Organic Materials Research Group

List of Publications

B: Book chapter

1. Radziszewski, J. G.; Downing, J. W.; Wentrup, C. ; Kaszynski, P.; Jawdosiuk, M.; Kovacic, P.; Michl, J. "2-Azaadamant-1-ene and 4-Azaprotoadamant-3-ene", J. Am. Chem. Soc. 1984, 106, 7996.

2. Radziszewski, J. G.; Downing, J. W.; Wentrup, C.; Kaszynski, P.; Jawdosiuk, M.; Kovacic, P.; Michl, J. "Geometrical Isomers of a Bridgehead Imine: (E)- and (Z)-2- Azabicyclo[3.2.1]oct-1-ene", J. Am. Chem. Soc. 1985, 107, 2799.

3. Michl, J.; Radziszewski, J. G.; Downing, J. W.; Kopecki, J.; Kaszynski, P. "Bridgehead Double Bonds", Pure Appl. Chem. 1987, 59, 1613.

4. Kaszynski, P.; Michl, J. "A Practical Photochemical Synthesis of Bicyclo[1.1.1]pentane- 1,3-dicarboxylic Acid", J. Org. Chem. 1988, 53, 4593.

5. Kaszynski, P.; Michl, J. "[n]Staffanes: A Molecular-Size "Tinkertoy" Construction Set for Nanotechnology. Preparation of End-Functionalized Telomers and a Polymer of [1.1.1]Propellane", J. Am. Chem. Soc. 1988, 110, 5225.

6. Kaszynski, P.; Friedli, A. C.; Michl, J. "Mesogenic Properties of Telomers of [1.1.1]Propellane", Mol. Cryst. Liq. Cryst. Lett. 1988, 6, 27.

7. Michl, J.; Kaszynski, P.; Friedli, A. C.; Murthy, G. S.; Yang, H.-C.; Robinson, R. E.; McMurdie, N. D.; Kim. T. "Harnessing Strain: From [1.1.1]Propellane to Tinkertoys", in Strain and its Implications in Organic Chemistry, de Meijere, A.; Blechert, S. Eds.; NATO ASI Series Vol. 273; Kluwer, Dordrecht, The Netherlands, 1989, p 463,

8. Friedli, A. C.; Kaszynski, P.; Michl, J."Towards a Molecular-Size Construction Set: 3,3(n-1)-Bisacetylthio[n]staffanes", Tetrahedron Lett. 1989, 30, 455.

9. Kaszynski, P.; Jawdosiuk, M. "A Comprehensive Approach to (S)-(-)-Methyl-1- butanol as a Convenient Precursor for Synthesis of Chiral Liquid Crystals", Mol. Cryst. Liq. Cryst. 1989, 174, 21.

10. Friedli, A. C.; Lynch, V. M.; Kaszynski, P.; Michl, J. " Crystal Structures of Six Terminally Substituted [n]Staffanes, n=1 - 4", Acta Crystall. 1990, 46A, 377.

11. Kaszynski, P.; Friedli, A. C.; McMurdie, N. D.; Michl, J. "Synthesis of Liquid Crystals Based on Bicyclo[1.1.1]pentane", Mol. Cryst. Liq. Cryst. 1990, 191, 193.

12. Kaszynski, P.; McMurdie, N. D.; Michl, J. "Synthesis of Doubly Bridgehead Substituted Bicyclo[1.1.1]pentanes. Radical Transformations of Bridgehead Halides and Carboxylic Acids", J. Org. Chem. 1991, 56, 307.

13. Kaszynski, P.; Friedli, A. C.; Michl, J. "Toward a Molecular-Size 'Tinkertoy' Construction Set. Preparation of Terminally Functionalized [n]Staffanes from [1.1.1]Propellane", J. Am. Chem. Soc. 1992, 114, 601-620.

14. Friberg, S. E.; Kayali, I.; Kaszynski, P.; Michl, J. "Influence of 3-Pentylbicyclo[1.1.1]pentane-1-carboxylic Acid on a Simplified Stratum Corneum Lipid Structure", Langmuir, 1992, 8, 996-998.

15. Janecki, T.; Shi, S.; Kaszynski, P.; Michl, J. "[n]Staffanes with Terminal Nitrile and Isonitrile Functionalities and Their Metal Complexes", Collect. Czech. Chem. Commun. 1993, 58, 89-104.

16. Gudipati, M. S.; Radziszewski, J. G.; Kaszynski, P.; Michl, J. "Bicyclo[3.2.2]non-1-ene: Matrix Isolation and Spectroscopic Characterization of a Moderately Strained Bridgehead Olefin", J. Org. Chem. 1993, 58, 3668-3674.

17. Radziszewski, J. G.; Kaszynski, P.; Littmann, D.; Balaji, V.; Hess, B. A. Jr.; Michl, J. "Twisted Si=N Bonds: Matrix Isolation of Bridgehead Silanimines", J. Am. Chem. Soc. 1993, 115, 8401-8408.

18. Kaszynski, P. and Dougherty, D. A. "Synthesis and Properties of Diethyl 5,10- Dihetera-5,10-dihydroindeno[2,1-a]indene-2,7-dicarboxylate", J. Org. Chem. 1993, 58, 5209-5220.

19. Murray M. M.; Kaszynski, P.; Kaisaki, D. A.; Chang, W.; Dougherty, D. A. "Prototypes for the Polaronic Ferromagnet. Synthesis and Characterization of High-Spin Organic Polymers", J. Am. Chem. Soc. 1994, 116, 8152-8161.


20.B Kaszynski, P. and Michl, J. "[n]Staffanes" in Advances in Strain in Organic Chemistry, Vol 4, Halton, B. Ed; Jai Press, Greenwich, 1995; pp 283-331.

21. Biernacki, P. R.; Kaszynski, P.; Hess, B. A. Jr.; Thulstrup, E. W.; Radziszewski, J. G. "Polarization Spectroscopy and ab Initio Study of Photooriented Matrix-Isolated Isotopomers of Phthalic Anhydride. Assignment of the Infrared Absorption Spectrum", J. Phys. Chem. 1995, 99, 6309-6316.

22. Kaszynski, P.; Huang, J.; Jenkins, G. S.; Bairamov, K. A.; Lipiak, D. "Boron Clusters in Liquid Crystals", Mol. Cryst. Liq. Cryst. 1995, 260, 315-332.

23. Patel, M. K.; Huang, J.; Kaszynski, P. "Design of New Stable Radicals for Molecular Magnetic Materials", Mol. Cryst. Liq. Cryst. 1995, 272, 87-97.[full text.pdf]

24.B Kaszynski, P.and Michl, J. "[1.1.1]Propellanes" in The Chemistry of the Cyclopropyl Group, Volume 2, Rappoport, Z. Ed.; Willey&Sons, New York, 1995, pp 773- 812.

25. Kaszynski, P. and Lipiak, D. " A New Role for Boron in Advanced Materials" in Materials for Optical Limiting, Crane, R.; Lewis, K.; Stryland, E. V.; Khoshnevisan, M. Eds.; MRS Vol 374, 1995, 341-347.

26. Patel, M. K.; Huang, J.; Kaszynski, P. " Towards Magnetic Liquid Crystals" in Materials for Optical Limiting, Crane, R.; Lewis, K.; Stryland, E. V.; Khoshnevisan, M. Eds.; MRS Vol 374, 1995, 349.


27. Douglass, A. G.; Zheng, M.; Friedli, A. C.; Kaszynski, P. "A Versatile Monomer for Polyelectrolytes via ROMP", Polym. Prepr. (Am. Chem. Soc., Div. Polym. Chem.), 1996, 37, 634.


28B. Kaszynski, P.; Lipiak, D.; Bairamov, K. A.; Brady, E.; Patel, M. K.; Laska, J. "Developing Materials Based on Boron closo-Clusters" in Advances in Boron Chemistry, Siebert, W. Ed.; The Royal Society of Chemistry, Cornwall, 1997; pp 507-513.

29. Dobrin, S.; Kaszynski, P.; Ikeda, S.; Waluk, J. "Photophysics of trans-Stilbene Analogues: Indolo[3,2-b]indole and Its Heterosubstituted Sulfur and Selenium Derivatives", Chem. Phys. 1997, 216, 179-192.

30. Dobrin, S.; Kaszynski, P.; Waluk, J. "Stilbene-like Molecules: Sulfur and Selenium-Heterosubstituted Indolo[3,2-b]indoles", J. Photochem. Photobiol., A: Chemistry, 1997, 105, 149-152.

31. Dobrin, S.; Starukhin, A.; Kaszynski, P.; Waluk, J. "Photophysics of Some Stilbene-Type Molecules", Opt. Spectr. (Engl), 1997, 83, 669-673.

32. Levin, M. D.; Hamrock, S. J.; Kaszynski, P.; Shtarev, A. B.; Levina, G. A.; Noll, B. C.; Ashley, M. E.; Newmark, R.; Moore, G. G. I.; Michl, J. "Preparation, Structure, and Properties of Symmetrically 1,3-Difunctionalized Penta- and Hexafluorobicyclo[1.1.1]pentanes", J. Am. Chem. Soc. 1997, 119, 12750-12761.


33. Douglass, A. G.; Mierzwa. M. L.; Kaszynski, P. "Liquid Crystals Containing p-Carborane", in Liquid Crystals: Chemistry and Structure, Tykarska, M.; Dabrowski, R.; Zielinski, J. Eds.SPIE, 1998, 3319, 59-62.

34. Bairamov, K. A.; Douglass, A. G.; Kaszynski, P. "1-Bromo-3,3-Bis(2-Bromoethyl)alkanes: Precursors to 4-Substituted Quinuclidines and 1-Phosphabicyclo[2.2.2]octanes", Synth. Commun. 1998, 28, 527-540.[full text.pdf]

35. Laska, E. J.; Kaszynski, P.; Jacobs, S. J. "Synthesis, Strain, Conformational Analysis, and Molecular and Crystal Structures of 1,1,4,4-Tetraphenyl-1,4-disilacyclohexane and 1,1,4,4-Tetraphenyl-1,4-disilacyclohexa-2,5-diene", Organometallics, 1998, 10, 2018-2026. [abstract][full text.pdf]

36. Douglass, A. G.; Czuprynski, K.; Mierzwa, M.; Kaszynski, P. "Effects of Carborane-Containing Liquid Crystals on the Stability of Smectic Phases", Chem. Mater.1998, 10, 2399-2402. [abstract][full text.pdf]

37. Radziszewski, J. G.; Kaszynski, P.; Friderichsen, A.; Abilgaard, J. "Bent Cyclopenta-2,4-dienylideneketene: Spectroscopic and ab initio Study of Reactive Intermediate", Collect. Czech. Chem. Commun. 1998, 63, 1094-1106.

38. Douglass, A. G.; Czuprynski, K.; Mierzwa, M.; Kaszynski, P. "An assessment of carborane-containing liquid crystals for potential device application ", J. Mater. Chem., 1998, 8, 2391-2398. [abstract][full text.pdf]

39. Douglass, A. G.; Janousek, Z.; Kaszynski, P. "Synthesis and Molecular Structure of 12-Iodo-1-(4-pentylquinuclidin-1-yl)-1-carba-closo-dodecaborane", Inorg. Chem., 1998, 37, 6361-6365. [abstract][full text.pdf]


40. Czuprynski, K. L.; Douglass, A. G.; Kaszynski, P.; Drzewinski, W. "Carborane-Containing Liquid Crystals: A Comparison of 4-Octyloxy-4'-(12-Pentyl-1,12-dicarbadodecaboran-1-yl with Its Hydrocarbon Analogs", Liq. Cryst. 1999, 26, 261-269.

41. Fendrich, W.; Harvey, J. E.; Kaszynski, P. "Molecular Structure, Conformational Analysis and Electronic Spectra of 1-Phenyl-1-aza-closo-dodecaborane(12)", Inorg. Chem., 1999, 38, 408-410. [full text.pdf]

42. Douglass, A. G.; Both, B.; Kaszynski, P. "Mesogenic Properties of Single Ring Compounds: Dipentyl Derivatives of p-Carboranes and Bicyclo[2.2.2]octane", J. Mater. Chem., 9, 683-686. [full text.pdf]

43. Gil, M.; Marczyk, J.; Dobrin, S.; Kaszynski, P.; Waluk, J. "Electronic transition moment directions in indoloindoles: the use of orientation amplifiers" J. Mol. Struct. 1999, 475, 141-151.

44. Czuprynski, K.; Kaszynski, P. "Homostructural two-ring mesogens: a comparison of p-Carboranes, bicyclo[2.2.2]octane and benzene as structural elements" Liq. Cryst.1999, 26, 775-778.

45B. Kaszynski, P. "Liquid Crystalline Radicals: an Emerging Class of Organic Magnetic Materials" to appear in Magnetic Properties of Organic Materials, Lahti, P. M. Ed.; Marcel Dekker, Inc. New York,1999, pp 305-324.

46. Kaszynski, P.; Douglass, A. G. "Organic Derivatives of closo-Boranes: A New Class of Liquid Crystal Materials", J. Organomet. Chem., 1999, 581, 28-38. [full text.pdf]

47. Kaszynski, P. "Four Decades of Organic Chemistry of closo-Boranes: A Synthetic Toolbox for Constructing of Liquid Crystal Materials. A Review", Collect. Czech. Chem. Commun., 1999, 64, 895-926. [full text.pdf]

48. Janousek, Z.; Kaszynski, P.; Kennedy, J. D.; Stibr, B."NMR Assignment of [6-R-nido-5,6-C2B8H10]- Anions (where R = H, Me, and n-C6H13). An Irreversible 5 -> 6 Alkyl Migration via a B(9) Vertex-swing Mechanism", Collect. Czech. Chem. Commun., 1999, 64, 986-992. [full text.pdf]

49. Janousek, Z.; Kaszynski, P. "Heterodisubstituted 1,10-dicarba-closo-decaboranes from substituted nido-carborane precursors" Polyhedron, 1999, 18, 3517-3526. [full text.pdf]


50. Levin, M. D.; Kaszynski, P.; Michl, J. "Bicyclo[1.1.1]pentanes, [n]Staffanes, [1.1.1]Propellanes, and Tricyclo[,5)]pentanes", Chem. Rev. 2000, 100, 169-234.

51. Sienkowska, M.; Benin, V.; Kaszynski, P. "Preparation and NMR Analysis of 2,6-Heterodifunctional Halobenzenes as Intermediates for Substituted Biphenyls", Tetrahedron, 2000, 56, 165-173. [full text.pdf]

52. Farrar, J. M.; Patel, M. K.; Kaszynski, P.; Young, V. G. Jr. "A New Thiatriazine Isomer: Synthesis, Tautomerism, and Molecular structure of 3,6-Diphenyl-4H-1,2,4,5-thiatriazine as a Precursor to the 1,2,4,5-Thiatriazinyl Radical", J. Org. Chem., 2000, 65, 931-940. [full text.pdf]

53. Levin, M. D.; Kaszynski, P.; Michl, J. "Photochemical Synthesis of Bicyclo[1.1.1]pentane-1,3-dicarboxylic Acid", Org. Synth. 2000, 77, 249-253.

54. Douglass, A. G.; Pakhomov, S.; Janousek, Z.; Reeves, B.; Kaszynski, P. "Triphenylsilyl as a Protecting Group in the Synthesis of 1,12-Heterodisubstituted p-Carboranes", J. Org. Chem. 2000, 65, 1434-1441. [full text.pdf]

55. Kaszynski, P. and Young V. G. Jr. "Nucleophile-Induced Intramolecular Dipole 1,5-Transfer and 1,6-Cyclization. Experimental and Ab Initio Studies of Formation, Thermolysis, and Molecular Structure of 3,6-Diphenyl-1-propylsulfenimido-1,2,4,5-tetrazine", J. Am. Chem. Soc. 2000, 122, 2087-2095. [full text.pdf]

56. Pakhomov, S.; Kaszynski, P.; Young, V. G. Jr. "10-Vertex closo-boranes as potential p linkers for electronic materials", Inorg. Chem., 2000, 39, 2243-2245. [full text.pdf]

57. Manka, J. T.; Douglass, A. G.; Kaszynski, P.; Friedli, A. C. "Retro Diels-Alder Reactions of 5,6-Disubstituted-7-Oxabicyclo[2.2.1]hept-2-enes: Experimental and Density Functional Theory Studies", J. Org. Chem. 2000, 65, 5202-5206. [full text.pdf]

58. Benin, V.; Kaszynski P.; Pink, M.; Young, V. G. Jr."Formation of 1,10-disubstituted benzo[c]cinnolines. Synthesis and molecular structure of 1-amino-10-propylthiobenzo[c]cinnoline and cyclization to 4-propylcinnolino[5,4,3][c,d,e][1,2]benzothiazine", J. Org. Chem. 2000, 65, 6388-6397. [full text.pdf]

59. Farrar, J. M.; Sienkowska, M.; Kaszynski, P. "Synthesis of 1,3,6,8-Tetrabromophenanthrene via A Stoichiometric Ullmann Reaction" Synth. Commun, 2000, 30, 4039-40-45.

60. Benin, V.; Kaszynski P. "Cinnolino[5,4,3][c,d,e][1,2]benzothiazin-4-yl: A New Persistent Radical", J. Org. Chem. 2000, 65, 8086-8088. [full text.pdf]


61. Kaszynski, P. "Theoretical Analysis of Heteroaromatic Thioaminyl Radicals. Part 1: A Comparison of Ab Initio and Density Functional Methods in Calculations of Molecular Geometry and Isotropic Hyperfine Coupling Constants", J. Phys. Chem. A, 2001, 105, 7615-7625.

62. Kaszynski, P. "Theoretical Analysis of Heteroaromatic Thioaminyl Radicals. Part 2: A Comparison of Ab Initio and Density Functional Methods in The Description of Redox Processes", J. Phys. Chem. A, 2001, 105, 7626-7633.

63B. Kaszynski, P. "closo-Boranes as p Structural Elements for Advanced Anisotropic Materials" in Anisotropic Organic Materials-Approaches to Polar Order, R. Glaser and P. Kaszynski, Eds. ACS Symposium Series, Volume 798. American Chemical Society, Washington, D.C. 2001, pp 68-82.

64. Kaszynski, P.; Pakhomov, S.; Tesh, K. F.; Young, V. G. Jr. "Carborane-Containing Liquid Crystals: Synthesis and Structural, Conformational, Thermal, and Spectroscopic Characterization of Diheptyl and Diheptynyl Derivatives of p-Carboranes", Inorg. Chem. 2001, 40, 6622-6631. [full text.pdf]


65. Benin, V.; Kaszynski P.; Radziszewski, J. G. "Arylpentazoles Revisited: Experimental and Theoretical Studies of 4-Hydroxyphenylpentazole and 4-Oxophenylpentazole Anion", J. Org. Chem. 2002, 67, 1354-1358.[full text.pdf]

66. Benin, V.; Kaszynski P.; Radziszewski, J. G. "N-Chloro-N,N',N'-tris(ethoxycarbonyl)hydrazine and N,N-Dichloro-N',N'-bis(ethoxycarbonyl)hydrazine: Synthesis, Stability and Reactions with Nucleophiles", Tetrahedron, 2002, 58, 2085-2090.[full text.pdf]

67. Radziszewski, J. G.; Waluk, J.; Kaszynski P.; Spanget-Larsen, J. "High-resolution Spectroscopic Study of Matrix-Isolated Reactive Intermediates: Vibrational Assignments for 3-Fluoro-o-Benzyne and Perfluoro-o-Benzyne" J. Phys. Chem. A, 2002, 106, 6730-6737.

68. Kaszynski, P.; Pakhomov, S.; Young, V. G. Jr. "Investigations of Electronic Interactions Between closo-Boranes and Triple-Bonded Substituents" Collect. Czech. Chem. Commun. 2002, 67, 1061-1083. [full text.pdf]

69. Benin, V.; Kaszynski P.; Radziszewski, J. G. "The Ambident Ethyl N-nitrosocarbamate Anion: Experimental and Computational Studies of Alkylation and Thermal Stability" J. Am. Chem.Soc. 2002, 124, 14115-14126.[full text.pdf]


70. Piecek, W.; Kaufman, J. M.; Kaszynski, P. "A Comparison of Mesogenic Properties for One- and Two-ring Dipentyl Derivatives of p-Carboranes, Bicyclo[2.2.2]octane, and Benzene", Liq. Cryst., 2003, 30, 39-48 .[full text.pdf]

71. Kadkin, O.; Osajda, K.; Kaszynski, P.; Barber, T. A. "Polyester Polyols: Synthesis and Characterization of Diethylene Glycol Terephthalate Oligomers" J. Polymer Sci. Part A. 2003, 41, 1114-1123.[full text.pdf]

72. Jason T. Manka and Piotr Kaszynski "Synthesis and Thiolation of 1,3-Difluoro-2,4,6-trihaloanilines and Benzenes", J. Fluorine Chem. 2003, 124, 39-43.[full text.pdf]

73. Manka, J. T.; Guo, F.; Huang, J.; Yin, H.; Farrar, J. M.; Sienkowska, M.; Benin, V.; Kaszynski, P. "Synthesis of Poly-Functionalized Biphenyls as Intermediates For a New Class of Liquid Crystals", J. Org. Chem. 2003, 68, 9574-9588.[full text.pdf]


74. Manka, J. T.; McKenzie, V. C.; Kaszynski P. "Azo Group-assisted Nucleophilic Aromatic Substitutions in Haloarene Derivatives: Preparation of Substituted 1-Iodo-2,6-bispropylthiobenzenes", J. Org. Chem. 2004, 69, 1967-1971. [full text.pdf]

75. Zienkiewicz, J.; Kaszynski, P.; Young, V. G. Jr. "Fused-ring Thiadiazines: Preparation and Crystallographic Characterization of 3-Phenyl Derivative of Benzo-, Pyridio[2,3-e]-, Pyrazino[2,3-e]- and Tetrafluorobenzo-[1,2,4]thiadiazines" J. Org. Chem., 2004, 69, 2551-2561. [full text.pdf]

76. Ohta, K.; Januszko, A.; Kaszynski, P; Nagamine. T.; Sasnouski, G.; Endo, Y. "Structural Effects in Three-Ring Mesogenic Derivatives of p-Carborane and Their Hydrocarbon Analogs" Liq. Cryst., 2004, 31, 671-682. [full text.pdf]

77. Januszko, A.; Kaszynski, P; Wand, M. D.; More, K. M.; Pakhomov, S.; O'Neill, M. "Three-ring mesogens containing p-carboranes: characterization and comparison with the hydrocarbon analogs in the pure state and as additives to a ferroelectric mixture", J. Mater. Chem. 2004, 14, 1544-1553. [full text.pdf]

78. Kaszynski, P. "New p-delocalized Persistent Radicals", Molecules, 2004, 9, 716-724 . [full text.pdf]

79. Zienkiewicz, J.; Kaszynski, P.; Young, V. G. Jr. "Experimental and Theoretical Studies of Fused-Ring Persistent [1,2,4]Thiadiazinyl Radicals", J. Org. Chem.2004, 69, 7525-7536. [full text.pdf]


80. Stulgies, B.; Pigg, D. P., Jr., Kaszynski, P.; Kudzin, Z. H. " 9,9-Dimethyl-8,10-dioxapentacyclo[,5). 0 (3,5). 0 (3,6) ]decane and Naphthotetracyclo[ (1,6). 0 (2,7) ]oct-3-ene: New Substituted [1.1.1]Propellanes as Precursors to 1,2,3,4-Tetrafunctionalized Bicyclo[1.1.1]pentanes" Tetrahedron, 2005, 61, 89-95. [full text.pdf]

81. Endo, Y.; Songkram, C.; Ohta, K.; Kaszynski, P.; Yamaguchi, K. "Distorted benzene bearing two bulky substituents on adjacent positions: structure of 1,2-bis(1,2-dicarba- closo -dodecaboran-1-yl)benzene", Tetrahedron Lett. 2005 , 46 , 699-702.[full text.pdf]

82. Fryszkowska, A.; Tilford, R. W.; Guo, F.; Kaszynski, P. "Activation of Chlorine and Fluorine by a Phenylazo Group Towards Nucleophilic Aromatic Substitution. Regioselective Preparation of Polysubstituted Anilines", Tetrahedron, 2005, 61, 2327-2333.[full text.pdf]

83. Nagamine, T.; Januszko, A.; Ohta, K.; Kaszynski, P.; Endo, Y. "A Comparison of Mesogenic Properties of p -Carborane-1,12-dicarbaldehyde Schiff Bases with Their Terephthaldehyde Analogues" Liq. Cryst. 2005, 32, 985-995.[full text.pdf]

84.Ringstrand, B.; Vroman, J.; Jensen, D.; Januszko, A.; Kaszynski, P.; Dziaduszek, J.; Drzewinski W., "Comparative Studies of Three- and Four-ring Mesogenic Esters Containing p -Carborane, Bicyclo[2.2.2]octane, Cyclohexane, and Benzene", Liq. Cryst., 2005, 32, 1061-1070.[full text.pdf]

85. Ringstrand, B.; Balinski, A.; Franken, A.; Kaszynski, P. "A practical synthesis of isomerically pure 1,10-difunctionalized derivatives of the [closo-1-CB9H10] anion" Inorg. Chem. , 2005, 44, 9561-9566.[full text.pdf]


86. Januszko, A.; Kaszynski, P.; Drzewinski, W. "Ring Effect on Helical Twisting Power of Optically Active Mesogenic Esters Derived from Benzene, Bicyclo[2.2.2]octane, and p -Carborane Carboxylic Acids" J. Mater. Chem. 2006, 16, 452 - 461.[full text.pdf]

87. Januszko, A.; Glab, K. L.; Kaszynski, P.; Patel , K.; Lewis, R. A.; Mehl, G. H.; Wand, M. D. "The Effect of Carborane, Bicyclo[2.2.2]octane and Benzene on Mesogenic and Dielectric Properties of Laterally Fluorinated Three-Ring Mesogens" J. Mater. Chem. 2006 16, 3183 - 3192. [full text.pdf]

88. Nagamine, T.; Januszko, A.; Kaszynski, P.; Ohta, K.; Endo, Y. "Mesogenic, Optical, and Dielectric Properties of 5-Substituted 2-[12-(4-pentyloxyphenyl)-p-carboran-1-yl][1,3]dioxanes" J. Mater. Chem. 2006, 16, 3836 - 3843.[full text.pdf]


89. Sienkowska, M. J.; Farrar, J. M.; Kaszynski, P. "Preparation of a Discotic 2,4,7,9-Tetraaryl-6H-Dibenzo[c,e][1,2]thiazine and Generation of a Persistent Radical" Liq. Cryst. 2007, 34, 19-24. [full text.pdf]

90. Sienkowska, M. J.; Monobe. H.; Kaszynski, P.; Shimizu, Y. "Photoconductivity of Liquid Crystalline Derivatives of Pyrene and Carbazole" J. Mater. Chem. 2007, 17, 1392-1398. [full text.pdf]

91. Sienkowska, M. J.; John M. Farrar, Fan Zhang, Sharat Kusuma, Paul A. Heiney, and Piotr Kaszynski "Liquid Crystalline derivatives of tetraaryl derivatives of benzo[c]cinnoline, tetraazapyrene, phenanthrene, and pyrene: The effect of heteroatom and substitution pattern on phase stability" J. Mater. Chem. 2007, 17, 1399-1411.[full text.pdf]

92. Zienkiewicz, J.; Fryszkowska, A.; Zienkiewicz, K.; Guo, F.; Kaszynski, P.; Januszko, A.; Jones, D. "Synthesis of Liquid Crystalline 4H -Benzo[1,2,4]thiadiazines and Generation of Persistent Radicals" J. Org. Chem. 2007, 72, 3510-3520. [full text.pdf]

93. Jankowiak, A.; Jasinski, M.; Kaszynski, P. "1,1'- Bis(3-Hydroxypropyl)ferrocene: Preparation and Substitution with Polyfluoroalkyl Groups"Inorg. Chim. Acta, 2007,360, 3637-3641. [full text.pdf]

94. Januszko, A.; Kaszynski, P.; Grüner, M. " Mesogenic Properties of bis(Tricarbollide)Fe(II) derivatives" Inorg. Chem. 2007, 46, 6078-6082.[full text.pdf]

95. Miniewicz, A.; Kaszynski, P.; Samoc, A.; Samoc, M. " Observation of second harmonic generation in an oriented glassy nematic phase of a [B10H10]-2 derivative",   J. Appl. Phys. 2007,102, 033108. [full text.pdf]

96. Jankowiak, A.; Januszko, A.; Kaszynski, P. "Preparation of 4-Alkoxy-1-hydroxypyridine-2-thiones". Pol. J. Chem. 2007, 81, 1869-1877.[full text.pdf]


97. Jankowiak, A.; Januszko, A.; Ringstrand, B.; Kaszynski, P. "A New Series of Nematic and Smectic Liquid Crystals with Negative Dielectric Anisotropy: The effect of Terminal Chain Substitution on Thermal and Electro-optical Properties" Liq. Cryst . 2008, 35, 65-77.[full text.pdf]

98. Jasinski, M.; Jankowiak, A.; Januszko, A.; Bremer, M.; Pauluth, D.; Kaszynski, P. "Evaluation of carborane-containing nematic liquid crystals for electro-optical applications" Liq. Cryst. 2008, 35, 343-350.[full text.pdf]

99.  Pociecha, D.; Ohta, K.; Januszko, A.; Kaszynski, P.; Endo Y. "Symmetric Bent-core Mesogens with m -Carborane and Adamantane as the Central Units" J. Mater. Chem. 2008 , 18 , 2978 - 2982.[full text.pdf]

100.      Januszko, A.; Glab, K. L.; Kaszynski. P. "Induction of smectic behavior in a carborane-containing mesogen. Tail-fluorination of a three-ring nematogen and its miscibility with benzene analogues" Liq. Cryst. 2008 , 35 , 549-553.[full text.pdf]

101.      Januszko, A.; Kaszynski, P. "A Comparison of Smectic Phase Induction in a Series of Isostructural Two-ring Esters by Tail Fluorination and Tail Elongation" Liq. Cryst. 2008 , 35 , 705-710.[full text.pdf]

102. Eccles, W.; Jasinski, M.; Kaszynski, P.; Zienkiewicz, K.; Stulgies, B. " Reactivity of 13,13-Dibromo-2,4,9,11-tetraoxadispiro[]tridecane Towards Organolithiums: Remarkable Resistance to the DMS Rearrangement" J. Org. Chem.2008, 73, 5732-5744.[full text.pdf]

103. Nagamine, T.; Januszko, A. Ohta, K.; Kaszynski, P.; Endo, Y. " The Effect of the Linking Group on Mesogenic Properties of Three-ring Derivatives of p -Carborane and Biphenyl" Liq. Cryst. 2008 , 35 , 865-884.[full text.pdf]

104.     Kaszynski, P.; Januszko, A.; Ohta, K.; Nagamine, T.; Potaczek, P.; Young Jr. V. G.; Endo, Y. " Conformational Effects on Mesophase Stability: Numerical Comparison of Carborane Diester Homologous Series with Their Bicyclo[2.2.2]octane, Cyclohexane and Benzene Analogues" Liq. Cryst. 2008 , 35 , 1169-1190.[full text.pdf]


105.      Piecek, W.; Glab, K. L.; Januszko, A.; Perkowski, P.; Kaszynski, P. "Modification of electro-optical properties of an orthoconic chiral biphenyl smectogen with its isostructural carborane analogue" J. Mater. Chem. 2009, 19 , 1173-1182.[full text.pdf]

106.      Kaszynski, P.; Pakhomov, S.; Gurskii, M. E.; Erdyakov, S. Yu.; Starikova, Z. A.; Lyssenko, K. A.; Antipin, M. Yu.; Young Jr. V. G.; Bubnov, Yu, N. "1-Pyridine- and 1-Quinuclidine-1-boraadamantane as Models for Derivatives of 1-Borabicyclo[2.2.2]octane. Experimental and Theoretical Evaluation of the B-N Fragment as a Polar Isosteric Substitution for the C-C Group in Liquid Crystal Compounds, " J. Org. Chem. 2009, 74, 1709-1720.[full text.pdf]

107.      Johnson, L.; Ringstrand, B.; Kaszynski, P. "A Convenient Preparation of long chain 4-(4-n-Alkylphenylazo)phenols and their 4-Pentylbenzoate Esters" Liq. Cryst. 2009, 36, 179-185.[full text.pdf]

108.       Kaszynski, P. " Tautomerism and Regioselectivity of Acylation of 4-Hydroxy-2-mercaptopyridine- N -oxide and 2,4-Dimercaptopyridine- N -oxide: A computational study" Phosphorus, Sulfur, Silicon Relat. Elem. 2009, 184, 1296-1306.[full text.pdf]

109.       Ringstrand, B.; Kaszynski, P.; Monobe, H. “Anion-Driven Mesogenicity: Ionic Liquid Crystals based on the [closo-1-CB9H10]- Cluster”, J. Mater. Chem. 2009, 19, 4805-4812.[full text.pdf]

110.       Ringstrand, B.; Kaszynski, P.; Franken, A. “Synthesis and Reactivity of [closo-1-CB9H9-1-N2]: Functional Group Interconversion at the Carbon Vertex of the {closo-1-CB9} Cluster” Inorg. Chem.2009, 48, 7313-7329.[full text.pdf]

111.       Jankowiak, A.; Kaszynski, P. “4-Substituted 1-Acyloxypyridine-2(1H)-thiones: Experimental and Computational Studies of the Substituent Effect on Electronic Absorption Spectra” J. Org. Chem. 2009, 74, 7441-7448.[full text.pdf]

112.     Ringstrand, B.; Kaszynski, P.; Januszko, A.; Young, V. G. Jr. “Polar Derivatives of the [closo-1-CB9H10]- Cluster as Positive De Additives to Nematic Hosts", J. Mater. Chem. 2009, 19, 9204-9212.[full text.pdf]

113.     Jankowiak, A.; Kaszynski, P.; Tilford, W. R.; Ohta, K.; Januszko, A.; Nagamine, T. Endo, Y. " Ring-alkyl Connecting Group Effect on Mesogenic Properties of p-Carborane Derivatives and Their Hydrocarbon Analogues" , Beils. J. Org. Chem. 2009, 5, 83.[full text.pdf].


114.   Ringstrand, B.; Kaszynski, P.; Young, V. G. Jr.; Janoušek, Z. “The Anionic Amino Acid [closo-1-CB9H8-1-COO-10-NH3]- and Dinitrogen Acid [closo-1-CB9H8-1-COOH-10-N2] as Key Precursors to Advanced Materials: Synthesis and Reactivity ”, Inorg. Chem. 2010, 49, 1166-1179.[full text.pdf].

115.   Ringstrand, B.; Kaszynski, P. “How Much Can an Electric Dipole Stabilize a Nematic Phase? Polar and Non-Polar Isosteric Derivatives of [closo-1-CB9H10]- and [closo-1,10-C2B8H10]”, J. Mater. Chem. 2010, 20, 9613[full text.pdf].


116.   Ringstrand, B.; Kaszynski, P. "High De nematic liquid crystals: fluxional zwitterions of the [closo-1-CB9H10]- cluster”, J. Mater. Chem. 2011, 21, 90-95.[full text.pdf]

117.   Ringstrand, B.; Kaszynski, P.; Young, V. G. Jr. “Diazotization of the amino acid [closo-1-CB9H8-1-COOH-6-NH3] and reactivity of the [closo-1-CB9H8-1-COO-6-N2]- anion“, Inorg. Chem.2011, 50, 2654-2660.[full text.pdf]

118.   Ringstrand, B.; Oltmanns, M.; Batt, J.; Jankowiak, A.; Denicola, R. P.; Kaszynski, P., “The Preparation of 3-Substituted-1,5-Dibromopentanes as Precursors to Heteracyclohexanes “, Beils. J. Org. Chem. 2011, 7, 386-393.[full text.pdf]

119.   Obijalska, E.; Kaszynski, P.; Jankowiak, A.; Young, V. G. Jr. “Preparation and Evaluation of 2-Azinyl-2H-benzotriazoles as Bidentate Ligands: Synthesis and Characterization of [2-(2-Pyridynyl)-2H-benzotriazole](bpy)2Ru2+ ”, Polyhedron, 2011,30, 1339-1348.[full text.pdf]

120.   Jankowiak, A.; Obijalska, E.; Kaszynski, P.; Pieczonka, A.; Young, V. G. Jr.,“Synthesis and structural, spectroscopic, and electrochemical characterization of Benzo[c]quinazolium and its 5-Aza-, 6-Aza, and 5,6-Diaza Analogues “, Tetrahedron, 2011, 67, 3317-3327.[full text.pdf]

121.   Kaszynski, P. “closo-Boranes as Structural Elements for Liquid Crystals” in “Boron Science: New Technologies & Applications”, N. Hosmane, Ed.; CRC Pres, 2011, pp 305-338.

122.   Pecyna, J.; Denicola, R. P.; Ringstrand, B.; Jankowiak, A.; Kaszynski, P. “The preparation of [closo-1-CB9H8-1-COOH-10-(4-C3H7C5H9S)] as intermediate to polar liquid crystals“, Polyhedron, 2011, 30, 2505-2513.[full text.pdf]


 123.   Jankowiak, A.; Pociecha , D.; Szczytko, J.; Monobe, H.; Kaszynski, P. “Photoconductive Liquid Crystalline Derivatives of 6-Oxoverdazyl”, J. Am. Chem. Soc., 2012, 134, 2465-2468.[full text.pdf]

124.   Jankowiak, A.; Debska, Z.; Romanski, J.; Kaszynski, P. “Synthesis of 3,4-dialkylsulfanyl- and 3,4,5-trialkylsulfanyl derivatives of bromobenzene and benzaldehyde” J. Sulfur Chem. 2012, 33, 1-7.[full text.pdf]

125.   Jankowiak, A.; Kaszynski, P. “Synthesis of oleophilic electron-rich phenylhydrazines”, Beils. J. Org. Chem. 2012, 8, 275-282.[full text.pdf]

126.   Ringstrand , B.; Jankowiak, A.; Johnson, L. E.; Pociecha , D.; Kaszynski, P.; Górecka, E. “Anion-Driven Mesogenicity: A Comparative Study of Ionic Liquid Crystals Based on the [closo-1-CB9H10]- and [closo-1-CB11H12]- Clusters”, J. Mater. Chem. 2012, 22, 4874-4880.[full text.pdf]

127.   Pecyna, J.; Ringstrand, B.; Kaszynski, P. “Transmission of electronic effects through the {closo-1-CB9} and {closo-1-CB11} cages: Dissociation constants for a series of [closo-1-CB9H8-1-COOH-10-X] and [closo-1-CB11H10-1-COOH-12-X] acids”, Inorg. Chem.2012, 51, 5353-5359.[full text.pdf]

128.  Jankowiak, A.; Pociecha, D.; Monobe, H.; Szczytko, J.; Kaszynski, P. “Thermochromic Discotic 6-Oxoverdazyls”, Chem. Commun. 2012, 7064-7066.[full text.pdf]

129.   Pecyna, J.; Sivaramamoorthy, A.; Jankowiak, A.; Kaszynski, P. “Anion driven ionic liquid crystals: The effect of the connecting group in [closo-1-CB9H10]- derivatives on mesogenic properties” Liq. Cryst. 2012, 39, 965-971. [full text.pdf]


 130. Jankowiak, A.; Balinski, A; Harvey, J. E.; Mason, K.; Januszko, A.; Kaszynski, P.; Young Jr. V. G.; Persoons, A. "[closo-B10H10]2- as a Structural Element for Quadrupolar Liquid Crystals: A new Class of Liquid Crystalline NLO Chromophores", J. Mater. Chem. C, 2013, 1, 1144. [full text.pdf]

131.   Ringstrand, B. and Kaszynski, P. “Functionalization of the [closo-1-CB9H10]- Anion for the Construction of New Classes of Liquid Crystals” Acc. Chem. Res. 2013, 46, 214-225. [full text.pdf]

132. Jankowiak, A.; Ringstrand, B.; Januszko, A.; Kaszynski, P.; Wand, M. D. "Liquid crystals with negative dielectric anisotropy: The effect of unsaturation in the terminal chain on Thermal and Electro-optical Properties", Liq. Cryst. 2013, 40, 605-615.[full text.pdf]

133. Jankowiak, A.; Pociecha, D.; Monobe, H.; Szczytko, J.; Debska, Z.; Romanski, J.; Kaszynski, P. "Induction of columnar discotic behavior in verdazyl radicals with alkylsulfanyl substituents", Phosphorus, Sulfur Silicon Relat. Elem. 2013, 188, 418-426.[full text.pdf]

134. Kanazawa, J; Takita, R.; Jankowiak, A.; Fujii, S.; Kagechika, H.; Hashizume, D.; Shudo, K.; Kaszynski, P.; Uchiyama, M. “Copper-mediated C–C Cross-Coupling Reaction of Monocarba-closo-dodecaborate Anion for Construction of Functional Molecules”, Angew. Chem. Int. Ed. 2013, 52, 8017-8021.[full text.pdf]

135. Jasinski, M.; Gerding, J. S.; Jankowiak, A.; Gebicki, K.; Romanski, J.; Jastrzebska, K.; Sivaramamoorthy, A.; Mason, K.; Evans, D. H.; Celeda, M.; Kaszynski, P. “Functional Group Transformations in Derivatives of 6-Oxoverdazyl”, J. Org. Chem. 2013, 78, 7445-7454.[full text.pdf]

136. Jankowiak, A.; Obijalska, E.; Pieczonka, A.; Kaszynski, P. “Cyclization of substitued 2-(2-fluorophenylazo)azines to azino[1,2-c]benzo[d][1,2,4]triazinium derivatives”, Beilstein J. Org, Chem. 2013, 9, 1873-1880. [full text.pdf]

137. Jankowiak, A.; Kanazawa, J.; Kaszynski, P.; Takita, R.; Uchiyama, M. “[closo-1-CB11H11-1-Ph]- as a Structural Element for Ionic Liquid Crystals”, J. Organomet. Chem. 2013, 747, 195-200. [full text.pdf]


 138. Jankowiak, A.; Pociecha, D.; Szczytko, J.; Monobe, H.; Kaszynski, P. "Liquid crystalline radicals: Discotic behavior of unsymmetrical derivatives of 1,3,5-triphenyl-6-oxoverdazyl", J. Mater. Chem. C, 2014, 2, 319-324. [full text.pdf]

139. Pecyna, J.; Pociecha, D.; Kaszynski, P. "Zwitterionic pyridinium derivatives of [closo-1-CB9H10]- and [closo-1-CB11H12]-  clusters as as high De additives to a nematic host", J. Mater. Chem. C, 2014, 2, 1585-1519. [full text.pdf]

140. Jankowiak, A.; Pociecha, D.; Szczytko, J.; Monobe, H.; Kaszynski, P. “Discotic Derivatives of 6-Oxoverdazyl Radical”, Liq. Cryst., 2014, 41, 385-392.[full text.pdf]

141. Kaszynski, P.; Januszko, A.; Glab, K. L."Comparative Analysis of Fluorine-containing Mesogenic Derivatives of Carborane, Bicyclo[2.2.2]octane, Cyclohexane, and Benzene using the Maier-Meier Theory", J. Phys. Chem. B, 2014, 118, 2238-2248.[full text.pdf]

142. Pecyna, J.; Kaszynski, P.; Ringstrand, B.; Bremer, M. "Investigation of high De derivatives of the [closo-1-CB9H10]- anion for liquid crystal display applications ", J. Mater. Chem. C, 2014, 2, 2956-2964.[full text.pdf]

143. Pecyna, J.; Denicola, R. P.; Gray, H. M.; Ringstrand, B.; Kaszynski, P. “The effect of molecular polarity on nematic phase stability in 12-vertex carboranes”, Liq. Cryst. 2014, 41, 1188-1198.[full text.pdf]

144. Bodzioch, A.; Zheng, Z.; Kaszynski, P.; Utecht, G. “Functional Group Transformations in Derivatives of 1,4-Dihydrobenzo[1,2,4]triazinyl Radical”, J. Org. Chem. 2014, 79, 7294-7310.[full text.pdf]

145. Jankowiak, A.; Kaszynski, P. “Practical synthesis of 1,12-difunctionalized o-carborane for investigation of polar liquid crystals", Inorg. Chem. 2014, 53, 8762-8769.[full text.pdf]

146. Jankowiak, A.; Sivaramamoorthy, A.; Pociecha, D.; Kaszynski, P. “How much do Coulombic Interactions Stabilize a Mesophase? Ion pair and Non-ionic Binary Isosteric Derivatives of Mono-carbaborates and Carboranes”, RSC Adv. 2014, 4, 53907-53914.[full text.pdf]

147. Jasinski, M.; Pociecha, D.; Monobe, H.; Szczytko, J.; Kaszynski, P. “A Tetragonal Phase of 6-Oxoverdazyl Bent-Core Derivatives with Photo-Induced Ambipolar Charge Transport and Electrooptical Effects", J. Am. Chem. Soc. 2014, 136, 14658-14661.[full text.pdf]

148. Jankowiak, A.; Pociecha, D.; Szczytko, J.; Kaszynski, P. "Chiral discotic derivatives of 1,3,5-triphenyl-6-oxoverdazyl radical", Liq. Cryst. 2014, 41, 1653-1660.[full text.pdf]

149. Pecyna, J.; Ringstrand, B.; Domagala, S.; Kaszynski, P; Wozniak, K. “Synthesis of 12-pyridinium derivatives of the [closo-1-CB11H12]- anion", Inorg. Chem. 2014, 53, 12617-12626.



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