Publications
Last updated: 4/14/2014

JACS 113. Andrzej Rajca, Arnon Olankitwanit, Ying Wang, Przemyslaw J. Boratynski, Maren Pink, and Suchada Rajca, “High-Spin S = 2 Ground State Aminyl Tetraradicals”, J. Am. Chem. Soc., 2013, 135, 18205–18215. DOI:10.1021/ja409472f. Highlighted in Synfacts: Timothy M. Swager, Joseph M. Azzarelli, Synfacts, 2014, 10, 0142. DOI: 10.1055/s-0033-1340602 [Spotlights on Recent JACS Publications]
OrgLett 112. Joseph T. Paletta, Maren Pink, Bridget Foley, Suchada Rajca, Andrzej Rajca, “Synthesis and Reduction Kinetics of Sterically Shielded Pyrrolidine Nitroxides”, Org. Lett., 2012, 14, 5322–5325. DOI:10.1021/ol302506f
JACS 111. Andrzej Rajca, Ying Wang, Michael Boska, Joseph T. Paletta, Arnon Olankitwanit, Michael A. Swanson, Deborah G. Mitchell, Sandra S. Eaton, Gareth R. Eaton, Suchada Rajca,“Organic Radical Contrast Agents for Magnetic Resonance Imaging”, J. Am. Chem. Soc., 2012, 134, 15724–15727. DOI:10.1021/ja3079829 [Correction, DOI: 10.1021/ja413028d] [JACS In C&EN]
OrgLett 110. Makoto Miyasaka, Maren Pink, Arnon Olankitwanit, Suchada Rajca, Andrzej Rajca, “Band Gap of Carbon-Sulfur [n]Helicenes”, Org. Lett., 2012, 14, 3076–3079. DOI:10.1021/ol3011437. Highlighted in Synfacts: Timothy M. Swager, Gregory D. Gutierrez, Synfacts, 2012, 8, 0964. DOI: 10.1055/s-0032-1317089
JOC 109. Andrzej Rajca, Przemyslaw J. Boratynski, Arnon Olankitwanit, Kouichi Shiraishi, Maren Pink, Suchada Rajca , “Ladder Oligo(m-aniline)s: Derivatives of Azaacenes with Cross-Conjugated π-Systems”, J. Org. Chem., 2012, 77, 2107–2120 (Featured Article). DOI: 10.1021/jo2025948. Highlighted in Synfacts: Timothy M. Swager, John B. Goods, Synfacts, 2012, 8, 0502. DOI: 10.1055/s-0031-1290840
JOC 108. Andrzej Rajca, Kouichi Shiraishi, Przemyslaw J. Boratynski, Maren Pink, Makoto Miyasaka, Suchada Rajca, “Oxidation of Annelated Diarylamines: Analysis of Reaction Pathways to Nitroxide Diradical and Spirocyclic Products”, J. Org. Chem., 2011, 76, 8447–8457. DOI: 10.1021/jo2017923
ChemComm 107. Arnon Olankitwanit, Velavan Kathirvelu, Suchada Rajca, Gareth R. Eaton, Sandra S. Eaton, Andrzej Rajca, “Calix[4]arene nitroxide tetraradical and octaradical”, Chem. Commun., 2011, 47, 6443–6445. DOI: 10.1039/C1CC11172H [From collection Supramolecular Chemistry]
JACS 106. Andrzej Rajca, Arnon Olankitwanit, Suchada Rajca, “Triplet Ground State Derivative of Aza-m-Xylylene Diradical with Large Singlet-Triplet Energy Gap”, J. Am. Chem. Soc., 2011, 133, 4750–4753. DOI:10.1021/ja200708b
eEROS 105. Ying Wang, Suchada Rajca, Andrzej Rajca, “Bis(benzenesulfonyl) Sulfide” (2011), Encyclopedia of Reagents for Organic Synthesis [Online], John Wiley & Sons Ltd. DOI: 10.1002/047084289X.rn01351
AngewChem 104. Przemyslaw J. Boratynski, Maren Pink, Suchada Rajca, Andrzej Rajca, “Isolation of the Triplet Ground State Aminyl Diradical”, Angew. Chem. Int. Ed., 2010, 49, 5459–5462. DOI:10.1002/anie.201002811
OrgLett 103. Makoto Miyasaka, Maren Pink, Suchada Rajca, Andrzej Rajca, “Spiro Oligothiophenes”, Org. Lett., 2010, 12, 3230–3233. DOI:10.1021/ol1011696. Highlighted in Synfacts: Timothy M. Swager, Joel Batson, Synfacts, 2010, 1136-1136. DOI: 10.1055/s-0030-1258632
Chem Euro J 102. Andrzej Rajca, Velavan Kathirvelu, Sandip K. Roy, Maren Pink, Suchada Rajca, Santanu Sarkar, Sandra S. Eaton, Gareth R. Eaton, “A Spirocyclohexyl Nitroxide Amino Acid Spin Label for Pulsed EPR Spectroscopy Distance Measurements”, Chem. Eur. J., 2010, 16, 5778–5782. DOI:10.1002/chem.200903102
JACS 101. Jerzy K. Zak, Makoto Miyasaka, Suchada Rajca, Mieczyslaw Lapkowski, Andrzej Rajca, “Radical Cation of Helical, Cross-Conjugated β-Oligothiophene”, J. Am. Chem. Soc., 2010, 132, 3246–3247. DOI: 10.1021/ja910076n
AngewChem 100. Andrzej Rajca, Suchada Rajca, “Asymmetric Synthesis of Chiral Tetraphenylenes”, Angew. Chem. Int. Ed., 2010, 49, 672–674. DOI: 10.1002/anie.200905421
JOC 99. Andrzej Rajca, Makoto Miyasaka, Shuzhang Xiao, Przemyslaw J. Boratynski, Maren Pink, Suchada Rajca, “Intramolecular Cyclization of Thiophene-Based [7]Helicenes to Quasi-[8]Circulenes”, J. Org. Chem., 2009, 74, 9105–9111. DOI: 10.1021/jo902030u
JOC 98. Andrzej Rajca, Makoto Miyasaka, Maren Pink, Shuzhang Xiao, Suchada Rajca, Kausik Das, Kristin Plessel, “Functionalized Thiophene-Based [7]Helicene: Chirooptical Properties versus Electron Delocalization”, J. Org. Chem., 2009, 74, 7504–7513. DOI: 10.1021/jo901769c
AngewChem 97. Makoto Miyasaka, Maren Pink, Suchada Rajca,Andrzej Rajca, “Noncovalent Interactions in the Asymmetric Synthesis of Rigid, Conjugated Helical Structures”, Angew. Chem. Int. Ed., 2009, 48, 5954–5957. DOI: 10.1002/anie.200901349 [Download]
ChemComm 96. Andrzej Rajca, Kouichi Shiraishi, Suchada Rajca, “Stable Diarylnitroxide Diradical with Triplet Ground State”, Chem. Commun., 2009, 4372–4374. DOI: 10.1039/b909741d
JACS 95. Andrzej Rajca, Matthew Vale, Suchada Rajca, “Diarylnitroxide Diradicals: Low-Temperature Oxidation of Diarylamines to Nitroxides”, J. Am. Chem. Soc., 2008, 130, 9099–9105. DOI: 10.1021/ja8016335
J.Sulfur. Chem 94. Shuzhang Xiao, Maren Pink, Hua Wang, Suchada Rajca, Andrzej Rajca, “Chiral Tetrathienylene: Synthesis and X-ray Structure” J. Sulfur Chem., 2008, 29, 425-432 (invited article in the special issue on Extreme Sulfur Chemistry) DOI: 10.1080/17415990802027263
JPCB 93. Hideo Sato, Velavan Kathirvelu, Gaëlle Spagnol, Suchada Rajca, Andrzej Rajca, Sandra S. Eaton, and Gareth R. Eaton “Impact of electron-electron spin interaction on electron spin relaxation of nitroxide diradicals and tetraradical in glassy solvents between 10 and 300 K” J. Phys. Chem. B, 2008, 112, 2818 -2828. DOI:10.1021/jp073600u
JOC 92. Matthew Vale, Maren Pink, Suchada Rajca, Andrzej Rajca, “Synthesis, Structure, and Conformation of Aza[1n]metacyclophanes”, J. Org. Chem. (Featured Article), 2008, 73, 27-35. DOI: 10.1021/jo702151n
Tetrahedron 91. Andrzej Rajca, Sumit Mukherjee, Maren Pink, Suchada Rajca, Kausik Das, “1,3-Alternate Calix[4]arene Nitronyl Nitroxide Tetraradical and Diradical: Synthesis, X-ray Crystallography, Paramagnetic NMR Spectroscopy, EPR Spectroscopy, and Magnetic Studies” Tetrahedron (Symp.-in-Print, New Trends in Calixarene Chemistry), 2007, 63, 10731 - 10742. DOI: 10.1016/j.tet.2007.07.051 [Download]
JACS 90. Andrzej Rajca, Masahiro Takahashi, Maren Pink, Gaëlle Spagnol, Suchada Rajca, “Conformationally-Constrained, Stable, Triplet Ground State (S = 1) Nitroxide Diradicals. Antiferromagnetic Chains of S = 1 Diradicals”, J. Am. Chem. Soc., 2007, 129, 10159 - 10170. DOI: 10.1021/ja0712017
SynLett 89. Andrzej Rajca, Suchada Rajca, Maren Pink, Makoto Miyasaka “Annelated, Chiral π-Conjugated Systems: Tetraphenylenes and Helical β-Oligothiophenes”, SynLett, 2007,1799 - 1822 (account, invited) DOI: 10.1055/s-2007-984538
JACS 88 Andrzej Rajca, Kouichi Shiraishi, Maren Pink, Suchada Rajca, “Triplet (S = 1) Ground State Aminyl Diradical” J. Am. Chem. Soc., 2007, 129, 7232 - 7233. DOI:10.1021/ja071881d
JOC 87. Gaëlle Spagnol, Andrzej Rajca, Suchada Rajca, “Efficient Synthesis of Tricyclic Benzobisoxazines by Silica Gel Catalysis”, J. Org. Chem., 2007, 72, 1867 - 1869. DOI:10.1021/jo062670e
JPCC 86. Reyes Malavé Osuna, Rocío Ponce Ortiz, Víctor Hernández, Juan Teodomiro López Navarrete, Makoto Miyasaka, Suchada Rajca, Andrzej Rajca, Rainer Glaser, “Helically Annelated and Cross-Conjugated β-Oligothiophenes: An FT-Raman Spectroscopic and Quantum Chemical DFT Study”, J. Phys. Chem. C., 2007, 111, 4854 - 4860. DOI:10.1021/jp0677344. [animation]
JOC 85. Andrzej Rajca, Makoto Miyasaka, “Synthesis and Characterization of Novel Chiral Conjugated Materials”, In Functional Organic Materials – Syntheses and Strategies, T. J. J. Mueller, U. H. F. Bunz, Eds.; Wiley-VCH, 2007, Chapter 15, 5435–77 [Download]
JACS 84. Andrzej Rajca, Sumit Mukherjee, Maren Pink, Suchada Rajca, “Exchange Coupling Mediated Through-Bonds and Through-Space in Conformationally-Constrained Polyradical Scaffolds: Calix[4]arene Nitroxide Tetraradicals and Diradical“, J. Am. Chem. Soc., 2006, 128, 13497–13507. DOI:10.1021/ja063567+ . [PubMed]
JACS 83. Kausik Das, Maren Pink, Suchada Rajca, Andrzej Rajca, “Synthesis and Structure of Nucleoside with π-Conjugated Nitroxide Spin Label Forming a One-Dimensional Ferromagnetic Chain”, J. Am. Chem. Soc., 2006, 128, 5334-5335. DOI:10.1021/ja060846o
JOC 82. Makoto Miyasaka, Andrzej Rajca, “Synthesis of Dithieno[2,3-b:3′,2′-d]thiophenes-Building Blocks for Cross-Conjugated β-Oligothiophenes”, J. Org. Chem., 2006, 71, 3264-3266. DOI:10.1021/jo060038f
JACS 81. Makoto Miyasaka, Andrzej Rajca, Maren Pink, Suchada Rajca, “Cross-Conjugated Oligothiophenes Derived from The (C2S)n Helix: Asymmetric Synthesis and Structure of Carbon-Sulfur [11]Helicene”, J. Am. Chem. Soc., 2005, 127, 13806-13807. DOI:10.1021/ja55414c
ChemComm 80. Gaëlle Spagnol, Kouichi Shiraishi, Suchada Rajca, Andrzej Rajca, “Triplet Ground State (S = 1) Pegylated Bis(aminoxyl) Diradical: Synthesis and the Effect of Water on Magnetic Properties”, Chem. Comm., 2005, 5047-5049. DOI:10.1039/B508094K
JACS 79. Kouichi Shiraishi, Andrzej Rajca, Maren Pink, Suchada Rajca, “π-Conjugated Conjoined Double Helicene via a Sequence of Three Oxidative CC– and NN–Homocouplings”, J. Am. Chem. Soc, 2005, 127, 9312-9313. DOI:10.1021/ja51521v
JACS 78. Andrzej Rajca, Kouichi Shiraishi, Matthew Vale, Hongxian Han, Suchada Rajca, “Stable Hydrocarbon Diradical, an Analogue of Trimethylenemethane”, J. Am. Chem. Soc, 2005, 127, 9014-9020 (Web Release Date: June 1, 2005), DOI:10.1021/ja052002v
Polymer J 77. Eiji Fukuzaki, Naoki Takahashi, Shingo Imai, Hiroyuki Nishide, Andrzej Rajca, “Synthesis of Dendritic, Non-Kekulé-, and Nondisjoint-type Triphenylmethanes Terminated with Galvinoxyl Radicals”, Polymer, J., 2005, 37, 284. DOI:10.1295/polymj.37.284
JACS 76. Andrzej Rajca, “The Physical Organic Chemistry of Very High-Spin Polyradicals”, Adv. Phys. Org. Chem., 2005, 40, 153-199.
JACS 75. Andrzej Rajca, Makoto Miyasaka, Maren Pink, Hua Wang and Suchada Rajca, “Helically Annelated and Cross-Conjugated Oligothiophenes: Asymmetric Synthesis, Resolution, and Characterization of a Carbon-Sulfur [7]Helicene”, J. Am. Chem. Soc.,2004, 126, 15211-15222. DOI:10.1021/ja0462530
Chem Euro J 74. Makoto Miyasaka, Maren Pink, Andrzej Rajca and Suchada Rajca, “Chiral Molecular Glass: Synthesis and Characterization of Enantiomerically Pure Thiophene-Based [7]Helicene”, Chem. Eur. J., 2004, 10, 6531-6539. DOI:10.1002/chem.200400635
Chem Euro J 73. Andrzej Rajca, Jirawat Wongsriratanakula, Suchada Rajca, Ronald L. Cerny, “Organic Spin Clusters: Annelated Macrocyclic Polyarylmethyl Polyradicals and Polymer with Very High-Spin S = 6 - 18”, Chem. Eur. J. , 2004, 10, 3144-3157. (VIP) DOI: 10.1002/chem.200306036 [Cover Picture]
JACS 72. Andrzej Rajca, Jirawat Wongsriratanakul, Suchada Rajca, “Organic Spin Clusters: Macrocyclic-Macrocyclic Polyarylmethyl Polyradicals with Very High-Spin S = 5 - 13”, J. Am. Chem. Soc., 2004, 126, 6608-6626. DOI:10.1021/ja031549b
JACS 71. Suchada Rajca, Andrzej Rajca, Jirawat Wongsriratanakul, Paul Butler, Sungmin Choi, “Organic Spin Clusters. Dendritic-Macrocyclic Polyarylmethyl Polyradical with Very High-Spin of S = 10 and its Derivatives: Synthesis, Magnetic Studies, and Small Angle Neutron Scattering”, J. Am. Chem. Soc., 2004, 126, 6972-6986. DOI:10.1021/ja031548j
ENN 70. Andrzej Rajca, “Organic Polyradical: Magnetic Nanoclusters”, in Encyclopedia of Nanoscience and Nanotechnology, H. S. Nalwa Ed., American Scientific Publishers, 2004, vol. 8 (Ne-P), 285-294.
SynLett 69. Makoto Miyasaka and Andrzej Rajca, “Synthesis of a Short Carbon-Sulfur Helicene: Pd-Catalyzed Cross-Coupling at the β-Positions of Thiophenes”, Synlett (Cluster Issue, invited) 2004.177-182. DOI:10.1055/s-2003-43335
JACS68. Andrzej Rajca, Maren Pink, Teerapat Rojsajjakul, Kan Lu, Hua Wang, and Suchada Rajca, “X-ray Crystallography and Magnetic Studies of a Stable Macrocyclic Tetranitroxide. Intramolecular Dimer of Nitroxides in a Constrained Geometry of the Upper Rim of Calix[4]arene”, J. Am. Chem. Soc., 2003, 125, 8534-8538. DOI:10.1021/ja034115p
JPCA 67. T.B. Friedman, X. Cao, A. Rajca, H. Wang L.A. Nafie, “Determination of Absolute Configuration in Molecules with hiral Axes by Vibrational Circular Dichroism: A C2-Symmetric Annelated Heptathiophene and a D2-Symmetric Dimer of 1,1’-Binapthyl”, J. Phys. Chem. A, 2003, 107, 7692-7696. DOI:10.1021/jp030307v
EPoly 66. Andrzej Rajca, “Magnetic Polymers”, in Encyclopedia of Polymer Science and Technology, 3 rd Ed, (J. I. Kroschwitz, Ed) Wiley, 2003, 6, 721 - 735 (Online Posing Date: October 15, 2002) DOI:10.1002/0471440264.pst433
Chem Euro J 65. Andrzej Rajca, “From High-Spin Organic Molecules to Organic Polymers with Magnetic Ordering”, Chem. Eur. J., 2002, 8, 4834-4841 (Concept Article, invited). DOI:10.1002/1521-3765(20021104)8:21<4834::AID-CHEM4834>3.0.CO;2-E
JACS 64. Roy Shenhar, Hua Wang, Roy E. Hoffman, Limor Frish, Liat Avram, Itamar Willner, Andrzej Rajca, and Mordecai Rabinovitz, “Self-Assembled, Helically Stacked Anionic Aggregates of 2,5,8,11-Tetra-tert-butylcycloocta[1,2,3,4-def;5,6,7,8-def′] bisbiphenylene, Stabilized by Electrostatic Interactions”, J. Am. Chem. Soc., 2002, 124, 4685-4692. DOI: 10.1021/ja012140u
JPCA 63. Roy Shenhar, Itamar Willner, Andrzej Rajca, Mordecai Rabinovitz, “Photoejection of Electrons from Cycloocta[1,2,3,4-def;5,6,7,8-def′]Bisbiphenylene Radical-Anion and Dianion Derivatives: Identification of a Light-Induced Disproportionation”, J. Phys. Chem. A, 2002, 106, 6206-6212. DOI:10.1021/jp014330x
CRC Hyper-structureed Molecule 62. A. Rajca, “Organic Spin Clusters, Fractals, and Networks with Very High-Spin”, in Hyper-structured Molecules III, H. Sasabe, Ed., Taylor & Francis, London, 2002, Chapter 3, 46-60.
Science 61. A. Rajca, J. Wongsriratanakul, S. Rajca, " Magnetic Ordering in an Organic Polymer", Science, 2001, 294, 1503.  [Introduction to the Magnetism and Materials special issue by I. S. Osborn, "The Attraction of Magnetism"
Tetrahedron 60. A. Rajca, H. Wang, P. Bolshov, S. Rajca, “Greek Cross Dodecaphenylene: Sparteine-Mediated Asymmetric Synthesis of Chiral D2-Symmetric π-Conjugated Tetra-o-phenylenes”, Tetrahedron, 2001, 57, 3725-3735 DOI:10.1016/S0040-4020(01)00241-1 [Download]
Polymer News 59. A. Rajca, “Very High-Spin Organic Polymers”, Polymer News, 2001, 26, 43-47 (Feature Article).
ChemComm 58. A. Rajca, H. Wang, V. Pawitranon, T. J. Brett, J. J. Stezowski, “Synthesis and Structure of Tetrathiophene with a Chiral 1,1′-Binaphthyl Kink”, Chem. Commun., 2001, 1060-061. DOI:10.1039/b007355p
Polyhedron 57. A. Rajca, S. Rajca, J. Wongsriratanakul, C. R. Ross, II, “4,6-Bis-(trifluoromethyl)-N, N′:-di-tert-butyl-1,3-phenylenebis(aminoxyl) and its Bis(trifluoroacetylacetonato)manganese(II) Complex: Synthesis, X-ray Crystallography, and Magnetism”, Polyhedron, 2001, 20, 1669-675. DOI:10.1016/S0277-5387(01)00671-4
J. Solid State Chem 56. S. Rajca, A. Rajca, “Polyarylmethyl Polyradicals as Organic Spin Clusters”, J. Solid State Chem., 2001, 159, 460-465. DOI:10.1006/jssc.2001.9179
AngewChem 55. A. Rajca, H. Wang, M. Pink, S. Rajca, “Annelated Heptathiophene: a Fragment of a Carbon-Sulfur Helix”, Angew. Chem. Int. Ed., 2000, 39, 4481. DOI:10.1002/1521-3773(20001215)39:24<4481::AID-ANIE4481>3.0.CO;2-G
JACS 54. A. Rajca, A. Safronov, S. Rajca, J. Wongsriratanakul “D2-Symmetric Dimer of 1,1′-Binaphthyl and Its Chiral π-Conjugated Carbodianion”, J. Am. Chem. Soc., 2000, 122, 3351-3357. DOI:10.1021/ja993286k
Magn.Reson. Chem. 53. R. E. Hoffman, R. Shenhar, I. Willner, H. E. Bronstein, L. Scott, A. Rajca, M. Rabinovitz, “Heteronuclear editing method for detecting NOE between chemically equivalent protrons: application to polycyclic aromatic hydrocarbons”, Magn. Reson. Chem. 2000, 38, 311-314. DOI:10.1002/%28SICI%291097-458X%28200004%2938%3A4%3C311%3A%3AAID-MRC641%3E3.3.CO%3B2-L
ChemComm 52. A. Rajca, S. Rajca, J. Wongsriratanakul, “Singlet-Triplet Energy Gap in a Cyclophane-Based Diradical with Parallel Exchange Coupling Pathways”, Chem. Commun., 2000, 1021-1022. DOI:10.1039/b001273o