Issue 29, 2008
From the journal:

Journal of Materials Chemistry

The first examples of discotic radicals: columnar mesomorphism in spin-carrying triphenylenes†

Channabasaveshwar V. Yelamaggad,*a   Ammathnadu S. Achalkumar,a   D. S. Shankar Rao,a   Mitsunori Nobusawa,b   Hiroki Akutsu,b   Jun-ichi Yamadab  and  Shin'ichi Nakatsuji*b  

* Corresponding authors

a Centre for Liquid Crystal Research, Jalahalli, Bangalore-560013, India
E-mail: Yelamaggad@gmail.com

b Graduate School of Material Science, University of Hyogo, 3-2-1 Kouto, Kamigori, Hyogo 678-1297, Japan
E-mail: , nakatuji@sci.u-hyogo.ac.jp

Abstract

The synthesis, columnar behaviour and magnetic properties of the first examples of radical discotics are reported. These organic molecular systems with spin sources have been accomplished by covalently linking triphenylene with molecular radicals. The columnar mesomorphism of these new radicals has been established unambiguously using several complementary techniques. Magnetic susceptibility measurements in the fluid columnar, frozen columnar and solid states reveal the antiferromagnetic intermolecular interactions of Curie–Weiss behaviour.

Graphical abstract: The first examples of discotic radicals: columnar mesomorphism in spin-carrying triphenylenes

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Article information

DOI
https://doi.org/10.1039/B805870A
Article type
Paper
Submitted
07 Apr 2008
Accepted
16 May 2008
First published
23 Jun 2008

J. Mater. Chem., 2008,18, 3433-3437

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The first examples of discotic radicals: columnar mesomorphism in spin-carrying triphenylenes

C. V. Yelamaggad, A. S. Achalkumar, D. S. S. Rao, M. Nobusawa, H. Akutsu, J. Yamada and S. Nakatsuji, J. Mater. Chem., 2008, 18, 3433 DOI: 10.1039/B805870A

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