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Proceedings Paper

Helical-chiral triphenylene liquid crystals
Author(s): Klaus Praefcke; D. Blunk; A. Eckert
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Paper Abstract

Electrophilic reactions at the molecular core of (flat) 2,3,6,7,10,11-hexa(alkoxy)triphenylene lead mainly to seven fold substituted derivatives. Surprisingly, despite their overcrowded and therefore, grossly distorted structure, these products exhibit the same type of columnar mesophase as their precursors do, however, usually wider in range which may even be more stable. Semi-empirical calculations on such novel hexaethers with one or two additional and in most cases electron withdrawing substituents reveal clearly that these new molecules are twisted due to the crowding in them. Therefore, these triphenylene derivatives are potentially helical-chiral. Attempts in connection with their resolution into the first enantiomers of this kind in triphenylene chemistry are an interesting challenge and, therefore, in progress.

Paper Details

Date Published: 1 January 1998
PDF: 6 pages
Proc. SPIE 3319, Liquid Crystals: Chemistry and Structure, (1 January 1998); doi: 10.1117/12.301248
Show Author Affiliations
Klaus Praefcke, Technische Univ. Berlin (Germany)
D. Blunk, Technische Univ. Berlin (Germany)
A. Eckert, Technische Univ. Berlin (Germany)

Published in SPIE Proceedings Vol. 3319:
Liquid Crystals: Chemistry and Structure
Marzena Tykarska; Roman S. Dabrowski; Jerzy Zielinski, Editor(s)

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