Discotic liquid crystalline materials for potential nonlinear optical applications: synthesis and liquid crystalline behavior of 1,3,5-triphenyl-2,4,6-triazine derivatives containing achiral and chiral alkyl chains at the periphery
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- Title
- Discotic liquid crystalline materials for potential nonlinear optical applications: synthesis and liquid crystalline behavior of 1,3,5-triphenyl-2,4,6-triazine derivatives containing achiral and chiral alkyl chains at the periphery
- Authors
- Lee, H; Kim, D; Lee, HK; Qiu, WF; Oh, NK; Zin, WC; Kim, K
- Date Issued
- 2004-01-26
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Abstract
- As a novel approach to nonlinear optical materials, new octupolar discotic liquid crystalline materials 1,3,5-triphenyl-2,4,6-triazine derivatives containing achiral alkyl chains (5a) and chiral alkyl chains (5b) at the periphery were synthesized. The former exhibits an ordered hexagonal columnar mesophase, whereas the latter displays a rectangular columnar mesophase. The negative exciton splitting observed in the CD spectrum of a thin film of 5b suggests that it has a left-handed helical structure within the column. (C) 2003 Elsevier Ltd. All rights reserved.
- Keywords
- nonlinear optical materials; discotic liquid crystals; left-handed helix; FLUORESCENCE-FREE HYPERPOLARIZABILITIES; SWITCHABLE COLUMNAR METALLOMESOGENS; X-RAY STRUCTURES; 2,4,6-TRIPHENYL-1,3,5-TRIAZINE UNIT; GENERATION EFFICIENCIES; OCTUPOLAR MOLECULES; THREEFOLD SYMMETRY; SUBPHTHALOCYANINES; COMPLEXES; PHTHALOCYANINE
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/29741
- DOI
- 10.1016/j.tetlet.2003.11.085
- ISSN
- 0040-4039
- Article Type
- Article
- Citation
- TETRAHEDRON LETTERS, vol. 45, no. 5, page. 1019 - 1022, 2004-01-26
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