Citation: Ping Yu, Zhen-Lin Zhang, Lei Wang, Chun-Luan Liu, Shi-Min Liu, Hai-Quan Zhang. Effects of molecular configuration of a chiral trimeric phenylene vinylene on its liquid crystalline properties[J]. Chinese Chemical Letters, ;2013, 24(05): 397-400. shu

Effects of molecular configuration of a chiral trimeric phenylene vinylene on its liquid crystalline properties

1.
State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China

Corresponding author: Hai-Quan Zhang,
Received Date: 19 December 2012
Available Online: 31 January 2013

Based on an analysis of the ¹H NMR, FT-IR, UV-vis spectra, a chiral trimeric phenylene vinylene derivative (ChTPV) synthesized by a Wittig reaction was determined to have a trans-cis configuration, and it could be isomerized to the trans-trans isomer when treated with iodine. The melting point of ChTPV with a trans-trans configuration increased by 162.1℃ compared to the trans-cis isomer, and the ChTPV with trans-trans configuration exhibited the typical liquid-crystalline texture of the smectic A in the heating process. The results indicated that the molecular configuration can influence the formation of the liquid crystalline phase of ChTPV.
- Oligomer phenylene vinylene,
- Configuration,
- Liquid crystalline
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1.
沈阳化工大学材料科学与工程学院沈阳 110142