HUANG Jiang-tao, YOU Hong-jun, ZHANG Zhi-yong, GUAN Jin-tao, DAI Zhi-qun, ZHANG Kai-cheng. Synthesis and Property of Bent-Core Liquid Crystal Compounds with Carbonyl Central Unit[J]. , 2013,28(5): 668-673
HUANG Jiang-tao, YOU Hong-jun, ZHANG Zhi-yong, GUAN Jin-tao, DAI Zhi-qun, ZHANG Kai-cheng. Synthesis and Property of Bent-Core Liquid Crystal Compounds with Carbonyl Central Unit[J]. , 2013,28(5): 668-673 DOI: 10.3788/YJYXS20132805.0668.
A novel series of bent-core molecules (mPEPK) was prepared with a central bent core based on 4
4-dihydroxybenzophenone (DHBP)
ester group bridge(COO)
and alkyl tails with different carbon numbers (
m
= 5
6
7
8
9
10.). The structures of the titled compounds were confirmed by IR
1
H NMR
13
C NMR
MS spectra
and their transition temperatures and phase textures were investigated by using differential scanning calorimetric(DSC) and polarizing optical microscopy(POM). A part of the compounds exist smectic phase. Comparing with the similar compounds
the target compounds (m-PEPK) have declined to a great extent in liquid crystalline phase transition temperatures.
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references
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