The electro-optical study of banana liquid crystal with different linking group and different length of terminal group
碩士 === 國立臺灣科技大學 === 高分子工程系 === 93 === The purpose of study was to changed linking group of bent-core liquid crystal to measure electro-optical character. These compounds were as (1) 1,3-phenylenebis[4-(4-tetradecanoyl oxybenzoyloxybenzoate(Ba-1) and (2) N,N-bis[4-(4-n-4-tetradecanoyloxybenzoyloxy) B...
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| Format: | Others |
| Language: | zh-TW |
| Published: |
2005
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| Online Access: | http://ndltd.ncl.edu.tw/handle/25044400701451488331 |
| Summary: | 碩士 === 國立臺灣科技大學 === 高分子工程系 === 93 === The purpose of study was to changed linking group of bent-core liquid crystal to measure electro-optical character. These compounds were as (1) 1,3-phenylenebis[4-(4-tetradecanoyl oxybenzoyloxybenzoate(Ba-1) and (2) N,N-bis[4-(4-n-4-tetradecanoyloxybenzoyloxy) Benzylidene] -phenylene-1,3-diamines(Ba-2),the phase sequence and transition temperature of compounds in the study were measured by DSC and POM.
In polarization switching experiments, it was proven that bent-core liquid crystal having antiferroelectric character because of double peaks under the application of a triangular-wave electric field. We also discussed the dielectric behavior between high frequency and low frequency in the B2 phase.
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