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Characterization of immobilized layer formed with adsorbed monolayer and linear molecules through infrared reflection spectroscopy

通过红外反射光谱表征吸附单层和线性分子形成的固定层

基本信息

批准号：
23550148
负责人：
HISADA Kenji
金额：
$ 3.49万
依托单位：
University of Fukui
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2011
资助国家：
日本
起止时间：
2011 至 2013
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23550148/
关键词：
潤滑界面不動層アルキル鎖間相互作用チェーン・マッチング効果光学増幅水晶振動子微量天秤アドミッタンス解析法 ATR-FTIR分光法全反射赤外分光法ネマチック液晶チェーイン・マッチング効果国際情報交流イギリスターゲット因子解析

项目摘要

Sandwich cell was prepared with a glass substrate which coated with monolayer having linear alkyl tail. When 4-cyano-4'-n-pentyl-biphenyl (5CB) was penetrated into this cell, LC phase was observed by polarized microscope. The observed texture was similar to those for the monolayer on the surface of the water. When the length of alkyl tail was 16 or 18, the induced orientation of 5CB was observed even if the chain density was 5.0 chain/nm2. On the other hand, it was revealed that the induced orientation was restricted when the number of carbon was 20. Orientation control does not motivated through interdigitation of LC tail and the alkyl chain of the adsorption films. In addition, I showed that the fluidity (mobility) of the alkyl chain which came in contact with a liquid crystalline aspect in liquid crystalline temperature (22.5-35 degrees Celsius) of 5CB was important when this instruction orientation occurred.

在具有线性烷基尾的单层玻璃衬底上制备了夹层电池。当4-氰基-4′-n-戊基联苯（5CB）穿透细胞后，在极化显微镜下观察LC相。观察到的纹理与水表面的单层相似。当烷基尾长度为16或18时，即使链密度为5.0链/nm2，也能观察到5CB的诱导取向。另一方面，当碳数为20时，诱导取向受到限制。取向控制不是通过LC尾与吸附膜烷基链的交叉作用来实现的。此外，我证明了在5CB的液晶温度（22.5-35摄氏度）下，与液晶方面接触的烷基链的流动性（迁移率）在此指令取向发生时是重要的。