Control homogeneous alignment of chiral nematic liquid crystal with smectic-like short-range order by thermal treatment

Control homogeneous alignment of chiral nematic liquid crystal with smectic-like short-range order by thermal treatment
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通过热处理控制具有类近晶短程有序的手性向列液晶的均匀排列

DOI:
10.1016/j.colsurfa.2012.05.049
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发表时间:
2012-09
期刊:
Colloids and Surfaces A: Physicochemical and Engineering Aspects
影响因子:
--
通讯作者:
杨槐
杨槐
中科院分区:
其他
文献类型:
--
作者:
王菲菲;曹晖;李克轩;宋平;武晓娟;杨槐

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本研究表明,类微晶短程有序(SSO)为改善手性向列相液晶(N*-LC)分子的平面取向提供了机会,同时提高了N*-LC电池的透光率。首先将N*-近晶A (SmA)跃迁之间形成的单点登录引入到N*-LC组合物中,然后在单点登录温度(TSSO)下进行特定的热处理。最后,得到了N*-LC分子的均匀排列。降低加热速率和延长tsso保温时间可以有效减少N*-LC电池的油纹,改善其平面织构。该方法也适用于不同节距的N*-LC复合材料。
This study indicated that the smectic-like short-range order (SSO) provided an opportunity to improve the planar orientation of chiral nematic liquid crystal (N*-LC) molecules while increasing the light transmittance of the N*-LC cells. The SSO formed between N*-smectic A (SmA) transition was first introduced into N*-LC compositions and then applied a specific thermal process at the temperature of SSO (TSSO). Finally, the uniform alignment of the N*-LC molecules was obtained. Decreasing the heating rate and extending the holding time at TSSOwere effective at reducing the oily streak and perfecting the planar texture of the N*-LC cells. And this method was also resultful for N*-LC composites exhibited different pitches.
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