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首页> 外文会议>Liquid Crystals VIII >Photostimulated structural changes of liquid crystal physical gels
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Photostimulated structural changes of liquid crystal physical gels

机译：液晶物理凝胶的光刺激结构变化

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Photoresponsive liquid crystal physical gels are formed from a hydrogen-bonded gelator containing photochromic azobenzene moieties and nematic or discotic liquid crystals. The bistable gel structures based on the trarns-azobenzene gelator could be achieved by combining the trans-cis photoisomerization of the azobenzene moieties and thermal treatment. Upon UV irradiation, the trans-cis photoisomerization causes the transition from the initial gel states to the liquid crystal sol states. The cis-trans back-isomerization causes reaggregation of the trans-gelator in the liquid crystals. This leads to the formation of the second gel states which have the structures reflecting the liquid crystal order. The initial gel states can be reversibly changed to the reformed gel states by photoirradiation and thermal treatments. The photo-induced reversible structural changes of the anisotropic physical gels are applied to rewritable information recordings.
机译：由包含光致变色偶氮苯部分和向列或盘状液晶的氢键合凝胶剂形成光敏液晶物理凝胶。通过结合偶氮苯部分的反式-顺式光异构化和热处理，可以实现基于Trarns-偶氮苯胶凝剂的双稳态凝胶结构。在紫外线照射下，反式顺式光致异构化导致从初始凝胶态转变为液晶溶胶态。顺反反异构化导致反胶凝剂在液晶中重新聚集。这导致形成具有反映液晶顺序的结构的第二凝胶态。初始凝胶态可以通过光辐照和热处理可逆地改变为重整的凝胶态。各向异性物理凝胶的光诱导可逆结构变化被应用于可重写信息记录。

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