受活字印刷启发的可用于信息存储的自愈合荧光液晶弹性体  

Movable type printing-inspired information storage enabled by self-healable fluorescent liquid crystal elastomers

作　　者：高京京 丛晓阳 汤玉婷 郭金宝 Jingjing Gao;Xiaoyang Cong;Yuting Tang;Jinbao Guo(Key Laboratory of Carbon Fibers and Functional Polymers,Ministry of Education,College of Materials Science and Engineering,Beijing University of Chemical Technology,Beijing 100029,China)

机构地区：[1]Key Laboratory of Carbon Fibers and Functional Polymers,Ministry of Education,College of Materials Science and Engineering,Beijing University of Chemical Technology,Beijing 100029,China

出　　处：《Science China Materials》2024年第1期355-362,共8页中国科学（材料科学）（英文版）

基　　金：supported by the National Natural Science Foundation of China (52073017 and 51773009)。

摘　　要：信息存储材料的发展在信息社会的进步中起着关键作用.然而,在光寻址记录信息时,通常每次记录信息都需要更换不同的掩模,这在实际应用中极为不便.本文受活字印刷术的启发,开发了一种可作为信息存储和记录介质的自愈合荧光液晶弹性体.该薄膜在温和的加热条件下经由简单的两阶段胺-丙烯酸酯aza-Michael反应制备而成.由于α-氰基取代二芳基乙烯荧光分子的光异构化,液晶弹性体薄膜表现出光可调的荧光特性.同时,动态硼酸酯键的引入使其具备了优异的自愈合和可重构形状性能.以上述荧光液晶弹性体薄膜作为存储介质,概念验证性地展示了活字印刷驱动的信息记录,该方法避免了重复更换光掩膜,并延长了存储材料的使用寿命.这项工作为开发易于使用的、可大面积制备的信息存储材料提供了有益的启示.The development of information storage ma-terials plays a key role in the advancement of the information society.However,the storage of fluorescent information using photoresponsive molecules requires various different masks,and each change in the stored information needs to be re-placed with a new type of mask,which causes inconvenience for the information recording.Here,inspired by movable type printing,a phototunable,self-healable fluorescent liquid crystal elastomer(FLCE)serving as an information storage medium is developed using a simple two-stage amine-acrylate aza-Michael reaction under mild heating.The obtained FLCE film exhibits phototunable fluorescence properties due to Z/E photoisomerization of theα-cyanodiarylethene molecules and shows excellent self-healing and reconfigurable shape cap-ability by introducing dynamic boronic ester bonds.With the FLCE films as storage media,proof-of-concept movable type printing-motivated information recordings are demonstrated,thus avoiding repeated photomask replacement and prolong-ing the service life of the storage materials.This work provides valuable insight for the development of easy-to-use and large-area information storage materials.

关 键 词：信息存储 存储材料 液晶弹性体 存储介质 记录介质 信息记录 自愈合 光异构化 

分 类 号：O753.2[理学—晶体学]