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.
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)
基金
supported by the National Natural Science Foundation of China (52073017 and 51773009)。
