Recent advances towards azobenzene-based light-driven real-time information-transmitting materials.

Recent advances towards azobenzene-based light-driven real-time information-transmitting materials.
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DOI:
10.3762/bjoc.8.113
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发表时间:
2012
影响因子:
2.7
通讯作者:
Velasco D
Velasco D
中科院分区:
化学4区
文献类型:
--
作者:
García-Amorós J;Velasco D

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在过去的几十年里,能够以快速方式传输信息的光致变色开关在材料科学中引起了越来越大的兴趣。尽管已经成功地实现了基于其他发色团(例如螺吡喃)在数百纳秒内工作的非常快速的光致变色开关材料,但是对于基于偶氮苯的光致变色分子开关而言达到如此快的弛豫时间仍然是一个挑战。本文综述了偶氮苯光驱动实时信息传输系统的最新研究成果。此外,偶氮发色团的结构特征与热顺反异构化的主要关系,动力学和机制也进行了讨论,作为获得具有快速热反异构化动力学的偶氮衍生物的关键点。
Photochromic switches that are able to transmit information in a quick fashion have attracted a growing interest within materials science during the last few decades. Although very fast photochromic switching materials working within hundreds of nanoseconds based on other chromophores, such as spiropyranes, have been successfully achieved, reaching such fast relaxation times for azobenzene-based photochromic molecular switches is still a challenge. This review focuses on the most recent achievements on azobenzene-based light-driven real-time information-transmitting systems. Besides, the main relationships between the structural features of the azo-chromophore and the thermal cis-to-trans isomerisation, the kinetics and mechanism are also discussed as a key point for reaching azoderivatives endowed with fast thermal back-isomerisation kinetics.
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