Aggregation-induced emission and aggregation-promoted photochromism of bis(diphenylmethylene)dihydroacenes.

Aggregation-induced emission and aggregation-promoted photochromism of bis(diphenylmethylene)dihydroacenes.
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DOI:
10.1039/c5sc00900f
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发表时间:
2015-06-01
期刊:
影响因子:
8.4
通讯作者:
Tang BZ
Tang BZ
中科院分区:
化学1区
文献类型:
--
作者:
He Z;Shan L;Mei J;Wang H;Lam JWY;Sung HHY;Williams ID;Gu X;Miao Q;Tang BZ

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二(二苯亚甲基)二氢四苯类化合物由于嵌入的顺式二苯乙烯基元发生光环化反应,产生了固态光致变色。本文报道了一类新的纯多环烃分子,通过一种新的聚集诱导发射(AIE)策略设计,具有意想不到的光致变色性质。分子内运动的限制是AIE效应的综合机制。光致变色机理研究表明,顺式二苯乙烯的光环化反应、单晶中的分子构象和四茂铁主链对其独特的光致变色行为有一定的贡献。特别是固体中的快速响应、光可逆和热不可逆的光致变色效应,开辟了聚集促进光致变色的新领域。
Solid-state photochromism was found in bis(diphenylmethylene)dihydrotetracene, caused by photocyclization of the embedded cis-stilbene motifs. Reported herein is a new class of pure polycyclic hydrocarbon molecules, designed through a novel aggregation-induced emission (AIE) strategy, with unexpected photochromic properties. The restriction of intramolecular motion was found as a comprehensive mechanism for the AIE effect. The photochromism mechanism study revealed that the photocyclization reaction of cis-stilbene, the molecular conformation in the single crystal and the tetracene backbone should contribute to the unique photo behavior. In particular, the fast responsive, photo-reversible and thermo-irreversible photochromic effect facilitated in the solid state opens a new field of aggregation-promoted photochromism.
DOI: 10.1039/c4sc03365e
发表时间: 2015-03-01
期刊: Chemical science
影响因子: 8.4
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