A Thermo- and Mechanoresponsive Cyano-Substituted Oligo(p-phenylene vinylene) Derivative with Five Emissive States
A Thermo- and Mechanoresponsive Cyano-Substituted Oligo(p-phenylene vinylene) Derivative with Five Emissive States
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DOI：
10.1002/chem.201600272
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发表时间：
2016-03-18
影响因子：
4.3
通讯作者：
Weder, Christoph
中科院分区：
文献类型：
--
作者：
Sagara, Yoshimitsu;Lavrenova, Anna;Weder, Christoph
多响应材料在暴露于不同刺激时显示预定义的光致发光颜色变化，是先进传感方案的有吸引力的候选者。在此，我们报道了一种氰基取代寡聚（对苯基乙烯）（氰基opv）衍生物，它可以形成五种不同的无溶剂固态分子组件，其发光特性在热刺激和机械刺激下发生变化。单晶x射线结构分析表明，在氰基opv的增溶侧链末端引入的甲基对其固态排列起关键作用。从更广泛的角度来看，本报告表明，引入竞争性分子间相互作用到准分子形成的发色团中是一种很有前途的设计策略，用于多色热响应和机械响应发光材料。
Multiresponsive materials that display predefined photoluminescence color changes upon exposure to different stimuli are attractive candidates for advanced sensing schemes. Herein, we report a cyano-substituted oligo(p-phenylene vinylene) (cyano-OPV) derivative that forms five different solvent-free solid-state molecular assemblies, luminescence properties of which change upon thermal and mechanical stimulation. Single-crystal X-ray structural analysis suggested that tolyl groups introduced at the termini of solubilizing side-chains of the cyano-OPV play a pivotal role in its solid-state arrangement. Viewed more broadly, this report shows that the introduction of competing intermolecular interactions into excimer-forming chromophores is a promising design strategy for multicolored thermo- and mechanoresponsive luminescent materials.