Mechanoresponsive Luminescent Molecular Assemblies: An Emerging Class of Materials
Mechanoresponsive Luminescent Molecular Assemblies: An Emerging Class of Materials
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DOI：
10.1002/adma.201502589
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发表时间：
2016-02-10
影响因子：
29.4
通讯作者：
Kato, Takashi
中科院分区：
文献类型：
--
作者：
Sagara, Yoshimitsu;Yamane, Shogo;Kato, Takashi
通过机械刺激改变有机和有机金属材料的分子组装结构的可能性正在成为功能材料设计的一般和强大的概念。特别地，有机和有机金属荧光团的光致发光颜色、量子产率和发射寿命等光物理性质可以显著地取决于分子堆积，使得能够开发具有机械响应发光特性的分子材料。事实上，近年来越来越多的研究表明，机械力可以用来改变共轭有机或有机金属分子的发光分子组件的分子排列，从而改变其光学响应。本文综述了由有机或金属有机分子组成的机械响应发光（MRL）分子组装体的研究进展，并对该领域的研究趋势进行了总结。在简要介绍了分子组装体中的机械响应发光之后，引入了发光分子多米诺的概念，并对机械刺激下光致发光的开启/关闭的分子材料进行了综述。机械刺激的相变和水溶性MRL材料也被强调，并在本进度报告的最后一部分介绍了将MRL分子组装体的概念与其他材料类型联合收割机相结合的方法。
The possibility to change the molecular assembled structures of organic and organometallic materials through mechanical stimulation is emerging as a general and powerful concept for the design of functional materials. In particular, the photophysical properties such as photoluminescence color, quantum yield, and emission lifetime of organic and organometallic fluorophores can significantly depend on the molecular packing, enabling the development of molecular materials with mechanoresponsive luminescence characteristics. Indeed, an increasing number of studies have shown in recent years that mechanical force can be utilized to change the molecular arrangement, and thereby the optical response, of luminescent molecular assemblies of -conjugated organic or organometallic molecules. Here, the development of such mechanoresponsive luminescent (MRL) molecular assemblies consisting of organic or organometallic molecules is reviewed and emerging trends in this research field are summarized. After a brief introduction of mechanoresponsive luminescence observed in molecular assemblies, the concept of luminescent molecular domino is introduced, before molecular materials that show turn-on/off of photoluminescence in response to mechanical stimulation are reviewed. Mechanically stimulated multicolor changes and water-soluble MRL materials are also highlighted and approaches that combine the concept of MRL molecular assemblies with other materials types are presented in the last part of this progress report.