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Advanced Photoresponsive Materials Using the Metal-Organic Framework Approach

机译:使用金属有机框架方法的先进光响应材料

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Abstract When fabricating macroscopic devices exploiting the properties of organic chromophores, the corresponding molecules need to be condensed into a solid material. Since optical absorption properties are often strongly affected by interchromophore interactions, solids with a well‐defined structure carry substantial advantages over amorphous materials. Here, the metal–organic framework (MOF)‐based approach is presented. By appropriate functionalization, most organic chromophores can be converted to function as linkers, which can coordinate to metal or metal‐oxo centers so as to yield stable, crystalline frameworks. Photoexcitations in such chromophore‐based MOFs are surveyed, with a special emphasis on light‐switchable MOFs from photochromic molecules. The conventional powder form of MOFs obtained using solvothermal approaches carries certain disadvantages for optical applications, such as limited efficiency resulting from absorption and light scattering caused by the (micrometer‐sized) powder particles. How these problems can be avoided by using MOF thin films is demonstrated.
机译:摘要在制造利用有机发色团的性质的宏观装置时,需要将相应的分子冷凝成固体材料。由于光学吸收特性通常受到间同学相互作用的强烈影响,因此具有明确定义的结构的固体具有与非晶材料的实质优势。这里,介绍了基于金属有机框架(MOF)的方法。通过适当的官能化,大多数有机发色团可以转化为用作接头,其可以与金属或金属 - 氧代中心协调,以产生稳定的晶体框架。根据光致变色分子调查了这种基于色团的MOF的这种基于色团的MOF的光学渗透,特别强调了可轻松的可轻松的MOF。使用溶剂热方法获得的MOF的常规粉末形式具有用于光学应用的某些缺点,例如由(微米尺寸的)粉末颗粒引起的吸收和光散射产生的有限效率。如何通过使用MOF薄膜来避免这些问题。

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