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Synthesis and Photophysics of a Red-Light Absorbing Supramolecular Chromophore System

机译:吸收红光的超分子发色团体系的合成与光物理

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In search of supramolecular antenna systems for light-harvesting applications, we report on a short and effective synthesis of a fused NDI–zinc–salphen-based chromophore (salphen = bis-salicylimide phenylene) and its photophysical properties. A supramolecular recognition motif is embedded into the chromophoric p-system of this compound. The fused p-chromophore behaves as one pigment, absorbs light between 600 and 750 nm and displays a modest Stokes shift. Upon binding pyridines, the compound (DATZnS) does not change its redox potentials, does not undergo any internal excited state quenching and does not appreciably alter its excited state lifetime. These notable properties define DATZnS as an alternative to porphyrinbased components used in supramolecular light-harvesting architectures.
机译:在用于光收集应用的超分子天线系统中,我们报道了一种短而有效的基于NDI-锌-沙芬基的生色团(沙芬=双-水杨酰亚胺苯)的合成及其光物理性质。超分子识别基序嵌入该化合物的发色p系统中。熔融的对位生色团表现为一种颜料,吸收600至750 nm之间的光并显示适度的斯托克斯位移。结合吡啶后,化合物(DATZnS)不会改变其氧化还原电位,不会经历任何内部激发态猝灭,并且不会明显改变其激发态寿命。这些显着的特性将DATZnS定义为超分子光采集架构中使用的卟啉基成分的替代品。

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