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首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >Photochemical and Photophysical Properties of Fac-Re(I) Tricarbonyl Complexes: A Comparison of Monomer and Polymer Species with -Re~I(CO)_3Phen Chromophores
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Photochemical and Photophysical Properties of Fac-Re(I) Tricarbonyl Complexes: A Comparison of Monomer and Polymer Species with -Re~I(CO)_3Phen Chromophores

机译：Fac-Re（I）三羰基配合物的光化学和光物理性质：-Re〜I（CO）_3酚生色团的单体和聚合物种类的比较

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摘要

The photochemical and photophysical properties of a polymer containing nearly 200 pendant groups Re(CO)_3(1,10-phenanthroline)~+ bonded to poly-(vynilpyridine)_(600) and the related monomer pyRe(CO)_3(1,10-phenanthroline)~+ were investigated in solution phase. The yield of formation and the kinetics of decay of the MLCT excited state were found to be dependent on medium and laser power. MLCT excited states in the polymer undergo a more efficient annihilation and/or secondary photolysis than in the monomer. In the polymer, redox quenching of MLCT excited states by methyl viologen and by 2,2',2''-nitrilotriethanol revealed the presence of intrastrand electron-transfer processes. These processes exhibited a complex kinetics. Mechanisms of the excited-state annihilation and electron-transfer processes in the polymer are proposed.
机译：包含将近200个侧基Re（CO）_3（1,10-菲咯啉）〜+结合到聚（vynilpyridine）_（600）和相关单体pyRe（CO）_3（1）的聚合物的光化学和光物理性质在溶液相中研究了10-菲咯啉〜+。发现MLCT激发态的形成产率和衰减动力学取决于介质和激光功率。与单体相比，聚合物中的MLCT激发态经历更有效的an灭和/或二次光解。在聚合物中，甲基紫精和2,2'，2''-三氟三乙醇对MLCT激发态的氧化还原猝灭表明存在链内电子转移过程。这些过程表现出复杂的动力学。提出了聚合物中激发态an灭和电子转移过程的机理。

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