Modulation of Energy Transfer into Sequential Electron Transfer upon Axial Coordination of Tetrathiafulvalene in an Aluminum(III) Porphyrin–Free-Base Porphyrin Dyad
作者:Prashanth K. Poddutoori、Lucas P. Bregles、Gary N. Lim、Patricia Boland、Russ G. Kerr、Francis D’Souza
DOI:10.1021/acs.inorgchem.5b01190
日期:2015.9.8
Axially assembled aluminum(III) porphyrin based dyads and triads have been constructed to investigate the factors that govern the energy and electron transfer processes in a perpendicular direction to the porphyrin plane. In the aluminum(III) porphyrin–free-base porphyrin (AlPor-Ph-H2Por) dyad, the AlPor occupies the basal plane, while the free-base porphyrin (H2Por) with electron withdrawing groups
已构建了轴向组装的铝(III)卟啉二元组和三元组,以研究在垂直于卟啉平面的方向上控制能量和电子转移过程的因素。在铝(III)卟啉-游离碱卟啉(AlPor-Ph-H 2 Por)二聚体中,AlPor占据基面,而带有吸电子基团的游离碱卟啉(H 2 Por)则位于轴向通过苯甲酸酯间隔基。NMR,UV可见吸收和稳态荧光研究证实,在非配位溶剂中,吡啶与四硫富瓦烯(TTF)衍生物(TTF-py或TTF-Ph-py)配位的配位配体可实现垂直排列的超分子自组装三联体(TTF-py→AlPor-Ph-H 2Por和TTF-Ph-py→AlPor-Ph-H 2 Por)。时间分辨研究表明,二元组和三元组中的AlPor经历了光诱导的能量和/或电子转移过程。有趣的是,可以通过改变溶剂极性或通过使用TTF分子刺激新的竞争过程来调节AlPor的能量和给电子/接受电子的性质。在中等极性溶剂(二氯甲烷和邻二氯苯)中,Al