Conformation-Controlled Diplatinum(II)-Ferrocene Dyads to Achieve Long-Lived Charge-Separated States

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• 作者：Dr. Ge-Xia Wang ; Dr. Ke Feng ; Prof. Maxwell J. Crossley ; Dr. Ling-Bao Xing ; Dr. Hong-Yan Xiao ; Prof. Dr. Wen Li ; Prof. Dr. Chen-Ho Tung and Prof. Li-Zhu Wu
• 刊名：Chemistry - A European Journal
• 出版年：2016
• 出版时间：August 16, 2016
• 年：2016
• 卷：22
• 期：34
• 页码：11962-11966
• 全文大小：911K
• ISSN：1521-3765

文摘

Square-planar polypyridyl platinum(II) complexes possess a rich range of structural and spectroscopic properties that are ideal for designing artificial photosynthetic centers. Taking advantage of the directionality in the charge-transfer excitation from the metal to the polypyridyl ligand, we describe here diplatinum(II)–ferrocene dyads, open-butterfly-like dyad 1 and closed-butterfly-like dyad 2, which were designed to understand the conformation and orientation effects to prolong the lifetime of charge-separated state. In contrast to the open-butterfly-like dyad 1, the closed-butterfly-like dyad 2 shows three-times long lifetime of charge separated state upon photoexcitation, demonstrating that the orientation in the rigid structure of dyad 2 is a very important issue to achieve long-lived charge separated state.