Conformation‐Controlled Diplatinum(II)–Ferrocene Dyads to Achieve Long‐Lived Charge‐Separated States. Issue 34 (15th July 2016)

• Record Type: Journal Article
• Authors: Wang, Ge‐Xia; Feng, Ke; Crossley, Maxwell J.; Xing, Ling‐Bao; Xiao, Hong‐Yan; Li, Wen; Tung, Chen‐Ho; Wu, Li‐Zhu
• Is Part Of: Chemistry. Volume 22:Issue 34(2016)
• Page Start: 11962
• Page End: 11966
• Publication Date: 2016-07-15
• Subjects: dyads -- ferrocene -- long-lived charge separation -- photoinduced electron transfer -- platinum(II) complexes; Chemistry -- Periodicals; 540
• DOI: 10.1002/chem.201601085
• Languages: English
• ISSNs: 0947-6539

Abstract

Abstract: 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 dyad1 and closed‐butterfly‐like dyad2, 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 dyad1, the closed‐butterfly‐like dyad2 shows three‐times long lifetime of charge separated state upon photoexcitation, demonstrating that the orientation in the rigid structure of dyad2 is a very important issue to achieve long‐lived charge separated state. Abstract : Square‐planar polypyridyl Pt II complexes are ideal for artificial photosynthetic centers. Taking advantage of the directionality in the charge‐transfer excitation from metal to polypyridyl ligand, diplatinum(II)–ferrocene dyads with open‐ and closed‐butterfly‐like structures were synthesized to understand the conformation and orientation effects to prolong the lifetime of the charge‐separated state upon photoexcitation.