Highly Efficient Photoproduction of Charge-Separated States in Donor−Acceptor-Linked Bis(acetylide) Platinum Complexes
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- 作者：Shuichi Suzuki ; Ryoji Sugimura ; Masatoshi Kozaki ; Kazutoshi Keyaki ; Koichi Nozaki ; Noriaki Ikeda ; Kimio Akiyama ; Keiji Okada
- 刊名：Journal of the American Chemical Society
- 出版年：2009
- 出版时间：August 5, 2009
- 年：2009
- 卷：131
- 期：30
- 页码：10374-10375
- 全文大小：141K
- 年卷期：v.131,no.30(August 5, 2009)
- ISSN：1520-5126
文摘
We report a highly efficient charge separation system, D−Pt−A, where D (triphenylamine) and A (naphthalenediimide) are bonded to the Pt moiety through highly twisted phenylene ethynylene linkages. The quantum yields for the formation of the charge-separated state were determined to be nearly unity. The lifetimes of D+−Pt−A− were 1 μs at room temperature and much longer at low temperature. The spin-correlated radical ion pair was directly observed by means of time-resolved EPR spectroscopy.