| 双核多吡啶铂(Ⅱ)-紫精二元电子给受体体系的光诱导电子转移 |
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| 引用本文： | 王格侠,史晓燕,冯科,邢令宝,张丽萍,佟振合,吴骊珠.双核多吡啶铂(Ⅱ)-紫精二元电子给受体体系的光诱导电子转移[J].科学通报,2012(7):514-518. |
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| 作者姓名： | 王格侠 史晓燕 冯科 邢令宝 张丽萍 佟振合 吴骊珠 |
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| 作者单位： | 中国科学院理化技术研究所光化学转换与功能材料重点实验室 |
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| 基金项目： | 国家自然科学基金(91027041,21090343,21002108,20973189);国家重点基础研究发展计划(2009CB220008);裘槎基金资助 |
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| 摘 要： | 设计合成了紫精(MV2+)桥连4′-(4-甲基-苯基)-2,2′:6′,2′′-三联吡啶铂(Ⅱ)(4-CH3-PhN^N^NPtCl)的双核配合物1,{MV2+(4-CH2PhN^N^NPtCl)22+]·4PF6–}.利用紫外可见吸收光谱、发光光谱、电化学循环伏安谱以及瞬态吸收光谱研究了体系的光诱导电子转移过程,发现在乙腈/甲醇混合溶剂中该二元体系光诱导电子转移的速率常数kCS大于1.4×108s–1,电子回传的速率常数kCR大于2.1×103s–1,电荷分离态寿命长达479μs.
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| 关 键 词： | 光诱导电子转移 电荷分离 三联吡啶铂(Ⅱ) 配合物 紫精自由基 |
Photoind1uced electron transfer in a dinuclear platinum(Ⅱ)-viologen dyad |
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| WANG GeXia, SHI XiaoYan, FENG Ke, XING LingBao, ZHANG LiPing, TUNG ChenHo & WU LiZhu.Photoind1uced electron transfer in a dinuclear platinum(Ⅱ)-viologen dyad[J].Chinese Science Bulletin,2012(7):514-518. |
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| Authors: | WANG GeXia SHI XiaoYan FENG Ke XING LingBao ZHANG LiPing TUNG ChenHo & WU LiZhu |
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| Institution: | Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Science, Beijing 100190, China, |
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| Abstract: | A novel dinuclear platinum (II) dyad 1 {MV2+(4-CH2PhN^N^NPtCl)22+]·4PF6-} with terpyridyl platinum(II) chromophore and viologen acceptor was synthesized in this work. Spectroscopic and electrochemical studies demonstrated the photoinduced electron transfer process taking place in the dyad. Time decay profiles at 400 and 600 nm for viologen radical cation gave the rate constants for charge separation kCS > 1.4×108 s–1 and charge recombination kCR = 2.1×103 s–1, respectively. The lifetime for the charge separated state is up to 479 μs in MeOH/CH3CN at room temperature. |
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| Keywords: | photoinduced electron transfer charge separation terpyridyl platinum(II) complex viologen radical cation |
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