Accelerated electron transfer between metal complexes mediated by DNA.
Accelerated electron transfer between metal complexes mediated by DNA.
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DNA 介导的金属复合物之间的加速电子转移。
DOI：
10.1126/science.3420416
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发表时间：
1988
期刊：
影响因子：
56.9
通讯作者：
Jacqueline K. Barton
中科院分区：
文献类型：
--
作者：
Michael D. Purugganan;Challa V. Kumar;N. Turro;Jacqueline K. Barton
DNA介导的长程电子从钌的光激发的1，10-菲咯啉络合物Ru（phen）2（3）+转移到沿着螺旋链结合的钴（III）、铑（III）和铬（III）的同构络合物。转移效率取决于结合方式和驱动力。对于一个给定的供体-受体对，表面结合的复合物表现出更大的速率增强比那些插层结合。即使在253 K的刚性甘油中，与DNA结合的供体-受体对的速率仍然增强。对于该系列受体，发现中间驱动力受体铬对电子转移速率的增强作用最大。DNA聚合物似乎提供了一种有效的中间介质，以偶联供体和受体金属络合物进行电子转移。
DNA-mediated long-range electron transfer from photoexcited 1,10-phenanthroline complexes of ruthenium, Ru(phen)2(3)+, to isostructural complexes of cobalt(III), rhodium(III), and chromium(III) bound along the helical strand. The efficiency of transfer depended upon binding mode and driving force. For a given donor-acceptor pair, surface-bound complexes showed greater rate enhancements than those that were intercalatively bound. Even in rigid glycerol at 253 K, the rates for donor-acceptor pairs bound to DNA remained enhanced. For the series of acceptors, the greatest enhancement in electron-transfer rate was found with chromium, the acceptor of intermediate driving force. The DNA polymer appears to provide an efficient intervening medium to couple donor and acceptor metal complexes for electron transfer.
影响因子：
2.9
作者：
BERG, OG;WINTER, RB;VONHIPPEL, PH
通讯作者：
VONHIPPEL, PH