Study of picosecond processes of an intercalated dipyridophenazine Cr(III) complex bound to defined sequence DNAs using transient absorption and time-resolved infrared methods

被引：10

作者：

Devereux, Stephen J. ^{[1
]}

Keane, Paraic M. ^{[2
,3
]}

Vasudevan, Suni ^{[2
]}

Sazanovich, Igor V. ^{[4
]}

Towrie, Michael ^{[4
]}

Cao, Qian ^{[5
]}

Sun, Xue-Zhong ^{[5
]}

George, Michael W. ^{[5
]}

Cardin, Christine J. ^{[3
]}

Kane-Maguire, Noel A. P. ^{[6
]}

Kelly, John M. ^{[2
]}

Quinn, Susan J. ^{[1
]}

机构：

[1] Univ Coll Dublin, Ctr Synth & Chem Biol, Sch Chem & Chem Biol, Dublin 4, Ireland

[2] Univ Dublin Trinity Coll, Sch Chem, Dublin 2, Ireland

[3] Univ Reading, Dept Chem, Reading RG6 6AH, Berks, England

[4] Rutherford Appleton Lab, Sci & Technol Facil Council, Cent Laser Facil, Didcot OX11 0QX, Oxon, England

[5] Univ Nottingham, Dept Chem, Nottingham NG7 2RD, England

[6] Furman Univ, Dept Chem, Greenville, SC USA

来源：

DALTON TRANSACTIONS | 2014年 / 43卷 / 47期

基金：

英国生物技术与生命科学研究理事会;

关键词：

ELECTRON-TRANSFER REACTIONS; GUANINE; POLYNUCLEOTIDES; PHOTOPHYSICS; STATES; DAMAGE;

D O I：

10.1039/c4dt01989j

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Picosecond transient absorption (TA) and time-resolved infrared (TRIR) measurements of rac-[Cr(phen)(2)(dppz)](3+) (1) intercalated into double-stranded guanine-containing DNA reveal that the excited state is very rapidly quenched. As no evidence was found for the transient electron transfer products, it is proposed that the back electron transfer reaction must be even faster (<3 ps).

引用

页码：17606 / 17609

页数：4

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