Photophysical Properties and Singlet Oxygen Production by Ruthenium(II) Complexes of Benzo[i]dipyrido[3,2-a:2′,3′-c]phenazine: Spectroscopic and TD-DFT Study

被引：86

作者：

Foxon, Simon P. ^{[1
]}

Alamiry, Mohammed A. H. ^{[1
]}

Walker, Mike G. ^{[1
]}

Meijer, Anthony J. H. M. ^{[1
]}

Sazanovich, Igor V. ^{[1
]}

Weinstein, Julia A. ^{[1
]}

Thomas, James A. ^{[1
]}

机构：

[1] Univ Sheffield, Dept Chem, Sheffield S3 7HF, S Yorkshire, England

来源：

JOURNAL OF PHYSICAL CHEMISTRY A | 2009年 / 113卷 / 46期

基金：

英国工程与自然科学研究理事会; 英国生物技术与生命科学研究理事会;

关键词：

G-QUADRUPLEX DNA; LIGHT-SWITCH; DIPYRIDOPHENAZINE COMPLEXES; EXCITED-STATES; AB-INITIO; BINDING; RECOGNITION; APPROXIMATION; PICOSECOND; SOLVATION;

D O I：

10.1021/jp906716g

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The photophysical properties of a series of Ru-II complexes containing benzo[i]dipyrido[3,2-a:2',3'-c]phenazine (dppn) as a ligand are reported. Transient absorption spectroscopy studies indicate that, in contrast to related Ru(dppz) complexes (dppz = dipyrido[3,2-a:2',3'-c]phenazine), the excited state of all the dppn systems is a long-lived pi pi* triplet state. Computational studies (DFT and TD-DFT) confirm that the excited state is based on the dppn ligand. Near-infrared luminescence studies reveal that the complexes are efficient singlet oxygen sensitizers with yields of 70-83%.

引用

页码：12754 / 12762

页数：9

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