Fluorescence properties of the dicationic porphyrin 5,15-DiMPyP orderly aggregated along DNA surface

被引：6

作者：

Sazanovich, Igor ^{[1
]}

Panarin, Andrei ^{[2
]}

Stupak, Alexander ^{[2
]}

Terekhov, Sergei ^{[2
]}

Chirvony, Vladimir ^{[3
]}

机构：

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

[2] Natl Acad Sci Belarus, BI Stepanov Phys Inst, Minsk 220072, BELARUS

[3] Univ Politecn Valencia, Nanophoton Technol Ctr, Valencia 46022, Spain

来源：

PHOTOCHEMICAL & PHOTOBIOLOGICAL SCIENCES | 2008年 / 7卷 / 09期

关键词：

D O I：

10.1039/b806282j

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

5,15-Bis(4-N-methylpyridyl)-10,20-diphenylporphyrin (5,15-DiMPyP, also known as t-H2Pagg) is capable of forming long-range ordered DNA-templated aggregates in Solution. The present work reports the study Of fluorescent properties of 5,15-DiMPyP, both monomeric and aggregated ill presence of DNA, performed by means of steady-state and time-resolved fluorescence spectroscopy. The S, state of free monomeric 5,15-DiMPyP is affected by a low-lying intramolecular charge transfer state which is destabilized upon porphyrin monomer binding to DNA. The aggregates, DNA-templated and random, of 5,15-DiMPyP were found to be emissive in solution and had respective S, state lifetimes of 1.8 ns and 5.2 ns.

引用

页码：1091 / 1098

页数：8

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