Photophysical and electrochemical properties of sterically crowded polyarylated boron-dipyrromethenes

被引：14

作者：

Lakshmi, Vellanki ^{[1
]}

Ravikanth, Mangalampalli ^{[1
]}

机构：

[1] Indian Inst Technol, Dept Chem, Bombay 400076, Maharashtra, India

来源：

CHEMICAL PHYSICS LETTERS | 2013年 / 564卷

关键词：

BODIPY DYES; LASER-DYES; DERIVATIVES; SPECTROSCOPY; CHEMISTRY;

D O I：

10.1016/j.cplett.2013.02.023

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 absorption, fluorescence and electrochemical properties of six polyarylated BODIPYs were investigated in solution. The presence of aryl substituents at all pyrrole carbons of BODIPY significantly alters the electronic properties of the dye. Compared to unsubstituted meso-aryl BODIPY, the polyarylated BODIPYs exhibited large bathochromic shifts in absorption and emission bands, large Stokes shifts, fluorescence quantum yields and singlet state lifetimes. These changes are attributed to the aryl groups which create steric crowding and induces nonplanarity in the BODIPY core altering the electronic properties of the dyes. The polyarylated BODIPYs were stable under redox conditions and exhibited reversible/quasi-reversible oxidation and reduction. (C) 2013 Elsevier B. V. All rights reserved.

引用

页码：93 / 97

页数：5

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