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Synthesis and photophysical properties of 1,4-bis(4,5-diarylimidazol) benzene dyes

Paper ID Volume ID Publish Year Pages File Format Full-Text
29272 44143 2007 5 PDF Available
Title
Synthesis and photophysical properties of 1,4-bis(4,5-diarylimidazol) benzene dyes
Abstract

A class of π-conjugated 1,4-bis(4,5-diarylimidazol)benzene dyes (1–5) are synthesized, and all dyes exhibit strong fluorescence in solution (ϕf = 0.96–0.45, in DMSO). It is found that both absorption and fluorescence of dyes are influenced by molecular structures and electronic properties of substitute groups, but little influenced by the polarity of solvents and pH value. Besides, two-photon properties of dyes are also investigated. The largest two-photon absorption cross-section (σ = 98 GM) for dye 4 is obtained with 700 nm in DMSO, and two-photon fluorescence emission is also observed with 740 nm excitation in solution.

Keywords
1,4-Bis(4,5-diarylimidazol)benzenes; Fluorescence; Two-photon absorption; Two-photon fluorescence
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Synthesis and photophysical properties of 1,4-bis(4,5-diarylimidazol) benzene dyes
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 189, Issues 2–3, 25 June 2007, Pages 253–257
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
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Price was $35.95
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