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Emission properties of a highly fluorescent pyrene dye in solution and in the liquid state

Paper ID Volume ID Publish Year Pages File Format Full-Text
29357 44158 2006 7 PDF Available
Title
Emission properties of a highly fluorescent pyrene dye in solution and in the liquid state
Abstract

Three novel pyrene dyes substituted by four oligo-ether side chains of varying size have been synthesized. Surprisingly, two of these fluorescent derivatives are liquid at room temperature. The photophysical study of one of these dyes, which is miscible in common organic solvents such as hexane, chloroform and toluene, but also in water, has been performed. It has been shown that this pyrene derivative exhibits a high quantum yield of fluorescence, Φf ∼ 1, and has a high extinction coefficient, i.e. ɛ = 100,000 mol−1 cm−1 l, in diluted n-hexane solution. In water, aggregation takes place and the fluorescence quantum yield decreases considerably. Moreover, the spectroscopic properties of the aggregates formed in water are very close to those of the neat liquid. Therefore, the basic structure of the aggregates formed in water and in the pure liquid are expected to be similar.

Keywords
Liquid; Supramolecular chemistry; Aggregation; Fluorescence; Pyrene
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Emission properties of a highly fluorescent pyrene dye in solution and in the liquid state
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 178, Issues 2–3, 20 March 2006, Pages 251–257
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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