Title

Fluorescence Emission Of Disperse Red 1 In Solution At Room Temperature

Abstract

In this article, we report the fluorescence emission of Disperse Red 1 in solution at room temperature and pumping at 532 nm with a 25 mW diode laser. We have measured its fluorescence quantum yield in methanol, ethylene glycol, glycerol, and phenol obtaining values as high as 10-3 in the aliphatic alcohols. The excitation spectra of Disperse Red 1 in all four solvents as well as its excitation anisotropy in glycerol are presented. Applying a Gaussian decomposition method to the absorption spectra along with the support from the excitation spectra, the positions of the different transitions in this pseudo-stilbene azobenzene dye were determined. Solvatochromic and isomerization constraint effects are discussed. Calculations using density functional theory at TD-B3LYP/6-31G*//HF/6-31G* level were performed to interpret the experimental observations. © 2008 American Chemical Society.

Publication Date

1-24-2008

Publication Title

Journal of Physical Chemistry B

Volume

112

Issue

3

Number of Pages

929-937

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1021/jp076026v

Socpus ID

38949086487 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/38949086487

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