Title

Fluorescence emission of disperse red 1 in solution at room temperature

Authors

Authors

C. Toro; A. Thibert; L. De Boni; A. E. Masunov;F. E. Hernandez

Comments

Authors: contact us about adding a copy of your work at STARS@ucf.edu

Abbreviated Journal Title

J. Phys. Chem. B

Keywords

AZO COMPOUNDS; PHOTOISOMERIZATION; AZOBENZENE; ISOMERIZATION; DERIVATIVES; ABSORPTION; MOLECULES; MECHANISM; DYNAMICS; SPECTRA; Chemistry, Physical

Abstract

In this article, we report the fluorescence emission of Disperse Red I 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 I 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.

Journal Title

Journal of Physical Chemistry B

Volume

112

Issue/Number

3

Publication Date

1-1-2008

Document Type

Article

Language

English

First Page

929

Last Page

937

WOS Identifier

WOS:000252484200038

ISSN

1520-6106

Share

COinS