Jump to main content
Jump to site search

Issue 31, 2010
Previous Article Next Article

Fluorescence and solvent-dependent phosphorescence studies of o-nitrobenzaldehyde: A combined experimental and theoretical investigation

Author affiliations

Abstract

The fluorescence and phosphorescence emission studies have been performed to understand the photochemistry of o-nitrobenzaldehyde in solution upon photoexcitation to the first excited singlet state (S1). The presence of an energy barrier in the S1-state hydrogen transfer potential energy surface is determined experimentally through the observed dual fluorescence emission, and the barrier height is estimated to be about 84–87 kcal mol−1 by gradually decreasing the excitation energy. The phosphorescence spectra of o-NBA in five different solvents are observed for the first time, providing direct experimental evidence on the existence of triplet manifold in the photoexcitation of o-NBA. Furthermore, the relative phosphorescence quantum yield is found to be solvent dependent. To get further insights into the dynamic process involved in the photochemistry of o-NBA, excited state calculations at the TD-B3LYP/6-311+G(d,p) level of theory with the PCM model are accomplished, which strongly support our experimental findings.

Graphical abstract: Fluorescence and solvent-dependent phosphorescence studies of o-nitrobenzaldehyde: A combined experimental and theoretical investigation

Back to tab navigation

Article information


Submitted
02 Feb 2010
Accepted
07 Apr 2010
First published
07 Jun 2010

Phys. Chem. Chem. Phys., 2010,12, 9067-9074
Article type
Paper

Fluorescence and solvent-dependent phosphorescence studies of o-nitrobenzaldehyde: A combined experimental and theoretical investigation

S. Cheng, P. Song, S. Yang, H. Yin and K. Han, Phys. Chem. Chem. Phys., 2010, 12, 9067
DOI: 10.1039/C002270E

Social activity

Search articles by author

Spotlight

Advertisements