Influence of intermolecular energy transfer on the photolysis of azide group in azidobenzenesulphonamides

Author

Krupka, O. ; Kolendo, A.

Author_Institution

Kiev Taras Shevchenko Nat. Univ., Ukraine

Volume

2

fYear

2005

fDate

12-17 Sept. 2005

Abstract

This paper presents the influence of intermolecular energy transfer on the photolysis of azide group in azidobenzenesulphonamides. Quantum-chemical calculations of 4-azidobenzenesulphonamides containing two nonconjugated π-electronic subsystems are carried out. Energies of the first singlet and triplet excited states are calculated for the azidobenzenesulphonamides and their electronic chromophores using semi-empirical MNDOd approximation. The calculated values are confirmed by spectral measurements. Influence of intramolecular triplet-triplet excitation energy transfer rate over quantum yield of the azide group photolysis is shown for the investigated compounds. All synthesized compounds are characterized by NMR and IR-spectroscopy.

Keywords

MNDO calculations; infrared spectra; molecular collisions; nuclear magnetic resonance; organic compounds; photolysis; quantum chemistry; triplet state; IR-spectroscopy; NMR-spectroscopy; azide group; azidobenzenesulphonamides; electronic chromophores; excited state; intermolecular energy transfer; nonconjugated π-electronic subsystems; photolysis; quantum yield; quantum-chemical calculations; semiempirical MNDOd approximation; singlet state; spectral measurements; triplet state; triplet-triplet excitation energy transfer; Energy exchange; Lamps; Nuclear magnetic resonance; Pharmaceuticals; Spectroscopy;

fLanguage

English

Publisher

ieee

Conference_Titel

Advanced Optoelectronics and Lasers, 2005. Proceedings of CAOL 2005. Second International Conference on

Print_ISBN

0-7803-9130-6

Type

conf

DOI

10.1109/CAOL.2005.1553916

Filename

1553916