| Numéro |
J. Phys. Colloques
Volume 48, Numéro C7, Décembre 1987
1st International Laser M2P Conference
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| Page(s) | C7-741 - C7-742 | |
| DOI | https://doi.org/10.1051/jphyscol:19877182 | |
J. Phys. Colloques 48 (1987) C7-741-C7-742
DOI: 10.1051/jphyscol:19877182
PULSED MULTICHANNEL RAMAN SPECTROMETRY OF TRANSIENT SPECIES : STRUCTURAL STUDY OF THE TRIPLET STATE OF DIAMINES
G. BUNTINX1, M. BRIDOUX1, A. DEFFONTAINE1 and O. POIZAT21 LASIR, CNRS LP. 2641, Université des Siences et Techniques de Lille-Flandres-Artois, Bâtiment C.5, F-59655 Villeneuve-d'Ascq Cedex, France
2 LASIR, CNRS LP 2631, 2, Rue Henri Dunant, F-94320 Thiais, France
Abstract
Resonance Raman spectroscopy with pulsed Laser excitation and multichannel optical detection is a very sensitive tool to detect and study transient species in solution. We have used the pump-then-probe technique to analyse by time resolved resonance Raman spectroscopy the first excited triplet state of various derivatives of the N,N,N',N'tetramethyl- p-phenylenediamine (TMPD) - (CH3)2N-C6H4-N(CH3)2, (CD3)2N-C6H4-N(CD3) 2, (CH3)2N-C6D4-N(CH3)2, and (CD3)2N-C6D4-N(CD3)2 - and of the N,N,N',N'tetraethyl-p-phenylenediamine (TEPD) - (C2H5)2N-C6H4-N(C2H5)2 and (C2H5)2N-C6D4-N(C2H5)2. All compounds have been synthetized in the laboratory. The lowest-energy triplet state is populated via intersystem crossing from the first singlet excited state after laser excitation.