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Article Dans Une Revue Journal of Chemical Physics Année : 2002

Electronic relaxation of aniline in argon matrix: A site selective laser spectroscopy

Résumé

Absorption (S1←S0), fluorescence (S1→S0) and phosphorescence (T1→S0) spectra of aniline isolated in argon matrices are presented and analyzed. Upon selective laser excitation, two families of sites are characterized by electronic spectroscopy and excited state dynamics. A strong electron/phonon coupling is observed in the S1↔S0 transition due to a geometry change of the molecule. Phosphorescence spectra exhibit different vibronic intensity distribution for both sites; a1 in plane and b1 out-of-plane modes are observed. A direct estimation of the inversion splitting in the ground state (46 cm−1) is obtained from the presence of an intense doublet assigned to 3A1(0+)→1A1(0+,0−) vibronic transitions.
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hal-01826444 , version 1 (29-06-2018)

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Christelle Gée, A. Cuisset, L. Divay, Claudine Crépin. Electronic relaxation of aniline in argon matrix: A site selective laser spectroscopy. Journal of Chemical Physics, 2002, 116 (12), pp.4993-5001. ⟨10.1063/1.1451055⟩. ⟨hal-01826444⟩
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