The two-photon spectrum of liquid pyridine by thermal lensing techniques

Year: 1987

Authors: Salvi P.R., Foggi P., Bini R., Castellucci E.

Autors Affiliation: Laboratorio di Spettroscopia Molecolare, Dipartimento di Chimica, Università di Firenze, via G. Capponi 9, 50121 Florence, Italy

Abstract: Thermal lensing is exploited to investigate the electronic properties of pyridine. The two-photon spectrum and polarization ratio of liquid pyridine has been measured from 2900 to 2000 Å. Absorptions corresponding to the two lowest pp* states, of benzene parentage, and to the second excited np* state have been assigned. The latter, of A2 symmetry, borrows two-photon intensity from A1 states through vibronic coupling induced by a2 vibrations. Calculations of allowed contributions to the two-photon cross sections for the lowest four excited levels support the assignment.

Journal/Review: CHEMICAL PHYSICS LETTERS

Volume: 141 (5)      Pages from: 417  to: 422

More Information: Consiglio Nazionale delle Ricerche, CNR. Minister0. – * This work was supported by the Italian Minister0 della Pub-blica lstruzione and Consiglio Nazionale delle Ricerche.
KeyWords: pyridine
DOI: 10.1016/0009-2614(87)85052-2

Citations: 11
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