Ultrafast Intramolecular Proton Transfer in the Condensed Phase Studied by Resonance Raman and Femtosecond Spectroscopy

Elsaesser, T.; Pfeiffer, M.; Lenz, K.; Lau, A.; Chudoba, C.; Lutgen, S.; Jentzsch, T.; Riedle, Eberhard und Woerner, M. (1996): Ultrafast Intramolecular Proton Transfer in the Condensed Phase Studied by Resonance Raman and Femtosecond Spectroscopy. Ultrafast Processes in Spectroscopy, Trieste (Italy), October 30 -November 3, 1995. Svelto, O.; Silvestri, Sandro de und Denardo, G. (Hrsg.): In: Ultrafast Processes in Spectroscopy, Berlin; Heidelberg: Springer. S. 119-122

Abstract

Intramolecular proton transfer after electronic excitation of aromatic molecules proceeds frequently on ultrafast time scales. Femtosecond studies of the transient electronic spectra occurring with and after the formation of a new molecular geometry provide insight into the reaction dynamics, whereas resonance Raman experiments give information on the vibrational modes involved in the initial phase of excited state reactions and — thus — on the microscopic mechanisms of the structural changes. In this paper, we report new results on proton transfer reactions and nonequilibrium vibrational excitations of 2-(2’-hydroxy-5’- methylphenyl)benzotriazole (trade name: TINUVIN P, TIN), an ultraviolet stabilizer of polymers.

• Dokumententyp: Konferenzbeitrag (Paper)
• Fakultät: Physik
• Themengebiete: 500 Naturwissenschaften und Mathematik > 530 Physik
• Ort: Berlin; Heidelberg
• Sprache: Englisch