Picosecond vibrational relaxation in the excited-state proton-transfer of 2-(3′-hydroxy-2′-naphthyl)benzimidazole
1994; Elsevier BV; Volume: 217; Issue: 5-6 Linguagem: Inglês
10.1016/0009-2614(93)e1426-h
ISSN1873-4448
AutoresAbderrazzak Douhal, F. Amat‐Guerri, A. Ulises Acuña, Keitaro Yoshihara,
Tópico(s)Radical Photochemical Reactions
ResumoThe fluorescence of 2-(3′-hydroxy-2′-naphthyl) benzimidazole in solution shows two bands at ≈ 400 and 600 nm, respectively assigned to the open-enol form bound to the solvent, and to the phototautomer produced from the closed-enol form. Both enol species coexist in the ground state. A fluorescence risetime of 16 ps has been attributed to the vibrational cooling-process of the excited phototautomer.
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