Title of article
Time-resolved infrared study of ground-state phototautomer formed in the excited-state proton transfer of 7-hydroxyquinoline in methanol
Author/Authors
Tokumura، نويسنده , , Kunihiro and Natsume، نويسنده , , Miyoko and Nakagawa، نويسنده , , Takako and Hashimoto، نويسنده , , Mamoru and Yuzawa، نويسنده , , Tetsuro and Hamaguchi، نويسنده , , Hiro-o and Itoh، نويسنده , , Michiya، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 1997
Pages
7
From page
320
To page
326
Abstract
Time-resolved infrared absorption spectra of 7-hydroxyquinoline (7-HQ) in methanol were measured to investigate the relaxation processes following S1 → S′1 proton transfer tautomerization. Deuterium and nitrogen isotope effects were observed for the transient infrared spectra of 7-HQ-14N and -15N in MeOD and MeOH. The 1644 (1628) cm−1 band in MeOH (MeOD) is ascribed to the H(D)-bonded C = O stretching of the phototautomer in the ground state (St́0). Transient absorption decay exhibits a remarkable deuterium isotope effect. It is thus demonstrated that the ground-state reverse proton transfer of S′0 is responsible for the observed transient decay.
Journal title
Chemical Physics Letters
Serial Year
1997
Journal title
Chemical Physics Letters
Record number
1781063
Link To Document