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PICOSECOND FLUORESCENCE KINETICS OF N‐ALL‐ TRANS ‐RETINYLIDENE‐AT‐BUTYLAMINE
Author(s) -
Everaert J.,
Rentzepis P. M.
Publication year - 1982
Publication title -
photochemistry and photobiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.818
H-Index - 131
eISSN - 1751-1097
pISSN - 0031-8655
DOI - 10.1111/j.1751-1097.1982.tb04414.x
Subject(s) - picosecond , photochemistry , excited state , fluorescence , chemistry , quenching (fluorescence) , singlet state , streak camera , materials science , laser , atomic physics , optics , physics
Fluorescence lifetimes are reported for N‐all‐ trans ‐retinylidene‐ n ‐butylamine in hexane. Picosecond resolution was obtained by excitation with a single 355‐nm pulse, 25 ps FWHM, from a passive mode‐locked YAG‐laser and detection with a high speed streak camera. The lifetime dependence on temperature and the spectral characteristics support a vibrational‐torsional deactivation model of the singlet excited state of two different conformers. Additional data in decalin are consistent with this model, while the quenching in alcoholic solutions may be supported by the solvent reorientation.