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THE EFFECT OF 9‐ETHYLADENINE ON THE PHOTODIMERIZATION OF 1‐CYCLOHEXYLTHYMINE
Author(s) -
Nakata Toshio,
Yamato Masayuki,
Tasumi Mitsuo,
Miyazawa Tatsuo
Publication year - 1975
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.1751-1097.1975.tb08819.x
Subject(s) - excimer , excited state , quenching (fluorescence) , photochemistry , acetonitrile , singlet state , chemistry , ground state , triplet state , chloroform , fluorescence , molecule , organic chemistry , atomic physics , physics , quantum mechanics
— The photodimerization of 1‐cyclohexylthymine (l‐CT).and the effect of adding 9‐ethyladenine (9‐EA) on this reaction were studied in chloroform and/or acetonitrile solutions. The photodimerization of 1‐CT is shown to occur through an excited triplet state. 9‐EA works as an inhibitor against this reaction by quenching the excited singlet state of 1‐CT. It is suggested that a singlet exciplex made up from the excited state 1‐CT and the ground state 9‐EA by hydrogen‐bonding may play an important role in the quenching process.