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Interaction of the excited singlet state of disubstituted anthraquinones with aliphatic and aromatic amines: a fluorescence quenching study

✍ Scribed by Hirendra N. Ghosh; Haridas Pal; Dipak K. Palit; Tulsi Mukherjee; Jai P. Mittal


Book ID
108043536
Publisher
Elsevier Science
Year
1993
Tongue
English
Weight
519 KB
Volume
73
Category
Article
ISSN
1010-6030

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The dynamic nature of the quenching of the fluorescence of 1,4\_amino-and hydroxy-substituted 9, IO-anthraquinone, with benzene, alkylbenzenes and other aryl hydrocarbons as quenchers, indicates formation of exciplexes, where charge transfer (CT) occurs from the S, (quencher) to the S, (fluoropliore

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## Dedicated to Prof. Andre¬ M. Braun on occasion of his 60th birthday The reaction of the ground and excited states of lumichrome ( 7,8-dimethylalloxazine 7,8-dimethylbenzo[g]pteridine-2,4(1H,3H)-dione) with aliphatic and aromatic amines was investigated in MeOH. In the presence of aliphatic amin

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While CW interacts with aromatic amines such as dimethylaniline in the ground state, C,,, does not. Fluorescence spectroscopic studies, including lifetime measurements, show the formation of exciplexes of both Ca and Cm with arpmatic amines in nonaromatic solvents such as methylcyclohexane. Exciplex