Bulletin of the Chemical Society of Japan
Online ISSN : 1348-0634
Print ISSN : 0009-2673
ISSN-L : 0009-2673
Coenzyme Models. III. Enhanced Charge Transfer Interaction between the Oxidized and Reduced Forms of Nicotinamide in Micellar and Polymeric Systems. NAD Coenzyme Model
Seiji ShinkaiKiyoshi TamakiToyoki Kunitake
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1975 Volume 48 Issue 6 Pages 1918-1921

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Abstract

The micelle of 1-lauryl-3-carbamoylpyridinium bromide(NLaN) and poly-1-(p-vinylbenzyl)-3-carbamoylpyridinium chloride (PVCG) were shown to form charge transfer complexes with dihydronicotinamides and several aromatic compounds in aqueous media. A broad charge transfer absorption at longer wavelengths was easily detected, and the association constant of 1 : 1 complexes which was estimated from the CT band was enhanced by 6.2–220 times in the NLaN micelle and by 14–66 times in the polymeric system, compared with non-micellar, monomeric system. The enhancement of the interaction between NLaN and its reduced from (NLaNH) was similar in the CTAB micelle and in a nonionic micelle. The increased electron-acceptabilities of the pyridinium group in micellar and polymeric systems were discussed in reference to NAD coenzyme.

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