Jj. Chung et al., AN INVESTIGATION OF THE ENVIRONMENT OF SOME AROMATIC ALCOHOL SOLUBILIZED AQUEOUS IONIC MICELLAR SOLUTIONS BY PROTON MAGNETIC-RESONANCE SPECTROSCOPY, Bulletin of the Korean Chemical Society, 15(3), 1994, pp. 198-204
Chemical shifts in aqueous sodium dodecylsulfate(SDS) micellar solutio
n solublizing phenol, catechol, resorcinol, hydro-quinone have been me
asured to investigate solubilization properties. Proton nuclear magnet
ic resonance frequencies of solubilizates as well as those of the alph
a-methylene, middle methylene and terminal methyl of SDS shift linearl
y as a function of solubilizate concentration. From the plots of obser
ved chemical shift (nu) vs solubilizate concentration, slope (a) and s
olubilizate free chemical shift(nu(0)) are obtained. They are very inf
ormative to solubilization site of the systems. Catechol and phenol so
lubilized SDS and catechol solubilized dodecylpyridinium chloride(DPC)
, dodecyltrimethylammonium bromide(DTAB) systems are studied using the
same method to compare head group effect and middle methylene proton
signal splitting. It is proposed that phenol and catechol are inserted
into micellar interior and the number of methylenes assigned to the h
igher field peaks is 5.0+/-0.5.