Co-existence of rod-like and globular micelles in the ctab—ctac—H2O system. Evidence from the fluorescence of solubilized pyrene
✍ Scribed by M. Almgren; J.-E. Löfroth; R. Rydholm
- Publisher
- Elsevier Science
- Year
- 1979
- Tongue
- English
- Weight
- 348 KB
- Volume
- 63
- Category
- Article
- ISSN
- 0009-2614
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✦ Synopsis
The coexistence of t\o rypes ofmicellar sfructures m concentmted aqueous soiutlons of mlxturec of CTAB and CTAC fceryltrimethylammonium bromide and chloride) has been confirmed by studres of the fluorcscencc deca?_ of solubilizsd pyrene.The fhmresccnce decay of pyrene in these mixtures is n double e\ponenthI The abort-lned component is ascrrbed to p> rene solubilized by rod-Ike micelies with Br-as princrpal counter-ion, thelong4ived to p> rene on globular Cl--rich micelIes_ P>rene is preferentislly soiubilized by the former. The co-e\is:ence is sugzcsted to be the consequence of a hisher preference for Br-as a counter-Ion in the case of rod-hke structures