Photoprocesses in cationic microemulsion systems

Solvation dynamics of coumarin 480 in neutral (TX-100), anionic (SDS), and cationic (CTAB) water-in-oil microemulsions

“…The size of the water pool (r w ) of the isooctane/CTAB/1-hexanol/water at w 0 ¼ 22:8 is 29.1 A A as reported by Das et al [19]. Whereas at w 0 ¼ 40:6, the size of the water pool (r w ) of a structurally and compositionally similar reverse micelle (dodecane/CTAB/1-hexanol/water) is 54 A A [20]. The slight decrease of solvation time with the increase in w 0 is due to the increase in size of the water pool of the microemulsion.…”

“…The previous work on SDS, CTAB, and TX-100 microemulsions suggests that like ternary microemulsions these are also spherical in nature and swell with increasing water content of the microemulsions [16][17][18][19][20]. Thus, only difference between these microemulsions and ternary systems is the presence of 1-hexanol at the interface in addition to the presence of headgroup, counterion, and Ôbound waterÕ.…”

“…Das et al [19] first simultaneously estimated the water pool size and the interfacial thickness of CTAB/isooctane/1-hexanol/ water microemulsion by combined use of chemical trapping and fluorescence quenching method. Atik and Thomas [20] determined the size of the water pool of structurally and compositionally similar w/o microemulsion (CTAB/dodecane/n-hexanol/water) by fluorescence quenching method.…”

Hydrated Electrons in a Quaternary Microemulsion System: A Pulse Radiolysis Study

“…In the inset of this figure the effect of water content in the system molecules starting from very small ones and going up to large molecules on the hydrated electron decay is depicted. In a microemulsion there are like proteins have been studied in such systems (9)(10)(11)(12)(13). These studies two sources of hydrated electrons; one is the scavenging of excess electrons show that enzymes incorporated in the aqueous core of the reverse micelles produced in the oil phase by water pools.…”

Photochemistry of a butylene linked porphyrin-quinone donor-acceptor system studied by time-resolved and steady-state EPR spectroscopy

“…The distribution of solute molecules in the reversed micelles can be described by a Poisson distribution [11,12]:…”