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Fluorescence Quenching of Anthracene by N,N-Diethylaniline and Phenothiazine in CTAB/n-C5H11OH/H2O Microemulsion

Photoinduced electron transfer reactions of anthracene with N,N-diethylaniline (DEA) and phenothiazine (PTZ) occurred in the membrane phase of the CTAB (hexadecyltrimethylammonium bromide)/n-C5H11OH (1-pentanol)/H2O micro-emulsion. DEA and PTZ exist in the membrane phase of the microemulsion because the presence of vitamin-C (Vc) can change the quenching constant. The change of the quenching constant for the DEA–anthracene system with the presence of Vc is more obvious than that for the PTZ–anthracene system. Thus, the DEA molecules are much closer to the polar head of the microemulsion than PTZ. Compared with DEA, the distribution of PTZ in the microemulsion tends to follow Poisson statistics.