Microenvironment Effect on the Location Distribution of Phenothiazine in Cetyltrimethylammonium Bromide/n-Pentanol/H2O W/O and Bi-continuous Microemulsions |
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Authors: | Yan Liu Rong Guo |
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Affiliation: | (1) School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, 225002, People’s Republic of China |
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Abstract: | In cetyltrimethylammonium/n-pentanol/H2O W/O (W/O = water in oil microemulsion) mixtures and bi-continuous microemulsions, phenothiazine (PTZ) molecules exist in the membrane phase of the dispersion either with the N atom or with the S atom pointed toward the polar head of cetyltrimethylammonium (CTAB). Cyclic voltammetry has been used to investigate the effects of the compositions and structures of the microemulsions, pH, and the salt on the location distribution of PTZ in the membrane phase of the dispersion in CTAB/n-C5H11OH/H2O W/O and bi-continuous microemulsions. The results show that the location distribution of PTZ in the membrane phase of the dispersion in microemulsions is mainly dependent on the hydrogen bond between PTZ and n-C5H11OH (or the counterion), and on the electrostatic attractive interaction between the N atom in PTZ and the polar head of CTAB. |
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Keywords: | Phenothiazine Microemulsion Cetyltrimethylammonium bromide Cyclic voltammetry Location distribution |
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