Alkyl Chain Length Effects on the Photoionization of N-Alkylphenothiazines and Sulfonated Alkylphenothiazines in Anionic Alkyl Sulfate and Cationic Alkyltrimethylammonium Bromide Micelles

Article abstract of DOI:10.1021/j100173a071

The photoionization yields of N-alkylphenothiazines solubilized in either cationic or anionic micelles at 77 K were studied as a function of both alkyl and surfactant chain length.The results are compared to similar work on sulfonated N-alkylphenothiazines.The location of the phenothiazine moiety with respect to the micelle-water interface together with cation-water interactions is a major factor controlling the photoionization efficiency.The position of the N-alkylphenothiazine chromophore within a micelle can be altered by changing the alkyl chain length.The photoefficiency is also affected by the surface charge of the micelle.