Tuning of intermolecular electron transfer reaction by modulating the microenvironment inside copolymer-surfactant supramolecular assemblies.

摘要: Photoinduced intermolecular electron transfer (ET) dynamics between various 7-aminocoumarin acceptors and N,N-dimethylaniline (DMAN) donor has been studied in copolymer−surfactant supramolecular assemblies prepared aqueous 1% P123 triblock copolymer micellar solution with varying concentration of surfactants (sodium dodecyl sulfate (SDS), cetyl trimethyl ammonium chloride (CTAC), triton-X-100 (TX100)). The aim the present study is to modulate reaction environment, especially degree hydration inside micelle by addition surfactants, which can ET through changes rates exergonicity. Within limited surfactant molar ratios (n) used study, fluorescence spectroscopy, dynamic light scattering (DLS), small-angle neutron (SANS) investigations indicate that retain their structure, although size gra...