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测定了均相水溶液及CTAC胶束体系中酪氨酸、色氨酸与几种磺化酞菁激发单重态及三重态间的电子转移速率,表明CTAC显著促进了电子转移速率;酞菁单重态与氨基酸作用时是作为电子给体,而酞菁三重态与氨基酸作用时是作为电子受体,亦即形成了不同的反应中间体;定量分析表明,酞菁两种激发态(即单重态和三重态)分别与底物作用的这2种过程是相互竞争的,其影响因素不仅包括单重态和三重态寿命,还包括两个过程的电子转移速率及底物浓度;对ZnTSPC,单重态与氨基酸间作用在总的电子转移中起主导地位。
The electron transfer rates between tyrosine, tryptophan and several sulfonated phthalocyanines in both homogeneous and aqueous CTAC micellar systems were determined, indicating that CTAC significantly promoted the electron transfer rate. Phthalocyanine mono Heavy state and amino acid act as electron donors, while the phthalocyanine triplet state and amino acid act as electron acceptor, which formed a different reaction intermediates; quantitative analysis showed that phthalocyanine two excited states (ie, single Heavy and triplet states) compete with each other for the two substrate substrates. The influencing factors include not only the singlet and triplet lifetimes, but also the electron transfer rates and substrate concentrations for both processes. For ZnTSPC , The interaction between the singlet and amino acids plays a dominant role in the total electron transfer.