【摘要】 利用荧光能量转移设计高灵敏苦味酸光极膜王柯敏，曾恚恚，俞汝勤（湖南大学化学化工系，长沙，４１００８２）关键词荧光能量转移，光极，苦味酸基于稠环芳烃荧光熄灭的苦味酸光极膜［１ａ，２］在选择性方面优于传统苦味酸根离子电极，较适于实际应用，但在检测低浓度苦...更多还原

【Abstract】 A new type of picric acid optrode membrane is described based on fluorescence energy transfer from fluoranthene(FA,donor)to fluorescein octadecyl ester(FODE,acceptor).When FA and FODE are incorporated in plasticized poly(vinyl chloride)polymer membrane,the two fluorophore system is strongly quenched,with a 3-fold increase in the Stern-Volmer quenching constant as compared to the quenching of FA or FODE alone.This phenomenon is mainly due to that donor-acceptor pair fluorescence is quenched with a much big efficiency by picric acid.The new optrode membrane offers a more sensitive method for the determination of picric acid over the existing picric acid sensors.更多还原