含吩噻嗪氧化物的N-丙烯酰基吩噻嗪氧化物的合成及其荧光行为

含吩噻嗪氧化物的Ｎ 丙烯酰基吩噻嗪氧化物的合成及其荧光行为刘向前杜福胜李子臣李福绵（北京大学化学与分子工程学院北京１００８７１）关键词Ｎ 丙烯酰基吩噻嗪氧化物，荧光光谱，荧光结构自猝灭我们曾报道过含给电子性生色基团的丙烯酰类单体及其聚合物的荧光行为...

SYNTHESES OF N ACRYLOYLPHENOTHIAZINE OXIDES AND THEIR POLYMERS AND THE FLUORESCENCE BEHAVIOR THEREOF

N Acryloylphenothiazine oxides, namely, N acryloylphenothiazine 5 oxide (APTO) and N acryloylphenothiazine 5,5 dioxide (APTDO) were synthesized by oxidation of N acryloylphenothiazine (APT) using sodium perborate as an oxidant in acidic medium. Their polymers were obtained by radical polymerization using AIBN as an initiator. The fluorescence behavior of these monomers and their polymers has been explored. It has been found that the fluorescenceintensities of APO and APDO are much lower than those of their corresponding polymers at the same chromophore concentration in DMF. A Fluorescence Structural Self Quenching Effect (SSQE) has also been observed as we have reported previously. Furthermore, the difference of relative fluorescence intensity between P(APT) and APT was larger than that of P(APTO) and APTO. This indicates that the lone pair electrons of the sulfur atom in the phenothiazine moiety play an important role in SSQE. As regards to the fluorescence behavior of APTDO, on account of the absence of two lone pair electrons of sulfur atom in phenothiazine moiety, it does not display obvious SSQE.