阴离子金属卟啉在多种有序介质存在下的室温磷光行为

摘要

Comparison of the anionic porphyrin′s RTP behaviors in different organized media was investigated.The results show that cationic surfactant CTAB or CPDB,non-ionic Brij-35 and BSA can improve RTP intensity of Pd-TCPP.When the concentration of CTAB is 2.0×10-5 mol/L,CPDB is 1.0×10-5 mol/L and Brij-35 is 2.0×10-4 mol/L,the highest phosphorescence is respectively obtained.Whereas,anionic surfactant SDS can not influence the RTP intensity of Pd-TCPP.It can be concluded that,RTP intensity can not be enhanced,even if the micro-environment system is ordered and rigid.However,the interaction between phosphor and medium determines the increase in phosphorescence intensity.%用室温磷光法（RTP）研究了阴离子卟啉在多种不同有序介质中的磷光行为.结果表明,阳离子表面活性剂十六烷基三甲基溴化铵（CTAB）或十六烷基溴化吡啶（CPDB）,非离子表面活性剂烷基聚氧乙烯（23）醚（Brij-35）,牛血清蛋白（BSA）均能增强阴离子meso-四-4-（羧基苯基）卟啉钯（Pd-TCPP）的室温磷光,并且在CTAB的浓度为2.0×10-5mol/L、CPDB的浓度为1.0×10-5mol/L,Brij-35浓度为2.0×10-4mol/L时,磷光强度达到最大;而阴离子表面活性剂十二烷基硫酸钠（SDS）不能增强其磷光强度.这是因为：即使微环境体系的有序性、刚性很强,如果磷光体与有序体系之间没有相互作用或作用很小,体系的RTP强度也不能增强;只有在有序介质与磷光体之间相互作用力较强的情况下,才能获得室温磷光.