自然科学版
陕西师范大学学报(自然科学版)
化学与材料科学
阴离子金属卟啉在多种有序介质存在下的室温磷光行为
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王英特1,王向伟1,王维1,蔡雪梅2,张勇1*
(1 山西大学 化学化工学院, 山西 太原 030006; 2 晋中学院 化学化工学院, 山西 榆次 030600)
王英特,女,讲师,博士,主要从事分析化学教学与研究工作. Email: yingtew@sxu.edu.cn.
摘要:
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2.0×10-5 mol/L、CPDB的浓度为1.0×10-5 mol/L,Brij35浓度为2.0×10-4 mol/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.
关键词:
金属卟啉; 室温磷光; 有序介质
收稿日期:
2010-11-30
中图分类号:
O657.3
文献标识码:
A
文章编号:
16724291(2011)05004605
基金项目:
国家自然科学基金资助项目(20475035); 山西省高等学校科技项目(20091036).
Doi:
Study on room temperature phosphorescence of the anionic mentalporphyrin in different microenviroment
WANG Yingte1, WANG Xiangwei1, WANG Wei1, CAI Xuemei2, ZHANG Yong1*
(1 School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, Shanxi, China; 2 School of Chemistry and Chemical Engineering, Jinzhong University, Yuci 030600, Shanxi, China)
Abstract:
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.
KeyWords:
metalporphyrin; room temperature thosphorescence; orgnized microenviroment