CTMAB对HPTS荧光光谱的影响及β-CD对其包结作用的研究  

Effects of CTMAB on the Fluorescence Spectrum of HPTS and the Inclusion Complexation of β-CD

作　　者：李隆弟[1] 谭玉清[1] 

机构地区：[1]清华大学化学系,100084

出　　处：《高等学校化学学报》1991年第4期466-468,共3页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金

摘　　要：8-羟基-1,3,6三磺酸芘的钠盐(简称HPTS),亦称HOPSA。我们在研究它在各类表面活性剂和环糊精等溶液中的发光特性时发现,它与阳离子表面活性剂溴化十六烷基三甲基铵(CTMAB)间有明显的相互作用。随CTMAB浓度增加,HPTS荧光光谱512nm处出现峰由猝灭到回升,并伴随着435nm附近新峰的形成,该荧光峰红移并稳定在530nm处。而当在HPTS-CTMAB体系中引入β-CD时,出现与上述变化相对应的逆变化过程。本文对此现象进行了讨论。The fluorescence spectrum of 8-hydroxy-1 , 3, 6-pyrenetrisulfonate(HPTS or HOPSA) in the presence of CTMAB or/and β-CD were studied. The results show that the fluorescence spectrum of HPTS is largely changed as the cetyl trimethyl ammonium bromide (CTMAB) gradually is increased. When β-CD is gradually added into the system of HPTS-CTMAB, however, the changes described above were inverted. These changes were discussed based on the comparisons of fluorescence spectra for HPTS in various medium solutions, 1H NMR spectra of HPTS or/and CTMAB solutions and the inclusion complexation between CTMAB and β-CD. We consider that the main reason for above effects is relative to the electric interaction between the anion HPTS and cations of CTMAB and the properties of the micro-environment round HOPSA molecule.

关 键 词：HPTS荧光光谱 CTMAB β-CD包结作用 

分 类 号：O657.3[理学—分析化学]