一种新的Bola型表面活性剂及其临界胶束浓度的不同方法测定  

A novel Bola amphiphile surfactant and its critical micelle contrentration determined by diferent methods

作　　者：田冬梅[1] 王洁莹[1] 袁悦[2] 胡贝贝[2] 邱钰婷 林新[1] 

机构地区：[1]沈阳师范大学化学化工学院,沈阳110034 [2]沈阳药科大学药学院,沈阳110016

出　　处：《沈阳师范大学学报（自然科学版）》2016年第4期397-401,共5页Journal of Shenyang Normal University:Natural Science Edition

基　　金：辽宁省科技厅社会发展公关计划资助项目(2010230002)

摘　　要：成功合成了一种以苯丙氨酸为极性头基的新的Bola型表面活性剂——1,12-二苯丙氨酸十二烷(DADPhe),并依次用表面张力法、电导率法和芘荧光探针法测定了1,12-二苯丙氨酸十二烷的临界胶束浓度(CMC),测定结果分别为0.04 mmol·L-1、0.03 mmol·L-1和0.029 8mmol·L-1。实验结果表明,此3种方法的测定值略有不同,其中电导率法和芘荧光探针法的数值相近,而表面张力法所得数值与其他2种方法有微小差异,推测与环境因素有关。进一步分析比较3种实验结果的差异性发现,芘荧光探针法测定的结果更为准确适宜。A novel bola amphiphile 1,12-phenylalanine dodecanediamine（DADPhe）,employed phenylalanine as the pole head was synthesized.The CMC of DADPhe was determined by surface tension method, conductivity and pyrene fluorescence spectroscopy with the results0.04mmol·L^-1,0.03mmol·L^-1and 0.029 8mmol·L^-1respectively.The experimental results showed that conductivity and pyrene fluorescence spectroscopy have a similar value,and the value of surface tension method,however,has a minor different from them.It is possibly because of the environmental factors.The results with comparative analyses showed that the pyrene fluorescence spectroscopy method is the most accurate and suitable.

关 键 词：BOLA型表面活性剂 临界胶束浓度(CMC) 表面张力法 电导率法 芘荧光探针法 

分 类 号：O65[理学—分析化学]