基于香豆素的银离子化学传感器的合成与性能研究  

The synthesis and properties of a coumarin based chemosensor for silver ion

作　　者：尹凯[1] 余柱 骆早利 李焰[1] 任君[1] 

机构地区：[1]湖北大学化学化工学院,湖北武汉430062

出　　处：《湖北大学学报（自然科学版）》2015年第2期154-158,共5页Journal of Hubei University：Natural Science

基　　金：湖北省自然科学基金(2013CFB005)资助

摘　　要：设计、合成了一种以香豆素为发色基团、以含氮、硫原子的冠醚为识别基团的化学传感器S1.通过UV-vis吸收光谱研究了S1的选择性识别能力,结果表明:在S1的Et OH-H2O(体积分数,1∶1)溶液中加入银离子,不仅最大吸收波长有较明显的蓝移而且其吸光强度也有所降低,而加入其他离子如:Mn2+、Co2+、Ni2+、Cu2+、Al3+、Ca2+、Cd2+、Ba2+、Hg2+、Sr2+、K+、Mg2+、Li+、Fe3+、Pb2+和Zn2+均没有明显变化,传感器S1对银离子具有很好的选择性识别能力.A new chemosensor S1 was designed and synthesized,which based on coumarine as the chromphore and dithia-dioxa-monoaza crown ether moiety as the recognition site. The sensing properties of S1 were investigated by UV-vis. Upon the addition of silver ion to the EtOH-water solution（1∶1,V/V）containing S1,the blue-shift of the maximum absorption wavelength and the decrease of molar absorption coefficient were observed. However,when the other ions were added ,such as Mn^2＋,Co^2＋,Ni^2＋,Cu^2＋,Al^3＋,Ca^2＋,Cd^2＋,Cr^3＋,Ba^2＋, Hg^2＋,Sr^2＋,K^＋,Mg^2＋,Li^＋,Fe^3＋,Pb^2＋ and Zn^2＋,the maximum absorption wavelength and molar absorption coefficient did not show any change. These results showed that S1 had a good selectively sensing ability for Ag^＋.

关 键 词：香豆素 银离子 化学传感器 

分 类 号：O621.3[理学—有机化学]