氮苄叉苯胺-银纳米超分子体系的紫外光谱研究  

Study on the UV spectra of supermolecular system involving benzylideneaniline-silver nanoparticles

作　　者：曹朝暾[1] 程时茂 曹晨忠[1] CAO Chao-Tun;CHENG Shi-Mao;CAO Chen-Zhong(Key Laboratory of Theoretical Organic Chemistry and Function Molecule,Ministry of Education,Hunan Provincial University Key Laboratory of QSAR/QSPR,School of Chemistry and Chemical Engineering,Hunan University of Science and Technology,Xiangtan 411201,China)

机构地区：[1]湖南科技大学化学化工学院理论有机化学与功能分子教育部重点实验室分子构效关系湖南省普通高校重点实验室

出　　处：《化学研究与应用》2019年第9期1635-1642,共8页Chemical Research and Application

基　　金：国家自然科学基金项目(21672058)资助

摘　　要：合成了38个不含OH,NH2和SH基团的4,4’-二取代氮苄叉苯胺衍生物(p-XBAY-p)以及银纳米粒子,分别测定了p-XBAY-p、银纳米粒子(AgNPs)以及(p-XBAY-p)-AgNPs超分子体系的紫外吸收光谱,研究了取代基效应对该超分子体系紫外光谱的影响。结果表明:化合物的紫外吸收波长会随着AgNPs的加入而发生不同程度的偏移,并存在偏移极限,其偏移程度与取代基X和Y有关;通过纳米粒度电位仪(Nano ZS90,Malvern)测定,超分子体系中银纳米粒子体积变大;用Hammett参数σ,激发态取代基参数σcc^ex对超分子体系紫外吸收光谱的偏移值ΔνWSL(波数,cm-1)进行定量相关,得到一个三参数方程。所得方程表明,本文(p-XBAY-p)-AgNPs超分子体系紫外光谱的变化规律与含羟基二芳基席夫碱-银纳米超分子体系紫外光谱的变化规律有较大差异。Thirty-eight samples of 4,4’-disubstituted N-benzylidenebenzenamine derivatives(p-XBAY-p)excluding OH,NH 2 and SH groups,and silver nanocluparticles(AgNPs)were synthesized.The UV absorption spectra of p-XBAY-p solution,AgNPs solution and(p-XBAY-p)-AgNPs supermolecular system were measured.The effect of substituents on the UV absorption spectra of the supermolecular system were quantified.The results show:(1)the UV absorption wavelength of p-XBAY-p solution shift as the addition of AgNPs solution,and the wavelength shift(λWSL)exists limitation between p-XBAY-p and(p-XBAY-p)-AgNPs supermolecular system,which are influenced by the substituents X and Y;(2)the size of AgNPs is larger in(p-XBAY-p)-AgNPs solution than that in AgNPs solution by means of the determination of Malvern Zetasizer Nano ZS90;(3)the wavenumberΔνWSL(cm-1)of theλWSL for the supermolecular systems can be quantified by employing a three-p arameters equation with Hammett parameterσand the excited-state parameterσex cc of substituents X and Y;(4)the changing regularity of UV absorption spectra of(p-XBAY-p)-AgNPs is different from that of the supermolecular system involving AgNPs with bi-aryl Schiff base containing hydroxyl.

关 键 词：氮苄叉苯胺 银纳米粒子 超分子体系 紫外光谱 取代基效应 

分 类 号：O641[理学—物理化学]