Effect of substituents on the UV spectra of supermolecular system: Silver nanoparticles with bi-aryl Schiff bases containing hydroxyl
作者:Chao-Tun Cao、Shimao Cheng、Jingyuan Zhang、Chenzhong Cao
DOI:10.1002/poc.3910
日期:2019.3
Effect of substituents on the ultraviolet (UV) spectra of supermolecular system involving silver nanoparticles (AgNPs) and Schiff bases was investigated. AgNPs and 49 samples of model compounds (MC), bi‐aryl Schiff bases containing hydroxyl (XBAY, involving 4‐OHArCHNArY, 2‐OHArCHNArY, XArCHNAr‐4′‐OH, and XArCHNAr‐2′‐OH), were synthesized. The size of AgNPs was characterized by transmission electron
研究了取代基对涉及银纳米颗粒(AgNPs)和席夫碱的超分子体系的紫外(UV)光谱的影响。AgNP和49种模型化合物(MC),含羟基的双芳基席夫碱(XBAY,涉及4-OHArCHNArY,2-OHArCHNArY,XArCHNAr-4'-OH和XArCHNAr-2' -OH),是合成的。用透射电子显微镜(TEM)表征AgNPs的大小,并分别测量AgNPs,XBAYs和MC-AgNPs混合溶液的紫外吸收光谱。结果表明:(1)由于MC分子在AgNPs表面的分布,MC-AgNPs溶液中AgNPs的尺寸大于AgNPs溶液中的AgNPs的尺寸;(2)XBAYs的紫外线吸收波长随着AgNPs的作用而变化,并且它们的波长偏移在XBAY和MC‐AgNPs溶液之间存在局限性;WSL)受取代基X和Y和羟基OH的位置的影响。波数Δν WSL λ的WSL可以通过采用激发态取代基常数被量化的取代基的哈米特和常数σX和Y与4-OH,4'-