Observation of the complex spectra for the supramolecular system involving silver nanoparticles‐biaryl Schiff bases containing the nitro group
作者:Chao‐Tun Cao、Shi‐Mao Cheng、Chenzhong Cao
DOI:10.1002/poc.4059
日期:2020.7
A series of biaryl Schiff bases containing the nitro groups, 4‐XArCH═NArNO2‐4′ (XBANO2‐4′) and 4‐NO2ArCH═NArY‐4′ (4‐NO2BAY), were synthesized. Also, the fish sperm DNA (fsDNA) and silver nanoparticles (AgNPs) solutions were prepared. By mixing these compounds with fsDNA or AgNPs solution and determining the ultraviolet absorption spectra of the mixture solutions, an interesting phenomenon was found:
一系列含有硝基基团,二芳基席夫碱4-XArCH═NArNO 2 -4'(XBANO 2 -4')和4-NO 2 ArCH═NArY-4'(4-NO 2 BAY),合成。此外,制备了鱼精DNA(fsDNA)和银纳米颗粒(AgNPs)溶液。通过这些化合物与或fsDNA的溶液的AgNPs混合以及确定所述混合溶液的紫外线吸收光谱,一个有趣的现象,发现:一种新的吸收峰λ max时,LIM出现在(XBANO 2 -4') -的AgNPs溶液,这是长于波长λ最大XBANO的2 -4'溶液。XBANO 2中的新吸收峰‐4')‐ AgNPs溶液是源自XBANO 2‐4 '与AgNPs之间电子转移的复杂光谱。而这种现象并没有在(4-NO观察到2 BAY)-AgNPs溶液,定量相关分析与所测量的光谱数据进行的,并且所述结果表明,该波数ν max时,LIM的的λ max时,LIM主要受激发态取代基常数的影响,而不