合成了两种新型甲基丙烯酸酯类化合物:4-甲基丙烯酰氧基-4’-硝基二苯乙烯(NS)和4-甲基丙烯酰氧己氧基-4’-硝基二苯乙烯(HNS),通过红外光谱、核磁、高效液相色谱、紫外吸收光谱等对化合物结构进行了表征。研究了两化合物的荧光发射光谱, 考察了浓度、溶剂极性等对化合物荧光发射光谱的影响。结果表明,化合物NS、HNS均存在浓度自猝灭效应,其荧光最大发射波长均随着溶剂极性增大而红移;且HNS由于供电子己氧基的引入在分子内形成了推-拉电子结构,使得其荧光最大发射波长较NS红移了72nm,化合物在DMF溶液中产生的荧光由黄光转变为橙红色光。

Two new stilbene derivatives,4-methacryloxyl-4’-nitrostilbene (NS) and 4-(6-methacryloxyl)-hexyloxy-4’-nitrostilbene (HNS),were synthesized and characterized by FTIR,UV-Vis,HPLC and 1H NMR.The influence of structure,concentration and solvent polarity on the fluorescence of the two compounds was investigated in the present paper.Results showed that both NS and HNS have concentration quenching effect and the fluorescence spectrum exhibited a red shift with the increase in the polarity of solvents.Moreover,the donor-acceptor structure is formed in HNS due to the introduction of donor group hexyloxy,which leads to a 72 nm red shift of the maximum wavelength of fluorescence compared with NS,and the fluorescencE_generated from such composite in DMF solution would change from yellow to orange.