【摘要】 合成并表征了化合物4,6-二[(4’-二乙基胺基)苯乙烯基]嘧啶-2-醇。通过研究该化合物在不同pH值的磷酸盐缓冲溶液中紫外-可见吸收光谱和荧光光谱的变化,发现λmax约为500 nm的吸收峰在溶液pH=6.78中吸收强度最大。荧光发射峰随着pH值的升高逐渐减弱,直至淬灭(pH=5.51)。更多还原

【Abstract】 4,6-Bis[(4′-diethylamino) styryl] pyrimidin-2-ol was synthesized and characterized.The UV-Vis and fluorescent properties were studied in phosphate buffer solutions at different pH value.The UV-Vis spectral results indicated that the peak located at ~500 nm reaches maximal intensity at pH=6.78.The fluorescent spectra data suggested that the intensity of emission peak decreased with increasing pH value.The fluorescence was quenched when the pH was 5.51.更多还原