In this study, three carbazole-coumarin hybrid dyes were successfully synthesized, and their UV-vis absorption spectra, fluorescence spectra, and structural properties were investigated. The results indicated that diethyl 12-hexyl-2,9-dioxo-9,12-dihydro-2H-dipyrano[2,3-b:3',2'-h]-carbazole-3,8-dicarboxylate showed a slight red shift of the maximum absorption wavelength, and its fluorescence intensity
在这项研究中,成功地合成了三种
咔唑-
香豆素杂化
染料,并研究了它们的紫外可见吸收光谱,荧光光谱和结构性质。结果表明,12-己基-2,9-二氧代-9,12-二氢-2 H-二
吡喃并[2,3- b:3',2' - h ]-
咔唑-3,8-二
羧酸二
乙酯显示出最大吸收波长发生轻微的红移,其荧光强度在4000 arb单位以上,比乙基10-己基-8-羟基-2-氧代-2-氧代2,10-二氢
吡喃[2,3- b]高约22倍]
咔唑-3-羧酸盐和10-己基-8-(己氧基)-2-氧代乙基,2,10-二氢
吡喃[2,3 - b ]
咔唑-3-羧酸盐在CHCl 3中。三种化合物的荧光强度随浓度的升高先增加,然后降低,最大发射波长显示出轻微的红移。THF中
二乙基12-己基-2,9-二氧代-9,12-二氢-2 H-二
吡喃并[2,3- b:3',2' - h ]
咔唑-3,8-二
羧酸酯的稳定pH范围是2-10。