2-3-cyano-4-[(E)-2-(2-hydroxyphenyl)ethenyl]-5,5-dimethylfuran-2(5H)-ylidene}propanedinitriles which were found to exhibit solid state fluorescence with the emission maxima ranging from λ 594 to 640 nm. Chromophores containing an alkyl substituent in the benzene ring showed the most intense fluorescence.
在
乙酸铵存在下,5-取代的2-羟基
苯甲醛与2- [3-
氰基-4,5,5-三甲基
呋喃-2(5 H)-亚烷基]
丙腈(三
氰呋喃)在
乙醇中反应,得到2- 3-
氰基-4-[(E)-2-(2-羟基苯基)
乙烯基] -5,5-二甲基
呋喃-2(5 H)-亚烷基}
丙二腈,显示出固态荧光,发射最大值在λ594范围内到640 nm 在苯环中含有烷基取代基的发色团显示出最强的荧光。