摘要
Four new fluorescent dyes based on bis（phenyl-ethynyl-）-2-naphthyl （BPEN） were designed and synthesized.To improve the solvatochromic property and enhance the brightness of the fluorescent BPEN,an electron-donating unit of azetidine and/or an electron deficient group of-NO2 was introduced.
Four new fluorescent dyes based on bis（phenyl-ethynyl-）-2-naphthyl （BPEN） were designed and synthesized.To improve the solvatochromic property and enhance the brightness of the fluorescent BPEN,an electron-donating unit of azetidine and/or an electron deficient group of-NO2 was introduced.
