methoxycarbonyl, cyano, and nitro groups, were synthesized. Except for the nitro group, the resulting compounds exhibited extremely high fluorescence quantum yields (ΦF >0.85 in chloroform). The diphenylfluorene containing nitro groups have higher fluorescence quantum yield (ΦF = 0.31 in N,N’-dimethyl-formamide) than other nitro-group-containing fluorophores which were previously reported (ΦF <0.1). Furthermore
合成了功能性π-延伸的
芴衍
生物,含有不同官能团如氢,三甲基甲
硅烷基(TMS),甲氧基羰基,
氰基和硝基的2,7-二(对-取代-苯基)
芴。除硝基,所得化合物显示出非常高的荧光量子产率(Φ ˚F > 0.85的
氯仿溶液)。含二苯基
芴硝基有(较高的荧光量子产率Φ ˚F 中= 0.31 Ñ,Ñ “ -二甲基甲酰胺)比其他含硝基基团的荧光团,其被先前报道(Φ ˚F<0.1)。此外,该化合物显示出大的斯托克斯位移,并发出绿色到橙色的光,并且通过溶剂产生独特的开关行为。