109.
A novel thiophene attached anthracene (
TA) based fluorescent compound was designed and synthesized. The
TA showed a high quantum yield (Qy = 0.34) in regard to fluorescence. We applied this
TA compound to detect specific metal compound and found that it could identify
CuCl2 from other metals through dramatic fluorescence change at λ
max = 460 nm. It showed strong quenching fluorescence property with
CuCl2 while with other metal compounds it exhibited strong blue fluorescence emission. UV/Vis absorption spectroscopy clearly demonstrated that the quenching property of
TA at λ
max = 460 nm was due to overlapping of the fluorescence peak of
TA at λ
max = 460 nm and the absorption band of
CuCl2 (from 190 nm to 525 nm). Binding constant (K′), which was 0.0895 mM
?2, indicated a complexation ratio between
TA and
CuCl2 as 1:2 and this interaction induced quenching property.
相似文献