科研之友
微信
新浪微博
Facebook
分享链接
摘要
A new sensor (LWZn) based on 7-diethylaminocoumarin Schiff base was synthesized to detect Zn2+ in the red emission region due to its extended pi-conjugation structure and the strong electron-withdrawing capability of nitrile groups. Although LWZn alone has weak fluorescence, its fluorescence intensity shows a 35-fold increase after combining with Zn2+ probably due to the inhibition of the conformational change in the excited state upon complexation with Zn2+. In addition, LWZn shows a good selectivity to Zn2+ over other metal cations, especially Cd2+, which often responds together with Zn2+.
- 出版日期2014-7
- 单位中国科学院理化技术研究所
