Gao Ling, Wang Ying, Wang Jianqiang, Huang Li, Shi Liying, Fan Xiaoxing, Zou Zhigang, Yu Tao, Zhu Mei, Li Zhaosheng
School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China.
Inorg Chem. 2006 Aug 21;45(17):6844-50. doi: 10.1021/ic0516562.
A novel Zn2+-sensitive fluorescent chemosensor SC/SBA-15 has been obtained by the self-assembly of 4-chloroaniline-N-salicylidene (SC), a Schiff base ligand, within the channel of silylation-modified SBA-15 without destroying its hexagonally ordered mesoporous structure. The remarkable 200-fold fluorescence enhancement with a large Stokes shift of 180 nm in luminescence emission upon the addition of Zn2+ is attributed to the formation of a coordinate complex of a large rigid conjugate system and Zn2+ ions.
通过席夫碱配体4-氯苯胺-N-水杨醛（SC）在硅烷化改性的SBA-15通道内自组装，在不破坏其六方有序介孔结构的情况下，获得了一种新型的Zn²⁺敏感荧光化学传感器SC/SBA-15。加入Zn²⁺后，发光发射中出现了显著的200倍荧光增强，斯托克斯位移为180nm，这归因于大刚性共轭体系与Zn²⁺离子形成了配位络合物。
