Optical Chemosensors Based on Transmetalation of Salen-Based Schiff Base Complexes

详细信息    查看全文

• 作者：Jinghui Cheng ; Xiaofeng Ma ; Yuhui Zhang ; Jiaoyan Liu ; Xiangge Zhou ; Haifeng Xiang
• 刊名：Inorganic Chemistry
• 出版年：2014
• 出版时间：March 17, 2014
• 年：2014
• 卷：53
• 期：6
• 页码：3210-3219
• 全文大小：726K
• 年卷期：v.53,no.6(March 17, 2014)
• ISSN：1520-510X

文摘

We report our systematic studies of novel, simple, selective, and sensitive optical (both colorimetric and fluorescent) chemosensors for detecting Al³⁺ based on transmetalation reactions (metal displacement or exchange reactions) of a series of K(I), Ca(II), Zn(II), Cu(II), and Pt(II) complexes containing different ligands of salen-based Schiff bases. Both the chemical structure of the salen ligand and the identity of the central metal ion have a tremendous impact on the sensing performance, which is mainly determined by the stability constant of the complex. Moreover, the selectivities of the salen-complex-based chemosensors are much better than those of the corresponding free salen ligands because of the shielding function of the filled-in metal ion in the complex. Therefore, the present work potentially provides a new and simple way to design optical probes via complex-based transmetalation reactions.