Journal
INORGANIC CHEMISTRY
Volume 53, Issue 6, Pages 3210-3219Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ic5000815
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Funding
- National Natural Science Foundation of China [21172160, 21372169, J1103315]
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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.
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