Wu Yuandi, Lin Meihua, Liu Dongyang, Liu Ming, Qian Jing
College of Chemistry, Tianjin Normal University Tianjin 300387 P. R. China
Tianjin Key Laboratory of Structure and Performance for Functional Molecules, Tianjin Normal University Tianjin 300387 P. R. China.
RSC Adv. 2019 Oct 29;9(60):34949-34957. doi: 10.1039/c9ra06639j. eCollection 2019 Oct 28.
A two-dimensional luminescent cadmium(ii) coordination polymer, [Cd(modbc)] (Cd-P); modbc = 2-methyl-6-oxygen-1,6-dihydro-3,4'-bipyridine-5-carbonitrile, was successfully synthesized by a solvothermal reaction and fully characterized. Cd-P exhibited excellent luminescence emission, and detected Cu, Co, Fe, Hg, Ni and Fe ions with high sensitivity and showed good anti-interference performance. After encapsulation of Tb ions in Cd-P, the as-obtained fluorescent functionalized Tb@Cd-P maintained distinct chemical stabilities in different pHs and metal salt solutions. Subsequently, we explored the potential application of Tb@Cd-P as a probe for Fe ions. A new and convenient method for individual identification of Fe ions by the combination of Cd-P and Tb@Cd-P was successfully established. A possible sensing mechanism is discussed in detail.
通过溶剂热反应成功合成了一种二维发光镉（II）配位聚合物[Cd(modbc)]（Cd-P）；其中modbc = 2-甲基-6-氧代-1,6-二氢-3,4'-联吡啶-5-腈，并对其进行了全面表征。Cd-P表现出优异的发光性能，能够高灵敏度地检测铜、钴、铁、汞、镍和铁离子，且具有良好的抗干扰性能。在Cd-P中封装铽离子后，所得的荧光功能化Tb@Cd-P在不同pH值和金属盐溶液中保持了明显的化学稳定性。随后，我们探索了Tb@Cd-P作为铁离子探针的潜在应用。通过Cd-P和Tb@Cd-P的组合成功建立了一种新颖便捷的铁离子个体识别新方法。详细讨论了可能的传感机制。
