A Stable 3D Zn-Coordination Polymer Sensor Based on Dual Luminescent Ligands for Efficient Detection of Multiple Analytes under Acid or Alkaline Environment
Jianxin Ma, Na Xu, Yu Liu, Yue Wang, Hui Li, Guo‐Cheng Liu, Xiuli Wang, Jian‐Rong Li
Abstract
A novel 3D luminescent coordination polymer (LCP) [Zn4(3-dpyb)2(odpa)2(H2O)3]·4H2O (1) (3-dpyb = N,N′-bis (3-pyridinecarboxamide)-1,4-butane, H4 odpa = 4, 4′-oxidiphthalic acid) was successfully synthesized under solvothermal conditions. LCP 1 displays remarkable fluorescent behavior and stability in a wide range of pH values and different pure organic solvents. More importantly, LCP 1 can become an outstanding candidate in the selective sensing of Fe3+, Bi3+, Cr2O72–, MnO4–, nitrobenzene (NB), acetaldehyde (AH), and acetylacetone (Hacac) under a lower detection limit. The change process of fluorescent intensity of these seven analytes in a diverse pH range indicates that LCP 1 can be an excellent luminescent sensor in multiple acid/base solutions. As far as we know, it is an infrequent example of a CP-based multiresponsive fluorescent sensor for metal cations, oxyanions, and toxic organic solvents under an acid or alkaline environment.