A novel 3D Zn-coordination polymer based on a multiresponsive fluorescent sensor demonstrating outstanding sensitivities and selectivities for the efficient detection of multiple analytes. Issue 42 (8th October 2021)

• Record Type: Journal Article
• Authors: Liu, Yu; Wang, Yan; Zhang, Xiao-Sa; Sheng, Yu-Shu; Li, Wen-Ze; Yang, Ai-Ai; Luan, Jian; Liu, Hong-Zhu; Wang, Zhong-Gang
• Is Part Of: Dalton transactions. Volume 50:Issue 42(2021)
• Page Start: 15176
• Page End: 15186
• Publication Date: 2021-10-08
• Subjects: Chemistry, Inorganic -- Periodicals; Chemistry, Physical and theoretical -- Periodicals; Chemistry, Inorganic -- Periodicals; 546.05
• DOI: 10.1039/d1dt02260a
• Languages: English
• ISSNs: 1477-9226

Abstract

Abstract : A Zn-CP exhibits remarkable fluorescence behaviours and stability in a wide range of pH values. It can become an outstanding candidate in the selective sensing of Fe 3+, Mg 2+, Cr2 O7 2−, MnO4 −, NB and NM at a lower detection limit. Abstract : A novel and unusual 3D luminescent coordination polymer (CP) [Zn2 (3-bpah)(bpta)(H2 O)]·3H2 O (1 ), where 3-bpah denotes N, N ′-bis(3-pyridinecarboxamide)-1, 2-cyclohexane and H4 bpta denotes 2, 2′, 4, 4′-biphenyltetracarboxylic acid, was successfully synthesized via hydrothermal methods from Zn(ii ) ions and 3-bpah and bpta ligands. The structure of this CP was investigated via powder X-ray diffraction (PXRD) analysis along with single crystal X-ray diffraction. Notably, 1 exhibits remarkable fluorescence behavior and stability over a wide pH range and in various pure organic solvents. More importantly, 1 can become an outstanding candidate for the selective and sensitive sensing of Fe 3+, Mg 2+, Cr2 O7 2−, MnO4 −, nitrobenzene (NB) and nitromethane (NM), at an extremely low detection limit. The changes in the fluorescence intensity exhibited by these six analytes in the presence of 1 over a wide pH range indicate that this polymer can be an excellent luminescent sensor. To the best of our knowledge, 1 is a rare example of a CP-based multiresponsive fluorescent sensor for metal cations, anions, and toxic organic solvents.