Three multi-responsive luminescent Zn-CPs for the detection of antibiotics/cations/anions in aqueous media

• Published in: CrystEngComm Vol. 25; no. 4; pp. 593 - 6
• Main Authors: Fan, Chuanbin, Huang, Guimei, Xing, Zhiyong, Wang, Junli, Pang, Yaqin, Huang, Qingping, Huang, Shifu, Zong, Ziao, Guo, Feng
• Format: Journal Article
• Language: English
• Published: Cambridge Royal Society of Chemistry 23.01.2023
• Subjects: Antibiotics; Aqueous solutions; Benzene; Coordination polymers; Dicarboxylic acids; Environmental protection; Hydrocarbons; Imidazole; Investigations; Photoluminescence; Pollutants; Recyclability; Selectivity; X ray powder diffraction; X-ray diffraction; Zinc
• ISSN: 1466-8033; 1466-8033
• DOI: 10.1039/d2ce01507b

Development of luminescent coordination polymers (LCPs) for effective detection of the environmental pollutants is urgent and important for human health and environmental protection. Three novel Zn-LCPs, {[Zn 1 (L)(4,4′-bbibp)]-[Zn 2 (L)(4,4′-bbibp)]} n [ YMUN 6 (for Youjiang Medical University for Nationalities)], [Zn(L)(1,4-bimb)] n ( YMUN 7 ), and [Zn(L)(4,4′-bidpe)] n ( YMUN 8 ), were fabricated from flexible dicarboxylic acid 1,3-bis(4′-carboxylphenoxy)benzene (H 2 L) and different imidazole ligands [4,4′-bbibp = 4,4′-bis(benzimidazol-1-yl)biphenyl, 1,4-bimb = 1,4-bis(imidazol-1ylmethyl)benzene, 4,4′-bidpe = 4,4′-bis(imidazolyl)diphenyl ether] using solvothermal conditions. They were characterized using X-ray diffraction (XRD), infrared (IR), thermogravimetric (TG), powder X-ray diffraction (PXRD), and photoluminescence (PL) spectroscopic techniques. YMUN 6 possessed the "ABAB" interpenetrating 2D complanate structure. YMUN 7 showed a three-interpenetrating 2D network. YMUN 8 displayed a hcb 3-connected 3-fold interpenetrated 2D network. Photoluminescent properties of YMUN 6-8 were investigated, and 6-8 served as "turn off" sensors that could detect chlortetracycline ( Chl ), Ag + , and Cr 2 O 7 2− in an aqueous solution with simultaneous high efficiency and sensitivity. Notably, the investigation of Ag + sensing was most focused on lanthanide metal LCPs, and Zn-LCPs have rarely been reported in this direction. Furthermore, selectivity and recyclability were also investigated. The designed synthesized route of YMUN 6-8 .