4,4′-Biphenyldisulfonic acid induced coordination polymers of symmetrical tetramethyl cucurbit[6]uril with alkaline-earth metals for detection of antibiotics

Chen, Kai; Zhu, Zhao Qiang; Zhang, Ming Hui; Yang, Xiang; Li, Jie; Chen, Chen; Redshaw, Carl

Abstract

Three new coordination polymers based on macrocyclic symmetrical tetramethyl cucurbit[6]uril (TMeQ[6]) with formulae {[Ca2(C40H44N24O12)(H2O)10](C12H8O6S2)2}·13H2O (1), {[Sr(C40H44N24O12)(H2O)4](C12H8O6S2)}·13H2O (2), and {[Ba2(C40H44N24O12)(C12H8O6S2)](C12H8O6S2)(H2O)7}·12H2O (3) have been obtained by the self-assembly of TMeQ[6] with the corresponding alkaline-earth metal salts in the presence of 4,4′-biphenyldisulfonic acid (H2BPDS). Single crystal X-ray diffraction analysis of these three coordination polymers reveals that the deprotonated 4,4′-biphenyldisulfonic acid (H2BPDS2−) plays an important role in the self-assembly of these coordination polymers. In complexes 1 and 2, only the TMeQ[6] is involved in coordination with the Ca2+ and Sr2+ ions. The BPDS2− is involved in “outer-surface interactions” with the TMeQ[6]. Meanwhile, in complex 3, the BPDS2− is also coordinated with the Ba2+ ion. These coordination polymers provide a new strategy to design and construct Q[n]-based poly-dimensional coordination polymers, which can be built by one-dimensional Q[n]-metal coordination chains via outer-surface interactions. Furthermore, complex 1 can detect NFX (norfloxacin) molecules with high selectivity.

Citation

Chen, K., Zhu, Z. Q., Zhang, M. H., Yang, X., Li, J., Chen, C., & Redshaw, C. (2023). 4,4′-Biphenyldisulfonic acid induced coordination polymers of symmetrical tetramethyl cucurbit[6]uril with alkaline-earth metals for detection of antibiotics. CrystEngComm, 25(6), 961-970. https://doi.org/10.1039/d2ce01470j

• Journal Article Type: Article
• Acceptance Date: Jan 5, 2023
• Online Publication Date: Jan 18, 2023
• Publication Date: Jan 18, 2023
• Deposit Date: Mar 8, 2023
• Publicly Available Date: Jan 19, 2024
• Journal: CrystEngComm
• Electronic ISSN: 1466-8033
• Publisher: Royal Society of Chemistry
• Peer Reviewed: Peer Reviewed
• Volume: 25
• Issue: 6
• Pages: 961-970
• DOI: https://doi.org/10.1039/d2ce01470j
• Keywords: Condensed Matter Physics; General Materials Science; General Chemistry
• Public URL: https://hull-repository.worktribe.com/output/4184151