A cationic thorium–organic framework with triple single-crystal-to-single-crystal transformation peculiarities for ultrasensitive anion recognition. Issue 48 (8th November 2021)

• Record Type: Journal Article
• Authors: Li, Zi-Jian; Lei, Min; Bao, Hongliang; Ju, Yu; Lu, Huangjie; Li, Yongxin; Zhang, Zhi-Hui; Guo, Xiaofeng; Qian, Yuan; He, Ming-Yang; Wang, Jian-Qiang; Liu, Wei; Lin, Jian
• Is Part Of: Chemical science. Volume 12:Issue 48(2021)
• Page Start: 15833
• Page End: 15842
• Publication Date: 2021-11-08
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/d1sc03709a
• Languages: English
• ISSNs: 2041-6520

Abstract

Abstract : A cationic thorium–organic framework displaying unprecedented triple single-crystal-to-single-crystal transformations has been developed, allowing for ultrasensitive and selective sensing of iodate. Abstract : Single-crystal-to-single-crystal transformation of metal–organic frameworks has been met with great interest, as it allows for the creation of new materials in a stepwise manner and direct visualization of structural transitions when subjected to external stimuli. However, it remains a peculiarity among numerous metal–organic frameworks, particularly for the ones constructed from tetravalent metal cations. Herein, we present a cationic thorium–organic framework displaying unprecedented triple single-crystal-to-single-crystal transformations in organic solvents, water, and NaIO3 solution. Notably, both the interpenetration conversion and topological change driven by the SC–SC transformation have remained elusive for thorium–organic frameworks. Moreover, the single-crystal-to-single-crystal transition in NaIO3 solution can efficiently and selectively turn the ligand-based emission off, leading to the lowest limit of detection (0.107 μg kg −1 ) of iodate, one of the primary species of long-lived fission product 129 I in aqueous medium, among all luminescent sensors.