Anion-induced two stable isostructural Cd(ii) LMOFs based on benzotriazole with the highly selective detection of Fe3+ ions. (23rd May 2022)

• Record Type: Journal Article
• Authors: Shao, Juan-Juan; Ni, Jian-Ling; Mensah, Abraham; Liang, Yu; Li, Guang-Jun; Chen, Li-Zhuang; Wang, Fang-Ming
• Is Part Of: New journal of chemistry. Volume 46:Number 22(2022)
• Page Start: 10927
• Page End: 10933
• Publication Date: 2022-05-23
• Subjects: Chemistry -- Periodicals; Chimie -- Périodiques; 540
• DOI: 10.1039/d2nj01514e
• Languages: English
• ISSNs: 1144-0546

Abstract

Abstract : Two new LMOFs, [Cd9 (BTA)6 (5-tbuip)6 O2 ] n (LMOF-1 ) and [Cd3 (BTA)2 (5-tbuip)2 ] n (LMOF-2 ), show strong luminescence, and LMOF-1 can detect Fe 3+ with a very large quenching coefficient, indicating its potential application in chemical sensors. Abstract : Two new LMOFs, [Cd9 (BTA)6 (5-tbuip)6 O2 ] n (LMOF-1 ) and [Cd3 (BTA)2 (5-tbuip)2 ] n (LMOF-2 ) (BTA = 1 H -benzotriazole, 5-tbuip = 5- tert -butylisophthalic acid), have been synthesized by a solvothermal method. The different anions of cadmium salts lead to two isostructural LMOFs. Fe 3+ could be detected by LMOF-1 with N-rich sites, which possessed a high quenching coefficient ( K sv ) of up to 1.87 × 10 5 M −1 . The K sv value for the detection of Fe 3+ is better than or comparable to those reported in the literature. Since LMOF-2 had a larger pore size compared to that of LMOF-1, it could detect Cr2 O7 2− with a higher K sv than LMOF-1 . In addition, LMOF-1 is closer to white light, which means that it has potential application in white light-emitting diodes (WLEDs).