A multi-responsive luminescent sensor based on a stable Eu(iii) metal–organic framework for sensing Fe3+, MnO4−, and Cr2O72− in aqueous solutions. Issue 5 (12th January 2022)

• Record Type: Journal Article
• Authors: He, Qi-Qi; Yao, Shu-Li; Zheng, Teng-Fei; Xu, Hui; Liu, Sui-Jun; Chen, Jing-Lin; Li, Na; Wen, He-Rui
• Is Part Of: CrystEngComm. Volume 24:Issue 5(2022)
• Page Start: 1041
• Page End: 1048
• Publication Date: 2022-01-12
• Subjects: Crystals -- Periodicals; Crystal growth -- Periodicals; Crystallography -- Periodicals; Cristaux -- Périodiques; Cristaux -- Croissance -- Périodiques; Cristallographie -- Périodiques; 548
• DOI: 10.1039/d1ce01503f
• Languages: English
• ISSNs: 1466-8033

Abstract

Abstract : A stable benzothiadiazole-based Eu(iii ) metal–organic framework with cco topology has been successfully constructed, and represents the multifunctional fluorescence sensor toward Fe 3+, MnO4 − and Cr2 O7 2− in aqueous solutions. Abstract : A new water-stable three-dimensional (3D) Eu(iii ) metal–organic framework with the formula of {[Eu3 (BTDC)4 (HCOO)(H2 O)2 ]·solvents} n (JXUST-9 ) was successfully obtained by the solvothermal reaction of 2, 1, 3-benzothiadiazole-4, 7-dicarboxylic acid (H2 BTDC) and Eu(NO3 )3 ·6H2 O. The PXRD patterns indicate that JXUST-9 exhibits good stability when soaked in boiling water for at least 24 h. The fluorescence experiments indicate that JXUST-9 could be considered as a good multi-responsive sensing material for detecting Fe 3+, MnO4 − and Cr2 O7 2− in aqueous solutions via the turn-off effect, and the detection limits are 0.94 μM, 1.23 μM and 1.23 μM, respectively. JXUST-9 can also be regenerated at least five times for sensing Fe 3+, MnO4 − and Cr2 O7 2− . Moreover, a rapid detection test paper incorporated with JXUST-9 has been produced, which is helpful for carrying out visual detection of Fe 3+, MnO4 − and Cr2 O7 2− in daily applications.