A self-calibrating dual responsive platform for the sensitive detection of sulfite and sulfonic derivatives based on a robust Hf(iv) metal–organic framework. Issue 4 (13th December 2019)

• Record Type: Journal Article
• Authors: Xing, Kai; Fan, Rui-Qing; Liu, Xiao-Yuan; Gai, Shuang; Chen, Wei; Yang, Yu-Lin; Li, Jing
• Is Part Of: Chemical communications. Volume 56:Issue 4(2020)
• Page Start: 631
• Page End: 634
• Publication Date: 2019-12-13
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1039/c9cc07869j
• Languages: English
• ISSNs: 1359-7345

Abstract

Abstract : A robust Hf-MOF exhibits highly-sensitive and opposite ratiometric fluorescence response towards sulfite and sulfonic derivatives. Abstract : A robust hafnium-based metal organic framework, Hf-PBTA, with sensitive and self-calibrating dual-emissive fluorescence response towards sulfite and sulfonic derivatives, including antibiotic sulfamethazine, has been developed, which shows fast detection of sulfite ions at a concentration as low as 76 ppb. The opposite response tendency from two radiative pathways towards aromatic sulfonic molecules and sulfite anions stems from the synergistic effect of the pyridine protonation effect, π–π stacking interaction and intramolecular twist motion.