A Chromo‐Fluorogenic Tetrazole‐Based CoBr2 Coordination Polymer Gel as a Highly Sensitive and Selective Chemosensor for Volatile Gases Containing Chloride

Catching chloride: A tetrazole-based ligand without long alkyl chains is used to form a coordination polymer gel with CoBr2 (1). Gel 1 has a spherical structure with a 20–30 nm diameter. More interestingly, gel 1 selectively recognizes toxic gases, such as HCl, SOCl2, (COCl)2, and COCl2 that contain chloride atoms. Detailed facts of importance to specialist readers are published as "Supporting Information". Such documents are peer-reviewed, but not copy-edited or typeset. They are made available as submitted by the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.