title: Introduction of lewis acidic and redox-active sites into a porous framework for ammonia capture with visual color response.
abstract: Based on the Lewis acidic site and redox ability of bipyridinium ligand, a porous framework with an adsorption advantage for ammonia over water and color response ability has been constructed. The compound is highly stable and flexible to external stimuli, exhibiting reversible single-crystal-to-single-crystal transformations, in response to temperature change and NH3 capture. More attractively, the title compound shows obvious color change from yellow to dark blue when exposed to ammonia vapor within just a few seconds, indicating a strong ability to function as a visual colorimetric absorbent for ammonia.
authors.affiliation: †State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, People's Republic of China.
authors.forename: Bin
authors.initials: B
authors.lastname: Tan
authors.affiliation: †State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, People's Republic of China.
authors.forename: Cheng
authors.initials: C
authors.lastname: Chen
authors.affiliation: †State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, People's Republic of China.
authors.forename: Li-Xuan
authors.initials: LX
authors.lastname: Cai
authors.affiliation: †State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, People's Republic of China.
authors.forename: Ya-Jun
authors.initials: YJ
authors.lastname: Zhang
authors.affiliation: †State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, People's Republic of China.
authors.forename: Xiao-Ying
authors.initials: XY
authors.lastname: Huang
authors.affiliation: †State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, People's Republic of China.|‡School of Chemistry, Beijing Institute of Technology, Beijing, 100081, People's Republic of China.
authors.forename: Jie
authors.initials: J
authors.lastname: Zhang
mesh_terms: D000327:Adsorption; D000641:Ammonia / Q000737:chemistry*; D003116:Color; D003124:Colorimetry; D018360:Crystallography, X-Ray; D058116:Lewis Acids / Q000737:chemistry*; D008024:Ligands; D010084:Oxidation-Reduction; D016062:Porosity
chemical_list: D058116:Lewis Acids; D008024:Ligands; D000641:Ammonia