AUTHOR=Zhou Xiaojing , Liu Lili , Kou Hang , Zheng Shimei , Song Mingjun , Lu Jitao , Tai Xishi 

TITLE=A Multifunctional 3D Supermolecular Co Coordination Polymer With Potential for CO2 Adsorption, Antibacterial Activity, and Selective Sensing of Fe3+/Cr3+ Ions and TNP

JOURNAL=Frontiers in Chemistry

VOLUME=9

YEAR=2021

URL=https://www.frontiersin.org/journals/chemistry/articles/10.3389/fchem.2021.678993

DOI=10.3389/fchem.2021.678993

ISSN=2296-2646

ABSTRACT=<p>A 3D supermolecular structure [Co<sub>3</sub>(L)<sub>2</sub> (2,2′-bipy)<sub>2</sub>](DMF)<sub>3</sub>(H<sub>2</sub>O)<sub>3</sub> 1) (H<sub>3</sub>L = 4,4′,4″-nitrilotribenzoic acid) has been constructed based on H<sub>3</sub>L, and 2,2′-bipy ligands under solvothermal conditions. Compound <bold>1</bold> can be described as a (3, 6)-connected kgd topology with a Schläfli symbol (4<sup>3</sup>)<sub>2</sub>(4<sup>6</sup>.6<sup>6</sup>.8<sup>3</sup>) formed by [Co<sub>3</sub>(CO<sub>2</sub>)<sub>6</sub>] secondary building units. The adsorption properties of the activated sample 1a has been studied; the result shows that 1a has a high adsorption ability: the CO<sub>2</sub> uptakes were 74 cm<sup>3</sup>·g<sup>−1</sup> at 273 K, 50 cm<sup>3</sup>·g<sup>−1</sup> at 298 K, the isosteric heat of adsorption (Q<sub>st</sub>) is 25.5 kJ mol<sup>−1</sup> at zero loading, and the N<sub>2</sub> adsorption at 77 K, 1 bar is 307 cm<sup>3</sup> g<sup>−1</sup>. Magnetic measurements showed the existence of an antiferromagnetic exchange interaction in compound <bold>1</bold>, besides compound <bold>1</bold> exhibits effective luminescent performance for Fe<sup>3+</sup>/Cr<sup>3+</sup> and TNP.</p>