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

• Published in: Frontiers in chemistry Vol. 9; p. 678993
• Main Authors: Zhou, Xiaojing, Liu, Lili, Kou, Hang, Zheng, Shimei, Song, Mingjun, Lu, Jitao, Tai, Xishi
• Format: Journal Article
• Language: English
• Published: Frontiers Media S.A 15-07-2021
• Subjects: antibacterial; Chemistry; CO2 adsorption; Fe3+/Cr3; magnetism; sensing; TNP
• ISSN: 2296-2646; 2296-2646
• DOI: 10.3389/fchem.2021.678993

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