Photocatalytic degradation of dyes and magnetic properties in two one-dimensional coordination polymers

Two coordination polymers (CPs) [M(HCOO)2(TPB)(H2O)2]n (M = Co, 1; Ni, 2; TPB = 1,3,5-tri(pyridin-4-yl) benzene) have been successfully synthesized under solvothermal conditions and characterized. Single-crystal Xray diffraction analyses showed that CPs 1-2 are three-dimensional (3D) supermolecules formed with two adjacent sets of mirror-symmetric zigzag-shaped polymer chains by hydrogen bonding. The photodegradation studies demonstrated that 1-2 showed high-efficiency degradation with a rate of 72.3 % and 81.3 % for RhB under ultraviolet irradiation within 120 min, and the mechanism study revealed that both two effective oxidants center dot O2- and center dot OH co-participated during the degradation. Furthermore, magnetic study indicated that 1-2 exhibited weak antiferromagnetic behaviour and presented easy-plane anisotropy with D = 8.64, 7.40 cm -1 respectively.