The retraction has been agreed following an investigation based on allegations raised by a third party. The investigation revealed the X-ray crystallographic data had been compromised. Thus, the conclusions are considered to be invalid.

Two novel coordination polymers (CPs) containing Co(II) with the compositions of [Co(L)(2,2'-bipy)] n (1) and [Co(L)(4,4'bipy) 4 ⋅ 2H 2 O] n (2) have been prepared via utilizing bipyridine (2,2'-bipy for 1 and bipy, 4,4'-bipy for 2) and the ligand of 1,4bis(3-carboxylbenzyl)piperazine acid (H 2 L) as the co-ligand under the hydrothermal conditions. In addition, the photodegradation of organic dyes performances for complex 1 and complex 2 have been studied. It is important that complex 2 reveals excellent dye adsorption and photodegradation performances. In addition, their protective activity on sepsis was assessed and the specific mechanism was discussed detailly. Firstly, the TNF-α and IL-1β content released via immune cells was detected through the ELISA detection kit after treated by compounds 1 and 2. Next, the activation level of NF-kB signaling pathway in the macrophages was determined via western blot.