N n dimethylformamide dmf ar

Poly(ethylene oxide) (PEO, Mn = 100 000), sodium carbonate (Na₂CO₃), hexadecyl trimethyl ammonium bromide (CTAB) and bismuth nitrate pentahydrate (Bi(NO₃)₃·5H₂O) were purchased from Anpel Laboratory Technologies (Shanghai, China). Pentaerythrotol triacrylate (PETA) was purchased from Yuanye Biological Inc (Shanghai, China). Dichloromethane (DCM, HPLC), methanol (AR) and N,N-dimethylformamide (DMF, AR) were purchased from Sinopharm Chemical Reagent Co., Ltd (Shanghai, China). The above-mentioned reagents were used as provided by the manufacturer without further purification. Ultrapure water produced from a Milli-Q device (18.2 MΩ cm⁻¹) was used throughout the experiments. L-929 fibroblast cells, Dulbecco's modified Eagle medium (DMEM), fetal bovine serum (FBS) and cell Counting Kit-8 (CCK8) were purchased from Shanghai Fanmeng Biotechnology Co., Ltd (Shanghai, China).

The chemicals of nickel(ii) nitrate hexahydrate (Ni(NO₃)₂·6H₂O, AR), phosphomolybdic acid (H₃PMo₁₂O₄₀·nH₂O, HPMo, AR), tungstophosphoric acid (H₃PW₁₂O₄₀·nH₂O, HPW, AR), silicotungstic acid (HSiW, H₄SiW₁₂O₄₀·nH₂O, HSiW, AR), and terephthalic acid (H₂-BDC, AR) are purchased from Shanghai Aladdin Biochemical Technology Co., Ltd, Shanghai, China. Absolute ethanol (AR), oleic acid (C18:1, AR), anhydrous methanol (AR), and N,N-dimethylformamide (DMF, AR) are purchased from Sinopharm Chemical Reagent Co., Ltd, Shanghai, China. These chemicals are directly used without further purification.