1 3 5 trimethylbenzene

Zinc acetate dihydrate (Zn(OAC)₂·2H₂O, 99.99%) and dopamine hydrochloride (AR, 98.0%,) were purchased from Aladdin Corp. Cetyltrimethylammonium bromide (CTAB, 99%) and triblock poly(ethylene oxide)-b-poly(propylene oxide)-b-poly(ethylene oxide) Pluronic F-127 (Mav = 12,600) were purchased from Sigma-Aldrich. Tris(hydroxymethyl)aminomethane (Tris, ≥99.5%), 2-methylimidazole (1-MeIM, AR, ≥98.0%), zinc nitrate hexahydrate (Zn(NO₃)₂·6H₂O, AR, ≥99.0%), cobalt (II) nitrate hexahydrate (Co(NO₃)₂·2H₂O, ≥ 98.5%,), 1,3,5-trimethylbenzene (TMB, ≥ 99.5%), hydrochloric acid (HCl, 36.0–38.0%), 2,3,6-trimethylphenol (TMP, 98.0%), methanol anhydrous (AR, ≥99.5%), hydrogen peroxide (30 wt.%), ammonium hydroxide solution (28 wt.% NH₃ in H₂O), polyvinylpyrrolidone K30 (GR), copper(II) chloride dihydrate(AR, ≥99.0%) and anhydrous ethanol (AR, ≥99.7%) were purchased from Sinopharm Chemical Reagent Co., Ltd. Disulfiram (97%) was purchased from Aladdin Reagent Co. Ltd. Fetal bovine serum (FBS), penicillin-streptomycin, trypsin, and RPMI 1640 medium were provided by Gibco Life Technologies Co. Cell Counting Kit-8 (CCK-8), calcein-AM/propidium iodide (PI) and annexin V-FITC Apoptosis Detection Kit were obtained from Beyotime Biotech (China).

Chemicals were used exactly as bought and all were of analytical grade. The following substances were obtained from Shanghai Tansoole: 5,10,5,20-tetra(4-aminophenyl)porphyrin (TAPP), 1,3,5-benztriformaldehyde (BDA), 1,4-dioxane, ethanol, tetrahydrofuran, and acetone. Other chemicals were bought from Sinopharm Chemical Reagent Co., Ltd. (Shanghai, China), including CuCl₂·6H₂O, FeSO₄·6H₂O, MnSO₄·4H₂O, CH₂Cl₂, methanol, acetic acid, and 1,3,5-trimethylbenzene. As a supporting electrolyte, phosphate buffer solution was prepared using 0.1 M NaH₂PO₄/Na₂HPO₄.