Preparation of acrylate terpolymer: 1, 4-butylene diacrylate 1/5(x + y), acrylic acid-β-chloroethyl ester (y) and acrylate (x) mol ratio is 1:6, the yield is 86.8%.
Preparation of 3, 6-dithio-1-octanol: Using chloroethanol as raw material, it reacts with sodium ethanethiol in anhydrous ethanol to prepare ethyl thioethanol, and then reacts with thionyl chloride to prepare ethyl thiochloroethane. Ethylthiochloroethane reacts with mercaptoethanol-sodium ethoxide solution to produce 3, 6-dithio-octanol.
Preparation of acrylate terpolymer ligands containing dithioether side groups: use metal sodium 2 times the mol chlorine content in the terpolymer and 3, 6-dithio-1-octanol 4 times the mol chlorine content in the terpolymer, in 50ml tetrahydrofuran solution, under the protection of nitrogen, react at room temperature for 18h, then add metered polymer, reflux for 48h, and repeatedly wash with ethanol and deionized water, at 100 ℃/1.3kPa, dried to constant weight, acrylate terpolymer ligand (PISS) of dithioether side group was prepared.
Preparation of disulfide platinum complex: in a 100ml conical flask, 2g of PISS and 1/3 of its S content (mol) potassium chloroplatinate and 50ml of acetone solution are added, protected by argon (Ar), stirred and refluxed for 48h, filtered, the product is repeatedly washed with acetone and deionized water, and dried to constant weight at 55 ℃(13kPa) to obtain disulfide.