For a typical synthesis of [PEG27-b-PtBAMA41]4, tBAMA (2822 mg, 14 mmol, 400 equivalents), TPMA (81.5 mg, 280 µmol, 8 equivalents), Copper(II) Chloride (1.88 mg, 14 µmol, 0.4 equivalents), [PEG27amide-Br]4 (200 mg, 35 µmol, 1 equivalent) were dissolved in 22.5 mL iso-propanol and deoxygenated using four consecutive freeze-pump-thaw cycles. Afterward, Cu(0) (8.91 mg, 140 µmol, 4 equivalents) was added under inert conditions to the still frozen reaction mixture followed by four cycles changing between vacuum and argon before the polymerization mixture was allowed to refreeze. The polymerization was carried out at room temperature (23 °C) for 48 h. The reaction was then terminated by cooling in liquid nitrogen followed by precipitation into cold n-hexane. The residue was dissolved in dioxane and passed over a neutral AlOx column to remove the leftover copper species. The desired block copolymer was isolated by the removal of the leftover solvent under reduced pressure as a white powder. [PEG27-b-PtBAMA6]4 (600 mg) was dissolved in TFA (25 eq.) and stirred for 10 h at 50 °C. Then the reaction mixture was neutralized and dialyzed against water for 3 days with 3 exchanges per day. Afterward, the resulting dispersion was freeze-dried and washed with n-hexane. The polymer was obtained with slightly pinkish powder (yield: 50%).