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(A) GPC traces (RI detection, TFIP, 0.8 mL min–1, PMMA calibration) for the first block PEtOx (red) and PEtOx10-b-POx16 as an example of block copolymers (black) prepared by a sequential polymerization route (CH3CN, 80 °C). (B) Chemical structure and 1H NMR spectrum (CDCl3) of PEtOx10-b-POx16 (see: Entry 3 in Table 1).
