chain end was synthesized via atom transfer radical polymerization (ATRP); poly (ε-
caprolactone)(PCL) with a− C C–segment and an adamantane (Ada) group at two ends,
respectively, was prepared through ring-opening polymerization (ROP), and poly (N-
isopropylacrylamide)(PNIPAM) with a− S–C (S)–S–segment, which can be converted into a
thiol group, was yielded by reversible addition–fragmentation chain transfer polymerization …