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Thermo-gelation polymers have attracted increasing attention over decades. However, rare facile tuning method of sol-gel transition temperature restricted the wider application. Preceding study indicated that supramolecular interactions demonstrated a powerful means to control the structure and property of polymeric materials. Here we designed an N-isopropylacrylamide(NIPAM) based thermo-sensitive copolymer with naphthyl(Np) on its side chain. Positive-charged side-chain ternary complex was formed with cucurbit[8]uril(CB[8]) and methylviologen(MV~(2+)) via CB[8]-enhanced intermolecular charge-transfer(CT) interaction. Introducing the ternary complex CB[8]/MV~(2+)/Np on side-chain altered microstructure of macromolecular chains and led to a strong tendency for thermo gelation. Altering content of CB[8] and MV~(2+) changed content of the positive-charged side-chain ternary complex and varied gelation temperature. Therefore,introducing supramolecular interaction endowed the hydrogel with tunable gelation property.
However, rare facile tuning method of sol-gel transition temperature restricted the wider application. Preceding study indicated that supramolecular Meet a powerful means to control the structure and property of polymeric materials. Here we designed an N-isopropylacrylamide (NIPAM) based thermo-sensitive copolymer with naphthyl (Np) on its side chain. Positive-charged side-chain ternary complex was formed with cucurbit [8] (2+) via CB [8] -enhanced intermolecular charge-transfer (CT) interaction. Introducing the ternary complex CB [8] / MV ~ (2 +) / Np on side-chain altered microstructure of macromolecular chains and led to a strong tendency for thermo gelation. Altering content of CB [8] and MV ~ (2+) changed content of the positive-charged side-chain ternary complex and varied gelation temperature. Therefore, introducing supramolecular interaction endowed the hydrogel with tunable gelation property.