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A novel four-layer gel with quadruple thermosensitivity was prepared by four-step amidation of DAA with four different kinds of alkylamines or their mixture.The swelling of each layer in the gel occurred independently at temperatures below its LCST.An asymmetric semi-cylindrical triple-layer gel containing a PNIPA-NNPA intermediate layer between the PNIPA core and PNNPA shell layers was prepared, and its bending behavior was observed in response to stepwise temperature changes.