Fig. 1: Amphiphilic-pyridinium-assisted aldol-type interfacial polycondensation (AP-ATIP).

a Schematic of the reaction between ATMP and aldehyde monomer. b The synthesis of 2DCPs at air/water interface. c The structure of monolayer and multilayer 2DCPs. d The self-assembled monolayer of ATMP monomers at water interface. e The relationships of self-assembly capability and chemical reactivity among different ATMP monomers.