Intelligent Surface with Multi-dimensional Information Enabled by a Dual Responsive Pattern with Fluorescence and Wrinkle

Surface patterns with dynamically tunable fluorescence and topography have attracted much attention due to their capabilities for information storage and security. Herein, we present a strategy toward an intelligent surface based on a bilayer wrinkle system, which can output four types of binary code groups-"11", "10", "01", and "00"-by a responsive pattern of fluorescence and wrinkle. The bilayer comprises a soft PDMS substrate and crosslinked polymer network of furan-containing polymer (PEA-Fu) and dimaleimide-substituted tetraphenylethene (TPE-2MI) as the top layer, whose fluorescence and modulus can be regulated by light and temperature. Temperature-controlled reversible Diels-Alder can regulate the crosslinking density and modulus of the PEA-Fu@TPE-2MI network and the photoinduced electron transfer process of TPE-2MI, resulting in reversible fluorescence and wrinkle pattern. By UV light irradiation with photomasks, various hierarchical oriented wrinkles with tunable fluorescence can be fabricated through photoinduced radical-coupling crosslinking and photocyclization of TPE-2MI. Based on these multiple regulations, the intelligent surface can find potential applications that meet high requirements in information encryption and readout, as well as anticounterfeiting.