writer：Huiyu Qiu, SX Wei, H Liu, BB Zhan, HZ Yan, Wei Lu*, JW Zhang, Si Wu , and Tao Chen*
keywords：3D Hydrogel Structure; Aggregation-Induced Emission; Information Encryption; Multistate Fluorescence Switching; On-demand Decryption
source：期刊
specific source：Advanced Intelligent Systems, 2021, 3, 2000239
Issue time：2021年

Fluorescent hydrogels have recently become one of the most prominent materials for smart confidential information protection. But it is still quite challenging to develop 3D anticounterfeiting platform with on-demand information decryption and transmission capacities, which is of great importance to achieve high-level data protection security. Herein we present robust aggregation-induced emissive polymeric hydrogels with thermo-triggered multi-state fluorescence switching, shape memory and self-healing properties based on supramolecular dynamic lanthanide coordination interactions.  By a collective action of these promising properties, fluorescent hydrogel-based 3D information encoding platform was demonstrated for on-demand information decryption, in which information pre-encrypted in 3D hydrogel structures could be stepwisely decrypted by the control of external stimuli. Such unique ondemand information decryption features were further expanded to transmission of manifold customized messages to multiple receivers. The present study opens up the possibility of utilizing 3D fluorescent hydrogel structure for high-level information encryption and ondemand decryption.