A dynamic solvent-modulated single-component emissive system for information encryption

Abstract

The development and fabrication of advanced fluorescence materials are essential to meet the increasing demand for high-security information encryption. Herein, a smart dynamic single-component system with novel orthogonal and time-dependent encryption properties was obtained based on solvent-modulated emission. By controlling the aggregation of BODIPY derivatives via solvent variation, multi-color fluorescence, ranging from blue and cyan to green, was achieved. Taking advantage of solvent-tunable fluorescence, dynamically controlled information encryption strategies were designed and developed, such as fluorescent codes with orthogonal encryption functions. Nevertheless, a time-dependent encryption system was developed by enabling the fluorophore in the solid phase, which could display multiple codes over a time scale, with the correct information being readable only at specified time. This work provides a promising strategy for developing information encryption materials with higher security requirements.