Dynamic Time‐Dependent Emission in Solution and Stable Dual Emission in Solid Matrix Exhibited by a Single‐Component Fluorescence System

• DOI: 10.1002/adfm.202314093
• Publication Date: 2024-01-13T03:56:39Z
• Authors: Dengli Chen; Cheng Bao; Liangliang Zhang; Qiaona Zhang; Zhiyin Wu; Zheng‐Yi Li; Xiao‐Qiang Sun; Leyong Wang; Tangxin Xiao
• Keywords: 01 natural sciences; 0104 chemical sciences

Abstract Organic luminescent materials with time‐dependent emission colors show promising applications in the fields of chemical sensing, high‐resolution bioimaging, and high‐security information encryption. Herein a fluorescence system based on spirocyclic scaffold‐bridged cyanostilbene dimer ( SDCS ) as single component mixed CH 3 CN/H 2 O solvent is presented. Specifically, original orange‐emitting nanoparticles prepared from by reprecipitation can transform into green‐emitting nanosheets over time driven supramolecular self‐assembly. It worth noting that such transformation rate be controlled tuning water fraction. Based these unique properties, fluorescent binary codes are developed, enabling encryption higher level security. Moreover, dual color individually fixed solid matrices hydrogel or powder. The obtained powders successfully used two‐color imaging latent fingerprints. This work demonstrates use strategy to control multiple emissions single‐component for multifunctional applications.