Aggregation-induced emission luminogens and tunable multicolor polymer networks modulated by dynamic covalent chemistry

• Published in: Chinese chemical letters Vol. 33; no. 6; pp. 3267 - 3271
• Main Authors: Qin, Shilong, Zou, Hanxun, Hai, Yu, You, Lei
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.06.2022; State Key Laboratory of Structural Chemistry,Fujian Institute of Research on the Structure of Matter,Chinese Academy of Sciences,Fuzhou 350002,China; College of Chemical Engineering,Fuzhou University,Fuzhou 350116,China; State Key Laboratory of Structural Chemistry,Fujian Institute of Research on the Structure of Matter,Chinese Academy of Sciences,Fuzhou 350002,China%State Key Laboratory of Structural Chemistry,Fujian Institute of Research on the Structure of Matter,Chinese Academy of Sciences,Fuzhou 350002,China%College of Chemical Engineering,Fuzhou University,Fuzhou 350116,China; Fujian Science&Technology Innovation Laboratory for Optoelectronic Information of China,Fuzhou 350108,China
• Subjects: Aggregation-induced emission; Covalent polymer network; Dynamic covalent chemistry; Multicolor emission; Stimuli-responsive materials; Multicolor emission; Stimuli-responsive materials; Aggregation-induced emission; Dynamic covalent chemistry; Covalent polymer network
• ISSN: 1001-8417; 1878-5964
• DOI: 10.1016/j.cclet.2021.11.001

Aggregation-induced emission (AIE) based luminescent materials are generating intensive interest due to their unique fluorescence in the aggregation state. Herein we report a strategy of dynamic covalent chemistry (DCC) controlled AIE luminogens for the regulation of multicolor emission in reversible covalent polymer networks. Tetraphenylethene derived ring-chain tautomers were prepared, and the emission was readily controlled through multimode, such as changing the solvent, adding the base, and dynamic covalent reactions with amines. Moreover, the construction of dynamic covalent cross-linked luminescent hydrogels with tunable fluorescent, self-healing, and mechanical properties, was realized. The combination of AIE and aggregation-caused quenching (ACQ) fluorophores in the polymer network further enabled the realization of a multicolor modulator, including white emission, in both solution and gel states. The strategies and results presented should find utility in dynamic assemblies, polymer networks, chemical sensing, and responsive materials. [Display omitted] .