ORCID Profile
0000-0003-4966-285X
Current Organisation
Beijing Institute of Technology
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Publisher: Wiley
Date: 05-02-2020
Publisher: Wiley
Date: 03-07-2021
Abstract: Chromophores that exhibit aggregation‐induced emission (i.e., aggregation‐induced emission luminogens [AIEgens]) emit intense fluorescence in their aggregated states, but show negligible emission as discrete molecular species in solution due to the changes in restriction and freedom of intramolecular motions. As solvent‐swollen quasi‐solids with both a compact phase and a free space, gels enable manipulation of intramolecular motions. Thus, AIE‐active gels have attracted significant interest owing to their various distinctive properties and promising application potential. Herein, a comprehensive overview of AIE‐active gels is provided. The fabrication strategies employed are detailed, and the applications of AIEgens are summarized. In addition, the gel functions arising from the AIE moieties are revealed, along with their structure–property relationships. Furthermore, the applications of AIE‐active gels in erse areas are illustrated. Finally, ongoing challenges and potential means to address them are discussed, along with future perspectives on AIE‐active gels, with the overall aim of inspiring research on novel materials and ideas.
Publisher: Wiley
Date: 04-10-2021
Abstract: Microscopic control of macroscopic phenomena is one of the core subjects in materials science. Particularly, the spatio‐temporal control of material behaviors through a non‐contact way is of fundamental importance but is difficult to accomplish. Herein, a strategy to realize remote spatio‐temporal control of luminescence behaviors is reported. A multi‐arm salicylaldehyde benzoylhydrazone‐based aggregation‐induced emission luminogen (AIEgen)/metal‐ion system, of which the fluorescence can be gated by the UV irradiation with time dependency, is developed. By changing the metal‐ion species, the fluorescence emission and the intensity can also be tuned. The mechanism of the UV‐mediated fluorescence change is investigated, and it is revealed that a phototriggered aggregation‐induced emission (PTAIE) process contributes to the behaviors. The AIEgen is further covalently integrated into a polymeric network and the formed gel/metal‐ion system can achieve laser‐mediated mask‐free writing enabled by the PTAIE process. Moreover, by further taking advantage of the time‐dependent self‐healing property of hydrazone‐based dynamic covalent bond, transformable 4D soft patterns are generated. The findings and the strategy increase the ways to manipulate molecules on the supramolecule or aggregate level. They also show opportunities for the development of controllable smart materials and expand the scope of the materials in advanced optoelectronic applications.
Publisher: Wiley
Date: 26-10-2022
Abstract: Advanced materials with high performance and distinctive function are one of the main driving forces for the development of human society. The selection of appropriate materials and adequately utilizing their features to apply them in a specific area rationally are of great significance but remain challenging. Herein, an aggregation‐induced emission (AIE)‐active nanocomposite (NC) hydrogel is developed by introducing a pH‐responsive AIE luminogen (AIEgen) into a Laponite XLS olyacrylamide‐based NC hydrogel (Laponite is a trademark of the company BYK Additives Ltd.). The AIEgen can protonate to interact with the negatively charged clay through the electrostatic interaction, which results in a drastic fluorescence enhancement due to the restriction of intramolecular motion by the rigid clay to the protonated AIEgen. This behavior facilitates the input of fluorescent information with a high contrast ratio in the hydrogel by acid stimulation. Moreover, by utilizing the excellent resilience of the hydrogel, hierarchically inputting and displaying the information in the original and stretched states of the hydrogel film is realized, which achieves information‐storage expansion and dual‐encryption via switching between stretching and restoring the film. This work showcases fully and synergistically utilizing the superiorities of various advanced materials to achieve superior applications and should guide the future development of advanced materials in emerging areas.
Publisher: American Chemical Society (ACS)
Date: 14-01-2019
Publisher: Royal Society of Chemistry (RSC)
Date: 2021
DOI: 10.1039/D0QM01004A
Abstract: A facile synthesized AIE bioprobe was developed to detect peroxynitrite sensitively and specifically. This bioprobe can realize both in vitro ONOO − detection and in vivo visualization of inflammation.
No related grants have been discovered for Zhao Li.