Core–Shell Fluorescent Polymeric Particles with Tunable White Light Emission Based on Aggregation Microenvironment Manipulation. Issue 48 (22nd October 2021)

• Record Type: Journal Article
• Authors: Wang, Guan; Yu, Hao; Yang, Liming; He, Zhentao; Zhou, Liangyu; Sun, Jiangman; Gu, Xinggui; Yang, Wantai; Tang, Ben Zhong
• Is Part Of: Angewandte Chemie international edition. Volume 60:Issue 48(2021)
• Page Start: 25246
• Page End: 25251
• Publication Date: 2021-10-22
• Subjects: aggregation microenvironment -- aggregation-induced emission -- core–shell engineering -- FRET -- white light emission; Chemistry -- Periodicals; 540
• DOI: 10.1002/anie.202110180
• Languages: English
• ISSNs: 1433-7851

Abstract

Abstract: White‐light emitting polymers (WLEPs) based on aggregation microenvironment‐sensitive aggregation‐induced emission (AIE) and Förster resonance energy transfer (FRET) have aroused great interest in lighting and optoelectronic devices. Herein, we developed a novel strategy to construct WLEP particles via a stepwise self‐stabilized precipitation polymerization of two emission‐complementary AIEgens under core–shell engineering, where the AIE characteristics and FRET process of core–shell fluorescent polymeric particles (CS‐FPPs) could be modulated by altering aggregation microenvironment under swelling and shrinking of polymers, facilitating the tunable white light emission of CS‐FPPs. Furthermore, such tuning could be fast realized in the solid state, thus demonstrating the potential in anti‐counterfeiting. This work proved the significance of aggregation microenvironment on emission of luminogens, guiding the development of high‐efficiency emission‐tunable materials. Abstract : Core–shell fluorescent polymeric particles (CS‐FPPs) were constructed based on aggregation‐induced emission (AIE) via the stepwise self‐stabilized precipitation (2SP) polymerization, and white light emission of CS‐FPPs was achieved with the CIE1931 coordinate of (0.33, 0.34), which could be simply but effectively tuned by manipulating the aggregation microenvironment of the AIEgens.