Core–Shell Fluorescent Polymeric Particles with Tunable White Light Emission Based on Aggregation Microenvironment Manipulation

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.

Controllable Aggregation-Induced Emission and Förster Resonance Energy Transfer Behaviors of Bistable [c2] Daisy Chain Rotaxanes for White-Light Emission and Temperature-Sensing Applications

“…30−36 In fact, AIE properties can be incorporated with FRET processes to serve as simple and effective approaches for the development of tunable and multiple fluorescent materials. 37 By tuning environments, AIEgens undergo the restrictions of intramolecular motions and variations of conformational structures, enabling significant changes in various excited states, so the FRET behaviors can be adjusted through the differentiation of AIE donors and/or acceptors subsequently. Thus, the cooperation of AIE and FRET phenomena could be utilized for the exploration of many potential applications.…”

“…Since then, AIE luminogens (AIEgens) have obtained in-depth attention and shown wide applications in light emissions, chemosensors, biosensors, and so on. − Förster resonance energy transfer (FRET) processes are well-known photophysical properties that perform the energy transfer between donor and acceptor moieties by means of nonradiative dipole–dipole couplings . Taking advantage of FRET techniques, chemists have explored different combinations of donors and acceptors in various platforms, such as small molecules, dendrimers, organo gels, polymers, biomaterials, metal–organic framework motifs, and supramolecules. − In fact, AIE properties can be incorporated with FRET processes to serve as simple and effective approaches for the development of tunable and multiple fluorescent materials . By tuning environments, AIEgens undergo the restrictions of intramolecular motions and variations of conformational structures, enabling significant changes in various excited states, so the FRET behaviors can be adjusted through the differentiation of AIE donors and/or acceptors subsequently.…”

New dual-mode orthogonal tunable fluorescence systems based on cucurbit[8]uril: White light, 3D printing, and anti-counterfeit applications

“…[13][14][15][16][17][18][19][20][21][22][23][24] By varying other parameters such as pH, the emission can be controlled, for example, to produce white light. [25][26][27][28][29][30][31] The presence of other guests can also impact the behavior of the system. There is thus a need to further develop combinations of guests and Q[n]s to expand the armory of available and tunable supramolecular emissive systems.…”