Pyrazine‐Based Chiral AIE Electronic Acceptors for Real‐Time Monitoring Hierarchical Self‐Assembly and Tuning Emissions through Intermolecular Charge‐Transfer Effects DOI
Xiang He,

Meizhu Xie,

Yingjuan Hong

et al.

Advanced Optical Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 3, 2024

Abstract Development of chiral aggregation‐induced emission (AIE) materials toward hierarchical self‐assembly is crucial to reveal the origin and evolution life. In this work, a pair AIE enantiomers fabricated by attaching typical units binaphthyl core via single bond linkage. The behavior inherited from introduced unit while can not only improve photo‐physical properties but also provide whole molecules with chirality. Moreover, as driven dipolar structure chirality AIEgens, different morphologies such spheres, ribbons or fibers, flowers, even bigger structures various sizes be dynamically monitored assembled time, which provided favorable evidence study structural molecular level higher‐level structure. On other hand, these AIEgens act strong electronic acceptors due unit. By complexing them donors, resulting intermolecular charge transfer induce remarkable red emissions tunable much their individuals. This enabled it facile, economic, flexible approach develop organic photoelectric materials.

Language: Английский

Unconventional Luminescence Polymer with Color‐Tunability based on Solvent‐induced Electrostatic Potential Distribution of Fluorophore DOI Open Access

Yanyun He,

Yujie Qiao,

Zheng Li

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(47)

Published: Aug. 13, 2024

Abstract Tuning full‐color emission of polymers holds significant promise. However, preparing unconventional luminescence with color‐tunability in dilute solution and understanding the relationship between non‐covalent interactions luminescent behavior remains a great challenge. We report two emitters (P1 P2) incorporating tetracoordinate boron. The P1 non‐conjugated D‐π‐A structure, exhibited red delayed fluorescence at 645 nm quantum yield 9.15 % aggregates. Notably, wavelength can be tuned from 418 to 588 different solvent. Similarly, P2 also adjusted by manipulating solvent fluorophore. Experimental characterization theoretical calculations indicate that B←N bond electronic fluorophore significantly regulate equilibrium electrostatic potential (ESP) intramolecular O⋅⋅⋅O P1, thereby modulating its wavelength. Additionally, these showed excellent fluoride ions detection. This work provides new insights into complex effects intermolecular on properties.

Language: Английский

Citations

10
Supramolecular nonconventional fluorescent material with tunable emission and electrothermal responsiveness DOI
Wentao Hao,

Can Ke,

X. PAN

et al.

Polymer, Journal Year: 2025, Volume and Issue: unknown, P. 128118 - 128118

Published: Feb. 1, 2025

Language: Английский

Citations

1
Frontiers in Fluorescence imaging: Tools for the In-Situ Sensing of Disease Biomarkers DOI
Lei Yang, Hongwei Hou, Jinghong Li

et al.

Journal of Materials Chemistry B, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 3, 2024

A comprehensive overview of recent advancements in fluorescence imaging techniques for situ sensing various biomarkers, emphasizing the transformative potential artificial intelligence shaping future bioimaging.

Language: Английский

Citations

4
Injectable Fluorescent Bottlebrush Polymers for Interventional Procedures and Biomedical Imaging DOI
Yichun Yuan,

Sophia Beilharz,

Heather R. Everson

et al.

Biomacromolecules, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 24, 2025

Injectable biomaterials play a vital role in modern medicine, offering tailored functionalities for diverse therapeutic and diagnostic applications. In ophthalmology, instance, viscoelastic materials are crucial procedures such as cataract surgery but often leave residues, increasing postoperative risks. This study introduces injectable fluorescent viscoelastics (FluoVs) synthesized via one-step controlled radical copolymerization of oligo(ethylene glycol) acrylate fluorescein acrylate. These bottlebrush-shaped polymers exhibit enhanced fluorescence intensity improved traceability facile removal postsurgery. To prevent aggregation, charged terpolymers were synthesized, ensuring intra- intermolecular electrostatic repulsion. Dynamic light scattering energy-conserved dissipative particle dynamics simulations revealed how the content monomer sequence affect hydrodynamic size these copolymers. Biocompatibility assessments showed that FluoVs maintained cell viability comparable to commercial hydroxypropyl methylcellulose nonfluorescent poly(oligo(ethylene acrylate) controls. The combine high intensity, low viscosity, excellent biocompatibility, intraoperative significant advancements ocular bioimaging

Language: Английский

Citations

0
Through-Space Charge Transfer Polybenzonorbornenes with Thermally Activated Delayed Fluorescence and Full-Color Piezochromism Property DOI
Qiang Li, Fangfang Huang,

Xiaofan Xu

et al.

Chemical Communications, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Through-space charge-transfer polybenzonorbornenes, consisting of a carbazole donor and dimesitylboron acceptor in the ortho-positions phenyl units on benzonorbornene repeating unit, have been developed, revealing efficient thermally activated delayed fluorescence emission full-colorpiezochromism.

Language: Английский

Citations

0
Multiscale Structural Analysis of Aggregation-Induced Emission Nanocrystals by Combining Electron and Confocal Microscopy DOI
Shitao Wu, Jianyu Zhang, Jing Zhang

et al.

Journal of the American Chemical Society, Journal Year: 2025, Volume and Issue: unknown

Published: April 7, 2025

Aggregation-induced emission (AIE) materials have attracted intense interest due to their remarkable luminescent properties and potential applications in biological medical fields. A comprehensive structural analysis from atomic-level micrometer-scale is essential for rationally designing AIE understanding structure-property relationships. However, this remains a challenge the lack of proper methods. Herein, we present strategy multiscale through combination electron confocal microscopy. One mechanically induced fluorescent material consisting chiral Au(I) complex was prepared studied. The correlation scanning optical microscope images reveals that fluorescence closely related anisotropy nanocrystals with strong signals on fracture {110} facets. Furthermore, instead growing large single crystals, crystal structures individual were directly resolved using three-dimensional diffraction (3D ED), highlighting changes molecular arrangement before after mechanical treatment. results provide experimental evidence previously proposed Restriction Intramolecular Rotation (RIR) mechanism.

Language: Английский

Citations

0
Full‐Color Tunable Fluorescent Polysiloxanes Driven by Structure Evolution and Aggregation From Amine–Aldehyde Reaction DOI Creative Commons
Cheng Huang, Xinyu Cao,

Xianpeng Fan

et al.

Aggregate, Journal Year: 2025, Volume and Issue: unknown

Published: April 22, 2025

ABSTRACT Nonconventional fluorescent materials, which are nonaromatic or consist of isolated aromatic systems, have attracted extensive attention because their aggregation‐induced emission properties. The mechanism nonconventional fluorescence remains incompletely understood, hindering the prediction and modulation its color. Achieving full‐color tunability in such particularly within elastomers, is highly challenging. Herein, cross‐linked polysiloxanes synthesized using aliphatic amino‐terminated polysiloxane glutaraldehyde, exhibiting that can be continuously tuned through thermal treatments a single material system. Thermal treatment enables precise control over structural evolution fluorophores from imines to 3‐(2‐piperidyl)pyridinium derivatives aggregation states. It continuous wide‐range Additionally, intramolecular intermolecular charge transfers novel unconventional fluorophore, derivatives, been identified, great significance for bathochromic fluorescence. Prepared all commercial chemicals, these show potential large‐scale production applications, especially as flexible light‐conversion layers solvent‐responsive smart materials. Furthermore, our research expected inspire innovation multiple dimensions.

Language: Английский

Citations

0
Nonconventional Luminescent Polymers: Emission Regulation and Applications DOI Open Access
Xiang Chen,

Yining Sun,

Wang Zhang Yuan

et al.

Macromolecular Chemistry and Physics, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 30, 2024

Abstract Nonconventional luminescent polymers have gained significant interest due to their outstanding water solubility, biocompatibility, solution‐processability, and scalability. Unlike traditional aromatic luminogens with extended π‐conjugation, distinctive photophysical properties arise from a mechanism known as clustering‐triggered emission (CTE). CTE involves the clustering of electron‐rich subunits, leading enhanced electron delocalization conformational rigidification, ultimately boosting photoluminescence (PL). Despite substantial advancements, challenges remain in optimizing efficiency PL tunability these polymers. This review delves into mechanism, examining recent advances regulating nonconventional The aim is uncover universal principles underlying mechanisms across diverse systems, providing theoretical foundation for further development potential applications materials fields such bioimaging, sensing, optoelectronics.

Language: Английский

Citations

3
Precise synthesis of three-arm star polymethacrylates with high emission efficiency both in solution and in the solid state DOI
Yang Dong,

Shuanglong Li,

Xinhai He

et al.

European Polymer Journal, Journal Year: 2024, Volume and Issue: 212, P. 113079 - 113079

Published: May 1, 2024

Language: Английский

Citations

1
Bilayer Asymmetric Hydrogels with Simultaneous Changes in Fluorescence Brightness and Shape Enabled by AIEgens DOI
Lili Zhang, Yanru Liu, Hui Liu

et al.

ACS Applied Polymer Materials, Journal Year: 2024, Volume and Issue: 6(12), P. 7320 - 7328

Published: June 18, 2024

The advancement of functional stimulus-responsive materials is highly important for achieving bionic artificial intelligence. Nevertheless, it difficult to fabricate hydrogels that exhibit both fluorescence brightness and shape variation simultaneously in response various stimuli. This work presents the design a fluorescent hydrogel responds stimuli layered asymmetric manner. pH layer consists poly(acrylamide-sodium methacrylate) [P(AAm-NaMA)], while T poly(acrylamide-N-isopropylacrylamide) [P(AAm-NIPAM)]. Furthermore, matrix contains water-soluble polymer, tetraphenylethylene-3-sulfopropyl methacrylate potassium salt (TPE-PSPMA) with aggregation-induced emission (AIE). At strong acidic pH, protonation PNaMA chains leads dehydration shrinkage network, resulting deformation toward side P(AAm-NaMA). When higher than lower critical solution temperature (LCST), PNIPAM has intramolecular interaction, causing network lose water shrink, then bends backward. contracts when exposed or which restricts internal rotation vibration TPE-PSPMA molecules. As result, exhibits an AIE effect, leading shift intensity. finding offers valuable insights development intelligent systems holds significant potential applications domains soft robotics smart wearable devices.

Language: Английский

Citations

1