A5012745584- Luminescence and Fluorescent Materials
- Organic Light-Emitting Diodes Research
- Molecular Sensors and Ion Detection
- Organic Electronics and Photovoltaics
- Click Chemistry and Applications
- Nanoplatforms for cancer theranostics
- Conducting polymers and applications
- Dendrimers and Hyperbranched Polymers
- Synthesis and Properties of Aromatic Compounds
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Chemical Synthesis and Analysis
- Advanced biosensing and bioanalysis techniques
- Porphyrin and Phthalocyanine Chemistry
- Polydiacetylene-based materials and applications
- Carbon dioxide utilization in catalysis
- Catalytic Cross-Coupling Reactions
- Synthesis and properties of polymers
- Photochromic and Fluorescence Chemistry
- Supramolecular Chemistry and Complexes
- Organoboron and organosilicon chemistry
- Covalent Organic Framework Applications
- Fluorine in Organic Chemistry
- Crystallography and molecular interactions
- Synthetic Organic Chemistry Methods
South China University of Technology
2016-2025
State Key Laboratory of Luminescent Materials and Devices
2016-2025
National University of Singapore
2004-2025
University of Hong Kong
2013-2022
Hong Kong University of Science and Technology
2011-2022
Society of Automotive Engineers International
2020-2021
Key Laboratory of Guangdong Province
2019-2021
Guangzhou Design Institute
2020
Jilin University
2006-2019
Central China Normal University
2019
It has been difficult to decipher the mechanistic issue whether E/Z isomerization is involved in aggregation-induced emission (AIE) process of a tetraphenylethene (TPE) derivative, due difficulty synthesis its pure E and Z conformers. In this work, stereoisomers TPE derivative named 1,2-bis{4-[1-(6-phenoxyhexyl)-4-(1,2,3-triazol)yl]phenyl}-1,2-diphenylethene (BPHTATPE) are successfully synthesized. Both isomers show remarkable AIE effect (αAIE ≥ 322) high fluorescence quantum yield solid...
A conceptually new "light-up" biosensor with a high specificity for d-glucose (Glu) in aqueous media has been developed. The emission from tetraphenylethene (TPE)-cored diboronic acid (1) was greatly boosted when the fluorogen oligomerized Glu because of restriction intramolecular rotations aryl rotors TPE by formation oligomer. Little change light observed 1 mixed d-fructose, d-galactose, or d-mannose, as these saccharides are unable to oligomerize fluorogen.
Nonemissive tetraphenylethene (TPE) 1 and its diphenylated derivative 2 were induced to emit intensely by aggregate formation. Crystalline aggregates of the dyes emitted bluer lights than their amorphous counterparts. The emissions TPE could be switched off on continuously reversibly wetting dewetting with solvent vapors, respectively, manifesting ability optically sense volatile organic compounds. light-emitting diodes fabricated from turned at ∼2.9 ∼5V blue maximum luminance ∼1800...
Luminescent materials with thermally activated delayed fluorescence (TADF) can harvest singlet and triplet excitons to afford high electroluminescence (EL) efficiencies for organic light‐emitting diodes (OLEDs). However, TADF emitters generally have be dispersed into host matrices suppress emission quenching and/or exciton annihilation, most doped OLEDs of encounter a thorny problem swift efficiency roll‐off as luminance increases. To address this issue, in study, new tailor‐made luminogen...
Photoluminescence of simple arylbenzenes with ready synthetic accessibility is enhanced by two orders magnitude through aggregate formation; viscosity and temperature effects indicate that the emission enhancement due to restriction their intramolecular rotations in solid state.
Luminescent materials with aggregation-induced emission (AIE) property have attracted considerable interests for their promising applications in light-emitting and display devices fluorescent probes chemo- biosensors. Tetraphenylethene (TPE) derivatives are the most attractive species notable AIE performance, facile synthesis, flexible structure modification. To study effects of donor acceptor substitutions extend TPE-based materials, three TPE kindred, TTPE, BTPEFN, BATPEFN, employed. TTPE...
(4-Biphenylyl)phenyldibenzofulvene is weakly luminescent in the amorphous phase but becomes highly emissive upon crystallization; this unusual crystallization-induced emission enhancement effect allows its to be repeatedly switched between dark and bright states by fuming-heating heating-cooling processes.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMaterials and mechanisms in electrorheologyHarry Block, J. P. Kelly, A. Qin, T. WatsonCite this: Langmuir 1990, 6, 1, 6–14Publication Date (Print):January 1990Publication History Published online1 May 2002Published inissue 1 January 1990https://pubs.acs.org/doi/10.1021/la00091a002https://doi.org/10.1021/la00091a002research-articleACS PublicationsRequest reuse permissionsArticle Views737Altmetric-Citations367LEARN ABOUT THESE METRICSArticle Views...
Abstract Development of highly efficient circularly polarized organic light‐emitting diodes (CPOLEDs) has gained increasing interest as they show improved luminous efficiency and high contract 3D images in OLED displays. In this work, a series binaphthalene‐containing luminogenic enantiomers with aggregation‐induced emission (AIE) delayed fluorescence properties is designed synthesized. These molecules can emit from green to red light depending on the solvent polarity due twisted...
Abstract The synthesis of functionalized siloles has been a challenge because the incompatibility polar functional groups with reactive intermediates in conventional protocols for silole synthesis. In this work, synthetic route functionalization is elaborated, through which series are successfully prepared. Whereas light emissions traditional luminophores often quenched by aggregation, most show an exactly opposite phenomenon aggregation‐induced emission (AIE). nonemissive when dissolved...
Hyperbranched polytriazoles with spring-like architectures exhibit the feature of aggregation-induced emission (AIE) due to high compressibility polymer spheres from solution aggregate. Thanks their AIE effect, nanoaggregates can detect explosives superamplification effect.
Research on aggregation-induced emission (AIE) has been a hot topic. Due to enthusiastic efforts by many researchers, hundreds of AIE luminogens (AIEgens) have generated which were mainly based archetypal silole, tetraphenylethene, distyrylanthracene, triphenylethene, and tetraphenyl-1,4-butadiene, etc. To enlarge the family AIEgens enrich their functions, new are in high demand. In this work, we report kind AIEgen tetraphenylpyrazine (TPP), could be readily prepared under mild reaction...
Chemical transformations of small molecules have served as a rich source reactions for the development new polymerization processes, and "click" reaction has potential to become powerful technique. We herein give brief account research efforts devoted click into process. Remarkable progresses been made in recent years exploration metal-mediated metal-free systems syntheses linear hyperbranched polytriazoles with regioregular molecular structures advanced functional properties. also discuss...
π-Bonds connected with aromatic rings were generally believed as the standard structures for constructing highly efficient fluorophores. Materials without these typical structures, however, exhibited only low fluorescence quantum yields and emitted in ultraviolet spectral region. In this work, three molecules, namely bis(2,4,5-trimethylphenyl)methane, 1,1,2,2-tetrakis(2,4,5-trimethylphenyl)ethane, 1,1,2,2-tetraphenylethane, nonconjugated isolated phenyl synthesized their photophysical...
Amines play vital roles in agricultural, pharmaceutical, and food industries, but volatile amine vapors are serious threats to human health. Previously reported fluorescent sensors for vapor detection usually suffer from aggregation-caused quenching (ACQ) effect need be dispersed solution or matrix materials. Herein, based on the fluorogen of 2-(2-hydroxyphenyl)quinazolin-4(3H)-one (HPQ) with aggregation-induced emission (AIE) properties, we have developed a sensor HPQ-Ac light-up through...
Aggregation-induced emission (AIE) materials have excellent solid-state by suppressing concentration quenching and exciton annihilation, while thermally activated delayed fluorescence (TADF) are able to fully utilize electrogenerated singlet triplet excitons. The collaboration of AIE TADF should be a rational strategy design novel robust luminescent materials. Herein, two new with both prominent properties developed based on central benzoyl acceptor core different donor units. Their crystal...
New, biocompatible materials with favorable antibacterial activity are highly desirable. In this work, we develop a unique conjugated polymer featuring aggregation-induced emission (AIE) for reliable bacterial eradication. Thanks to the AIE and donor-π-acceptor structure, shows high reactive oxygen species (ROS)-generation ability compared low-mass model compound common photosensitizer Chlorin E6. Moreover, selective binding of pathogenic microorganisms over mammalian cells was found,...
In this contribution, we propose natural resources as a new source to acquire biocompatible AIEgens.
Abstract Aggregation‐induced emission (AIE) is commonly observed for propeller‐like luminogens with aromatic rotors and stators. Herein, we report that a coumarin derivative containing seven‐membered aliphatic ring (CD‐7) but no showed typical AIE characteristics, whereas its analogue five‐membered (CD‐5) exhibited an opposite aggregation‐caused quenching (ACQ) effect. Experimental theoretical results revealed large in CD‐7 weakens structural rigidity promotes out‐of‐plane twisting of the...
The aggregation‐induced emission (AIE) phenomenon is important in organic light‐emitting diodes (OLEDs), for it can potentially solve the aggregation‐caused quenching problem. However, performance of AIE fluorophor‐based OLEDs (AIE OLEDs) unsatisfactory, particularly deep‐blue devices (CIEy < 0.15). Here, by enhancing device engineering, a OLED exhibits low voltage (i.e., 2.75 V at 1 cd m −2 ), high luminance (17 721 efficiency (4.3 lm W −1 and roll‐off (3.6 1000 which best OLED. Then,...
Efficient synthesis of poly(enamine)s has been a great challenge because their poor stability, solubility, and low molecular weights. In this work, spontaneous amino-yne click polymerization for the efficient preparation was established, which could proceed with 100% atom efficiency under very mild conditions without any external catalyst. Through systematic optimization reaction conditions, several soluble thermally stable poly(β-aminoacrylate)s high weights (Mw up to 64400) well-defined...