A5063509403- Organic Light-Emitting Diodes Research
- Organic Electronics and Photovoltaics
- Luminescence and Fluorescent Materials
- Conducting polymers and applications
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Perovskite Materials and Applications
- Synthesis and properties of polymers
- Green IT and Sustainability
- Dendrimers and Hyperbranched Polymers
- Quantum Dots Synthesis And Properties
- Catalytic Cross-Coupling Reactions
- Polymer composites and self-healing
- N-Heterocyclic Carbenes in Organic and Inorganic Chemistry
- Nanoplatforms for cancer theranostics
- Molecular Junctions and Nanostructures
- Advanced Sensor and Energy Harvesting Materials
- Image and Video Quality Assessment
- Photoreceptor and optogenetics research
- Advanced Materials and Mechanics
- Advanced Nanomaterials in Catalysis
- Micro and Nano Robotics
- Supramolecular Self-Assembly in Materials
- Nanocluster Synthesis and Applications
- Analytical Chemistry and Sensors
Hainan University
2022-2025
State Key Laboratory of Polymer Physics and Chemistry
2015-2024
Changchun Institute of Applied Chemistry
2015-2024
Chinese Academy of Sciences
2015-2024
University of Science and Technology of China
2022
University of Chinese Academy of Sciences
2012
We demonstrate novel molecular design for thermally activated delayed fluorescence (TADF) polymers based on a nonconjugated polyethylene backbone with through-space charge transfer effect between pendant electron donor (D) and acceptor (A) units. Different from conventional conjugated D–A through-bond effect, the architecture avoids direct conjugation D A units, enabling blue emission. Meanwhile, spatial π–π interaction physically separated units results in both small singlet–triplet energy...
Through-space charge transfer polymers (TSCT polymers) that contain a non-conjugated polystyrene backbone and spatially separated donor acceptor units for solution-processed OLEDs with full-color white emission is reported. By tuning the strength between acceptors different electron-accepting ability, color spanning from deep blue to red can be achieved. incorporating two kinds of donor/acceptor pairs in one polymer create duplex through-space charge-transfer channels, yellow simultaneously...
On the basis of a fluorinated poly(arylene ether phosphine oxide) backbone with both high triplet energy and appropriate HOMO/LUMO levels, highly efficient all-phosphorescent single white-emitting polymers were designed successfully synthesized via "two-step addition" strategy. Simultaneous blue yellow emissions achieved to generate white electroluminescence promising luminous efficiency as 18.4 cd/A (8.5 lm/W, 7.1%) CIE coordinates (0.31, 0.43).
Through-space charge transfer hexaarylbenzene dendrimers containing circularly-arrayed electron donors and acceptors exhibit thermally activated delayed fluorescence aggregation-induced emission effects, giving EQE of 14.2% for solution-processed OLEDs.
Through-space charge transfer polynorbornenes with fixed and controllable spatial alignment of donor acceptor in edge-to-face/face-to-face stacking patterns are developed for achieving high-efficiency blue thermally activated delayed fluorescence (TADF). The is realized by using the cis, exo-configuration norbornene to confine close proximity, utilizing orthogonal dendritic structures donors provide either perpendicular or parallel motif relative acceptors. Compared edge-to-face...
Abstract Through‐space charge transfer (TSCT) polymers are an attractive class of luminescent with spatial donor/acceptor architecture and thermally activated delayed fluorescence effect, different from conventional conjugated donor‐acceptor structure through‐bond emission. Their emission comes the intramolecular by through‐space pathway because donor acceptor segments spatially proximate to each other in repeating unit but physically separated nonconjugated polymer backbone. In this review,...
Additives play a critical role for efficient perovskite light-emitting diodes (PeLEDs). Here, we report novel phosphonate/phosphine oxide dyad molecular additive (PE-TPPO), with unique dual roles of passivating defects and enhancing carrier radiative recombination, to boost the device efficiency metal-halide perovskites. In addition defect passivation effect phosphine group enhance photoluminescence intensity homogeneity film, phosphonate strong electron affinity can capture injected...
Abstract π‐Stacked dendrimers consisting of cofacially aligned donors and acceptors are developed by introducing three dendritic teracridan with orthogonal configuration triazine in periphery hexaphenylbenzene skeleton. The structure not only make their outer acridan segments approaching to acceptor close distance, but also fix donor face‐to‐face alignment, leading through‐space charge transfer emission thermally activated delayed fluorescence (TADF) effect. By regulating strength via...
Comprehensive Summary Two novel boron (B), sulfur (S), nitrogen (N)‐doped polycyclic aromatic hydrocarbon multiple resonance emitters (DBNS and DBNS‐ t Bu) are designed synthesized for narrowband red emission by embedding two pairs of S N atoms B in para ‐positions central benzene rings within a tridecacyclic skeleton to form donor‐π‐donor (D‐π‐D) acceptor‐π‐acceptor (A‐π‐A) structures, which not only exhibit maximum at 641 nm with small full width half 39 nm, but also combine high...
Two kinds of boron- (B), selenium- (Se), and nitrogen-doped (N) polycyclic aromatic hydrocarbon (PAH) emitters (Cz-BSeN DCz-BSeN) with a multiresonance effect are developed for narrowband blue emission by embedding boron as an electron-deficient atom selenium nitrogen electron-donating atoms into benzo[
A novel, bipolar polymeric host based on a poly(aryl ether) containing phosphine oxide units in the electron-transporting main chain and carbazole hole-transporting side chains is designed synthesized for blue electrophosphorescence. This possesses character high ET of 2.96 eV. The efficiency blue-emitting PhPLEDs this doped with FIrpic reaches 23.3 cd A−1 (EQE = 10.8%). Detailed facts importance to specialist readers are published as "Supporting Information". Such documents peer-reviewed,...
In view of the tolerance F atoms in FIrpic to nucleophilic aromatic substitution polymerization, an activated fluorinated poly(arylene ether phosphine oxide) backbone is used construct novel blue electrophosphorescent polymers containing as emitter, because they can be synthesized under a milder temperature 120 °C. Compared with counterparts prepared at high (165 °C), unexpected bathochromic shift successfully avoided, and state-of-art luminous efficiency 19.4 cd A–1 achieved. The comparable...
Two boron-, sulfur- and nitrogen-doped polycyclic aromatic hydrocarbon multiple resonance thermally activated delayed fluorescence emitters with high photoluminescent quantum efficiency (88 %) rapid reverse intersystem crossing (kRISC = 1.0×105 s-1 ) are designed synthesized, enabling efficient narrow-band blue electroluminescence at 473 nm full width half maximum of 29 external 22.0 %, which provides an avenue to expand the structure library for approach regulate their emission properties.
Abstract Through‐space charge transfer polymers (TSCT polymers) that contain a non‐conjugated polystyrene backbone and spatially separated donor acceptor units for solution‐processed OLEDs with full‐color white emission is reported. By tuning the strength between acceptors different electron‐accepting ability, color spanning from deep blue to red can be achieved. incorporating two kinds of donor/acceptor pairs in one polymer create duplex through‐space charge‐transfer channels, yellow...
Multiple resonance emitters containing spirofluorene-locked carbazole moieties and a boron, nitrogen-doped aromatic skeleton exhibit efficient narrowband green electroluminescence by solution process.
Instead of conjugated dibenzothiophene-S,S-dioxide (DBTSO), we have introduced nonconjugated diphenylsulfone (DPSO) as the electron-deficient unit into main chain poly(spirobifluorene)s (PSFs). Because weaker electron affinity DPSO relative to DBTSO, charge transfer from pendant 2,3,6,7-tetraoctyloxyfluorene can be effectively prevented. Consequently, resultant polymers containing moiety show pure blue emissions, which is different DBTSO-based PSFs that exhibit undesired green emissions....
Starburst TCTA-based deep-blue emitters are developed, whose solution-processed undoped device performance increases gradually with increasing oligophenyl length.
Self-host functional iridium dendrimers with <italic>N</italic>-phenylcarbazole-based polyether dendrons.