A5015512529- Organic Light-Emitting Diodes Research
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Organic Electronics and Photovoltaics
- Luminescence and Fluorescent Materials
- Conducting polymers and applications
- Synthesis and Properties of Aromatic Compounds
- Molecular Junctions and Nanostructures
- Quantum Dots Synthesis And Properties
- Fullerene Chemistry and Applications
- Luminescence Properties of Advanced Materials
- Click Chemistry and Applications
- N-Heterocyclic Carbenes in Organic and Inorganic Chemistry
- Flame retardant materials and properties
- Perovskite Materials and Applications
- Advanced Photocatalysis Techniques
- Boron and Carbon Nanomaterials Research
- Optical and Acousto-Optic Technologies
- Surface Chemistry and Catalysis
- Surface and Thin Film Phenomena
- TiO2 Photocatalysis and Solar Cells
- Radiation Detection and Scintillator Technologies
- Photochromic and Fluorescence Chemistry
- Millimeter-Wave Propagation and Modeling
- Photorefractive and Nonlinear Optics
University of Chinese Academy of Sciences
2025
National Taiwan University
2006-2012
Nagoya University
2009
The bipolar molecule CPhBzIm exhibits an excellent solid state photoluminescence quantum yield (ΦPL = 69%), triplet energy (ET 2.48 eV), and charge transport ability (μh ≈ μe 10−6–10−5 cm2 V−1 s−1). We have used it to fabricate a non-doped deep-blue organic light emitting diode (OLED) exhibiting promising performance [ηext 3%; CIE (0.16, 0.05)] serve as host material for yellow–green phosphorescent OLED 19.2%; (0.42, 0.56)]. Exploiting these dual roles, we in simple singly doped,...
We have synthesized a series of novel coplanar chromophores in which heteroarenes, namely, thiophene, benzothiophene, and carbazole, were fused to neighboring phenylene ring(s) through intramolecular annulation via sp(3)-hybridized carbon atoms bearing two p-tolyl groups as peripheral substituents. The molecular configurations the pi-conjugated backbones determined by X-ray crystallographic analysis; heteroarene-fused frameworks these molecules exhibit nearly conformations. [structure: see text]
Recently bipolar phosphorescent host materials have attracted wide attention since they can achieve better charge balance and hence device performance. In this work, we report the synthesis physical properties of a novel material containing dimesityl borane/carbazole hybrid, CMesB. With high triplet energy, CMesB is considered promising universal has been applied to OLEDs various colors. Red/green/blue/white (RGBW) based on all show external quantum efficiencies (20.7% for red, 20.0% green,...
p-Tolyl-substituted ladder-type oligo(p-phenylene)s containing three, four, and five phenylene rings were readily synthesized. The uniform aryl substitution of these systems allowed us to determine the coplanarity π-conjugated backbones crystallographically. intramolecular annulations eliminate almost all conformational disorder enhance degree π-conjugation backbones, resulting in significant red shifts absorption emission maxima lower oxidation potentials higher homologues.
We have prepared a highly efficient non-doped green organic light-emitting diode (OLED) incorporating novel 9,9-diarylfluorene-terminated 2,1,3-benzothiadiazole emitter (DFBTA), which exhibits an excellent solid state photoluminescence quantum yield (81%), and new triaryldiamines (DPAInT2, DPAInF) with high hole mobility derived from rigid coplanar cores. The optimal device: ITO/DPAInT2/DPAInF/TCTA/DFBTA/Alq3/LiF/Al displayed impressive device characteristics, including maximum external...
A novel bipolar molecule CNBzIm comprised of electron-donating carbazole and electron-accepting phenylbenzimidazole is designed, synthesized characterized for RGB phosphorescent organic light emitting diodes (PhOLEDs). exhibits promising properties such as high triplet energy (ET = 2.71 eV) due to disrupted π-conjugation, balanced charge transport ability (μh ≈ μe 10−5 cm2 V−1s−1), morphological stability (Tg 185 °C). PhOLEDs adopted a host respectively doped with Os(bpftz)2(PPh2Me)2,...
A highly efficient red electrophosphorescent device exhibited saturated emission and an impressive external quantum efficiency [ηext = 10.8% (ph/el)] with simple configuration of doping iridium complex (Mpq2Iracac) into a novel ambipolar spiro-configured donor–acceptor host material (D2ACN) has been developed.
A suitable triplet energy level and high morphological stability hole mobility make indenofluorene an effective host material for green phosphorescent OLEDs.
A bifluorene analogue, T2N, containing a pyridyl moiety serves as both host and an efficient electron-transporting material that is compatible with various heavy metal-containing red (Ir, Ru, Os, Pt) green (Ir) phosphors for highly phosphorescent OLEDs possessing simple device architectures.
Modulated charge separation has been investigated by surface photovoltage spectroscopy in the fixed capacitor arrangement for four different fluorene compounds adsorbed from highly diluted solutions at ultra-thin nanoporous TiO2 (np-TiO2), Au and ITO surfaces. Donor (–N(C6H5)2) acceptor moieties (–CN, –COOH) were linked or spirobisfluorene cores chain length changed introducing thiophene. electron injection intramolecular transport separated directed adsorption of spiro surfaces...
Abstract Derivatives of 5,7‐dichloro‐2‐styrylquinoline ( 1 ), modified at position 8 quinoline moiety with a methyl ether 4 , DCSQM) or acetate 5 DCSQA), were synthesized and investigated. Both compounds exhibited high thermal stability Td > 320 °C). The UV‐vis absorption DCSQM DCSQA varied only slightly in different solvents, whereas the emission spectra showed pronounced red shifts increasing solvent polarity, suggesting intramolecular charge transfer character state. Compounds can emit...
Molecules with donor (diphenylamine) and acceptor moieties (dicyano or cyanoacrylic acid moieties) were linked by fluorene spirobisfluorene cores the chain length has been changed introducing a thiophene group between diphenylamine. Four different kinds of compounds adsorbed from highly diluted solutions at ultra-thin nanoporous TiO2 (np-TiO2), Au ITO surfaces. Charge separation investigated surface photovoltage spectroscopy in fixed capacitor Kelvin probe arrangements vacuum. Striking...
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at glance that was extracted from about 200 leading journals. To access of an article which published elsewhere, please select “Full Text” option. The original trackable via the “References”
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at glance that was extracted from about 200 leading journals. To access of an article which published elsewhere, please select “Full Text” option. The original trackable via the “References”
The authors report a bench-stable Pd(II) catalyst for the functionalization of fullerene using arylboronic acids. They found activity was increased through addition nitrogen-based bidentate ligands and acid. optimal (shown above) gave yield 61% selectivity 95% monophenylation product at 60 ˚C. reaction successful with variety both electron-rich electron- poor
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at glance that was extracted from about 200 leading journals. To access Abstract, please click on HTML or PDF.