A5056333531- Organic Light-Emitting Diodes Research
- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Luminescence and Fluorescent Materials
- Organic Electronics and Photovoltaics
- X-ray Spectroscopy and Fluorescence Analysis
- Ion-surface interactions and analysis
- Photochemistry and Electron Transfer Studies
- Electron and X-Ray Spectroscopy Techniques
- Molecular Junctions and Nanostructures
- Conducting polymers and applications
- Molecular Biology Techniques and Applications
- Nuclear materials and radiation effects
- Glass properties and applications
- Mineralogy and Gemology Studies
- Geological and Geochemical Analysis
Vidyasirimedhi Institute of Science and Technology
2018-2023
Chiang Mai University
2015-2019
Despite the success of thermally activated delayed fluorescent (TADF) materials in steering next generation organic light-emitting diodes (OLEDs), effective near infrared (NIR) TADF emitters are still very rare. Here, we present a simple and extremely high electron-deficient compound, 5,6-dicyano[2,1,3]benzothiadiazole (CNBz), as strong electron-accepting unit to develop sufficiently donor-acceptor (D-A) interaction for NIR emission. End-capping with electron-donating triphenylamine (TPA)...
Cyanophenyl substituted spiro[acridine-9,9′-fluorene]s featured with HLCT excited states yielded highly efficient non-doped OLEDs emissions in high-definition television standard blue color, CIE<italic>y</italic> ≤ 0.05, and CE<sub>max</sub>/EQE<sub>max</sub> of 6.54 cd A<sup>−1</sup>/4.63%.
Two D–A–D type emitters exhibited superior simple hole-transporting free solution-processed OLEDs with maximum EQE of 1.52%, low efficiency roll-off and radiance 4463 mW Sr<sup>−1</sup> m<sup>−2</sup>, which is one the best NIR-OLEDs.
A series of excited‐state intramolecular proton transfer (ESIPT)–aggregate‐induced emission (AIE) solid‐state fluorophores (TTHPI, PTHPI, and ATHPI) are reported as self‐absorption‐free emitters for electroluminescent (EL) devices. The molecules contain 2‐(2‐hydroxyphenyl)‐1,4,5‐triphenylimidazole an ESIPT core being double functionalized with AIE‐active luminogen tetraphenylethene hole‐transporting moiety (triphenylamine, N ‐(4‐phenyl)phenoxazine, or ‐(4‐phenyl)‐9,9‐dimethylacridine) to...
ESIPT derivatives functionalized with <italic>N</italic>-electron donating moieties show pure keto form emissions high solid-state fluorescence. As emitters, their OLEDs exhibit exceptionally brightness (41 292–44 820 cd m<sup>−2</sup>) and luminous efficiency (8.41–10.30 A<sup>−1</sup>).
Benzothiadiazole derivatives exhibit strong solid-state red fluorescence emission with bipolar properties.
Abstract A series of axially linked pyrene‐naphthalimide fluorophores ( N2Py , N4Py and BNPy ) bearing a different number 1,8‐naphthalimide units substituted on pyrene bis‐pyrene cores were designed synthesized using palladium‐catalyzed cross‐coupling reactions in stepwise synthetic manner. These molecules chemically characterized, their photoelectric properties explored by spectroscopy, electrochemical theoretical studies. They exhibited push‐pull characteristics with intense fluorescence...
Abstract Herein, donor (D)‐acceptor (A) type fluorophores ( TTBz and TTNz ) were designed synthesized with different acceptor units. The two units benzo[c][1,2,5]thiadiazole (Bz) naphtho[2,3‐c][1,2,5]thiadiazole (Nz) are asymmetrically functionalized triphenylamine (TPA) as a strong tetraphenylethylene (TPE) an aggregation‐induced emission (AIE)‐luminogen to realize combined AIE hybridized local charge transfer (HCLT) excited state features well long‐wavelength emission. Their HCLT...
Gemstone industry is one of the important Thailand local businesses. However, majority stones are not perfect but with defects or flaws. Glass-filling treatment has been a traditional method to rescue poor stones. Since glass-filled may contain toxic heavy metals, development new gemstone modification techniques necessitated. Ion beams have developed as novel technique modifying gemstones for gemological improvements and also being applied on remove metals. Therefore, before after ion beam...
While the cross sections of heavy ion beams at energy a few MeV and above have been measured reported, experimental data, especially those minor lines from uncommon materials, for lower-energy around 1 are lack. In this study, we used 1-MeV C-ion (83 keV/amu) PIXE (particle induced X-ray emission) to measure production Fe K-line, Nb, Ru Ce L-line, Ta M-line thin films materials. The literature-reported experimentally Kα section standard 2-MeV proton beam was as reference. data were compared...