Search Results - "Yasuda, Takuma"

Narrowband Emissive Thermally Activated Delayed Fluorescence Materials by Kim, Hyung Jong, Yasuda, Takuma

“…Organic thermally activated delayed fluorescence (TADF) materials have attracted significant research interest in the field of organic electronics because of…”
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Full-Color, Narrowband, and High-Efficiency Electroluminescence from Boron and Carbazole Embedded Polycyclic Heteroaromatics by Yang, Minlang, Park, In Seob, Yasuda, Takuma

“…Herein, we demonstrate that the strategic implementation of electron-accepting tricoordinate boron and electron-donating carbazole subunits into polycyclic…”
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High‐Performance Dibenzoheteraborin‐Based Thermally Activated Delayed Fluorescence Emitters: Molecular Architectonics for Concurrently Achieving Narrowband Emission and Efficient Triplet–Singlet Spin Conversion by Park, In Seob, Matsuo, Kyohei, Aizawa, Naoya, Yasuda, Takuma

“…Thermally activated delayed fluorescence (TADF) materials, which enable the full harvesting of singlet and triplet excited states for light emission, are…”
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High-Efficiency Blue Organic Light-Emitting Diodes Based on Thermally Activated Delayed Fluorescence from Phenoxaphosphine and Phenoxathiin Derivatives by Lee, Sae Youn, Adachi, Chihaya, Yasuda, Takuma

“…High‐efficiency blue thermally activated delayed fluorescence (TADF) molecules, consisting of phenoxaphosphine oxide and phenoxathiin dioxide as acceptor units…”
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Achieving Ultimate Narrowband and Ultrapure Blue Organic Light‐Emitting Diodes Based on Polycyclo‐Heteraborin Multi‐Resonance Delayed‐Fluorescence Emitters by Park, In Seob, Yang, Minlang, Shibata, Hiromoto, Amanokura, Natsuki, Yasuda, Takuma

“…To achieve an ultimate wide color gamut for ultrahigh‐definition displays, there is great demand for the development of organic light‐emitting diodes (OLEDs)…”
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Versatile Molecular Functionalization for Inhibiting Concentration Quenching of Thermally Activated Delayed Fluorescence by Lee, Jiyoung, Aizawa, Naoya, Numata, Masaki, Adachi, Chihaya, Yasuda, Takuma

“…Concentration quenching of thermally activated delayed fluorescence is found to be dominated by electron‐exchange interactions, as described by the Dexter…”
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Full-Color Delayed Fluorescence Materials Based on Wedge-Shaped Phthalonitriles and Dicyanopyrazines: Systematic Design, Tunable Photophysical Properties, and OLED Performance by Park, In Seob, Lee, Sae Youn, Adachi, Chihaya, Yasuda, Takuma

“…Purely organic light‐emitting materials, which can harvest both singlet and triplet excited states to offer high electron‐to‐photon conversion efficiencies,…”
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cis‐Quinacridone‐Based Delayed Fluorescence Emitters: Seemingly Old but Renewed Functional Luminogens by Min, Hyukgi, Park, In Seob, Yasuda, Takuma

“…Herein, we report a material design of linear cis‐quinacridone (cis‐QA) derivatives as delayed fluorescence luminogens. In contrast to the widely studied…”
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Aggregation-Induced Delayed Fluorescence Based on Donor/Acceptor-Tethered Janus Carborane Triads: Unique Photophysical Properties of Nondoped OLEDs by Furue, Ryuhei, Nishimoto, Takuro, Park, In Seob, Lee, Jiyoung, Yasuda, Takuma

“…Luminescent materials consisting of boron clusters, such as carboranes, have attracted immense interest in recent years. In this study, luminescent…”
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Pyrimidine-based twisted donor-acceptor delayed fluorescence molecules: a new universal platform for highly efficient blue electroluminescence by Park, In Seob, Komiyama, Hideaki, Yasuda, Takuma

“…Deep-blue emitters that can harvest both singlet and triplet excited states to give high electron-to-photon conversion efficiencies are highly desired for…”
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Wide‐Range Color Tuning of Narrowband Emission in Multi‐resonance Organoboron Delayed Fluorescence Materials through Rational Imine/Amine Functionalization by Yang, Minlang, Shikita, So, Min, Hyukgi, Park, In Seob, Shibata, Hiromoto, Amanokura, Natsuki, Yasuda, Takuma

“…Establishing a simple and versatile design strategy to finely modulate emission colors while retaining high luminescence efficiency and color purity remains an…”
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Thermally Activated Delayed Fluorescence Polymers for Efficient Solution-Processed Organic Light-Emitting Diodes by Lee, Sae Youn, Yasuda, Takuma, Komiyama, Hideaki, Lee, Jiyoung, Adachi, Chihaya

“…Thermally activated delayed fluorescence (TADF) π‐conjugated polymers are developed for solution‐processed TADF–OLEDs. Benzophenone‐based alternating…”
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Nearly 100% Internal Quantum Efficiency in Undoped Electroluminescent Devices Employing Pure Organic Emitters by Zhang, Qisheng, Tsang, Daniel, Kuwabara, Hirokazu, Hatae, Yasuhiro, Li, Bo, Takahashi, Takehiro, Lee, Sae Youn, Yasuda, Takuma, Adachi, Chihaya

“…The design of efficient and concentration‐insensitive metal‐free thermally activateddelayed fluorescence (TADF) materials is reported. Blue and green organic…”
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Luminous Butterflies: Efficient Exciton Harvesting by Benzophenone Derivatives for Full-Color Delayed Fluorescence OLEDs by Lee, Sae Youn, Yasuda, Takuma, Yang, Yu Seok, Zhang, Qisheng, Adachi, Chihaya

“…Butterfly‐shaped luminescent benzophenone derivatives with small energy gaps between their singlet and triplet excited states are used to achieve efficient…”
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High-Performance Organic Energy-Harvesting Devices and Modules for Self-Sustainable Power Generation under Ambient Indoor Lighting Environments by Arai, Ryota, Furukawa, Seiichi, Hidaka, Yu, Komiyama, Hideaki, Yasuda, Takuma

“…Organic photovoltaics (OPVs) that perform more efficiently under artificial indoor lighting conditions than they do under sunlight are attracting growing…”
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Spin-Dependent Exciton Funneling to a Dendritic Fluorophore Mediated by a Thermally Activated Delayed Fluorescence Material as an Exciton-Harvesting Host by Aizawa, Naoya, Shikita, So, Yasuda, Takuma

“…Thermally activated delayed fluorescence (TADF) materials generate energetically equivalent spin-singlet and spin-triplet excited states. In the presence of an…”
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Thermal equilibration between singlet and triplet excited states in organic fluorophore for submicrosecond delayed fluorescence by Aizawa, Naoya, Matsumoto, Akinobu, Yasuda, Takuma

“…In any complex molecular system, electronic excited states with different spin multiplicities can be described via a simple statistical thermodynamic formalism…”
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High-efficiency organic light-emitting diodes utilizing thermally activated delayed fluorescence from triazine-based donor–acceptor hybrid molecules by Youn Lee, Sae, Yasuda, Takuma, Nomura, Hiroko, Adachi, Chihaya

“…We have designed and synthesized a high-efficiency purely organic luminescent material, 2,4-bis{3-(9 H-carbazol-9-yl)-9 H-carbazol-9-yl}-6-ph…”
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Efficiency Enhancement of Organic Light-Emitting Diodes Incorporating a Highly Oriented Thermally Activated Delayed Fluorescence Emitter by Mayr, Christian, Lee, Sae Youn, Schmidt, Tobias D., Yasuda, Takuma, Adachi, Chihaya, Brütting, Wolfgang

“…An organic light‐emitting diode (OLED) with the blue emitter CC2TA showing thermally activated delayed fluorescence (TADF) is presented exhibiting an external…”
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Effects of nutrient metabolism on pancreatic β-cell mass and function: Recent findings by Yasuda, Takuma, Harada, Norio

“…This article summarizes recent findings on the effects of nutrients on pancreatic ß-cell mass and function. Further studies are expected to facilitate the…”
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