Search results for: Dongyang Chen

Items from 1 to 20 out of 80 results

article

Design and numerical study of a bidirectional acoustic microfluidic pump enabled by microcantilever arrays

Dongyang Chen, Lican Zheng, Yu Xie, Chen Zhang, more

ELECTROPHORESIS > 45 > 13-14 > 1130 - 1141

Microfluidics offers a versatile and promising platform for various applications in biomedical and other fields, boasting cost‐effectiveness, rapid analysis time, and a compact equipment footprint. However, achieving controlled and versatile microfluidic motion within implantable devices presents a significant challenge. In this study, we propose a novel bidirectional micro‐pump design that leverages...

article

Mesogenic Groups Control the Emitter Orientation in Multi‐Resonance TADF Emitter Films**

Dongyang Chen, Francisco Tenopala‐Carmona, Julius A. Knöller, Andreas Mischok, more

Angewandte Chemie International Edition > 62 > 16 > n/a - n/a

The use of thermally activated delayed fluorescence (TADF) emitters and emitters that show preferential horizontal orientation of their transition dipole moment (TDM) are two emerging strategies to enhance the efficiency of OLEDs. We present the first example of a liquid crystalline multi‐resonance TADF (MR‐TADF) emitter, DiKTa‐LC. The compound possesses a nematic liquid crystalline phase between...

article

Mesogenic Groups Control the Emitter Orientation in Multi‐Resonance TADF Emitter Films**

Dongyang Chen, Francisco Tenopala‐Carmona, Julius A. Knöller, Andreas Mischok, more

Angewandte Chemie > 135 > 16 > n/a - n/a

article

Quantifying properties (K) and ( $μ^{s}$ )

Dongyang Chen, Tomasz Kania, Yingbin Ruan

Mathematische Nachrichten > 296 > 3 > 996 - 1012

A Banach space X has property (K), whenever every weak* null sequence in the dual space admits a convex block subsequence

{(f_{n})}_{n = 1}^{\infty}

so that

⟨ f_{n}, x_{n} ⟩ \to 0

n \to \infty

for every weakly null sequence

{(x_{n})}_{n = 1}^{\infty}

in X; X has property

(μ^{s})

if every weak* null sequence in

X^{*}

admits a subsequence...

article

Planar and Rigid Pyrazine‐Based TADF Emitter for Deep Blue Bright Organic Light‐Emitting Diodes

Pachaiyappan Rajamalli, Dongyang Chen, Subeesh Madayanad Suresh, Youichi Tsuchiya, more

European Journal of Organic Chemistry > 2021 > 16 > 2285 - 2293

Two blue thermally activated delayed fluorescence (TADF) emitters bearing di‐tert‐butyl carbazoles as the electron donor groups and pyrazine (DTCz‐Pz) or dipyrazine (DTCz‐Pz) as the electron acceptor are presented. The DFT calculations predict DTCz‐Pz and DTCz‐DPz to possess high S₁ energies (3.19 eV and 3.08 eV, respectively), and relatively large ΔE_ST values (0.52 eV and 0.56 eV, respectively)....

article

Front Cover: Planar and Rigid Pyrazine‐Based TADF Emitter for Deep Blue Bright Organic Light‐Emitting Diodes (Eur. J. Org. Chem. 16/2021)

Pachaiyappan Rajamalli, Dongyang Chen, Subeesh Madayanad Suresh, Youichi Tsuchiya, more

European Journal of Organic Chemistry > 2021 > 16 > 2253 - 2253

The Front Cover shows the multi‐layered OLED stacks at the bottom right with the two emitters, DTCz‐Pz and DTCz‐DPz, contained within the emission layer. Bright blue light exits from the emission layers of the OLEDs and fades to the background, which illustrates that both molecules are pyrazine‐based blue TADF emitters. The building is St Salvator′s Quad, the historical heart of the University of...

article

Mild C−F Activation in Perfluorinated Arenes through Photosensitized Insertion of Isonitriles at 350 nm

Frauke Weidlich, Naoto Esumi, Dongyang Chen, Christian Mück‐Lichtenfeld, more

Advanced Synthesis & Catalysis > 362 > 2 > 376 - 383

Fluorinated compounds have become important in the fields of agrochemical industry, pharmaceutical chemistry and materials sciences. Accordingly, various methods for their preparation have been developed in the past. Fluorinated compounds can be accessed via conjugation with fluorinated building blocks, via C−H fluorination or via selective activation of perfluorinated compounds to give the partially...

article

Optical detection system for laser cooling and precision laser spectroscopy of relativistic highly charged ions at the CSRe

Hanbing Wang, Weiqiang Wen, Zhongkui Huang, Dacheng Zhang, more

X‐Ray Spectrometry > 49 > 1 > 138 - 142

Laser cooling and precision laser spectroscopy experiments of relativistic highly charged ions are being prepared at the heavy‐ion experimental cooler storage ring (CSRe). Optical detection of fluorescence photons, emitted from the laser‐excited ions, is extremely important for both powerful methods. In this paper, we briefly report on the current status of the existing optical detectors and also...

article

HMEJ-mediated efficient site-specific gene integration in chicken cells

Long Xie, Juanjuan Sun, Lifen Mo, Tianpeng Xu, more

Journal of Biological Engineering > 2019 > 13 > 1 > 1-10

Background The production of transgenic chicken cells holds great promise for several diverse areas, including developmental biology and biomedical research. To this end, site-specific gene integration has been an attractive strategy for generating transgenic chicken cell lines and has been successfully adopted for inserting desired genes and regulating specific gene expression patterns. However,...

article

Quantitative Bessaga–Pełczyński property and quantitative Rosenthal property

Dongyang Chen, Yingbin Ruan

Mathematische Nachrichten > 292 > 8 > 1685 - 1700

We prove that c₀ and

C (K)

, where K is a dispersed compact Hausdorff space, enjoy a quantitative version of the Bessaga–Pełczyński property. We also prove that l₁ possesses a quantitative version of the Pełczyński property. Finally, we show that

L_{1} (μ)

has a quantitative version of the Rosenthal property for any finite measure μ.

article

Cyclostratigraphic Calibration of the Upper Ordovician (Sandbian–Katian) Pagoda and Linhsiang Formations in the Yichang Area, South China

Yangyang ZHONG, Dongyang CHEN, Junxuan FAN, Huaichun WU, more

Acta Geologica Sinica ‐ English Edition > 93 > S3 > 177 - 180

article

Geological Panorama Database: Digitizing and Visualizing the Geological Outcrops

Yiying DENG, Dongyang CHEN, Junxuan FAN, Yukun SHI, more

Acta Geologica Sinica ‐ English Edition > 93 > S3 > 11 - 13

article

Simultaneous Determination of 24 Polycyclic Aromatic Hydrocarbons in Oils by Gas Chromatography-Mass Spectrometry Using an Improved Clean-up Procedure

Hua Zhou, Xianglun Wu, Dongyang Chen, Huaming Zhu, more

Food Analytical Methods > 2019 > 12 > 9 > 1957-1963

An improved gas chromatography-mass spectrometry (GC-MS) method was developed for the simultaneous determination of 24 polycyclic aromatic hydrocarbons (PAHs) in edible oils. A novel purification procedure based on the coupling double cartridges (molecular imprinting polymer (MIP) cartridge and PAHs special cartridge) was applied. Under the optimized conditions, the method presented excellent linearity...

article

Laser cooling and precision laser spectroscopy of highly charged ions at the storage ring CSRe and the future HIAF

Weiqiang Wen, Hanbing Wang, Zhongkui Huang, Dacheng Zhang, more

Hyperfine Interactions > 2019 > 240 > 1 > 1-10

Laser cooling and precision laser spectroscopy of highly charged ions are considered as frontiers of atomic physics research at heavy ion storage rings. A brief overview of the fundamentals of these powerful methods, applied to relativistic stored ion beams, is given. Preliminary results from laser cooling of lithium-like ¹⁶O⁵⁺ ion beams at a relativistic energy of 275.7 MeV/u at the heavy-ion storage...

article

Multinozzle high efficiency electrospinning with the constraint of sheath gas

Gaofeng Zheng, Jiaxin Jiang, Dongyang Chen, Juan Liu, more

Journal of Applied Polymer Science > 136 > 22 > n/a - n/a

In this article, sheath gas is introduced to design a novel multinozzle spinneret to improve the productivity of uniform nanofibers. The sheath gas in laminar flow provides an additional stretching force to overcome the mutual interferences among the nozzles, thus the simultaneous ejection of multiple jets is promoted. In addition, the sheath gas also contributes to the decrease of the diameter and...

article

Selectivity enhancement of quaternized poly(arylene ether ketone) membranes by ion segregation for vanadium redox flow batteries

Yu Chen, Zhongcheng Liu, Meijin Lin, Qilang Lin, more

Science China Chemistry > 2019 > 62 > 4 > 479-490

Quaternary ammonium densely functionalized octa-benzylmethyl-containing poly(arylene ether ketone)s (QA-OMPAEKs) with ion exchange capacities (IECs) ranging from 1.23 to 2.21 mmol g⁻¹ were synthesized from: (1) Ullmann coupling extension of tetra-benzylmethyl-containing bisphenol A; (2) condensation polymerization with activated dihalide in the presence of K₂CO₃; (3) selective bromination using N-bromosuccinimide;...

article

Densely quaternized anion exchange membranes synthesized from Ullmann coupling extension of ionic segments for vanadium redox flow batteries

Yu Chen, Qilang Lin, Yuying Zheng, Yan Yu, more

Science China Materials > 2019 > 62 > 2 > 211-224

Membranes with high ion conductivity and selectivity are important for vanadium redox flow batteries. Herein, densely quaternized anion exchange membranes based on quaternary ammonium functionalized octa-benzylmethyl-containing poly(fluorenyl ether ketone)s (QA-OMPFEKs) were prepared from the (i) condensation polymerization of a newly developed octa-benzylmethyl-containing bisphenol monomer via Ullmann...

article

Bi-directional regulation of cartilage metabolism by inhibiting BET proteins—analysis of the effect of I-BET151 on human chondrocytes and murine joints

Jin Dai, Sheng Zhou, Qiting Ge, Jinzhong Qin, more

Journal of Orthopaedic Surgery and Research > 2018 > 13 > 1 > 1-8

Background Proinflammatory cytokines, which can upregulate the expression of matrix-degrading enzymes in chondrocytes, play important roles in the development of osteoarthritis. And a BET protein inhibitor, I-BET151, has been shown to exert an anti-inflammatory effect by repressing the BET protein-mediated expression of inflammatory genes. Our objective is to investigate the effect of I-BET151 on...

article

Partially fluorinated poly(arylene ether)s bearing long alkyl sulfonate side chains for stable and highly conductive proton exchange membranes

Xialin Chen, Haixia Lü, Qilang Lin, Xiang Zhang, more

Journal of Membrane Science > 2018 > 549 > C > 12-22

Condensation polymerization of two diallyl-containing bisphenol monomers with decafluorobiphenyl catalyzed by CsF at low temperatures yielded quantitatively the diallyl-containing fluorinated poly(arylene ether)s, which after the thiol-ene click reaction with sodium 3-mercapto-1-propanesulfonate yielded sulfonated fluorinated poly(arylene ether)s (SFPAEs) with long alkyl sulfonate side-chains. The...

article

Versatile Adamantane-based porous polymers with enhanced microporosity for efficient CO2 capture and iodine removal

Dongyang Chen, Yu Fu, Wenguang Yu, Guipeng Yu, more

Chemical Engineering Journal > 2018 > 334 > C > 900-906

A series of multifunctional nanoporous organic polymers with high microporosity have been successfully synthesized via Friedel-Crafts alkylation and Scholl coupling reactions. Porous properties are well-controllable by simply regulating the lengths and rigidities of linkers, where the rigid tetrahedral building block, i.e. 1,3,5,7-tetraphenyladamantane, knitted with flexible alkyl chains leads to...

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VANADIUM REDOX FLOW BATTERY (9)
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INFONA - science communication portal

Search results for: Dongyang Chen

Design and numerical study of a bidirectional acoustic microfluidic pump enabled by microcantilever arrays

Mesogenic Groups Control the Emitter Orientation in Multi‐Resonance TADF Emitter Films**

Mesogenic Groups Control the Emitter Orientation in Multi‐Resonance TADF Emitter Films**

Quantifying properties (K) and ( $μ^{s}$ )

Planar and Rigid Pyrazine‐Based TADF Emitter for Deep Blue Bright Organic Light‐Emitting Diodes

Front Cover: Planar and Rigid Pyrazine‐Based TADF Emitter for Deep Blue Bright Organic Light‐Emitting Diodes (Eur. J. Org. Chem. 16/2021)

Mild C−F Activation in Perfluorinated Arenes through Photosensitized Insertion of Isonitriles at 350 nm

Optical detection system for laser cooling and precision laser spectroscopy of relativistic highly charged ions at the CSRe

HMEJ-mediated efficient site-specific gene integration in chicken cells

Quantitative Bessaga–Pełczyński property and quantitative Rosenthal property

Cyclostratigraphic Calibration of the Upper Ordovician (Sandbian–Katian) Pagoda and Linhsiang Formations in the Yichang Area, South China

Geological Panorama Database: Digitizing and Visualizing the Geological Outcrops

Simultaneous Determination of 24 Polycyclic Aromatic Hydrocarbons in Oils by Gas Chromatography-Mass Spectrometry Using an Improved Clean-up Procedure

Laser cooling and precision laser spectroscopy of highly charged ions at the storage ring CSRe and the future HIAF

Multinozzle high efficiency electrospinning with the constraint of sheath gas

Selectivity enhancement of quaternized poly(arylene ether ketone) membranes by ion segregation for vanadium redox flow batteries

Densely quaternized anion exchange membranes synthesized from Ullmann coupling extension of ionic segments for vanadium redox flow batteries

Bi-directional regulation of cartilage metabolism by inhibiting BET proteins—analysis of the effect of I-BET151 on human chondrocytes and murine joints

Partially fluorinated poly(arylene ether)s bearing long alkyl sulfonate side chains for stable and highly conductive proton exchange membranes

Versatile Adamantane-based porous polymers with enhanced microporosity for efficient CO2 capture and iodine removal

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