A5086710268- Particle Accelerators and Free-Electron Lasers
- Organic Light-Emitting Diodes Research
- Catalytic C–H Functionalization Methods
- Advanced X-ray Imaging Techniques
- Particle accelerators and beam dynamics
- Luminescence and Fluorescent Materials
- Oxidative Organic Chemistry Reactions
- Organic Electronics and Photovoltaics
- Synthesis and Catalytic Reactions
- Catalytic Cross-Coupling Reactions
- Electromagnetic Simulation and Numerical Methods
- Conducting polymers and applications
- Advanced Electron Microscopy Techniques and Applications
- Sulfur-Based Synthesis Techniques
- Masonry and Concrete Structural Analysis
- Laser Material Processing Techniques
- Electron and X-Ray Spectroscopy Techniques
- Radical Photochemical Reactions
- Aerosol Filtration and Electrostatic Precipitation
- Radiation Detection and Scintillator Technologies
- Scientific Research and Discoveries
- Hygrothermal properties of building materials
- Particle Detector Development and Performance
- Dam Engineering and Safety
- GNSS positioning and interference
RIKEN
2024
Yangzhou University
2024
Tsinghua University
2013-2021
Zhejiang University of Technology
2016-2020
State Council of the People's Republic of China
2018
Hangzhou Academy of Agricultural Sciences
2018
SLAC National Accelerator Laboratory
2014-2016
Menlo School
2014-2016
Fudan University
1997
All-solution-processed organic optoelectronic devices can enable the large-scale manufacture of ultrathin wearable electronics with integrated diverse functions. However, complex multilayer-stacking device structure optoelectronics poses challenges for scalable production. Here, we establish all-solution processes to fabricate a wearable, self-powered photoplethysmogram (PPG) sensor. We achieve comparable performance and improved stability compared reference evaporated electrodes by using...
A series of tetradentate Pt(II) emitters containing fused 5/6/6 metallocycles have been designed and synthesized. Molecular geometries play a critical role in determining the photophysical properties. Their emission spectra are significantly affected by molecular core skeletons, substituents, even hydrogen atoms, their positions, which further supported X-ray crystallographic analyses theoretical calculations. The generation excimer emissions is observed for first time found to be...
In this paper we present undulator magnet tapering methods for obtaining high efficiency and multiterawatt peak powers in x-ray free electron lasers (XFELs), a key requirement enabling 3D atomic resolution single molecule imaging nonlinear science. The power of tapered XFELs is sensitive to time dependent effects, like synchrotron sideband growth. To analyze dependence detail perform comparative numerical optimization the magnetic field profile including intentionally disabling these...
A CuCl-catalyzed Ullmann-type C-N cross-coupling reaction of carbazoles and 2-bromopyridine derivatives has been developed for the synthesis N-heteroarylcarbazole employing 1-methyl-imidazole t-BuOLi as ligand base, respectively, both which are found to significantly promote reaction. Low cost low loading catalyst ligand, together with high yields, render this practical be suitable large-scale preparations could useful in material science.
A novel copper-catalyzed oxidation of arene-fused cyclic amines to the corresponding imides has been developed. The reaction can be used synthesize 1,3-disubstituted TPD in high yields.
Deep-blue-light-emitting materials are urgently desired in high-performance organic light-emitting diodes (OLEDs) for full-color display and solid-state lighting applications. However, the development of stable efficient deep-blue emitters remains a great challenge. Herein, series tetradentate Pd(II)-complex-based with rigid 5/6/6 metallocycles no F atom were designed synthesized. These employ various isoelectronic five-membered heteroaryl-ring-containing ligands to exhibit extremely narrow...
An efficient and practical CuCl-catalyzed hydroxylation of N-heteroarylcarbazole bromide for the preparation N-heteroarylcarbazolyl phenols with a broad functional group scope yield up to 98% was developed. It found that both ligand base played critical roles in transformation different products could be generated by changing some substrates. t-BuONa demonstrated better catalytic system avoid formation ether byproduct. In addition, this approach suitable large-scale successfully applied...
A four-component intermolecular trifluoromethylation-acyloxylation of arylalkenes induced by visible light has been developed in the presence photoredox catalyst Ru(bpy)3(PF6)2 under mild reaction conditions. new Umemoto's reagent was used as a trifluoromethyl radical source, and this redox neutral demonstrated good functional group tolerance for aryl alkenes with high yields up to 91%. The detailed process investigated based on control, deuterium O18-labeling experiments support that...
Efficient and selective aerobic oxidation of nitro-substituted alkylarenes to functional compounds is a fundamental process that remains challenge. Here, we report metal-free, efficient, practical approach for the direct carboxylic acids or benzyl alcohols. This sustainable system uses O2 as clean oxidant in cheap green NaOH/EtOH mixture. The position type substituent critically affect products. In addition, this protocol enabled gram-scale preparation acid alcohol derivatives with high...
We study the dependence of peak power a 1.5 \AA{} Terawatt (TW), tapered x-ray free-electron laser (FEL) on transverse electron density distribution. Multidimensional optimization schemes for TW hard lasers are applied to cases transversely uniform and parabolic beam distributions compared Gaussian The optimizations performed 200 m undulator resonant wavelength ${\ensuremath{\lambda}}_{r}=1.5\text{ }\text{ }\AA{}$ using fully three-dimensional FEL particle code genesis. shows that flatter...
Abstract Recently, strong sound wave was proposed to enhance precipitation. The theoretical basis of this proposal has not been effectively studied either experimentally or theoretically. On the microscopic parameters atmospheric cloud physics, paper solved complex nonlinear differential equation show movement characteristics droplets under action waves. motion process an individual droplet in a layer acoustic field is discussed as well relative between two droplets. effects different...
An efficient and practical synthesis of 2,7-bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)triphenylene 4 from two cheap commodity chemicals in five steps with a total yield 48.6% was developed. This process had been successfully applied the electron transport material (ETM) BPyTP-2 gram scale 47.2%. development key intermediate opens door its further application other triphenylene-based ETMs host materials field.
The use of nanojoule femtosecond pulses (NFP) for highly precise proceeding in anti-glaucoma surgery was evaluated. According to the observation scanning electron microscopy (SEM), four types incision patterns, including subsurface, slit-like, spot and cuboid ablations, were accomplished on vitro sclera by NFP with little collateral damage. In comparison microjoule (MFP), can make extremely incisions smoother inner surface less peak power density. present study first illustrates potential...