A5028687654- Conducting polymers and applications
- Organic Electronics and Photovoltaics
- Advanced Memory and Neural Computing
- Perovskite Materials and Applications
- Drug Transport and Resistance Mechanisms
- Advanced Sensor and Energy Harvesting Materials
- Thin-Film Transistor Technologies
- Organic and Molecular Conductors Research
- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Semiconductor materials and devices
- Metabolism and Genetic Disorders
- Neonatal Health and Biochemistry
- Luminescence and Fluorescent Materials
- Graphite, nuclear technology, radiation studies
- Covalent Organic Framework Applications
- Organic Chemistry Cycloaddition Reactions
- Molecular Junctions and Nanostructures
- Analog and Mixed-Signal Circuit Design
- Steroid Chemistry and Biochemistry
- Analytical Chemistry and Sensors
- Thermal properties of materials
- Nanowire Synthesis and Applications
- Chemical Synthesis and Reactions
- Nuclear reactor physics and engineering
Kindai University
2025
The University of Tokyo
2017-2023
Stanford University
2014-2022
Innovation Research Center
2020
Material (Belgium)
2020
Stanford Medicine
2015
Tokyo Institute of Technology
2011-2013
Health Sciences University of Hokkaido
1995-2007
Toshiba (Japan)
2006
Texas Instruments (United States)
2002
Some animals, such as the chameleon and cephalopod, have remarkable capability to change their skin colour. This unique characteristic has long inspired scientists develop materials devices mimic a function. However, it requires complex integration of stretchability, colour-changing tactile sensing. Here we show an all-solution processed chameleon-inspired stretchable electronic (e-skin), in which e-skin colour can easily be controlled through varying applied pressure along with duration. As...
A self-healing dielectric elastomer is achieved by the incorporation of metal-ligand coordination as cross-linking sites in nonpolar polydimethylsiloxane (PDMS) polymers. The ligand 2,2'-bipyridine-5,5'-dicarboxylic amide, while metal salts investigated here are Fe(2+) and Zn(2+) with various counteranions. kinetically labile between bipyridine endows polymer fast ability at ambient condition. When integrated into organic field-effect transistors (OFETs) gate dielectrics, FeCl2 ZnCl2...
Carbon capture and sequestration from point sources is an important component in the CO2 emission mitigation portfolio. In particular, sorbents with both high capacity selectivity are required for reducing cost of carbon capture. Although physisorbents have advantage low energy consumption regeneration, it remains a challenge to obtain sufficient CO2/N2 at same time. Here, we report controlled synthesis novel N-doped hierarchical that exhibits record-high Henry's law among physisorptive...
An average PCE of 4.2% for all-polymer solar cells from 20 devices with an J SC 8.8 mA cm−2 are obtained a donor-acceptor pair despite low LUMO-LUMO energy offset less than 0.1 eV. Incorporation polystyrene side chains into the donor polymer is found to assist in reducing phase separation domain length scale, and results more 20% enhancement PCE. We observe direct correlation between short circuit current (J SC) scale BHJ separation, which by resonance soft X-ray scattering. The performance...
Diketopyrrolopyrrole-based semiconducting polymer nanoparticles with high photostability and strong photoacoustic brightness are designed synthesized, which results in 5.3-fold signal enhancement tumor xenografts after systemic administration. As a service to our authors readers, this journal provides supporting information supplied by the authors. Such materials peer reviewed may be re-organized for online delivery, but not copy-edited or typeset. Technical support issues arising from...
Abstract Morphology control of solution coated solar cell materials presents a key challenge limiting their device performance and commercial viability. Here we present new concept for controlling phase separation during printing using an all-polymer bulk heterojunction as model system. The aspect our method lies in the design fluid flow microstructured blade, on basis hypothesis flow-induced polymer crystallization. Our resulted ∼90% increase donor thin film crystallinity reduced microphase...
The challenge of continuous printing in high‐efficiency large‐area organic solar cells is a key limiting factor for their widespread adoption. A materials design concept achieving large‐area, solution‐coated all‐polymer bulk heterojunction with stable phase separation morphology between the donor and acceptor presented. lies inhibiting strong crystallization polymers, thus forming intermixed, low crystallinity, mostly amorphous blends. Based on experiments using donors acceptors different...
In this work, we synthesize large-area thin films of a conjugated, imine-based, two-dimensional covalent organic framework at the solution/air interface. Thicknesses between ∼2-200 nm are achieved. Films can be transferred to any desired substrate by lifting from underneath, enabling their use as semiconducting active layer in field-effect transistors.
Polymeric materials for use in memory devices have attracted significant scientific interest due to their several advantages, such as low cost, solution processability, high mechanical strength, and possible development of three-dimensional stacking devices. Taking into account the heat resistance device fabrication process, polyimides (PIs) are one most attractive polymers applications thermal stability strength. In recent years, a large number studies revealed that almost all kinds...
The promise of wearable and implantable devices has made stretchable organic semiconductors highly desirable. Though there are increasing attempts to design intrinsically conjugated polymers, their performance in terms charge carrier mobility maximum fracture strain is still lacking behind extrinsic approaches (i.e., buckling, Kirigami interconnects). Here, polymer crosslinking with flexible oligomers applied as a strategy reduce the tensile modulus improve strain, well fatigue resistance...
The n‐doping of several conjugated co‐polymers based on perylene diimide (PDI) and napthalene (NDI) acceptors co‐polymerized with ethynylene, ethylene, bithiophene by the dimeric dopant (2‐Cyc‐DMBI) 2 is reported. reactions are confirmed in solution UV–Vis–NIR spectroscopy thin films photothermal deflection (PDS). reduced species ethynylene‐linked polymers found to be more delocalized along polymer backbone than bithiophene‐linked comparison absorption spectra. A high conductivity 0.45 S cm...
The solid‐state packing and polymer orientation relative to the substrate are key properties control in order achieve high charge carrier mobilities organic field effect transistors (OFET). Intuitively, shorter side chains expected yield higher because of a denser solid state motif ratio transport moieties. However our findings suggest that chain plays crucial role high‐performing diketopyrrolopyrrole‐based polymers. By synthesizing series DPP‐based polymers with different branched alkyl...
We report the synthesis, optoelectronic properties, and electrical switching memory characteristics of three new donor–acceptor oligoimides consisting electron-donating moieties (triphenylamine or carbazole) electron-withdrawing phthalimide moieties. The influence different donor (D)–acceptor (A) arrangements, including D-A-D A-D-A structures, on properties was explored. Devices based revealed a reversible nonvolatile negative-differential-resistance (NDR) characteristic excellent stability...
In this work, the detailed morphology studies of polymer poly(3‐hexylthiophene‐2,5‐diyl) (P3HT):fullerene(PCBM) and polymer(P3HT):polymer naphthalene diimide thiophene (PNDIT) solar cell are presented to understand challenge for getting high performance all‐polymer cells. The in situ X‐ray scattering optical interferometry ex hard soft imaging techniques used characterize bulk heterojunction (BHJ) ink during drying dried state. crystallization P3HT polymers P3HT:PCBM shows very different...
We report the synthesis and characterization of two novel polyimides (PIs), PI(2,8-APDBT-6FDA) PI(3,7-APDBT-6FDA), consisting alternating electron-donating 2,8- or 3,7-phenylenesulfanyl-substituted dibenzothiophene electron-accepting phthalimide moieties for high-performance memory device applications. The optical band gaps PI(3,7-APDBT-6FDA) films were 3.40 3.31 eV, respectively, indicating significance linkage position. with ITO/PIs/Al configuration showed multimemory characteristics...
A series of isoindigo‐based conjugated polymers (PII2F‐C m Si, = 3–11) with alkyl siloxane‐terminated side chains are prepared, in which the branching point is systematically “moved away” from backbone by one carbon atom. To investigate structure–property relationship, polymer thin film subsequently tested top‐contact field‐effect transistors, and further characterized both grazing incidence X‐ray diffraction atomic force microscopy. Hole mobilities over 1 cm 2 V −1 s exhibited for all...
We report the nonvolatile memory characteristics of n-type N,N′-bis(2-phenylethyl)perylene-3,4:9,10-tetracarboxylic diimide (BPE-PTCDI) based organic field-effect transistors (OFET) using polyimide electrets poly[2,5-bis(4-aminophenylenesulfanyl)selenophene–hexafluoroisopropylidenediphthalimide] (PI(APSP-6FDA)), poly[2,5-bis(4-aminophenylenesulfanyl)thiophene–hexafluoroisopropylidenediphthalimide] (PI(APST-6FDA)), and poly(4,4′-oxidianiline-4,4′-hexafluoroisopropylidenediphthalic anhydride)...
Herein, we report an all-polymer solar cell with a PCE of over 5% fabricated non-halogenated solvent. Our method polymer side-chain engineering using polystyrene enhanced the solubility polymers in toluene. The phase separation size polymer–polymer blend was controlled by tuning additive concentration. Three different additives were employed and studied. To best our knowledge, this is highest performing both solvent additive, which highlights its potential toward environmentally friendly...
Hemispherical image sensors simplify lens designs, reduce optical aberrations, and improve resolution for compact wide-field-of-view cameras. To achieve hemispherical sensors, organic materials are promising candidates due to the following advantages: tunability of optoelectronic/spectral response low-temperature low-cost processes. Here, a photolithographic process is developed prepare sensor array using thin film photomemory transistors with density 308 pixels per square centimeter. This...
Organic polymer based electrical memory devices have attracted significant scientific interest for flexible electronics. However, molecular design principles of polymers with specified characteristics on substrates remain challenges. Herein we developed new triphenylamine–pyrene containing donor–acceptor polyimides (PIs) poly(ethylene naphthalate) (PEN)/Al/PIs/Al cross-point devices, which showed the changing from volatile to nonvolatile via relative copolymer ratio. The PIs were prepared...
Random copolyimides, PI–PBIX, with different compositions of 4,4′-(hexafluoroisopropylidene)diphthalic anhydride (6FDA), N,N′-bis(4-aminophenyl)-3,4,9,10-perylenebis(dicarboximide) (PBI), and 4,4′-diamino-4″-methyltriphenylamine (AMTPA) were designed synthesized for resistive-switching memory device applications. By varying the feeding ratio monomers, PI–PBIX (where X = 0, 1, 2.5, 5, 10 molar composition repeating units containing PBI) showed tunable optical electronic properties through...
Journal Article Physiological Role of D-3-Hydroxyacyl-CoA Dehydratase/D-3-Hydroxyacyl-CoA Dehydrogenase Bifunctional Protein Get access Ling Jiang, Jiang *Department Biochemistry, Shinshu University School Medicine3-1-1 Asahi, Matsumoto, Nagano 390 Search for other works by this author on: Oxford Academic PubMed Google Scholar Takao Kurosawa, Kurosawa †Faculty Pharmaceutical Sciences, Health Sciences HokkaidoIshikari-Tobetsu, Hokkaido 061-02 Masahiro Sato, Sato Yasuyuki Suzuki, Suzuki...
Resistance switching memory devices with the configuration of poly(ethylene naphthalate)(PEN)/Al/polyimide (PI) blend/Al are reported. The active layers PI blend films were prepared from different compositions poly[4,4'-diamino-4″-methyltriphenylamine-hexafluoroisopropylidenediphthalimide] (PI(AMTPA)) and polycyclic aromatic compounds (coronene or N,N-bis[4-(2-octyldodecyloxy)phenyl]-3,4,9,10-perylenetetracarboxylic diimide (PDI-DO)). additives large π-conjugated can stabilize charge...