A5035017369- Organic Electronics and Photovoltaics
- Conducting polymers and applications
- Organic Light-Emitting Diodes Research
- Thin-Film Transistor Technologies
- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Perovskite Materials and Applications
- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Nanowire Synthesis and Applications
- Advanced Photocatalysis Techniques
- Synthesis and properties of polymers
- Advanced Battery Technologies Research
- Gas Sensing Nanomaterials and Sensors
- ZnO doping and properties
- Molecular Junctions and Nanostructures
- Advanced Sensor and Energy Harvesting Materials
- Supercapacitor Materials and Fabrication
- Luminescence and Fluorescent Materials
- Quantum Dots Synthesis And Properties
- Covalent Organic Framework Applications
- Metal-Organic Frameworks: Synthesis and Applications
- Viral gastroenteritis research and epidemiology
- Silicone and Siloxane Chemistry
- TiO2 Photocatalysis and Solar Cells
Lanzhou University
2011-2025
University of Waterloo
2016-2025
First Hospital of Lanzhou University
2011-2025
Changzhou University
2024-2025
China Automotive Technology and Research Center
2023-2024
People's Liberation Army 401 Hospital
2024
Hunan Cancer Hospital
2024
Hunan University of Science and Technology
2023-2024
Capital Medical University
2022-2024
Northwestern University
2024
In recent years, the electron-accepting diketopyrrolopyrrole (DPP) moiety has been receiving considerable attention for constructing donor–acceptor (D–A) type organic semiconductors a variety of applications, particularly thin film transistors (OTFTs) and photovoltaics (OPVs). Through association DPP unit with appropriate electron donating building blocks, resulting D–A molecules interact strongly in solid state through intermolecular π–π interactions, leading to highly ordered structures at...
A copolymer comprising 1,4-diketopyrrolo[3,4-c]pyrrole (DPP) and thieno[3,2-b]thiophene moieties, PDBT-co-TT, shows high hole mobility of up to 0.94 cm2 V−1 s−1 in organic thin-film transistors. The strong intermolecular interactions originated from π-π stacking donor-acceptor interaction lead the formation interconnected polymer networks having an ordered lamellar structure, which have established highly efficient pathways for charge carrier transport.
A facile synthesis of stable silver nanoparticles having a particle size <10 nm is described. The involved reduction acetate with substituted hydrazine, such as PhNHNH2, in the presence 1-alkylamine, C16H33NH2, toluene at 25−60 °C. Spin-coated thin films or printed electronic features alkylamine-stabilized could be easily converted 120−160 °C into highly conductive elements conductivity 2−4 × 104 S cm-1. Organic thin-film transistors source/drain electrodes this nature exhibited field-effect...
A stable, high-mobility ZnO thin-film semiconductor was fabricated by thermal treatment of a solution-deposited thin film from solution Zn(OAc)2/2-ethanolamine in methoxyethanol. This composed closely packed single crystals (∼30 to 50 nm) having hexagonal structure assuming preferred orientation with its c-axis perpendicular the substrate. Field-effect mobility 5−6 cm2 V-1 s-1 and current on-to-off ratio 105−106 were demonstrated this transistors.
A new , solution-processable, low-bandgap, diketopyrrolopyrrole-benzothiadiazole-based, donor-acceptor polymer semiconductor (PDPP-TBT) is reported. This exhibits ambipolar charge transport when used as a single component active in OTFTs with balanced hole and electron mobilities of 0.35 cm2 V−1s−1 0.40 V−1s−1, respectively. has the potential for transistor-based complementary circuits printed electronics.
A donor-acceptor polymer semiconductor, PDQT, comprising diketopyrrolopyrrole (DPP) and β-unsubstituted quaterthiophene (QT) for organic thin film transistors (OTFTs) is reported. This forms ordered layer-by-layer lamellar packing with an edge-on orientation in films even without thermal annealing. The strong intermolecular interactions arising from the fused aromatic DPP moiety DPP-QT interaction facilitate spontaneous self-assembly of chains into close proximity form a large π-π overlap,...
This article reviews recent major progress in the development of organic semiconductors as electron transport n-channel materials field effect transistors (OFETs).
A new electron acceptor building block, 3,6-di(pyridin-2-yl)pyrrolo[3,4-c ]pyrrole-1,4(2H ,5H)-dione (DBPy), is used to construct a donor-acceptor polymer, PDBPyBT. This polymer exhibits strong self-assembly capability, form highly crystalline and oriented thin films with short π–π stacking distance of 0.36 nm. PDBPyBT shows ambipolar charge-transport performance in organic thin-film transistors, reaching record high electron-mobility value 6.30 cm2 V−1 s−1. As service our authors readers,...
Poly(4,8-dialkyl-2,6-bis(3-alkylthiophen-2-yl)benzo[1,2-b:4,5-b']dithiophene) 1 represents a new class of polymer semiconductors which self-assemble into higher structural orders without thermal annealing and provide excellent field-effect transistor performance with mobility up to 0.25 cm2 V-1 s-1 when used as solution-processed thin-film semiconductor in transistors.
Abstract Polymer‐based solid electrolytes (PSEs) have attracted tremendous interests for the next‐generation lithium batteries in terms of high safety and energy density along with good flexibility. Remarkable performances been demonstrated PSEs, which endowed PSEs potential to replace liquid meet market demands. In this review, polymer matrices, different architectures, functional filler materials used are discussed explore design concepts, methodologies, working mechanisms, pros cons...
Abstract Printed organic thin‐film transistors (OTFTs) have received great interests as potentially low‐cost alternative to silicon technology for application in large‐area, flexible, and ultra‐low‐cost electronics. One of the critical materials TFTs is semiconductor, which has a dominant impact on transistor properties. We review here structural studies design thiophene‐based polymer semiconductors with respect solution processability, ambient stability, molecular self‐organization,...
Abstract Solar-driven evaporation offers a sustainable solution for water purification, but efficiency losses due to heat dissipation and fouling limit its scalability. Herein, we present bilayer-structured solar evaporator ( SDWE ) with dynamic fluidic flow mechanism, designed ensure thin supply self-cleaning capability. The porous polydopamine PDA layer on nickel skeleton provides photothermal functionality microchannels, while the thermo-responsive sporopollenin bottom acts as switchable...
Abstract The dissemination of sensors is key to realizing a sustainable, ‘intelligent’ world, where everyday objects and environments are equipped with sensing capabilities advance the sustainability quality our lives—e.g. via smart homes, cities, healthcare, logistics, Industry 4.0, precision agriculture. realization full potential these applications critically depends on availability easy-to-make, low-cost sensor technologies. Sensors based printable electronic materials offer ideal...
Proper functionalization of indolo[3,2-b]carbazole led to a new class high-performance organic semiconductors suitable for thin-film transistor (OTFT) applications. While 5,11-diaryl-substituted indolo[3,2-b]carbazoles without long alkyl side chains provided amorphous thin films upon vacuum deposition, those with sufficiently such as 5,11-bis(4-octylphenyl)indolo[3,2-b]carbazole self-organized readily into highly crystalline layered structures under similar conditions. OTFTs using channel...
Random and alternating fluorene/carbazole (F/Cz) copolymers with various carbazole contents (20−50 mol %) have been designed synthesized for use as the hole-transporting well light-emitting layer in blue diodes (LEDs). DSC analysis has indicated complete suppression of crystallizability these polymers by introduction 3,6-carbazole linkages into polymer backbone, which also results changes their optical properties. The absorption maximum blue-shifted an increase content due to interruption...
Strategically functionalized 5,11-dialkylindolo[3,2-b]carbazoles (see Figure) represent a novel class of high-mobility p-channel semiconductors for organic thin-film transistors. Specifically, 2,8-dichloro-substituted 5,11-didodecylindolo[3,2-b]carbazole, which forms highly crystalline films with large interconnecting terrace-like layered domain structures, has exhibited mobilities reaching 0.14 cm2 V–1 s–1 and current on/off ratios 107 under ambient conditions. Supporting information this...
Field-effect transistor properties, structural design, synthesis, and characterization of the poly(2,5-bis(2-thienyl)-3,6-dialkylthieno[3,2-b]thiophene) thin-film semiconductors shown in figure are described. Using low-temperature solution fabrication channel under ambient conditions, a mobility 0.25 cm2 V–1 s–1 current on/off ratio 107 obtained.
In this work, we report a novel donor–acceptor based solution processable low band gap polymer semiconductor, PDPP–TNT, synthesized via Suzuki coupling using condensed diketopyrrolopyrrole (DPP) as an acceptor moiety with fused naphthalene donor building block in the backbone. This exhibits p-channel charge transport characteristics when used active semiconductor organic thin-film transistor (OTFT) devices. The hole mobilities of 0.65 cm2 V−1s−1 and 0.98 are achieved respectively bottom gate...
A simple and efficient approach to a printable silver conductor for organic electronics is described. Conductive features were prepared by annealing thin-film deposited from an alcoholic solution of acetate, ethanolamine, long-chain carboxylic acid. High electrical conductivity similar that vacuum-deposited could be achieved at relatively low processing temperature. Organic transistors with source/drain electrodes this provided excellent field-effect transistor properties.
Pyrrolo[3,4-c]pyrrole-1,4(2H,5H)-dione or diketopyrrolopyrrole (DPP) is a useful electron-withdrawing fused aromatic moiety for the preparation of donor–acceptor polymers as active semiconductors organic electronics. This study uses DPP-furan-containing building block, 3,6-di(furan-2-yl)pyrrolo[3,4-c]pyrrole-1,4(2H,5H)-dione (DBF), to couple with 2,2′-bithiophene unit, forming new copolymer, PDBFBT. Compared its structural analogue, 3,6-di(thiophen-2-yl)pyrrolo[3,4-c]pyrrole-1,4(2H,5H)-dione...
In this work, we report design, synthesis and characterization of solution processable low band gap polymer semiconductors, poly{3,6-difuran-2-yl-2,5-di(2-octyldodecyl)-pyrrolo[3,4-c]pyrrole-1,4-dione-alt-phenylene} (PDPP-FPF), poly{3,6-difuran-2-yl-2,5-di(2-octyldodecyl)-pyrrolo[3,4-c]pyrrole-1,4-dione-alt-naphthalene} (PDPP-FNF) poly{3,6-difuran-2-yl-2,5-di(2-octyldodecyl)-pyrrolo[3,4-c]pyrrole-1,4-dione-alt-anthracene} (PDPP-FAF) using the furan-containing...
Direct (hetero)arylation polymerization (DHAP) shows great promise for simple, cheap, and environmentally benign preparation of conjugated polymers, but seems to involve a lack selectivity when different aromatic C-H bonds are present. We report that some time-controlled DHAP reactions can yield well-defined processable semiconducting polymers. Following these procedures, various compounds have been efficiently polymerized, including 2,7-dibromofluorene, 2,7-dibromocarbazole,...
In China, there were few studies about the pathogens of acute viral encephalitis and meningitis in children recent years. The aims this study to characterize etiology prognosis Chinese children.This was a multicentre prospective study. Two hundred sixty one patients 285 enrolled. mean age 5.88 ± 3.60 years 6.39 3.57 years, respectively. Real-time reverse transcription PCR multiplex used detect human enteroviruses herpes viruses cerebrospinal fluid (CSF) with or meningitis. enzyme-linked...
Perylene diimides (PDIs) are one of the most widely studied n‐type materials, showing great promise as electron acceptors in organic photovoltaic devices and transport materials n‐channel field effect transistors. Amongst well‐established chemical modification strategies for increasing mobility PDI, substitution imide oxygen atoms with sulfur, known thionation, has remained largely unexplored. In this work, it is demonstrated that thionation a highly effective means enhancing bis‐ N...
Mg<sup>2+</sup> cross-linked conductive polymer PEDOT:PSS is used as a cathode binder to improve the Li–S battery capacity and cycling stability.