A5053256176- Graphene research and applications
- Molecular Junctions and Nanostructures
- Conducting polymers and applications
- Fullerene Chemistry and Applications
- Corrosion Behavior and Inhibition
- Quantum and electron transport phenomena
- Organic Electronics and Photovoltaics
- Surface and Thin Film Phenomena
- Hydrogen embrittlement and corrosion behaviors in metals
- Advanced Sensor and Energy Harvesting Materials
- Concrete Corrosion and Durability
- Boron and Carbon Nanomaterials Research
- Spectroscopy and Quantum Chemical Studies
- Surface Chemistry and Catalysis
- ZnO doping and properties
- Gold and Silver Nanoparticles Synthesis and Applications
- Force Microscopy Techniques and Applications
- Advanced Chemical Physics Studies
- Magnesium Alloys: Properties and Applications
- Gas Sensing Nanomaterials and Sensors
- Electronic and Structural Properties of Oxides
- Mass Spectrometry Techniques and Applications
- Analytical Chemistry and Sensors
- Supercapacitor Materials and Fabrication
- Aluminum Alloys Composites Properties
China State Shipbuilding (China)
2016-2025
Taiyuan Iron and Steel Group (China)
2025
National Yang Ming Chiao Tung University
2025
Chengdu University
2024-2025
Chengdu University of Traditional Chinese Medicine
2025
University of Science and Technology of China
2014-2024
Renji Hospital
2021-2024
Shanghai Jiao Tong University
2000-2024
Beijing National Laboratory for Molecular Sciences
2012-2024
Chinese Academy of Sciences
2010-2024
Graphene is an important material with potential application in spintronics. Edge-modified zigzag graphene nanoribbons (ZGNR) are investigated density functional theory. The modifications realized by saturating the dangling edge bonds different terminal groups, such as H, NH2, NO2, and CH3. Such modification has a significant impact on ZGNR electronic structure. Half-metallicity observed when terminated NO2 groups at one CH3 other side. Free energy analysis suggests that edge-modification...
We report that the Kondo effect exerted by a magnetic ion depends on its chemical environment. A cobalt phthalocyanine molecule adsorbed an Au111 surface exhibited no effect. Cutting away eight hydrogen atoms from with voltage pulses scanning tunneling microscope tip allowed four orbitals of this to chemically bond gold substrate. The localized spin was recovered in artificial molecular structure, and clear resonance observed near Fermi surface. attribute high temperature (more than 200...
The macroscopic molecular self-assembly of an amphiphilic hyperbranched copolymer in acetone generated multiwalled tubes millimeters diameter and centimeters length. thickness the tube walls approaches 400 nanometers, have inhomogeneous lamella structure that alternates between ordered hydrophilic domains amorphous, partly irregular domains.
Chemical enhancement is an important mechanism in surface-enhanced Raman spectroscopy. It found that mildly reduced graphene oxide (MR-GO) nanosheets can significantly increase the chemical of main peaks by up to 1 order magnitude for adsorbed Rhodamine B (RhB) molecules, comparison with mechanically exfoliated graphene. The observed factors be as large ∼10(3) and show clear dependence on reduction time oxide, indicating steadily controlled specific groups. With help X-ray photoelectron...
Our first principles calculations reveal that an oxidative cut of graphene is realized by forming epoxy and then carbonyl pairs. Direct formation a pair to tear up from edge position not favorable in energy. This atomic picture valuable for developing effective means manipulation. The proposed pairs may be related some long puzzling experimental observations on oxide.
The combination of gold and copper is a good way to pull down the cost ameliorate instability copper. Through shape control, synergy these two metals can be better exploited. Here, we report an aqueous phase route synthesis pentacle gold-copper alloy nanocrystals with fivefold twinning, size which tuned in range from 45 200 nm. growth found start decahedral core, followed by protrusion branches along twinning planes. Pentacle products display strong localized surface plasmon resonance peaks...
We report a rational design of CaHPO(4)-α-amylase hybrid nanobiocatalytic system based on allosteric effect and an explanation the increase in catalytic activity when certain enzymes are immobilized specific nanomaterials. Employing calcification approach aqueous solutions, we acquired such new systems with three different morphologies, i.e., nanoflowers, nanoplates, parallel hexahedrons. Through studying enzymatic performance these free α-amylase with/without Ca(2+), demonstrated how two...
Electrical control of spin polarization is very desirable in spintronics, since electric field can be easily applied locally contrast with magnetic field. Here, we propose a new concept bipolar semiconductor (BMS) which completely spin-polarized currents reversible created and controlled simply by applying gate voltage. This result the unique electronic structure BMS, where valence conduction bands possess opposite when approaching Fermi level. Our band transport calculations on...
A linker-free connected reduced graphene oxide/CdSe nanoparticle (R-GO/CdSe NP) nanocomposite was produced by directly anchoring CdSe NPs onto R-GO. The morphological and structural characterizations evidence that the single-crystal with size of a few tens nanometers can be efficiently decorated on photoresponse this is drastically enhanced compared pure NPs, bare R-GO, physically mixed R-GO/CdSe while photoluminescence in composite much quenched, indicating photoinduced carriers generated...
The chemical reactivity of different surfaces titanium dioxide (TiO2) has been the subject extensive studies in recent decades. anatase TiO2(001) and its (1 × 4) reconstructed were theoretically considered to be most reactive have heavily pursued by synthetic chemists. However, lack direct experimental verification or determination active sites on these caused controversy debate. Here we report a systematic study an TiO2(001)-(1 surface means microscopic spectroscopic techniques combination...
Abstract The coherent interaction between quantum emitters and photonic modes in cavities underlies many of the current strategies aiming at generating controlling states. A plasmonic nanocavity provides a powerful solution for reducing effective mode volumes down to nanometre scale, but spatial control atomic scale coupling with single molecular emitter is challenging. Here we demonstrate sub-nanometre over molecule close proximity by monitoring evolution Fano lineshapes Lamb shifts...
Joint strategy for surface chemistry Recent advances in the development of tip-based microscopy have led to angstrom-scale spatial resolution, but no technique provides univocal characterization structural and chemical heterogeneities species. Using a model system pentacene derivatives on Ag(110) surface, Xu et al. show that combination scanning tunneling microscopy, atomic force tip-enhanced Raman scattering electronic, structural, information sufficiently correlated an unambiguous...
Flexible electrochromic devices (FECDs) are extensively used in smart windows, deformable electronic displays, and wearable electronics. However, it remains very challenging to fabricate low-cost yet high-performance visible–near-infrared (vis–NIR) FECDs. In this work, we overcome hurdle by developing a fluorinated polythiophene derivative with superior overall performance simple electropolymerization patterning. Fluorophenyl-modified (band gap: 1.74 eV) can be readily synthesized via...
Abstract High‐performance deep ultraviolet (DUV) spectroscopy is crucial in driving innovations for biomedical research, clinical diagnosis, and material science. DUV resonant nanostructures have shown capabilities significantly improving sensitivity. However, they encounter significant challenges practical applications, including instability due to oxidation light‐induced damage, the strong photoluminescent noise background from their constituent materials. An efficient robust platform...
Introducing a charge into solid such as metal oxide through chemical, electrical, or optical means can dramatically change its chemical physical properties. To minimize free energy, lattice will distort in material specific way to accommodate (screen) the Coulomb and exchange interactions presented by excess charge. The carrier-lattice correlation response these defines spatial extent of perturbing impart extraordinary properties superconductivity catalytic activity. Here we investigate...
The structural, electronic, and vibrational properties of small-radius single-walled BN nanotubes are studied using the density functional method with local approximation. results show that chirality preference observed in experiments may be explained from relative stability corresponding strips. Compared armchair strips, zigzag strips have larger binding energies thus more easily formed. smallest stable nanotube is found to (5,0) nanotube. energy gap small decreases rapidly decrease radius....
We investigate the electronic and magnetic properties of proposed one-dimensional transition metal (TM = Sc, Ti, V, Cr, Mn) −benzene (Bz) sandwich polymers by means density functional calculations. [V(Bz)]∞ is found to be a quasi-half-metallic ferromagnet, half-metallic ferromagnetism predicted for [Mn(Bz)]∞. Moreover, we show that stretching [TM(Bz)]∞ could have dramatic effects on their properties. The elongated displays behavior, [Mn(Bz)]∞ stretched certain degree becomes an...