Zhifang Sun

ORCID: 0000-0003-3247-9813
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About
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Research Areas
  • Advanced biosensing and bioanalysis techniques
  • Supramolecular Self-Assembly in Materials
  • Supercapacitor Materials and Fabrication
  • Advanced battery technologies research
  • Advancements in Battery Materials
  • Aerogels and thermal insulation
  • Electrocatalysts for Energy Conversion
  • Hydrogels: synthesis, properties, applications
  • Advanced Materials and Mechanics
  • Surface Modification and Superhydrophobicity
  • RNA Interference and Gene Delivery
  • Conducting polymers and applications
  • Micro and Nano Robotics
  • Advanced Sensor and Energy Harvesting Materials
  • Advanced Battery Materials and Technologies
  • Molecular Junctions and Nanostructures
  • Molecular Sensors and Ion Detection
  • Biosensors and Analytical Detection
  • Polydiacetylene-based materials and applications
  • Supramolecular Chemistry and Complexes
  • Advanced Cellulose Research Studies
  • Polymer Surface Interaction Studies
  • Nanopore and Nanochannel Transport Studies
  • DNA and Nucleic Acid Chemistry
  • Proteins in Food Systems

Xiangtan University
2023-2025

Hunan Institute of Science and Technology
2022-2024

Central South University
2012-2023

Hangzhou Normal University
2023

Chongqing Medical University
2021-2023

RIKEN Center for Emergent Matter Science
2018-2023

Anyang Normal University
2015-2022

Qilu Hospital of Shandong University
2022

Chongqing Public Health Medical Center
2021

The University of Tokyo
2018-2019

Abstract Self-assembling natural drug hydrogels formed without structural modification and able to act as carriers are of interest for biomedical applications. A lack knowledge about gels limits there current application. Here, we report on rhein, a herbal product, which is directly self-assembled into through noncovalent interactions. This hydrogel shows excellent stability, sustained release reversible stimuli-responses. The consists three-dimensional nanofiber network that prevents...

10.1038/s41467-019-09601-3 article EN cc-by Nature Communications 2019-04-08

Abstract A new type of multistimuli‐responsive hydrogels cross‐linked by metal ions and biopolymers is reported. By mixing the biopolymer chitosan (CS) with a variety at appropriate pH values, we obtained series transparent stable within few seconds through supramolecular complexation. In particular, CS–Ag hydrogel was chosen as model gelation mechanism revealed various measurements. It found that facile association Ag + amino hydroxy groups in CS chains promoted rapid gel‐network formation....

10.1002/anie.201502228 article EN Angewandte Chemie International Edition 2015-05-27

Abstract It is a challenge to prepare organic electrodes for sodium-ion batteries with long cycle life and high capacity. The highly reactive radical intermediates generated during the sodiation/desodiation process could be critical issue because of undesired side reactions. Here we present durable stabilized α-C intermediate. Through resonance effect as well steric effects, excessive reactivity unpaired electron successfully suppressed, thus developing an electrode stable cycling over 2,000...

10.1038/ncomms13318 article EN cc-by Nature Communications 2016-11-07

In this paper we present a new paradigm for designing hydrogelators that exhibit sharp phase transitions in response to series of disparate stimuli, including oxidation-reduction reactions (redox), guest-host interactions, and pH changes. We have serendipitously discovered ferrocenoyl phenylalanine (Fc-F) monomers aggregate water via rapid self-assembly mechanism form stable, multistimuli hydrogels. comparison other known mono- multiresponsive gelators, Fc-F is unique because its small size,...

10.1021/ja403345p article EN Journal of the American Chemical Society 2013-08-11

Peristaltic crawling, which is the moving mechanism of earthworm-like limbless creatures in narrow spaces, a challenging target to mimic by using soft materials. Here we report an unprecedented hydrogel actuator that enables not only peristaltic crawling motion but also reversing its direction. Our cylindrically processed contains gold nanoparticles for photothermal conversion, thermoresponsive polymer network switching electrical permittivity gel interior, and cofacially oriented 2D...

10.1002/anie.201810052 article EN Angewandte Chemie International Edition 2018-10-13

Ultrasmall bimetallic alloy nanoparticles are generated <italic>via</italic> a micro–mesopore confinement synthesis strategy in nanoporous N–carbon. The prepared catalysts show excellent bifunctional performance both ORR and OER, outstanding energy conversion efficiency Zn–air batteries.

10.1039/c9ta02264c article EN Journal of Materials Chemistry A 2019-01-01

Ultralong organic phosphorescence (UOP) has aroused enormous interest in recent years. UOP materials are mainly limited to crystals or rigid host–guest systems. Their poor processability and mechanical properties critically hamper practical applications. Here, we reported a series of ultralong phosphorescent foams with high strength. Phosphorescence lifetime the foam can reach up 485.8 ms at room temperature. Impressively, lightweight gelatin bear compressive pressure 4.44 MPa. Moreover,...

10.1021/jacs.1c07674 article EN Journal of the American Chemical Society 2021-09-22

Mechanical nonreciprocity, or the asymmetric transmission of mechanical quantities between two points in space, is crucial for developing systems that can guide, damp, and control energy. We report a uniform composite hydrogel displays substantial owing to direction-dependent buckling embedded nanofillers. This material exhibits an elastic modulus more than 60 times higher when sheared one direction compared with opposite direction. Consequently, it transform symmetric vibrations into ones...

10.1126/science.adf1206 article EN Science 2023-04-13

A novel biopolymer-chitosan based supramolecular hydrogel type solid state electrolyte was prepared and demonstrated high ionic conductivity, excellent thermal stability, mouldability, flexibility.

10.1039/c6cc08658f article EN Chemical Communications 2017-01-01

The sluggish nature of oxygen reduction reaction (ORR) and evolution (OER) coupled with the high cost related noble-metal catalysts stimulate research active non-noble metal or metal-free catalysts. Though have been reported a lot, fewer show activity toward ORR OER, especially for biomass waste materials. This paper introduces top–down strategy to fabricate series bifunctional derived from plant residue. Among them, catalyst BRCAC8502 shows an excellent electrocatalytic performance both OER...

10.1021/acssuschemeng.9b02964 article EN ACS Sustainable Chemistry & Engineering 2019-08-10

Biomass-derived carbon aerogel with hierarchical porosity and FeN<sub>4</sub> single atom sites outperforms platinum towards the oxygen reduction reaction in alkaline media can be used as cathode catalyst for aluminium–air batteries.

10.1039/c9ta05981d article EN Journal of Materials Chemistry A 2019-01-01

This manuscript presents a brief overview of recent advances in multistimuli-responsive supramolecular gels (MRSGs). The synthesis MRSGs with faster and smarter responsive abilities to variety external stimuli, such as redox reagents, pH changes, ligands, coupling is one key issue for the upgrade current molecular motors, signal sensors, shape memory devices, drug delivery systems, display other devices. However, design rules are still not well understood. lack information about relationship...

10.1002/cphc.201402187 article EN ChemPhysChem 2014-06-20

Abstract Peristaltic crawling, which is the moving mechanism of earthworm‐like limbless creatures in narrow spaces, a challenging target to mimic by using soft materials. Here we report an unprecedented hydrogel actuator that enables not only peristaltic crawling motion but also reversing its direction. Our cylindrically processed contains gold nanoparticles for photothermal conversion, thermoresponsive polymer network switching electrical permittivity gel interior, and cofacially oriented...

10.1002/ange.201810052 article EN Angewandte Chemie 2018-10-13

This manuscript introduces a one-pot fabrication procedure for the preparation of supramolecular hybrid hydrogels from low-cost commercially available natural products through "green" strategy. In particular, hydrogels, which are developed with Fmoc-Glu-OMe, silver nanoparticles and chitosan, exhibit outstanding antibacterial properties can be regarded as excellent mouldable wound healing biomaterials.

10.1039/c5cc05195a article EN Chemical Communications 2015-01-01

Abstract A new type of multistimuli‐responsive hydrogels cross‐linked by metal ions and biopolymers is reported. By mixing the biopolymer chitosan (CS) with a variety at appropriate pH values, we obtained series transparent stable within few seconds through supramolecular complexation. In particular, CS–Ag hydrogel was chosen as model gelation mechanism revealed various measurements. It found that facile association Ag + amino hydroxy groups in CS chains promoted rapid gel‐network formation....

10.1002/ange.201502228 article EN Angewandte Chemie 2015-05-26

Abstract Layered stacking and highly porous N, P co‐doped Mo 2 C/C nanosheets are prepared from a stable Mo‐enhanced hydrogel. The hydrogel is formed through the ultrafast cross‐linking of phosphomolybdic acid chitosan. During reduction composite framework under inert gas protection, N carbon produced with in situ formation ultrafine C nanoparticles distributed throughout which entangled via hierarchical lamellar infrastructure. This unique architecture tremendously promote electrochemical...

10.1002/smll.201805022 article EN Small 2019-01-30

This work proposed a new sensing strategy for protease detection by converting homogeneous assay into surface-tethered electrochemical analysis. Streptavidin (SA), tetramer protein, was used as the unit based on SA–biotin coupling chemistry. Caspase-3 model analyte, and biotinylated peptide with sequence of biotin–GDEVDGK–biotin designed substrate. Specifically, substrate could induce an assembly SA to form (SA–biotin–GDEVDGK–biotin)n aggregates through interactions, which confirmed atomic...

10.1021/acssensors.0c02415 article EN ACS Sensors 2021-01-22

Si-based nanostructure composites have been intensively investigated as anode materials for next-generation lithium-ion batteries because of their ultra-high-energy storage capacity. However, it is still a great challenge to fabricate perfect structure satisfying all the requirements good electrical conductivity, robust matrix buffering large volume expansion, and intact linkage Si particles upon long-term cycling. Here, we report novel design multicomponent three-dimensional (3D) networks...

10.1021/acsami.7b00460 article EN ACS Applied Materials & Interfaces 2017-03-03

A novel hollow-structured CuO derived from chitosan-coated Cu/Cu2O composite hollow spheres was mass produced via a supramolecular hydrogel templating method and homogeneously co-doped with C N. Evaluation of the as-produced as anode materials for Li ion batteries showed that they had superior electrochemical properties.

10.1039/c6cc09702b article EN Chemical Communications 2017-01-01
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