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Organic ligand nanoarchitectonics for BiVO_(4) photoanodes surface passivation and cocatalyst grafting

Nano Research 2024年第5期17卷 3667-3674页

作者： Jingyi Lin Xin Li Zhiliang Wang Runlu Liu Hui Pan Yixin Zhao Lingti Kong Yao Li Shenmin Zhu Lianzhou Wang State Key Laboratory of Metal Matrix Composites School of Materials Science and EngineeringShanghai Jiao Tong UniversityShanghai 200240China Nanomaterials Centre School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnologythe University of QueenslandQLD 4072Australia School of Environmental Science and Engineering Shanghai Jiao Tong UniversityShanghai 200240China Hubei Key Laboratory of Plasma Chemistry and Advanced Materials Wuhan Institute of TechnologyWuhan 430205China

Bismuth vanadate(BiVO_(4))is a promising photoanode material for efficient photoelectrochemical(PEC)water splitting,whereas its performance is inhibited by detrimental surface *** solve the problem,herein,a low-cost organic molecule 1,3,5-benzenetricarboxylic acid(BTC)is selected for surface passivation of BiVO_(4) photoanodes(BVOs),which also provides bonding sites for Co^(2+)to anchor,resulting in a Co-BTC-BVO *** to its strong coordination with metal ions,BTC not only passivates surface states of BVO,but also provides bonding between BVO and catalytic active sites(Co^(2+))to form a molecular *** study and interfacial charge kinetic investigation reveal that chemical bonding formed at the interface greatly suppresses charge recombination and accelerates charge *** obtained Co-BTC-BVO photoanode exhibits a photocurrent density of 4.82 mA/cm^(2) at 1.23 V *** hydrogen electrode(RHE)and a low onset potential of 0.22 VRHE under AM 1.5 G illumination,which ranks among the best photoanodes coupled with Co-based *** work presents a novel selection of passivation layers and emphasizes the significance of interfacial chemical bonding for the construction of efficient photoanodes.

关键词： bismuth vanadate photoanode water splitting surface passivation bridging ligands

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Evolution of stellated gold nanoparticles:New conceptual insights into controlling the surface processes

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Nano Research 2022年第2期15卷 1260-1268页

作者： Gurvinder Singh Hesamodin Jami Pooria Lesani Shubhayan B.hattacharya Yogambha Ramaswamy Prem BBisht Hala Zreiqat ARC Centre for Innovative bioengineering Tissue Engineering and Biomaterials Research UnitSydney Nano Institute and the School oj Biomedical EngineeringThe University of SydneyNSW 2008Australia Department of Physics Indian Institute of Technology MadrasChennaiIndia

Understanding the surface processes(deposition and surface diffusion)that occur at or close to the surface of growing nanoparticles is important for fabricating reproducibly stellated or branched gold nanoparticles with precise control over arm length and spatial orientation of arms around the *** employing a simple seed-mediated strategy,we investigate the key synthetic variables for precise tuning of in situ surface processes(competition between the deposition and surface diffusion).These variables include the reduction rate of a reaction,the packing density of molecules/ions on the high surface energy facets,and *** a result,the thermodynamically stabilized nanoparticles(cuboctahedron and truncated cube)and kinetic products(cube,concave cube,octapod,stellated octahedron,and rhombic dodecahedron)in different sizes with high quantitative shape yield(>80%)can be obtained depending on the reduction rate of reaction and the packing density of molecules/*** computer simulation,we studied the stability of stellated(branched structure)and non-stellated(non-branched structure)gold nanoparticles at high *** construct a morphology phase diagram by varying different synthetic parameters,illustrating the formation of both stellated and non-stellated gold nanoparticles in a range of reaction *** stellated gold nanoparticles display shape-dependent optical properties and can be self-assembled into highly ordered superstructures to achieve an enhanced plasmonic *** strategy can be applied to other metal systems,allowing for the rational design of advanced new stellated metal nanoparticles with fascinating symmetry dependent plasmonic,catalytic,and electronic properties for technological applications.

关键词： surface diffusion shape control stellated nanoparticles self-assembly nanoplasmonics octapod stellated octahedron

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Mesoporous carbon with large pores as anode for Na-ion batteries

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Chinese Science Bulletin 2014年第18期59卷 2186-2190页

作者： Jian Liu Hao Liu Tianyu Yang Guoxiu Wang Moses O.Tade Department of Chemical Engineering Curtin UniversityPerthWA 6845Australia ARC Centre of Excellence for Functional Nanomaterials Australian Institute of Bioengineering and NanotechnologyThe University of QueenslandBrisbaneQLD 4072Australia Department of Chemistry and Forensic Science University of Technology SydneyBroadwaySydneyNSW 2007Australia

Sodium ion(Na+)batteries have attracted increased attention for energy storage owing to the natural abundance and low cost of ***,we report the synthesis of mesoporous carbon with large pores as anode for Na-ion *** mesoporous carbon was obtained by carbonization and dense packing of 50 nm resorcinol and formaldehyde spheres synthesized through an extension Sto¨ber *** work demonstrates that replacement of lithium by sodium using large pore carbon as anode might offer an alternative route for rechargeable batteries.

关键词：钠离子电池毛孔粗大碳化介孔 Na 阳极可充电电池天然丰度

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Polymer-based synthetic oncolytic virus-like nanoparticles for cancer immunotherapy

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Science China Chemistry 2023年第12期66卷 3576-3586页

作者： Yuxi Gao Hanqin Zhao Jiayu Zhao Sheng Ma Xinghui Si Liping Liu Ruirui Qiao Wantong Song Xuesi Chen State Key Laboratory of Supramolecular Structure and Materials College of ChemistryJilin UniversityChangchun 130012China Key Laboratory of Polymer Ecomaterials Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China School of Applied Chemistry and Engineering University of Science and Technology of ChinaHefei 230026China australian institute of bioengineering and Nanotechnology The University of QueenslandBrisbaneQueensland 4072Australia Jilin Biomedical Polymers Engineering Laboratory Changchun 130022China

Oncolytic viruses have emerged as new powerful therapeutic agents for cancer therapy by specifically lysing cancer cells while activating innate immune responses at the same ***,due to the thorny issues of safety concerns and host immune reaction,the clinical application of oncolytic viruses is still ***,we report a rationally designed oncolytic virus-like nanoparticles(OV-NPs)composed of stimulator of interferon genes(STING)-stimulating polymer loaded with therapeutic genes for cancer *** injection into tumor,the OV-NPs carrying OX40L plasmid could reprogram tumor cells to express OX40L immune checkpoint molecules and activate the STING pathway for cooperatively enhancing antitumor immunity,with a tumor suppression rate of 92.3%in B16F10 tumor model and 78.7%in MC38 tumor model without causing any *** OV-NPs could be further applied in carrying other plasmids(IL-12)and utilization in gene combination *** study should inspire designing synthetic OV-NPs as alternative strategies for extending oncolytic virus application in cancer immunotherapy.

关键词： oncolytic virus STING pathway gene delivery nanoparticles bioactive materials

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Generation of a human embryonic stem cell line stably expressing high levels of the fluorescent protein mCherry

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World Journal of Stem Cells 2012年第7期4卷 71-79页

作者： Dmitry A Ovchinnikov Jennifer P Turner Drew M Titmarsh Nilay Y Thakar Dong Choon Sin Justin J Cooper-White Ernst J Wolvetang Stem Cell Engineering Group Australian Institute for Bioengineering and NanotechnologyUniversity of QueenslandBrisbane 4072QueenslandAustralia Tissue Engineering and Microfluidics Laboratory Australian Institute for Bioengineering and NanotechnologyUniversity of QueenslandBrisbane 4072QueenslandAustralia School of Chemical Engineering University of Queensland Brisbane 4072QueenslandAustralia

AIM:The generation and characterization of a human embryonic stem cell (hESC) line stably expressing red fluorescent mCherry protein. METHODS:Lentiviral transduction of a ubiquitously-expressed human EF-1α promoter driven mCherry transgene was performed in MEL2 hESC. Red fluore-scence was assessed by immunofluorescence and flow cytometry. Pluripotency of stably transduced hESC was determined by immunofluorescent pluripotency marker expression, flow cytometry, teratoma assays andembryoid body-based differentiation followed by reverse transcriptase-polymerase chain reaction. Quantification of cell motility and survival was performed with time lapse microscopy. RESULTS:Constitutively fluorescently-labeled hESCs are useful tools for facile in vitro and in vivo tracking of survival, motility and cell spreading on various surfaces before and after differentiation. Here we describe the generation and characterization of a hESC line (MEL2) stably expressing red fluorescent protein, mCherry. This line was generated by random integration of a fluorescent protein-expressing cassette, driven by the ubiquitously-expressed human EF-1α promoter. Stably transfected MEL2-mCherry hESC were shown to express pluripo-tency markers in the nucleus (POU5F1/OCT4, NANOG and SOX2) and on the cell surface (SSEA4, TRA1-60 and TG30/CD9) and were shown to maintain a normal karyotype in long-term (for at least 35 passages) culture. MEL2-mCherry hESC further readily differentiated into representative cell types of the three germ layers in embryoid body and teratoma based assays and, importantly, maintained robust mCherry expression throughout differentiation. The cell line was next adapted to singlecell passaging, rendering it compatible with numerous bioengineering applications such as measurement of cell motility and cell spreading on various protein modified surfaces, quantification of cell attachment to nanoparticles and rapid estimation of cell survival. CONCLUSION:The MEL2-mCherry hESC line c

关键词： Human embryonic stem cells Fluorescent marker mCherry Pluripotency Cellular motility

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Strong optical nonlinearities of self-assembled polymorphic microstructures of phenylethynyl functionalized fluorenones

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Chinese Chemical Letters 2018年第2期29卷 297-300页

作者： Xinyue Li Sergey Semin Leandro A. Estrada Chunqing Yuan Yulong Duan Jonathan Cremers Paul Tinnemans Paul Kouwer Alan E. Rowan Theo Rasing Jialiang Xu School of Chemical and Engineering Technology Tianjin University Tianjin 300350 China institute for Molecules and Materials (IMM) Radboud University 6525 A J Nijrnegen The Netherlands Center for Photochemical Sciences Bowling Green State University Bowling Green OH 43403 USA Solvay Specialty Polymers Alpharetta CA 30005 USA australian institute for bioengineering and Nanotechnology (AIBN) The University of Queensland Brisbane OLD 4072 Australia

Highly efficient nonlinear optical（NLO） materials with well-defined architectures in the wavelength and subwavelength length scales are of particular importance for next generation of integrated photonic circuits. Fluorenone analogues have been demonstrated to be promising candidates as building blocks for assembly of organic NLO materials thanks to their synergistic supramolecular interactions and brilliant optical properties. Here we have studied the polymorphs of a phenylethynyl functionalized fluorenone derivative, and their controlled self-assembly for microstructures with different morphologies. These polymorphic microcrystals exhibit very distinctive NLO properties, highly related to their supramolecular and electronic structures.

关键词： Nonlinear optics Second harmonic generation Two-photon excited fluorescence Transition dipole Fluorenone

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Diffusion of lithium ions in Lithium-argyrodite solid-state electrolytes

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npj Computational Materials 2020年第1期6卷 326-335页

作者： Ardeshir Baktash James C.Reid Tanglaw Roman Debra J.Searles Centre for Theoretical and Computational Molecular Science Australian Institute for Bioengineering and NanotechnologyThe University of QueenslandSt Lucia 4072 QLDAustralia School of Mathematics and Physics The University of QueenslandSt Lucia 4072 QLDAustralia School of Physics The University of SydneyCamperdown 2006 NSWAustralia School of Chemistry and Molecular Biosciences The University of QueenslandSt Lucia 4072 QLDAustralia

The use of solid-state electrolytes to provide safer,next-generation rechargeable batteries is becoming more feasible as materials with greater stability and higher ionic diffusion coefficients are ***,accurate determination of diffusion coefficients in solids is problematic and reliable calculations are highly sought-after to understand how their structure can be modified to improve their *** this paper we compare diffusion coefficients calculated using nonequilibrium and equilibrium ab initio molecular dynamics simulations for highly diffusive solid-state electrolytes,to demonstrate the accuracy that can be ***,we show that ab initio nonequilibrium molecular dynamics can be used to determine diffusion coefficients when the diffusion is too slow for it to be feasible to obtain them using ab initio equilibrium simulations.

关键词： diffusion nonequilibrium feasible

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Analyzing and engineering of the biosynthetic pathway of mollemycin A for enhancing its production

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Synthetic and Systems Biotechnology 2024年第3期9卷 445-452页

作者： Shixue Jin Huixue Chen Jun Zhang Zhi Lin Xudong Qu Xinying Jia Chun Lei School of Pharmacy Fudan UniversityShanghai201203China State Key Laboratory of Microbial Metabolism and School of Life Sciences and Biotechnology Shanghai Jiao Tong UniversityShanghai200240China australian institute for bioengineering and Nanotechnology The University of QueenslandSt LuciaQLD4072Australia Department of Biochemistry National University of Singapore14 Medical DrSingapore117599

Mollemycin A(MOMA)is a unique glyco-hexadepsipeptide-polyketide that was isolated from a Streptomyces *** from the australian marine *** exhibits remarkable inhibitory activity against both drug-sensitive and multidrug-resistant malaria *** MOMA through structural modifications or product enhancements is necessary for the development of effective ***,modifying MOMA using chemical approaches is challenging,and the production titer of MOMA in the wild-type strain is *** study identified and characterized the biosynthetic gene cluster of MOMA for the first time,proposed its complex biosynthetic pathway,and achieved an effective two-pronged enhancement of MOMA *** fermentation medium was optimized to increase the yield of MOMA from 0.9 mg L^(-1)to 1.3 mg L^(-1),a 44%***,a synergistic mutant strain was developed by deleting the momB3 gene and overexpressing momB2,resulting in a 2.6-fold increase from 1.3 mg L^(-1)to 3.4 mg L^(-1).These findings pave the way for investigating the biosynthetic mechanism of MOMA,creating opportunities to produce a wide range of MOMA analogues,and developing an efficient strain for the sustainable and economical production of MOMA and its analogues.

关键词： Mollemycin A Gene cluster Biosynthetic pathway Biosynthetic engineering Production enhancement Azinothricin

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Efficient photocatalytic destruction of recalcitrant micropollutants using graphitic carbon nitride under simulated sunlight irradiation

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Environmental Science and Ecotechnology 2021年第1期5卷 30-40页

作者： Jiexi Zhong Hui Jiang Zhiliang Wang Zhigang Yu Lianzhou Wang Jochen F.Mueller Jianhua Guo Advanced Water Management Centre The University of QueenslandSt.LuciaBrisbaneQLD4072Australia Queensland Alliance for Environmental Health Sciences The University of QueenslandWoolloongabbaQLD4102Australia Nanomaterials Centre School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology(AIBN)The University of QueenslandSt LuciaQLD4072Australia

The ubiquity of micropollutants(MPs)in aquatic environments has attracted increasing concern for public health and ecological *** to conventional biological treatment,photocatalytic processes show more efficiency in degrading MPs,but they require expensive materials and complicated synthesis *** study developed an economic photocatalytic process to degrade *** synthesized urea-based graphitic carbon nitride(g-C_(3)N_(4))by a facile one-step pyrolysis method and evaluated the photocatalytic efficiency of carbamazepine(CBZ).Under simulated solar irradiation,g-C_(3)N_(4) could achieve 100% removal efficiency of 0.1 mg/L CBZ in spiked wastewater effluent within 15 min,and 86.5% removal efficiency in wastewater influent after 20 min of *** porous structure of g-C_(3)N_(4) promoted effective charge separation and mass transport of CBZ near the catalyst surface,enabling a high kinetic rate(0.3662 min^(-1)).Reactive oxygen species trapping experiments revealed that superoxide radicals(O_(2)^(·-))and holes(h^(+))were the major active *** paramagnetic resonance(EPR)further confirmed the presence of O_(2)^(·-),·OH,^(1)O_(2) and *** pH,light intensity and initial CBZ concentration were found to have significant impacts on the removal efficiency of *** reaction intermediates were identified and the degradation pathway was *** MPs were selected to further demonstrate photocatalytic efficiency of g-C_(3)N_(4).The facile synthesis,superior efficiency,and versatility of g-C_(3)N_(4) make it a promising catalyst for application in tertiary wastewater treatment processes.

关键词： Graphitic carbon nitride(g-C_(3)N_(4)) Photocatalysis Micropollutants Reactive oxygen species(ROS) Advanced oxidation processes(AOPs)

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High performance flexible metal oxide/silver nanowire based transparent conductive films by a scalable lamination-assisted solution method

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Journal of Materiomics 2017年第1期3卷 77-82页

作者： Hua Yu Andrew J.Stapleton David A.Lewis Lianzhou Wang a Nanomaterials Centre School of Chemical Engineering and Australian Institute for Bioengineering and NanotechnologyThe University of QueenslandBrisbaneQLD4072Australia Flinders Centre for NanoScale Science and Technology Flinders UniversityGPO Box 2100AdelaideSA 5001Australia CSIRO Materials Science and Engineering Private Bag 33Clayton SouthVictoria 3169Australia

Flexible MoO_(3)/silver nanowire(AgNW)/MoO_(3)/TiO_(2)/Epoxy electrodes with comparable performance to ITO were fabricated by a scalable solution-processed method with lamination assistance for transparent and conductive *** nanoparticle-based electrodes were also prepared for *** a simple spin-coating and lamination-assisted planarization method,a full solution-based approach allows preparation of AgNW-based composite electrodes at temperatures as low as 140℃.The resulting flexible AgNW-based electrodes exhibit higher transmittance of 82%at 550 nm and lower sheet resistance about 12-15Ωsq^(-1),in comparison with the values of 68%and 22-25Ωsq^(-1) separately for AgNP based *** electron microscopy(SEM)and Atomic force microscopy(AFM)reveals that the multi-stacked metal-oxide layers embedded with the AgNWs possess lower surface roughness(<15 nm).The AgNW/MoO_(3) composite network could enhance the charge transport and collection efficiency by broadening the lateral conduction range due to the built of an efficient charge transport network with long-sized *** consideration of the manufacturing cost,the laminationassisted solution-processed method is cost-effective and scalable,which is desire for large-area *** in view of the materials cost and comparable performance,this AgNW-based transparent and conductive electrodes is potential as an alternative to ITO for various optoelectronic applications.

关键词： Silver nanowires Transparent conductive film MoO_(3) Solution processed Lamination

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