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A polyelectrolyte-induced highly processable pigment-like photonic crystal ink

Progress in Natural science:Materials International 2024年第5期34卷 1049-1056页

作者： Guangxin Tan Wenxin Fan Zhihong Nie Kunyan Sui State Key Laboratory of Bio-Fibers and Eco-Textiles College of Materials Science and Engineering Shandong Collaborative Innovation Center of Marine Biobased Fibers and Ecological Textiles Institute of Marine Bio-based Materials Qingdao University School State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular Science Fudan University

Developing a straightforward strategy for constructing highly processable photonic crystals(PCs) is crucial for various applications, yet remains a challenge. Here, we present a simple polyelectrolyte-induced self-assembly strategy for producing novel photonic crystal(PC) inks with outstanding processing flexibility by adding the polyelectrolytes into the ultralow concentration of colloidal nanoparticle solution. The polyelectrolyte can cover the nanoparticles through the hydrogen bond interaction to induce the aggregation and mutual repulsion of them simultaneously, enabling the self-assembly of ultralow concentration(0.01–1.0 v/v%) of nanoparticles into shortrange ordered arrays with angle-independent structural colors. The resulting PC inks present unprecedented pigment-like color modulation capacity, as well as ultrahigh freedom in processing methods due to the fact that the rheological behaviors of PC inks can be widely adjusted by varying the properties of ***, the PC inks can be easily shaped into complex and exquisite multicolor patterns/3D structures using various techniques, including injection molding, writing, drawing, and 3D printing. This general approach paves the way for quick and scalable production of advanced PC materials deeply required in practical applications.

关键词： Polyelectrolyte Photonic crystals Self-assembly Multicolor patterns Processing flexibility

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Construction of 3D Shape-Changing Hydrogels via Light-Modulated Internal Stress Fields

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Energy & Environmental Materials 2023年第3期6卷 177-183页

作者： Zihan Xu Wenxin Fan Jinghua Duan Yanzhi Xia Zhihong Nie Kunyan Sui State Key Laboratory of Bio-Fibers and Eco-Textiles College of Materials Science and EngineeringShandong Collaborative Innovation Center of Marine Biobased Fibers and Ecological TextilesInstitute of Marine Bio-based MaterialsQingdao UniversityQingdao 266071China State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular ScienceFudan UniversityShanghai 200438China

The 3D shape-changing hydrogels are highly pursued for numerous ***,up to now,the construction of complex 3D shape-changing hydrogels remains a *** reported design strategies are mainly applied to fabricate 2D ones by introducing anisotropic microstructures into hydrogel sheets/***,we present a convenient photolithography strategy for constructing complex 3D shape-changing hydrogels by simultaneously modulating anisotropic microstructures and internal stress fields of gel *** the precursor solution containing ultraviolet(UV)absorber is irradiated by single-side UV light,the attenuated polymerization rate can cause the generation of asymmetric internal stress field in the resulting hydrogel *** the meantime,the directional diffusion of unpolymerized monomers allows for the formation of vertical gradient structure within ***,by applying different photomasks to modulate the local gradient structures and internal stress fields of the gel sheets,they can spontaneously transform into various complex 3D shape-changing hydrogels in the *** to the external stimuli,these 3D shape-changing hydrogels(e.g.,fighter plane,birdie,and multi-storey origami lattices)can deform in a novel 3D_(1)-to-3D_(2)-to-3D_(3)*** new design strategy contributes to the development of complex biomedical implants and soft robotics.

关键词： actuators anisotropic microstructure hydrogels internal stress shape transformation

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Gold nanoparticle-decorated MoSe_(2) nanosheets as highly effective peroxidase-like nanozymes for total antioxidant capacity assay

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Nano Research 2023年第5期16卷 7180-7186页

作者： Chengyi Hong Lingling Chen Jiayi Huang Yunling Shen Hongfen Yang Zhiyong Huang Ren Cai Weihong Tan College of Ocean Food and Biological Engineering Fujian Provincial Key Laboratory of Food Microbiology and Enzyme EngineeringJimei UniversityXiamen 361021China Molecular Science and Biomedicine Laboratory State Key Laboratory for Chemo/Bio-Sensing and ChemometricsCollege of Chemistry and Chemical EngineeringCollege of Biology College of Material Science and EngineeringCollaborative Research Center of Molecular Engineering for TheranosticsHunan UniversityChangsha 410082China University of Texas at Austin AustinTX 78712USA

A visual colorimetric detection strategy is reported for total antioxidant capacity(TAC)assay by using 3,3',5,5'-tetramethylbenzidine(TMB)oxidation as chromogenic substrate based on gold nanoparticle-decorated MoSe_(2) nanosheets(Au@MoSe_(2)).Au@MoSe_(2) nanostructures exhibit high peroxidase-like activity and can catalyze H_(2)O_(2)to oxidize *** on inhibition effect of ascorbic acid(AA)on TMB oxidation,a facile and sensitive colorimetric method was developed for AA *** optimal conditions,the proposed method showed a sensitivity for AA in a concentration range from 2 to 120μM and limit of detection was 0.41μ***,the method was employed for TAC assay in actual samples,including commercial beverages and vitamin C *** work represents a model in nanostructure design and will lead to further development of TAC assay in evaluation of antioxidant food quality.

关键词： nanozymes peroxidase mimics Au@MoSe_(2)nanostructures total antioxidant capacity assay

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Platinum modification of metallic cobalt defect sites for efficient electrocatalytic oxidation of 5-hydroxymethylfurfural

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Journal of Energy Chemistry 2025年第2期101卷 463-473,I0010页

作者： Haoyu Zhan Baixue Cheng Yankun Lu Danning Xing Xingshuai Lv Huining Huang Thomas Frauenheim Tao Wang Peng Zhou State Key Laboratory of Bio-fibers and Eco-textiles College of Materials Science and EngineeringCollaborative Innovation Center of Shandong Marine Biobased Fibers and Ecological TextilesInstitute of Marine Biobased MaterialsQingdao UniversityQingdao 266071ShandongChina Shandong Institute of Advanced Technology Jinan 250100ShandongChina College of Chemistry and Chemical Engineering Ocean University of ChinaQingdao 266100ShandongChina Tianjin Key Laboratory of Advanced Functional Porous Materials Institute for New Energy Materials & Low-Carbon TechnologiesSchoolof Materials Science and Engineering Tianjin University of TechnologyTianjin 300384China School of Science Constructor UniversityBremen 28759Germany Beijing Computational Science Research Center Beijing 100193China College of Chemistry and Molecular Engineering Qingdao University of Science and TechnologyQingdao 266042ShandongChina

Co_(3)O_(4)possesses both direct and indirect oxidation effects and is considered as a promising catalyst for the oxidation of 5-hydroxymethylfurfural(HMF).However,the enrichment and activation effects of Co_(3)O_(4)on OH-and HMF are weak,which limits its further *** defect engineering can regulate the electronic structure,optimize the adsorption of intermediates,and improve the catalytic activity by breaking the symmetry of the material,which is rarely involved in the upgrading of *** this work,we prepare Co_(3)O_(4)with metal defects and load the precious metal platinum at the defect sites(PtVco).The results of in-situ characterizatio ns,electrochemical measurements,and theoretical calculations indicate that the reduction of Co-Co coordination number and the formation of Pt-Co bond induce the decrease of electron filling in the antibonding orbitals of Co *** resulting upward shift of the d-band center of Co combined with the characteristic adsorption of Pt species synergically enhances the enrichment and activation of organic molecules and OH species,thus exhibiting excellent HMF oxidation activity(including a lower onset potential(1.14 V)and 19 times higher current density than pure Co_(3)O_(4)at 1.35 V).In summary,this work explores the adsorption enhancement mechanism of metal defect sites modified by precious metal in detail,provides a new option for improving the HMF oxidation activity of cobalt-based materials,broadens the application field of metal defect based materials,and gives an innovative guidance for the functional utilization of metal defect sites in biomass conversion.

关键词： Electrocatalysis biomass upgrading Metallic defect Coordination environment Adsorption enhancement

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Versatile and efficient mammalian genome editing with Type Ⅰ-C CRISPR System of Desulfovibrio vulgaris

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science China(Life sciences) 2024年第11期67卷 2471-2487页

作者： Pan Li Dingcai Dong Fei Gao Yuyang Xie Honglin Huang Siwei Sun Zhao Ma Cheng He Jinsheng Lai Xuguang Du Sen Wu State Key Laboratory of Animal Biotech Breeding College of Biological SciencesNational Engineering Laboratory for Animal BreedingFrontiers Science Center for Molecular Design BreedingChina Agricultural UniversityBeijing 100193China College of Veterinary Medicine China Agricultural UniversityBeijing 100193China Sanya Institute of China Agricultural University Sanya 572025China State Key Laboratory of Maize Bio-breeding National Maize Improvement CenterDepartment of Plant Genetics and BreedingChina Agricultural UniversityBeijing 100193China Frontiers Science Center for Molecular Design Breeding China Agricultural UniversityBeijing 100193China Center for Crop Functional Genomics and Molecular Breeding China Agricultural UniversityBeijing 100193China

CRISPR-Cas tools for mammalian genome editing typically rely on single Cas9 or Cas12a *** type I CRISPR systems in Class I may offer greater specificity and versatility,they are not well-developed for genome ***,we present an alternative type I-C CRISPR system from Desulfovibrio vulgaris(Dvu)for efficient and precise genome editing in mammalian cells and *** optimized the Dvu type I-C editing complex to generate precise deletions at multiple loci in various cell lines and pig primary fibroblast cells using a paired PAM-in crRNA *** edited pig cells can serve as donors for generating transgenic cloned *** Dvu type I-C editor also enabled precise large fragment replacements with homology-directed ***,we adapted the Dvu-Cascade effector for cytosine and adenine base editing,developing Dvu-CBE and Dvu-ABE *** systems efficiently induced C-to-T and A-to-G substitutions in human genes without double-strand ***-target analysis confirmed the high specificity of the Dvu type I-C *** findings demonstrate the Dvu type I-C editor′s potential for diverse mammalian genome editing applications,including deletions,fragment replacement,and base editing,with high efficiency and specificity for biomedicine and agriculture.

关键词： type I CRISPR systems Desulfovibrio vulgaris Dvu type I-C editor define deletion large fragment replacement base editing

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Striking a growth–defense balance:Stress regulators that function in maize development

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Journal of Integrative Plant biology 2024年第3期66卷 424-442页

作者： Shiyi Xie Hongbing Luo Wei Huang Weiwei Jin Zhaobin Dong Maize Engineering and Technology Research Center of Hunan Province College of AgronomyHunan Agricultural UniversityChangsha 410128China State Key Laboratory of Maize Bio-breeding National Maize Improvement CenterFrontiers Science Center for Molecular Design BreedingChina Agricultural UniversityBeijing 100193China Tianjin Key Laboratory of Intelligent Breeding of Major Crops Fresh Corn Research Center of BTHCollege of Agronomy&Resources and EnvironmentTianjin Agricultural UniversityTianjin 300384China

Maize(Zea mays)cultivation is strongly affected by both abiotic and biotic stress,leading to reduced growth and *** has recently become clear that regulators of plant stress responses,including the phytohormones abscisic acid(ABA),ethylene(ET),and jasmonic acid(JA),together with reactive oxygen species(ROS),shape plant growth and *** their well established functions in stress responses,these molecules play crucial roles in balancing growth and defense,which must be finely tuned to achieve high yields in crops while maintaining some level of *** this review,we provide an in-depth analysis of recent research on the developmental functions of stress regulators,focusing specifically on *** unraveling the contributions of these regulators to maize development,we present new avenues for enhancing maize cultivation and growth while highlighting the potential risks associated with manipulating stress regulators to enhance grain yields in the face of environmental challenges.

关键词： stress regulators maize development ABA ET JA ROS

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Sub-2 nm IrO_(2)/Ir nanoclusters with compressive strain and metal vacancies boost water oxidation in acid

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Nano Research 2023年第1期16卷 334-342页

作者： Zhijuan Liu Guangjin Wang Jinyu Guo Shuangyin Wang Shuang-Quan Zang Henan Key Laboratory of Crystalline Molecular Functional Materials Henan International Joint Laboratory of Tumor Theranostical Cluster MaterialsGreen Catalysis Centerand College of ChemistryZhengzhou UniversityZhengzhou 450001China Hunan University State Key Laboratory of Chem/Bio-sensing and ChemometricsCollege of Chemistry and Chemical EngineeringChangsha 410082China School of Materials Science and Energy Engineering Foshan UniversityFoshan 528000China

IrO_(2)exhibits good stability but limited electrocatalytic activity for oxygen evolution reaction in *** engineering is an effective strategy to improve the intrinsic ability of electrocatalysts by tailoring their electronic ***,we have successfully synthesized IrO_(2)/Ir heterophase with compressive strain and metal vacancies via a simple substitution-etching *** virtue of the solubility of Cr in strong alkali,metal vacancies could be formed at surface after etching Cr-doped IrO_(2)/Ir in alkali,which leaded to modulated electronic ***,the substitution of Cr with smaller atom radius would induce the formation of compressive strain and the relocated atoms made the d-band center *** the regulated electronic structure and tuned d-band center,the obtained electrocatalyst only needed 285 mV to reach 10 mA·cm^(−2)in 0.1 M *** kinetic has been rapidly accelerated as indicated by the smaller Tafel slope and charge transfer *** calculations revealed that the d-band center and charge density distribution have been regulated with the introduction of defects in IrO_(2)/Ir,which significantly decreased the free energy barrier of rate determining *** work provides a valuable reference to design effective and defects-rich electrocatalysts.

关键词： IrO_(2)/Ir nanoclusters compressive strain metal vacancies d-band center water oxidation in acid

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Balancing sub‐reaction activity to boost electrocatalytic urea synthesis using a metal‐free electrocatalyst

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Carbon Energy 2023年第10期5卷 40-49页

作者： Chen Chen Shuang Li Xiaorong Zhu Shuowen Bo Kai Cheng Nihan He Mengyi Qiu Chao Xie Dezhong Song Youzhen Liu Wei Chen Yafei Li Qinghua Liu Conggang Li Shuangyin Wang State Key Laboratory of Chem/Bio‐Sensing and Chemometrics Advanced Catalytic Engineering Research Center of the Ministry of EducationCollege of Chemistry and Chemical EngineeringHunan UniversityChangshaChina College of Chemistry and Materials Science Nanjing Normal UniversityNanjingChina National Synchrotron Radiation Laboratory University of Science and Technology of ChinaHefeiChina Key Laboratory of Magnetic Resonance in Biological Systems State Key Laboratory of Magnetic Resonance and Atomic and Molecular PhysicsNational Center for Magnetic Resonance in Wuhan Collaborative Innovation Center of Chemistry for Life SciencesWuhan Institute of Physics and MathematicsChinese Academy of SciencesWuhanChina

Electrocatalytic urea synthesis via coupling of nitrate with CO_(2)is considered as a promising alternative to the industrial urea synthetic ***,the requirement of sub-reaction(NO_(3)RR and CO_(2)RR)activities for efficient urea synthesis is not clear and the related reaction mechanisms remain ***,the construction,breaking,and rebuilding of the sub-reaction activity balance would be accompanied by the corresponding regulation in urea synthesis,and the balance of sub-reaction activities was proven to play a vital role in efficient urea *** rational design,a urea yield rate of 610.6 mg h−1 gcat.−1 was realized on the N-doped carbon electrocatalyst,superior to that of noble-metal *** on the operando SRFTIR measurements,we proposed that urea synthesis arises from the coupling of^(*)NO and^(*)CO to generate the key intermediate of^(*)*** work provides new insights and guidelines into urea synthesis from the aspect of activity balance.

关键词： activity balance C-N coupling electrocatalysis metal‐free urea synthesis

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Maize Prolonged Prophase 1 is essential for meiotic progression in pollen mother cells

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The Crop Journal 2025年第1期13卷 170-180页

作者： Lingling Pan Yunfei Li Xueli An Zhiqi Xin Zhaobin Dong Weiwei Jin Wei Huang State Key Laboratory of Maize Bio-breeding National Maize Improvement CenterFrontiers Science Center for Molecular Design BreedingDepartment of Plant Genetics and BreedingChina Agricultural UniversityBeijing 100193China National Engineering Laboratory of Crop Stress Resistance Breeding School of Life SciencesAnhui Agricultural UniversityHefei 230036AnhuiChina Research Institute of Biology and Agriculture University of Science and Technology BeijingBeijing 100083China Tianjin Key Laboratory of Intelligent Breeding of Major Crops Fresh Corn Research Center of BTHTianjin Agricultural UniversityTianjin 300384China

Meiosis,a critical process for sexual reproduction,requires precise regulation to ensure the correct progression of meiotic *** yeast and animals,errors in meiotic recombination and homologous chromosomes synapsis bring a surveillance mechanism named pachytene checkpoint to prevent pachytene ***,most plant mutants with defects in meiotic prophase I continue cell cycle progression,which hindered the characterization of factors controlling the prophase I to metaphase I ***,we characterized a male-sterile mutant in maize,prolonged prophase1(pp1),which exhibited pachytene and diakinesis arrest in male meiosis,and abnormal chromatin *** mapbased cloning,the PP1 gene was isolated as a PHD family transcription factor,and its transcripts of PP1 were preferentially accumulated in tapetum and male germline cells during *** analysis of the pp1 mutant revealed downregulation of genes associated with chromatin assembly,cell cycle,and male meiosis,correlating with observed meiotic arrest and chromatin condensation *** findings highlight the role of PP1 in maize microsporogenesis,and providing more insights into the mechanisms regulating the meiotic progression in maize.

关键词： Maize Male sterile Meiosis PHD-finger protein

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Regulating the microenvironment of catalytic sites by atomically precise and charge tunable Au25 nanoclusters for efficient5-hydroxymethylfurfural electro-oxidation

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science China Chemistry 2024年

作者： Zhijuan Liu Sha-Sha Cui Lu-Yu Liu Fen Wang Guangjin Wang Zhijie Kong Xiao-Fei Liu Xin Zhang Haisong Feng Ren-Wu Huang Shuangyin Wang Shuang-Quan Zang Henan Key Laboratory of Crystalline Molecular Functional Materials Green Catalysis Center and College of ChemistryZhengzhou University School of Materials Science and Energy Engineering Foshan University State Key Laboratory of Chemical Resource Engineering Beijing Advanced Innovation Center for Soft Matter Science and EngineeringBeijing University of Chemical Technology State Key Laboratory of Chem/Bio-sensing and Chemometrics College of Chemistry and Chemical Engineering Hunan University

Electrochemical biomass oxidation has garnered considerable attention due to its low energy consumption and the production of high-value *** metal nanoparticle catalysts have been widely explored in electrochemical 2,5-hydroxymethylfurfural oxidation reaction （HMFOR） but limited by their inhomogeneity to build a clear structure-ability relationship at atomic *** precise metal nanoclusters with well-defined composition,high purity and unique physichemical property are one kind of ideal model *** this work,we regulate the microenvironment of catalytic sites in NiSe2utilizing atomically precise and charge tunnable *** electrochemical results reveal that after the modification of Au25nanoclusters,the HMFOR ability of NiSe2could be *** them,the NiSe2modified with Au-25clusters displayed the best electrocatalytic ability,in which the electrons were preferred to transfer from Au-25to NiSe2substrate resulting in the electrons accumulation at the electrocatalyst *** enhanced electrochemical performance of electrocatalyst can be attributed to two key factors:（1） enhanced adsorption ability towards HMF due to the strong interaction between electron enriched surface and electrophilic furan rings;（2） fast electron transfer at Au-25/NiSe2interface,resulting in the rapid structure evolution to form active NiOOH *** study serves as a valuable reference for designing highly efficient,atomically precise metal nanocluster electrocatalysts for biomass upgrading.

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