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Inorganic ionic polymerization:From biomineralization to materials manufacturing

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Nano Research 2024年第2期17卷 550-569页

作者： Yanhua Sang Kexin Qin Ruikang Tang zhaoming liu Department of Chemistry Zhejiang UniversityHangzhou 310058China

Biomineralization process regulates the growth of inorganic minerals by complex molecules,proteins,and cells,endowing bio-materials with marvels structures and excellent *** intricate structures and compositions found in biominerals have inspired scientists to design and synthesize numerous artificial biomimetic *** methodology for controlling the formation of inorganics plays a pivotal role in achieving biomimetic structures and ***,the current approach predominantly relies on the classical nucleation theory,which hinders the precise preparation of inorganic materials by replicating the biomineralization ***,the development of“inorganic ionic polymerization”strategy has enabled us to regulate the arrangement of inorganic ions from solution to solid phase,which establishes an artificial way to produce inorganic materials analogous to the biomineralization *** on inorganic ionic polymerization,a series of achievements have been realized for the biomimetic preparation,including moldable construction of inorganic materials,hard tissue regeneration,and high-performance biomimetic ***,the utilization of inorganic ionic polymerization has also facilitated the production of numerous advanced materials,including novel structures that exceed the current knowledge of materials *** inorganic ionic polymerization system provides new artificial strategies and methodologies for the controllable synthesis of inorganics,which mimics the biomineralization process,paving the way for the future development of more high-performance materials.

关键词： biomineralization inorganic ionic polymerization biomimetic materials crystal growth synthetic methodology

Making elastic ceramic plastic by hybrid molecules

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Chinese Journal of Structural Chemistry 2023年第7期42卷 1-2页

作者： Weifeng Fang zhaoming liu Department of Chemistry Zhejiang UniversityHangzhou310027China

Transformations of molecules to bulk materials constitute a unique direction for the rational design of materials,known as bottom-up syntheses[1].The regulation of the structure and performance of materials could be achieved by altering the composition and structure of ***-inorganic hybrid materials have played indispensable roles as mechanical,optical,and electronic materials[2],but isolated organic-inorganic hybrid molecules(currently only limited in covalent compounds)are seldom presented throughout the preparation of hybrid materials.

关键词： materials. inorganic rational

Microstructure and tensile properties of thixo-diecast AZ91D magnesium alloy

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China Foundry 2013年第5期10卷 288-293页

作者： Ai Xiulan Quan Gaofeng liu zhaoming Gao Hong Liaoning Province Laboratory of Key Material for Railway Dalian Jiaotong University School of Material Science and Engineering Southwest Jiaotong University

The thixo-diecasting （TDC） process is the combination of semi-solid billet preparation technology and die casting technology. The TDC process not only keeps the characteristics of thixo-forming but also has high efficiency and low cost. In the present work, the microstructures and mechanical properties of an AZ91D magnesium alloy prepared by the thixo-diecasting （TDC） process were characterized in as-cast condition. The TDC alloy produced exhibits a unique microstructure containing a-Mg solid solution and/3-Mg^TAI^2 intermetallic compound, and there are some small droplets and a small gray globule with eutectic structure in the primary a-Mg grains. The ultimate tensile strength and elongation of the TDC alloy also increase in comparison with other processes, such as thixocasting. Fracture surface observation shows that a crack mainly originates from the brittle fracture of the eutectic phases. The deformation of ductile a-Mg phase provides the TDC alloy with the main strain.

关键词： AZ91D magnesium alloys semi-solid thixo-diecasting microstructure tensile properties

Effects of mixed inoculation of Leuconostoc citreum and Lactobacillus plantarum on suansun(Sour bamboo shoot)fermentation

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Food Bioscience 2022年第3期47卷 765-775页

作者： Honghao Lu Cuiji Huang Kena Yu zhaoming liu College of Biological and Chemical Engineering Guangxi University of Science and TechnologyLiu Zhou545006PR China

To study the effects of mixed starter consisted of different fermentative type of lactic acid bacteria(LAB)on the fermentation of suansun,two lactic acid bacteria(Leuconostoc citreum NM-12 and Lactobacillus plantarum L01)isolated from Chinese traditional fermented vegetable were used in the preparation of *** fermentation was carried out at ambient temperature(around 25℃)for 96 h by inoculating different mixing ratios of LAB(inoculated fermentation)or using natural microbes(natural fermentation).The changes of pH,titratable acid(TA),microbe communities,free sugars,organic acids,nitrite and volatile compounds during fermentation were *** treated with high Leuconostoc citreum ratio inoculation exhibited a quickly change in pH and TA,resulting from the rapid increase in the number of viable cells,at the early stage of fermentation and produced more mannitol(0.12–0.46 mg/mL)and acetic acid(0.93–3.56 mg/mL).However,Suansun treated with high Lactobacillus plantarum ratio inoculation had lower pH and higher TA at the later stage of fermentation and produced more lactic acid(5.32–7.68 mg/mL).No mannitol was detected in suansun when only Lactobacillus plantarum was inoculated in *** p-cresol was produced in the inoculated fermentation with mixed starter culture,in addition to the production of ethyl acetate and 2.3-butanedione,which had a positive effect on the flavor of *** summary,this study demonstrated the application value of mixed starter consisted of different fermentative type of *** types and mixing ratios greatly affected the types and concentration of metabolites in suansun fermentation.

关键词： Leuconostoc citreum Lactobacillus plantarum Suansun Fermentation Inoculation

Waste acid recovery utilizing monovalent cation permselective membranes through selective electrodialysis

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Chinese Journal of Chemical Engineering 2024年第7期71卷 45-57页

作者： Yanran Zhu Yue Zhou Qian Chen Rongqiang Fu zhaoming liu Liang Ge Tongwen Xu Anhui Provincial Engineering Laboratory of Functional Membrane Materials and Technology Department of Applied ChemistrySchool of Chemistry and Materials ScienceUniversity of Science and Technology of ChinaHefei 230026China Key Laboratory of Charged Polymeric Membrane Materials of Shandong Province Shandong Tianwei Membrane Technology Co.Ltd.Weifang 261000China

Selective electrodialysis(SED)has surfaced as a highly promising membrane separation technique in the realm of acid recovery owing to its ability to effectively separate monovalent ions through the utilization of a potential ***,the current SED process is limited by conventional commercial monovalent cation permselective membranes(MCPMs).This study systematically investigates the use of an independently developed MCPM in the SED process for acid *** factors such as current density,volume ratio,initial ion concentration,and waste acid systems are *** independently developed MCPM offers several advantages over the commercial monovalent selective cation-exchange membrane(CIMS),including higher recovered acid concentration,better ion flux ratio,improved acid recovery efficiency,increased recovered acid purity,and higher current *** SED process with the MCPM achieves a recovered acid of 95.9%and a concentration of 2.3 mol·L^(–1) in the HCl/FeCl_(2) system,when a current density of 20 mA·cm^(-2) and a volume ratio of 1:2 are ***,in the H_(2)SO_(4)/FeSO_(4) system,a purity of over 99%and a concentration of 2.1 mol·L^(–1) can be achieved in the recovered *** study thoroughly examines the impact of operation conditions on acid recovery performance in the SED *** independently developed MCPM demonstrates outstanding acid recovery performance,highlighting its potential for future commercial utilization.

关键词： Selective electrodialysis Wastewater Monovalent cation permselective membranes Separation Recovery

Lithocarpins E-G, Potent Anti-Tumor Tenellone-Macrolides from the Deep-Sea Fungus Phomopsis lithocarpus FS508

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Chinese Journal of Chemistry 2021年第5期39卷 1104-1112页

作者： Jianlin Xu Yuchan Chen zhaoming liu Saini Li Yong Wang Yuhong Ren Hongxin liu Weimin Zhang State Key Laboratory of Applied Microbiology Southern China Guangdong Provincial Key Laboratory of Microbiol Culture Collection and ApplicationGuangdong Open Laboratory of Applied MicrobiologyGuangdong Institute of MicrobiologyGuangdong Academy of SciencesGuangzhouGuangdong 510070China State Key Laboratory of Bioreactor Engineering East China University of Science and TechnologyShanghai 200237China Key Laboratory of Synthetic Biology CAS Center for Excellence in Molecular Plant SciencesInstitute of Plant Physiology and EcologyChinese Academy of SciencesShanghai 200032China

Lithocarpins E-G,featuring a rare naturally-occurring highly oxygenated tenellone-macrolide skeleton,were isolated from the culture extract of a marine-derived fungus Phomopsis lithocarpus *** structures were fully elucidated by NMR and MS spectroscopic analyses and electronic circular dichroism *** 1-3 were evaluated for their in vitro cytotoxicities against HepG2,MCF-7,SF-268,as well as A549 cell lines,among which,compound 1 exhibited inhibitory activity against HepG2 cells with an IC_(50) value of 6.3 μmol/*** further mechanistic investigation demonstrated that lithocarpin E could cause the apoptosis of HepG2 cells through activation of p-ERK,Bax,and caspase-3 gene expressions.

关键词： Phomopsis lithocarpus FS508 Polyketides Structure elucidation Antitumor agents Apoptosis

Inorganic ionic polymerization:A bioinspired strategy for material preparation

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Biogeotechnics

Biogeotechnics 2023年第1期1卷 81-86页

作者： Jian Zhang Weifeng Fang zhaoming liu Ruikang Tang Department of Chemistry Zhejiang UniversityHangzhouZhejiang 310027China

Bioinspired materials with excellent properties have attracted intense interests of scientists,and the methodology for rationally design of these materials is crucially *** review briefly introduces our recent achievements on inorganic ionic polymerization for bioinspired material *** inorganic ionic polymerization realized the assembly of inorganic ions in a way similar to the polymerization in polymer chemistry,overcoming the limitation by classical nucleation *** enabled the moldable construction of inorganic minerals and even the reconstruction of enamel tissue,which commonly only achieved by *** the presence of organic molecules,the inorganic ionic polymerization could participate in the organic polymerization,resulting in hybrids with molecular-scaled organic-inorganic *** furthermore,under the regulation of bio-inspired molecules,the condensed state of the assembled inorganic ions could show unusual behaviors:such as adding the flexibility to commonly fractal inorganic minerals,and flowability to solid mineral *** enabled the production of flexible mineral materials as plastic substitute,and the extrusion forming of moldable minerals under room *** inorganic ionic polymerization demonstrated a promising way to synthesize inorganics in a more rational way,which may shed light on more advanced bio-inspired and biomimetic material.

关键词： Bioinspired materials Inorganic ionic polymerization Biomimetic repair Biomineralization Amorphous precursor

Amphichoterpenoids A-C,unprecedented picoline-derived meroterpenoids from the ascidian-derived fungus Amphichorda felina SYSU-MS7908

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Chinese Chemical Letters 2021年第6期32卷 1893-1896页

作者： Minghua Jiang Zhenger Wu Qilin Wu Huimin Yin Heng Guo Siwen Yuan zhaoming liu Senhua Chen Lan liu School of Marine Sciences Sun Yat-sen UniversityGuangzhou 510006China Southern Laboratory of Ocean Science and Engineering(Guangdong Zhuhai)Zhuhai 519000China South China Sea Bio-Resource Exploitation and Utilization Collaborative Innovation Center Guangzhou 510006China State Key Laboratory of Applied Microbiology Southern China Guangdong Provincial Key Laboratory of Microbial Culture Collection and ApplicationGuangdong Open Laboratory of Applied MicrobiologyGuangdong Institute of MicrobiologyGuangdong Academy of SciencesGuangzhou 510070China

Amphichoterpenoids A-C(1-3),unprecedented picoline-derived meroterpenoids possessing a pyrano[3,2-c]pyridinyl-g-pyranone scaffold,were characterized from the ascidian-derived fungus Amphichorda felina *** structures were elucidated by spectroscopic methods,X-ray diffraction and electronic circular dichroism(ECD)calculations.A plausible biosynthetic pathway was *** isolated compounds displayed moderate inhibitory activity against acetylcholinesterase with 50%inhibiting concentration(IC_(50))values of 18.8-53.2 mmol/L.

关键词： Fungal meroterpenoid Picoline Amphichorda felina Encapsulated nanodroplet crystallization Acetylcholinesterase

Extrusion process and property of AZ31 magnesium alloy

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China Welding 2019年第2期28卷 10-14页

作者： Tan Ming Quan Gaofeng liu zhaoming School of Material Science&Engineering Dalian Jiaotong UniversityDalian 116028China School of Material Science&Engineering Southwest Jiaotong UniversityChengdu 610063China Yangzhou Chende Heavy Industries Co. LtdYangzhou 225000China

The microstructure and mechanical properties of extruded AZ31 magnesium at different extrusion temperature were *** results show that,at 380℃,when the extrusion ratio is 23,the AZ31 magnesium alloy has a dense recrystallized microstructure and good mechanical *** one hand,if the extrusion ratio is too small,grain crushing effect is not obvious,and part of the grain is not dynamic *** the other hand,larger extrusion ratio can lead to grain growth and banded *** fracture characteristics of extruded AZ31 magnesium alloy is quasi-cleavage.

关键词： AZ31 magnesium alloy extrution ratio simulation microstructure property