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Phase Transformation of Amorphous Calcium Carbonate to Single-Crystalline Aragonite with Macroscopic Layered Structure in the Presence of Egg White Protein and zinc ion

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Journal of Wuhan University of Technology(Materials Science) 2015年第1期30卷 65-70页

作者：曾辉 XIE Jingjing PING Hang WANG Menghu XIE Hao WANG Weimin 傅正义 State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology School of Science Wuhan University of Technology

Highly oriented calcium carbonate lamellas are exquisite structure produced by biomineralization. Strategies mimicking nature have been developed to synthesize inorganic materials with excellent structures and optimal properties. In our strategy, egg white protein and zinc ion were employed in the solution to induce the crystallization of calcium carbonate, resulting in the macroscopic aragonite laminate with an average length of 1.5 mm, which was comprised of single-crystalline tablets. During the crystallization at initial stage, it was found that the particles displayed the characteristics of amorphous calcium carbonate, which was then transformed into the sophisticated structured aragonite through a multistage assembly process. The rebuilt nacre structure in vitro was achieved owing to the synergistic effects of egg white protein and zinc ion.

关键词： calcium carbonate ACC aragonite egg white protein zinc ion

An Efficient Way for the Recognition of zinc ion via the Fluorescence Enhancement

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Chinese Journal of Chemistry 2012年第7期30卷 1410-1414页

作者：桑秋光杨镜奎 College of Chemistry and Chemical Engineering Graduate University of Chinese Academy of SciencesBeijing 100049China

This study concentrates on the spectral and complexing properties of a tetraoxycalix[2]arene[2]triazine derivative bearing two bipyridines （Calix-BIPY2） in a mixture of acetonitrile ： chloroform （4 ： 1, V： V）. The results show that Calix-BIPY2 has a highly selectivity and sensitivity towards Zn2＋ over various competing eations （K＋, Cu2＋, Cd2＋, Co2＋, Fe2＋, Hg2＋, Ag＋, Al3＋ and pb2＋）. The complexation of Zn2＋ induces a remarkable fluorescence enhancement due to combination effects of the binding strength, electron spins state of metal ions, photoinduced charge transfer （PCT） and the rigidity of the complexing unit offered by calixarene-based hosts.

关键词： fluorescence zinc ion heterocalixaromatics titration chemosenser

Bioprocess inspired formation of calcite mesocrystals by cation-mediated particle attachment mechanism

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National Science Review 2023年第4期10卷 159-168页

作者： Qihang Wang Bicheng Yuan Wenyang Huang Hang Ping Jingjing Xie Kun Wang Weimin Wang Zhaoyong Zou Zhengyi Fu State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Hubei Longzhong Laboratory

Calcite mesocrystals were proposed, and have been widely reported, to form in the presence of polymer additives via oriented assembly of nanoparticles. However, the formation mechanism and the role of polymer additives remain elusive. Here, inspired by the biomineralization process of sea urchin spine comprising magnesium calcite mesocrystals, we show that calcite mesocrystals could also be obtained via atachment of amorphous calcium carbonate(ACC) nanoparticles in the presence of inorganic zinc ions.Moreover, we demonstrate that zinc ions can induce the formation of temporarily stabilized amorphous nanoparticles of less than 20 nm at a significantly lower calcium carbonate concentration as compared to pure solution, which is energetically beneficial for the atachment and occlusion during calcite growth. The cation-mediated particle atachment crystallization significantly improves our understanding of mesocrystal formation mechanisms in biomineralization and offers new opportunities to bioprocess inspired inorganic ions regulated materials fabrication.

关键词： nonclassical crystallization mesocrystal calcium carbonate zinc ion particle attachment

Triple-synergistic MOF-nanozyme for efficient antibacterial treatment

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Bioactive Materials 2022年第11期7卷 289-299页

作者： Muxue Wang Xi Zhou Yunhong Li Yuqing Dong Jiashen Meng Shuai Zhang Linbo Xia Zhaozhi He Lei Ren Zhiwei Chen Xingcai Zhang Department of Electronic Science Fujian Provincial Key Laboratory of Plasma and Magnetic Resonance ResearchSchool of Electronic Science and EngineeringXiamen UniversityXiamen361005People’s Republic of China The Higher Educational Key Laboratory for Biomedical Engineering of Fujian Province Research Center of Biomedical Engineering of XiamenDepartment of BiomaterialsCollege of MaterialsXiamen UniversityXiamen361005People’s Republic of China John A Paulson School of Engineering and Applied Sciences Harvard UniversityCambridgeMA02138USA School of Engineering Massachusetts Institute of TechnologyCambridgeMA02139USA

The abuse of antibiotics makes bacterial infection an increasingly serious global health threat. Reactive oxygen species (ROS) are the ideal alternative antibacterial approach for quick and effective sterilization. Although various antibacterial strategies based on ROS have been developed, many of them are still limited by insufficient antibacterial efficiency. Here, we have developed an acid-enhanced dual-modal antibacterial strategy based on zeolitic imidazolate frameworks-8 (ZIF8) -derived nanozyme. ZIF8, which can release Zn2+, is chosen as the carrier to integrate glucose oxidase (GOx) and gold nanoparticles (Au NPs) which can produce ROS via a cascade catalytic reaction. Thus, the bactericidal capability of ROS and Zn2+ have been integrated. More importantly, gluconic acid, a “by-product” of the catalytic reaction, can generate an acidic environment to promote both the ROS-producing and Zn2+-releasing, enhancing the overall antibacterial performance further. This triple-synergistic strategy exhibits extraordinary bactericidal ability at a low dosage of 4 μg/mL (for S. aureus) and 8 μg/mL (for E. coli), which shows a great potential of MOF-derived nanozyme for efficient bacterial eradication and diverse biomedical applications.

关键词： Metal-organic frameworks Nanozyme Reactive oxygen species Antibacterial zinc ion

Isomerism and coordination mode effects on two-photon absorption of tris(picolyl)amine-based fluorescent probes for zinc ions

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Chinese Physics B 2018年第10期27卷 293-299页

作者：赵珂宋军朱美玉张瀚王传奎 School of Physics and Electronics Shandong Normal University

One-photon absorption and two-photon absorption（TPA） properties of three tris（picolyl）amine-based zinc ion sensors are investigated by employing the density functional response theory in combination with the polarizable continuum model.The different isomer and coordination geometry of each probe are taken into account. Special emphasis is placed on the effects of isomerism and the coordination mode on the optical properties. The intra-molecular charge transfer（ICT）properties are specified by natural bond orbital charge analysis. It is shown that the isomerism has non-negligible effects on TPA properties of free ligands. It is found that both the TPA wavelength and the cross section are highly dependent on the coordination mode. When the zinc ion connects with the picolyl unit in the middle of a ligand, the zinc complex has a large TPA intensity in a long wavelength range due to the increased ICT mechanism.

关键词： two-photon absorption isomerism coordination mode zinc ion

A highly sensitive fluorescent probe for tracking intracellular zinc ions and direct imaging of prostatic tissue in mice

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Chinese Chemical Letters 2020年第11期31卷 2933-2936页

作者： Yuyu Wang Houna Duan Hongyuan Shi Shiwei Zhang Yufang Xu Weiping Zhu Xuhong Qian State Key Laboratory of Bioreactor Engineering Shanghai Key Laboratory of Chemical BiologySchool of PharmacyEast China University of Science and TechnologyShanghai 200237China Department of Radiology Jiangsu Province HospitalFirst Affiliated Hospital of Nanjing Medical UniversityNanjing 210029China

A highly sensitive fluorescent sensor ZnDN was designed,synthesized and used for tracking intracellular zinc ions in various living cells and direct imaging of prostatic tissue in mice.ZnDN was prepared from the heterocyclic-fused naphthalimide fluorophore,and the zinc receptor,N,N-bis(2-pyridylmethyl)ethylenediamine(BPEN).Upon addition of Zn2+to the solutions of ZnDN,a remarkable fluorescence enhancement was observed,which could be attributed to the photo-induced electron transfer(PET)mechanism.Since ZnDN exhibited high sensitivity toward Zn2+in phosphate buffer solution,with a limit of detection of 4.0 x 10-9 mol/L,it was further applied for the imaging of exogenous and endogenous Zn21 in different living cells.Living cells imaging experiments suggested that ZnDN could image the changes of intracellular free zinc ions,and could be used for two-photon imaging.Moreover,flow cytometry suggested that ZnDN could distinguish cancerous prostate cells from normal cells.Animal experiments indicated that ZnDN had the potential in imaging prostate tissue in vivo.

关键词： Fluorescent probe zinc ion Prostate cells Naphthalimide In vivo imaging

Optimized preparation of zinc-inorganic antibacterial material containing samarium using response surface methodology

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Journal of Rare Earths 2014年第9期32卷 900-906页

作者：毛翠萍张彬唐晓宁李欢何素琼 Faculty of Science Kunming University of Science and Technology Institute for Clean Energy and Advanced Materials South-west University Faculty of Chemical Engineering Kunming University of Science and Technology

A Box-Behnken design （BBD） of response surface methodology （RSM） was used to optimize the preparation of the Zn-Sm antibacterial white carbon black by the sol-gel method. The statistical analysis of the results showed that the particle size of the Zn-Sm antibacterial white carbon black was significantly affected by the reaction time, reaction temperature and the stirring speed. According to analysis of variance （ANOVA）, the values of the determination coefficient （R2=0.9821） and the ＂Pred R-Squared＂ of 0.8227 were in reasonable agreement with the ＂Adj R-Squared＂ of 0.9591. It was indicated that this model could be used to navigate the design space. The optimized reaction time, temperature and the stirring speed were 0.88 h, 87.83 ℃, and 473.45 r/rain, respectively. In addition, the bacteriostasis rate of the product was about 97.92%.

关键词： response surface inorganic antibacterial material zinc ion samarium rare earths

Synthesis, characterization and antimicrobial activity of zinc and cerium co-doped α-zirconium phosphate

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Journal of Rare Earths 2012年第8期30卷 820-825页

作者：代光剑于爱丽蔡祥施庆珊欧阳友生谭绍早 State Key Laboratory of Applied Microbiology(Ministry-Guangdong Province Jointly Breeding Base) South ChinaGuangdong Institute of Microbiology Department of Chemistry Jinan University

A series of zinc ions or/and cerium ions co-doped a-zirconium phosphate （Zn-Ce@ZrPs） were prepared. The novel Zn-Ce@ZrPs were characterized and the antibacterial activity on Gram-negative Escherichia coli and Gram-positive Staphylococcus aureus were tested. The results showed that zinc ions （Zn2＋） or/and cerium ions （Ce3＋） were combined with ZrP, and the Ce3＋ was adsorbed on the surface of ZrP through hydrogen bonds, while Zn2＋ intercalated into the interlayer of ZrP. Zn-Ce@ZrPs showed excellent synergistic antibacterial activity. When Zn2＋/Ce3＋ atomic ratio was 0.6, the Zn-Ce@ZrP3 showed the highest synergistic antibacterial efficiency, suggesting great potential ap- plication as antibacterial agents in microbial control.

关键词： zinc ion cerium ion α-zirconium phosphate structure synergetic antibacterial rare earths

Structure and synergetic antibacterial effect of zinc and cerium carried sodium zirconium phosphates

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Journal of Rare Earths 2011年第4期29卷 308-312页

作者：阳运华代光剑谭绍早刘应亮施庆珊欧阳友生 Department of Chemistry Jinan University Guangdong Institute of Microbiology

zinc and cerium carried zirconium phosphates （Zn-Ce/ZrPs） were prepared by exchanging zinc and cerium cations into sodium zirconium phosphate （NaZrP） through the ion-exchange method and characterized by X-ray diffraction（XRD）, energy dispersive X-ray spectroscopy （EDX） and scanning electron microscopy （SEM）. Furthermore, the specific surface area, zeta potential and antibacterial activity were tested. The results showed that Zn-Ce/ZrPs were with hexagonal crystal system, and the surface area of Zn-Ce/ZrPs increased much more than that of NaZrP. Zn-Ce/ZrPs showed obvious synergetic antibacterial effect, and have the potential to be used as antibacterial agents in environmental control.

关键词： zinc ion cerium ion sodium zirconium phosphates structure synergetic antibacterial effect rare earths