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Zhao HY, Chen YQ, Luo XY, Cai MJ, Li JY, Lin XY, Zhang H, Ding HM, Jiang GL, Hu Y. Ligand Phase Separation-Promoted, "Squeezing-Out" Mode Explaining the Mechanism and Implications of Neutral Nanoparticles That Escaped from Lysosomes. ACS NANO 2024; 18:2162-2183. [PMID: 38198577 DOI: 10.1021/acsnano.3c09452] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2024]
Abstract
Neutral nanomaterials functionalized with PEG or similar molecules have been popularly employed as nanomedicines. Compared to positive counterparts that are capable of harnessing the well-known proton sponge effect to facilitate their escape from lysosomes, it is yet unclear how neutral substances got their entry into the cytosol. In this study, by taking PEGylated, neutral Au nanospheres as an example, we systematically investigated their time-dependent translocation postuptake. Specifically, we harnessed dissipative particle dynamics simulations to uncover how nanospheres bypass lysosomal entrapment, wherein a mechanism termed as "squeezing-out" mode was discovered. We next conducted a comprehensive investigation on how nanomaterials implicate lysosomes in terms of integrity and functionality. By using single-molecule imaging, specific preservation of PEG-terminated with targeting moieties in lysosomes supports the "squeezing-out" mode as the mechanism underlying the lysosomal escape of nanomaterials. All evidence points out that such a process is benign to lysosomes, wherein the escape of nanomaterials proceeds at the expense of targeting moieties loss. Furthermore, we proved that by fine-tuning of the efficacy of nanomaterials escaping from lysosomes, modulation of distinct pathways and metabolic machinery can be achieved readily, thereby offering us a simple and robust tool to implicate cells.
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Affiliation(s)
- Hui-Yue Zhao
- College of Engineering and Applied Sciences, MOE Key Laboratory of High Performance Polymer Materials & Technology, Nanjing University, Nanjing, 210033, China
| | - Yuan-Qiang Chen
- Center for Soft Condensed Matter Physics and Interdisciplinary Research, School of Physical Science and Technology, Soochow University, Suzhou, 215031, China
| | - Xing-Yu Luo
- College of Engineering and Applied Sciences, MOE Key Laboratory of High Performance Polymer Materials & Technology, Nanjing University, Nanjing, 210033, China
| | - Ming-Jie Cai
- College of Engineering and Applied Sciences, MOE Key Laboratory of High Performance Polymer Materials & Technology, Nanjing University, Nanjing, 210033, China
| | - Jia-Yi Li
- School of Pharmacy, Nanjing Medical University, Nanjing, 211166, China
| | - Xin-Yu Lin
- School of Stomatology, Nanjing Medical University, Nanjing, 211166, China
| | - Hao Zhang
- Department of Oncology, the First Affiliated Hospital with Nanjing Medical University, Nanjing, 210029, China
| | - Hong-Ming Ding
- Center for Soft Condensed Matter Physics and Interdisciplinary Research, School of Physical Science and Technology, Soochow University, Suzhou, 215031, China
| | - Guang-Liang Jiang
- Department of Urology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Yong Hu
- College of Engineering and Applied Sciences, MOE Key Laboratory of High Performance Polymer Materials & Technology, Nanjing University, Nanjing, 210033, China
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Facile Synthesis of Urchin-like Hollow Au Crystals for In Situ SERS Monitoring of Photocatalytic Reaction. CRYSTALS 2022. [DOI: 10.3390/cryst12070884] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Hollow urchin-like Au nanocrystals have been widely studied due to their excellent surface plasmon resonance properties and large specific surface area, but the controllable preparation of hollow urchin-like Au nanocrystals is still a challenge. In this article, we successfully prepared hollow urchin-like Au nanocrystals using HAuCl4·3H2O and AgNO3 as precursors and ascorbic acid as the reducing agent. No surface ligands or polymer stabilizers are required in the preparation process. HAuCl4·3H2O and AgNO3 will first form AgCl cubes, then the reducing agent, ascorbic acid, will reduce the Au3+ in the solution to Au0, and Au0 will be deposited on the pre-formed AgCl cubes to form AgCl@Au nanocrystals. We characterized the morphology of the prepared Au nanocrystals by scanning electron microscopy and found that by increasing the amount of HAuCl4·3H2O in the reaction, the surface morphology of the Au nanocrystals would change from a rough spherical shape to an urchin-like shape. By further increasing the amount of the precursor HAuCl4·3H2O, urchin-like Au will convert into flake-like morphology. The AgCl in the interior was removed with ammonia water, and finally, hollow urchin-like Au crystals were formed. In addition, we used R6G molecule to explore the surface-enhanced Raman spectroscopy (SERS) enhancement effect of prepared Au crystals. The results show that the minimum detectable concentration of R6G reaches 10−8 M. Moreover, we applied hollow urchin-like Au nanocrystals as catalysts and SERS enhancing materials to detect the photocatalytic reaction of 4-NTP. We used a 785 nm laser as both the SERS light source and the catalytic light source to monitor the photocatalytic effect of the laser on 4-NTP in situ by adjusting the laser power.
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A New Strategy to Fabricate Nanoporous Gold and Its Application in Photodetector. NANOMATERIALS 2022; 12:nano12091580. [PMID: 35564287 PMCID: PMC9102659 DOI: 10.3390/nano12091580] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Revised: 04/23/2022] [Accepted: 04/30/2022] [Indexed: 11/16/2022]
Abstract
Nanoporous gold (NPG) plays an important role in high-performance electronic devices, including sensors, electrocatalysis, and energy storage systems. However, the traditional fabricating methods of NPG, dealloying technique or electrochemical reduction technique, usually require complex experimental procedures and sophisticated equipment. In this work, we reported a unique and simple method to prepare the NPG through a low-temperature solution process. More importantly, the structure of the NPG-based electrode can be further controlled by using the post-treatment process, such as thermal treatment and plasma treatment. Additionally, we also demonstrate the application of the resulting NPG electrodes in flexible photodetectors, which performs a higher sensitivity than common planar photodetectors. We believe that our work opens a possibility for the nanoporous metal in future electronics that is flexible, large scale, with facile fabrication, and low cost.
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Zhu J, Zhang R, Zhu L, Liu X, Zhu T, Guo Z, Zhao Y. Laser-assisted synthesis of Au aerogel with high-index facets for ethanol oxidation. NANOTECHNOLOGY 2022; 33:225404. [PMID: 35180711 DOI: 10.1088/1361-6528/ac56bc] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Accepted: 02/17/2022] [Indexed: 06/14/2023]
Abstract
Gold (Au) can be used as an ideal metal electrocatalyst for ethanol and glucose oxidation reactions due to its high performance-to-cost ratio. In this paper, the Au aerogel with high-index facets was synthesized by using the laser ablation in liquid technology, which can improve the electrocatalytic activity of Au. The as-prepared Au aerogel showed excellent mass activity and specific activity toward ethanol oxidation reaction, which are 4.6 times and 2.1 times higher than Au/C, respectively. The 3D porous nature and rich defect of the Au aerogel provide more active sites. In addition, the high-index facets with under-coordinated atoms enhance the adsorption of ethanol and glucose molecules, thus improving the intrinsic catalytic activity of Au aerogel. The effect of high-index facets has also been investigated by density functional theory calculations. Furthermore, the Au aerogels also show good electrocatalytic activity and stability toward glucose oxidation reaction. These results are conducive to promote the practical application of Au in electrocatalysis.
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Affiliation(s)
- Jiayin Zhu
- Institute of Laser Engineering, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, People's Republic of China
| | - Ran Zhang
- Institute of Laser Engineering, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, People's Republic of China
| | - Liye Zhu
- Institute of Laser Engineering, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, People's Republic of China
| | - Xuan Liu
- Institute of Laser Engineering, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, People's Republic of China
- Key Laboratory of Trans-scale Laser Manufacturing Technology (Beijing University of Technology), Ministry of Education, Beijing 100124, People's Republic of China
- Beijing Engineering Research Center of Laser Technology, Beijing University of Technology, Beijing 100124, People's Republic of China
- Beijing Colleges and Universities Engineering Research Center of Advanced Laser Manufacturing, Beijing 100124, People's Republic of China
| | - Tiying Zhu
- Institute of Laser Engineering, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, People's Republic of China
| | - Ziang Guo
- Institute of Laser Engineering, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, People's Republic of China
| | - Yan Zhao
- Institute of Laser Engineering, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, People's Republic of China
- Key Laboratory of Trans-scale Laser Manufacturing Technology (Beijing University of Technology), Ministry of Education, Beijing 100124, People's Republic of China
- Beijing Engineering Research Center of Laser Technology, Beijing University of Technology, Beijing 100124, People's Republic of China
- Beijing Colleges and Universities Engineering Research Center of Advanced Laser Manufacturing, Beijing 100124, People's Republic of China
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Qin Y, Wu Y, Wang B, Wang J, Zong X, Yao W. Controllable preparation of sea urchin-like Au NPs as a SERS substrate for highly sensitive detection of the toxic atropine. RSC Adv 2021; 11:19813-19818. [PMID: 35479250 PMCID: PMC9033648 DOI: 10.1039/d1ra03223b] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2021] [Accepted: 05/26/2021] [Indexed: 12/13/2022] Open
Abstract
Branched Au nanoparticles (Au NPs) can significantly enhance the Raman signal of trace chemical substances, and have attracted the interest of researchers. However, there are still challenges to accurately prepare the morphology of branched Au NPs. In this work, we have successfully prepared sea urchin-like Au NPs and Au nanowires by using the seed-mediate growth method, with cetyltrimethylammonium bromide (CTAB) and glutathione as ligands, and ascorbic acid as a reducing agent. Using Au NPs with a tetrahexahedron (THH) morphology as seeds, and by simply changing the concentration of glutathione, we explored the growth process of sea urchin-like Au and Au nanowires. At low concentrations of glutathione, Au NPs will preferentially grow along the edges and corners of the THH Au seed, forming a core/satellite structure. As the concentration of glutathione increases, Au NPs will grow along the direction of glutathione, forming sea urchin-like Au NPs. To further increase the concentration of glutathione, we will prepare Au nanowires. In addition, we use the prepared Au NPs as a substrate material for surface-enhanced Raman (SERS) high-sensitivity detection. By using 4-aminothiophenol (4-ATP) as the test molecule, we evaluated the SERS effect of the prepared Au NPs with different morphologies. The results showed that sea urchin-like Au NPs have the best enhancement effect. The lowest concentrations of Rhodamine 6G and 4-ATP were 10-10 M and 10-12 M, respectively, using sea urchin Au NPs as the base material. Furthermore, we conducted a highly sensitive SERS detection of the poison atropine monohydrate, and the lowest detected concentration was 10-10 M.
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Affiliation(s)
- Yazhou Qin
- Key Laboratory of Drug Prevention and Control Technology of Zhejiang Province, Zhejiang Police College 555 Binwen Road, Binjiang District Hangzhou 310053 Zhejiang Province P. R. China
| | - Yuanzhao Wu
- Key Laboratory of Drug Prevention and Control Technology of Zhejiang Province, Zhejiang Police College 555 Binwen Road, Binjiang District Hangzhou 310053 Zhejiang Province P. R. China
| | - Binjie Wang
- Key Laboratory of Drug Prevention and Control Technology of Zhejiang Province, Zhejiang Police College 555 Binwen Road, Binjiang District Hangzhou 310053 Zhejiang Province P. R. China
| | - Jiye Wang
- Key Laboratory of Drug Prevention and Control Technology of Zhejiang Province, Zhejiang Police College 555 Binwen Road, Binjiang District Hangzhou 310053 Zhejiang Province P. R. China
| | - Xingsen Zong
- Key Laboratory of Drug Prevention and Control Technology of Zhejiang Province, Zhejiang Police College 555 Binwen Road, Binjiang District Hangzhou 310053 Zhejiang Province P. R. China
| | - Weixuan Yao
- Key Laboratory of Drug Prevention and Control Technology of Zhejiang Province, Zhejiang Police College 555 Binwen Road, Binjiang District Hangzhou 310053 Zhejiang Province P. R. China
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Wang J, Qin Y, Shi Q, Wen L, Bi L. Cl −-Induced selective fabrication of 3D AgCl microcrystals by a one-pot synthesis method. CrystEngComm 2021. [DOI: 10.1039/d0ce01564d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Cl− induces the shape evolution of AgCl crystals with different morphologies.
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Affiliation(s)
- Jiye Wang
- Key Laboratory of Drug Prevention and Control Technology of Zhejiang Province Zhejiang Police College
- China
| | - Yazhou Qin
- Key Laboratory of Drug Prevention and Control Technology of Zhejiang Province Zhejiang Police College
- China
| | - Qiaocui Shi
- Key Laboratory of Drug Prevention and Control Technology of Zhejiang Province Zhejiang Police College
- China
| | - Luhong Wen
- Ningbo University
- China
- China Innovation Instrument Co., ltd
- China
| | - Lei Bi
- Ningbo University
- China
- China Innovation Instrument Co., ltd
- China
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Shi Y, Lyu Z, Zhao M, Chen R, Nguyen QN, Xia Y. Noble-Metal Nanocrystals with Controlled Shapes for Catalytic and Electrocatalytic Applications. Chem Rev 2020; 121:649-735. [DOI: 10.1021/acs.chemrev.0c00454] [Citation(s) in RCA: 191] [Impact Index Per Article: 47.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Yifeng Shi
- School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Zhiheng Lyu
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Ming Zhao
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Ruhui Chen
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Quynh N. Nguyen
- Department of Chemistry, Agnes Scott College, Decatur, Georgia 30030, United States
| | - Younan Xia
- School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
- The Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, Georgia 30332, United States
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Huo D, Cao Z, Li J, Xie M, Tao J, Xia Y. Seed-Mediated Growth of Au Nanospheres into Hexagonal Stars and the Emergence of a Hexagonal Close-Packed Phase. NANO LETTERS 2019; 19:3115-3121. [PMID: 30924662 DOI: 10.1021/acs.nanolett.9b00534] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Gold (Au) typically crystallizes in a cubic close-packed ( ccp) structure to present a face-centered cubic ( fcc) lattice or crystal phase. Herein, we demonstrate that Au nanoscale hexagonal stars featuring a hexagonal close-packed ( hcp) structure can be synthesized in an aqueous system in the presence of fcc-Au nanospheres as the seeds. The success of this synthesis critically relies on the use of ethylenediaminetetraacetic acid to complex with Au3+ ions (the precursor) and the introduction of 2-phospho-l-ascorbic acid trisodium salt (Asc-2P) as a novel reducing agent to maneuver the reduction kinetics. The use of Asc-2P favorably promotes the formation of hexagonal stars with uneven surfaces at the top and bottom faces, together with concave side faces around the edges. By varying the amount of Asc-2P to fine-tune the reduction kinetics, we can adjust the concaveness of the side faces, with a faster reduction rate favoring greater concaveness and a red shift of the plasmon resonance peak to the near-infrared. For the first time, our results suggest that the phosphate and hydroxyl groups can act synergistically in controlling the morphology of Au nanocrystals. Most significantly, the newly deposited Au atoms can also crystallize in an hcp structure, leading to the observation of a phase transition from fcc to hcp along the growth direction. This new protocol based upon kinetic control can be potentially extended to other noble metals for the facile synthesis of nanocrystals featuring unprecedented structures or phases.
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Affiliation(s)
- Da Huo
- The Wallace H. Coulter Department of Biomedical Engineering , Georgia Institute of Technology and Emory University , Atlanta , Georgia 30332 , United States
| | - Zhenming Cao
- The Wallace H. Coulter Department of Biomedical Engineering , Georgia Institute of Technology and Emory University , Atlanta , Georgia 30332 , United States
| | - Jun Li
- Condensed Matter Physics and Materials Science Department , Brookhaven National Laboratory , Upton , New York 11973 , United States
| | - Minghao Xie
- School of Chemistry and Biochemistry , Georgia Institute of Technology , Atlanta , Georgia 30332 , United States
| | - Jing Tao
- Condensed Matter Physics and Materials Science Department , Brookhaven National Laboratory , Upton , New York 11973 , United States
| | - Younan Xia
- The Wallace H. Coulter Department of Biomedical Engineering , Georgia Institute of Technology and Emory University , Atlanta , Georgia 30332 , United States
- School of Chemistry and Biochemistry , Georgia Institute of Technology , Atlanta , Georgia 30332 , United States
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Tailoring the Size and Shape of Colloidal Noble Metal Nanocrystals as a Valuable Tool in Catalysis. CATALYSIS SURVEYS FROM ASIA 2019. [DOI: 10.1007/s10563-019-09271-7] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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