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Sun L, Fu Z, Ma E, Li L, Liu Z, Guo X. Bifunctional Polymer Brush Reactor for In Situ Synthesis of Hollow Silica-Supported Gold Nanocatalysts. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:5454-5461. [PMID: 37017211 DOI: 10.1021/acs.langmuir.3c00143] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Abstract
Gold nanoparticles (AuNPs) on carriers have received wide attention as catalysts as a result of their excellent stability and catalytic performance. Herein, we report the design and synthesis of hollow silica-supported gold nanocatalysts (SNPs@AuNPs) composed of highly dispersed AuNPs with approximately 4.30 nm using an in situ colloidal polyelectrolyte template strategy. The monodisperse polystyrene nanospheres accompanied by poly[(2-methacryloyloxyethyl)trimethylammonium chloride] brushes were first synthesized. Subsequently, the facile polymer-brush-engaged strategy for the synthesis of hollow SNPs@AuNPs involves in situ reduction of AuNPs, hydrolytic condensation of silica, and a chemical etching process. In combination with dynamic light scattering, transmission electron microscopy, small-angle X-ray scattering, X-ray powder diffraction, and Fourier transform infrared spectroscopy, the as-obtained polymer brushes were proven as effective versatile nanoreactors for the synthesis of AuNPs and silica nanoparticles without any catalysts. Benefiting from the structural advantages, the resultant hollow SNPs@AuNPs manifested superior catalytic activity and reusability for the reduction of p-nitrophenol by sodium borohydride in aqueous solution. With a delicate design, we believe that this synthetic strategy can be extended to fabricate multifunctional nanomaterials with diverse compositions, which would be of great interest in catalysis, energy, and many other important domains.
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Affiliation(s)
- Liang Sun
- State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi, Xinjiang 832000, People's Republic of China
| | - Zhinan Fu
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, People's Republic of China
| | - Enguang Ma
- State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi, Xinjiang 832000, People's Republic of China
| | - Li Li
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, People's Republic of China
| | - Zhiyong Liu
- State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi, Xinjiang 832000, People's Republic of China
| | - Xuhong Guo
- State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi, Xinjiang 832000, People's Republic of China
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, People's Republic of China
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Sun L, Han H, Liu Z, Fu Z, Hua C, Ma E, Guo J, Liu J, Li L, Fang B, Guo X. Immobilization of Gold Nanoparticles in Spherical Polymer Brushes Observed by Small-Angle X-ray Scattering. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:1869-1876. [PMID: 35080891 DOI: 10.1021/acs.langmuir.1c03081] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Nanosized gold nanoparticles (AuNPs) are of great interest in areas such as catalysts or imaging but are easy to aggregate due to high surface activity. To stabilize AuNPs, two approaches were employed to immobilize AuNPs in spherical polymer brushes (SPBs), namely, the in situ preparation of AuNPs within the brush layer of SPBs and external addition of preprepared citrate-capped AuNPs. The distribution and stability of AuNPs in SPBs were studied by small-angle X-ray scattering (SAXS). SAXS results demonstrated that the in situ-prepared AuNPs were mainly located on the inner layer and their amount decreased from inside to outside. In the case of external addition of preprepared AuNPs, the cationic SPB showed obvious immobilization, while almost no AuNPs were immobilized in the anionic SPB. The stable immobilization of the AuNPs in SPBs was the result of multiple interactions including complexation and electrostatic interaction. SAXS was validated to be a distinctive and powerful characterization method to provide theoretical guidance for the stable immobilization of AuNPs.
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Affiliation(s)
- Liang Sun
- Engineering Research Center of Materials Chemical Engineering of Xinjiang Bingtuan, Shihezi University, 832000 Shihezi, Xinjiang, P. R. China
| | - Haoya Han
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, 200237 Shanghai, P. R. China
- BASF Advanced Chemicals Co., Ltd., 200137 Shanghai, P. R. China
| | - Zhiyong Liu
- Engineering Research Center of Materials Chemical Engineering of Xinjiang Bingtuan, Shihezi University, 832000 Shihezi, Xinjiang, P. R. China
| | - Zhinan Fu
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, 200237 Shanghai, P. R. China
| | - Chen Hua
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, 200237 Shanghai, P. R. China
| | - Enguang Ma
- Engineering Research Center of Materials Chemical Engineering of Xinjiang Bingtuan, Shihezi University, 832000 Shihezi, Xinjiang, P. R. China
| | - Jiangtao Guo
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, 200237 Shanghai, P. R. China
| | - Jichang Liu
- Engineering Research Center of Materials Chemical Engineering of Xinjiang Bingtuan, Shihezi University, 832000 Shihezi, Xinjiang, P. R. China
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, 200237 Shanghai, P. R. China
| | - Li Li
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, 200237 Shanghai, P. R. China
| | - Bo Fang
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, 200237 Shanghai, P. R. China
| | - Xuhong Guo
- Engineering Research Center of Materials Chemical Engineering of Xinjiang Bingtuan, Shihezi University, 832000 Shihezi, Xinjiang, P. R. China
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, 200237 Shanghai, P. R. China
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Kaewruethai T, Laomeephol C, Pan Y, Luckanagul JA. Multifunctional Polymeric Nanogels for Biomedical Applications. Gels 2021; 7:228. [PMID: 34842728 PMCID: PMC8628665 DOI: 10.3390/gels7040228] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 10/30/2021] [Accepted: 11/13/2021] [Indexed: 12/17/2022] Open
Abstract
Currently, research in nanoparticles as a drug delivery system has broadened to include their use as a delivery system for bioactive substances and a diagnostic or theranostic system. Nanogels, nanoparticles containing a high amount of water, have gained attention due to their advantages of colloidal stability, core-shell structure, and adjustable structural components. These advantages provide the potential to design and fabricate multifunctional nanosystems for various biomedical applications. Modified or functionalized polymers and some metals are components that markedly enhance the features of the nanogels, such as tunable amphiphilicity, biocompatibility, stimuli-responsiveness, or sensing moieties, leading to specificity, stability, and tracking abilities. Here, we review the diverse designs of core-shell structure nanogels along with studies on the fabrication and demonstration of the responsiveness of nanogels to different stimuli, temperature, pH, reductive environment, or radiation. Furthermore, additional biomedical applications are presented to illustrate the versatility of the nanogels.
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Affiliation(s)
- Tisana Kaewruethai
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Phayathai Road, Bangkok 10330, Thailand; (T.K.); (C.L.)
- Department of Biochemistry and Microbiology, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Phayathai Road, Bangkok 10330, Thailand
| | - Chavee Laomeephol
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Phayathai Road, Bangkok 10330, Thailand; (T.K.); (C.L.)
- Biomaterial Engineering for Medical and Health Research Unit, Chulalongkorn University, Phayathai Road, Bangkok 10330, Thailand
| | - Yue Pan
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Medical Research Center, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou 510120, China;
| | - Jittima Amie Luckanagul
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Phayathai Road, Bangkok 10330, Thailand; (T.K.); (C.L.)
- Biomaterial Engineering for Medical and Health Research Unit, Chulalongkorn University, Phayathai Road, Bangkok 10330, Thailand
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Banerjee SL, Saha P, Ganguly R, Bhattacharya K, Kalita U, Pich A, Singha NK. A dual thermoresponsive and antifouling zwitterionic microgel with pH triggered fluorescent “on-off” core. J Colloid Interface Sci 2021; 589:110-126. [DOI: 10.1016/j.jcis.2020.12.018] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Revised: 12/05/2020] [Accepted: 12/07/2020] [Indexed: 12/30/2022]
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Zhang Z, Wang X, Li B, Hou Y, Cai Z, Yang J, Li Y. Paclitaxel-loaded PLGA microspheres with a novel morphology to facilitate drug delivery and antitumor efficiency. RSC Adv 2018; 8:3274-3285. [PMID: 35541195 PMCID: PMC9077493 DOI: 10.1039/c7ra12683b] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Accepted: 01/08/2018] [Indexed: 12/25/2022] Open
Abstract
A novel morphological PTX-PLGA-MS with microporous surface and porous internal structures to enhance drug loading, delivery and antitumor efficiency.
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Affiliation(s)
- Zongrui Zhang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing
- Wuhan University of Technology
- Wuhan 430070
- China
- Biomedical Materials and Engineering Research Center of Hubei Province
| | - Xinyu Wang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing
- Wuhan University of Technology
- Wuhan 430070
- China
- Biomedical Materials and Engineering Research Center of Hubei Province
| | - Binbin Li
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing
- Wuhan University of Technology
- Wuhan 430070
- China
- Biomedical Materials and Engineering Research Center of Hubei Province
| | - Yuanjing Hou
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing
- Wuhan University of Technology
- Wuhan 430070
- China
- Biomedical Materials and Engineering Research Center of Hubei Province
| | - Zhengwei Cai
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing
- Wuhan University of Technology
- Wuhan 430070
- China
- Biomedical Materials and Engineering Research Center of Hubei Province
| | - Jing Yang
- School of Foreign Languages
- Wuhan University of Technology
- Wuhan 430070
- China
| | - Yi Li
- Institute of Textiles and Clothing
- The Hong Kong Polytechnic University
- Kowloon
- P. R. China
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