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Gonçalves JP, Promlok D, Ivanov T, Tao S, Rheinberger T, Jo SM, Yu Y, Graf R, Wagner M, Crespy D, Wurm FR, Caire da Silva L, Jiang S, Landfester K. Confining the Sol-Gel Reaction at the Water/Oil Interface: Creating Compartmentalized Enzymatic Nano-Organelles for Artificial Cells. Angew Chem Int Ed Engl 2023; 62:e202216966. [PMID: 36517933 DOI: 10.1002/anie.202216966] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Revised: 12/13/2022] [Accepted: 12/14/2022] [Indexed: 12/23/2022]
Abstract
Living organisms compartmentalize their catalytic reactions in membranes for increased efficiency and selectivity. To mimic the organelles of eukaryotic cells, we develop a mild approach for in situ encapsulating enzymes in aqueous-core silica nanocapsules. In order to confine the sol-gel reaction at the water/oil interface of miniemulsion, we introduce an aminosilane to the silica precursors, which serves as both catalyst and an amphiphilic anchor that electrostatically assembles with negatively charged hydrolyzed alkoxysilanes at the interface. The semi-permeable shell protects enzymes from proteolytic attack, and allows the transport of reactants and products. The enzyme-carrying nanocapsules, as synthetic nano-organelles, are able to perform cascade reactions when enveloped in a polymer vesicle, mimicking the hierarchically compartmentalized reactions in eukaryotic cells. This in situ encapsulation approach provides a versatile platform for the delivery of biomacromolecules.
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Affiliation(s)
- Jenifer Pendiuk Gonçalves
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany.,Federal University of Paraná, Av. Cel Francisco H dos Santos, s/n, CEP, 81530-980, Curitiba, PR, Brazil
| | - Duangkamol Promlok
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany
| | - Tsvetomir Ivanov
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany
| | - Shijia Tao
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao, 266003, China
| | - Timo Rheinberger
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany
| | - Seong-Min Jo
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany
| | - Yingjie Yu
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao, 266003, China
| | - Robert Graf
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany
| | - Manfred Wagner
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany
| | - Daniel Crespy
- Department of Materials Science and Engineering, School of Molecular Science and Engineering, Vidyasirimedhi Institute of Science and Technology (VISTEC), Rayong, 21210, Thailand
| | - Frederik R Wurm
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany
| | - Lucas Caire da Silva
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany
| | - Shuai Jiang
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao, 266003, China
| | - Katharina Landfester
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany
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2
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Graham M, Shchukin D. Formation Mechanism of Multipurpose Silica Nanocapsules. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:918-927. [PMID: 33404247 PMCID: PMC8057668 DOI: 10.1021/acs.langmuir.0c03286] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Revised: 12/18/2020] [Indexed: 06/12/2023]
Abstract
Core-shell structures containing active materials can be fabricated using almost infinite reactant combinations. A mechanism to describe their formation is therefore useful. In this work, nanoscale all-silica shell capsules with an aqueous core were fabricated by the HCl-catalyzed condensation of tetraethyl orthosilicate (TEOS), using Pickering emulsion templates. Pickering emulsions were fabricated using modified commercial silica (LUDOX TMA) nanoparticles as stabilizers. By following the reaction over a 24 h period, a general mechanism for their formation is suggested. The interfacial activity of the Pickering emulsifiers heavily influenced the final capsule products. Fully stable Pickering emulsion templates with interfacially active particles allowed a highly stable sub-micrometer (500-600 nm) core-shell structure to form. Unstable Pickering emulsions, i.e., where interfacially inactive silica nanoparticles do not adsorb effectively to the interface and produce only partially stable emulsion droplets, resulted in capsule diameter increasing markedly (1+ μm). Scanning electron microscope (SEM) and transmission electron microscope (TEM) measurements revealed the layered silica "colloidosome" structure: a thin yet robust inner silica shell with modified silica nanoparticles anchored to the outer interface. Varying the composition of emulsion phases also affected the size of capsule products, allowing size tuning of the capsules. Silica capsules are promising protective nanocarriers for hydrophilic active materials in applications such as heat storage, sensors, and drug delivery.
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Graham M, Smith J, Bilton M, Shchukina E, Novikov AA, Vinokurov V, Shchukin DG. Highly Stable Energy Capsules with Nano-SiO 2 Pickering Shell for Thermal Energy Storage and Release. ACS NANO 2020; 14:8894-8901. [PMID: 32539347 PMCID: PMC7450661 DOI: 10.1021/acsnano.0c03706] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Phase change materials (PCMs) store latent heat energy as they melt and release it upon freezing. However, they suffer from chemical instability and poor thermal conductivity, which can be improved by encapsulation. Here, we encapsulated a salt hydrate PCM (Mg(NO3)2·6H2O) within all-silica nanocapsules using a Pickering emulsion template. Electron microscopy analysis demonstrated robust silica-silica (RSS) shell formed inner silica layer of approximately 45 nm thickness, with silica Pickering emulsifiers anchored to the surface. The RSS nanostructured capsules are 300-1000 nm in size and have far superior thermal and chemical stability compared with that of the bulk salt hydrate. Differential scanning calorimetry showed encapsulated PCMs were stable over 500+ melt/freeze cycles (equivalent to 500+ day/night temperature difference) with a latent heat of 112.8 J·g-1. Thermogravimetric analysis displayed their impressive thermal stability, with as little as 37.2% mass loss at 800 °C. Raman spectroscopy proved the presence of salt hydrate within RSS capsules and illustrated the improved chemical stability compared to non-encapsulated Mg(NO3)2·6H2O. Energy capsule behavior compared with the bulk material was also observed at the macroscale with thermal imaging, showing that the melting/freezing behavior of the PCM is confined to the nanocapsule core. The thermal conductivity of the silica shell measured by laser flash thermal conductivity method is 1.4 ± 0.2 W·(m·K)-1, which is around 7 times more than the thermal conductivity of the polymer shell (0.2 W·(m·K)-1). RSS capsules containing PCMs have improved thermal stability and conductivity compared to polymer-based capsules and have good potential for thermoregulation or energy storage applications.
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Affiliation(s)
- Michael Graham
- Stephenson
Institute for Renewable Energy and Department of Chemistry, University of Liverpool, Liverpool L69 7ZD, United Kingdom
| | - James Smith
- Stephenson
Institute for Renewable Energy and Department of Chemistry, University of Liverpool, Liverpool L69 7ZD, United Kingdom
| | - Matthew Bilton
- Imaging
Centre at Liverpool, University of Liverpool, Liverpool L69 3GL, United Kingdom
| | - Elena Shchukina
- Stephenson
Institute for Renewable Energy and Department of Chemistry, University of Liverpool, Liverpool L69 7ZD, United Kingdom
| | | | | | - Dmitry G. Shchukin
- Stephenson
Institute for Renewable Energy and Department of Chemistry, University of Liverpool, Liverpool L69 7ZD, United Kingdom
- Gubkin
University, 65/1 Leninsky prospect, 119991 Moscow, Russia
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Gao F, Qi Q, Liang X, Wen L, Shang Y, Mi Y, Ziener U, Cao Z. Fabrication of Fe
3
O
4
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O
‐Carboxylmethyl Chitosan Magnetic Particle Assembles in Inverse Miniemulsions for Loading and Release of Bovine Serum Albumin. ChemistrySelect 2020. [DOI: 10.1002/slct.202001784] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Feng Gao
- Key Laboratory of Advanced Textile Materials and Manufacturing Technology and Engineering Research Center for Eco-Dyeing & Finishing of Textiles, Ministry of Education Zhejiang Sci-Tech University Hangzhou 310018 China
| | - Qi Qi
- Key Laboratory of Advanced Textile Materials and Manufacturing Technology and Engineering Research Center for Eco-Dyeing & Finishing of Textiles, Ministry of Education Zhejiang Sci-Tech University Hangzhou 310018 China
| | - Xiaoqin Liang
- Key Laboratory of Advanced Textile Materials and Manufacturing Technology and Engineering Research Center for Eco-Dyeing & Finishing of Textiles, Ministry of Education Zhejiang Sci-Tech University Hangzhou 310018 China
| | - Lixin Wen
- Key Laboratory of Advanced Textile Materials and Manufacturing Technology and Engineering Research Center for Eco-Dyeing & Finishing of Textiles, Ministry of Education Zhejiang Sci-Tech University Hangzhou 310018 China
| | - Yi Shang
- Key Laboratory of Advanced Textile Materials and Manufacturing Technology and Engineering Research Center for Eco-Dyeing & Finishing of Textiles, Ministry of Education Zhejiang Sci-Tech University Hangzhou 310018 China
| | - Yifang Mi
- Key Laboratory of Advanced Textile Materials and Manufacturing Technology and Engineering Research Center for Eco-Dyeing & Finishing of Textiles, Ministry of Education Zhejiang Sci-Tech University Hangzhou 310018 China
| | - Ulrich Ziener
- Institute of Organic Chemistry III – Macromolecular Chemistry and Organic Materials, University of Ulm Albert-Einstein-Allee 11 Ulm 89081 Germany
| | - Zhihai Cao
- Key Laboratory of Advanced Textile Materials and Manufacturing Technology and Engineering Research Center for Eco-Dyeing & Finishing of Textiles, Ministry of Education Zhejiang Sci-Tech University Hangzhou 310018 China
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Ramalingam S, Le Bourdon G, Pouget E, Scalabre A, Rao JR, Perro A. Adsorption of Proteins on Dual Loaded Silica Nanocapsules. J Phys Chem B 2019; 123:1708-1717. [DOI: 10.1021/acs.jpcb.8b12028] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Sathya Ramalingam
- Inorganic and Physical Chemistry Laboratory, Council of Scientific & Industrial Research-Central Leather Research Institute, Adyar, Chennai-6000 20, India
| | - Gwenaelle Le Bourdon
- Institut des Sciences Moléculaires (ISM) - CNRS - Université de Bordeaux - Bordeaux INP, UMR 5255, 351 cours de la libération, 33405 Talence, France
| | - Emilie Pouget
- Chimie et Biologie des Membranes et des Nanoobjets (CBMN), CNRS - Université Bordeaux - Bordeaux INP, UMR 5248, Allée St Hilaire, Bat B14, 33607 Pessac, France
| | - Antoine Scalabre
- Chimie et Biologie des Membranes et des Nanoobjets (CBMN), CNRS - Université Bordeaux - Bordeaux INP, UMR 5248, Allée St Hilaire, Bat B14, 33607 Pessac, France
| | - Jonnalagadda Raghava Rao
- Inorganic and Physical Chemistry Laboratory, Council of Scientific & Industrial Research-Central Leather Research Institute, Adyar, Chennai-6000 20, India
| | - Adeline Perro
- Université de Bordeaux, Bordeaux INP, ISM, UMR 5255, Site ENSCBP, 16 avenue Pey Berland, 33607 Pessac, France
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Nishanthi ST, Yadav KK, Baruah A, Vaghasiya K, Verma RK, Ganguli AK, Jha M. Nanostructured silver decorated hollow silica and their application in the treatment of microbial contaminated water at room temperature. NEW J CHEM 2019. [DOI: 10.1039/c9nj01049a] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Effect of silver decoration on hollow silica and its antimicrobial properties.
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Affiliation(s)
- S. T. Nishanthi
- Institute of Nano Science & Technology
- Habitat Centre
- Mohali
- India
- Electrochemical Power Sources Division
| | | | - Arabinda Baruah
- Institute of Nano Science & Technology
- Habitat Centre
- Mohali
- India
| | | | | | - Ashok K. Ganguli
- Institute of Nano Science & Technology
- Habitat Centre
- Mohali
- India
- Department of Chemistry
| | - Menaka Jha
- Institute of Nano Science & Technology
- Habitat Centre
- Mohali
- India
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Jiang H, Hong L, Li Y, Ngai T. All-Silica Submicrometer Colloidosomes for Cargo Protection and Tunable Release. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201805968] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Hang Jiang
- Department of Chemistry; The Chinese University of Hong Kong; Shatin, N.T. Hong Kong Hong Kong
| | - Liangzhi Hong
- Department of Polymer Materials Science and Engineering; South China University of Technology; Guangzhou 510641 P. R. China
| | - Yunxing Li
- The Key Laboratory of Synthetic and Biological Colloids; Ministry of Education; School of Chemical and Material Engineering; Jiangnan University; Wuxi 214122 P. R. China
| | - To Ngai
- Department of Chemistry; The Chinese University of Hong Kong; Shatin, N.T. Hong Kong Hong Kong
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Jiang H, Hong L, Li Y, Ngai T. All-Silica Submicrometer Colloidosomes for Cargo Protection and Tunable Release. Angew Chem Int Ed Engl 2018; 57:11662-11666. [PMID: 30030905 DOI: 10.1002/anie.201805968] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Revised: 06/29/2018] [Indexed: 11/12/2022]
Abstract
Colloidosomes have received considerable attention for the controlled delivery of active ingredients in medicine, agrochemicals, and cosmetics. However, most reported colloidosomes are highly permeable and size is larger than 1 μm. All silica colloidosomes have now been prepared with adjustable size, compact shell and low permeability. Our approach is based on the formation of inverse water-in-oil (w/o) emulsions stabilized solely by hydrophobic silica nanoparticles and subsequent locking of the particle at the oil-water interface by a simple sol-gel reaction of silica precursor at room temperature. The colloidosomes obtained display a robust and closed shell, ensuring a long-term retention of small hydrophilic molecules such as Methylene Blue. Remarkably, unlike all other reported silica colloidosomes, a timely and stepwise release of the encapsulated cargo can be triggered by adding ethanol or surfactant without destroying the capsule shell.
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Affiliation(s)
- Hang Jiang
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, Hong Kong
| | - Liangzhi Hong
- Department of Polymer Materials Science and Engineering, South China University of Technology, Guangzhou, 510641, P. R. China
| | - Yunxing Li
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, 214122, P. R. China
| | - To Ngai
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, Hong Kong
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9
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Nazarabady MM, Farzi G. Morphology control to design p(acrylic acid)/silica nanohybrids with controlled mechanical properties. POLYMER 2018. [DOI: 10.1016/j.polymer.2018.02.026] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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10
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Influence of synthesis parameters on particle properties and catalytic activity of rice roll-like Au/SiO2 nanocatalysts prepared in inverse miniemulsions. Colloids Surf A Physicochem Eng Asp 2018. [DOI: 10.1016/j.colsurfa.2017.09.053] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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11
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Xiao PW, Zhao L, Sui ZY, Han BH. Synthesis of Core-Shell Structured Porous Nitrogen-Doped Carbon@Silica Material via a Sol-Gel Method. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:6038-6045. [PMID: 28555496 DOI: 10.1021/acs.langmuir.7b00331] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Core-shell structured nitrogen-doped porous carbon@silica material with uniform structure and morphology was synthesized via a sol-gel method. During this process, a commercial triblock copolymer and the in situ formed pyrrole-formaldehyde polymer acted as cotemplates, while tetraethyl orthosilicate acted as silica precursor. The synergetic effect of the triblock copolymer and the pyrrole-formaldehyde polymer enables the formation of the core-shell structure. Herein, the pyrrole-formaldehyde polymer acted as not only the template, but also the nitrogen-doped carbon precursor of the core. The obtained core-shell structured porous material possesses moderate Brunauer-Emmett-Teller specific surface area (410 m2 g-1) and pore volume (0.53 cm3 g-1). Moreover, corresponding hollow silica spheres or nitrogen-doped porous carbon spheres can be synthesized by calcining the core-shell structured material in air or etching it with HF. The X-ray photoelectron spectroscopy results reveal that the nitrogen states of the obtained material are mainly pyridinic-N and pyridonic-N/pyrrolic-N, which are beneficial for carbon dioxide adsorption. The carbon dioxide uptake capacity of the nitrogen-doped carbon spheres can reach 12.3 wt % at 273 K and 1.0 bar, meanwhile, the material shows good gas adsorption selectivities for CO2/CH4 and CO2/N2.
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Affiliation(s)
- Pei-Wen Xiao
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology , Beijing 100190, China
- University of Chinese Academy of Sciences , Beijing 100049, China
| | - Li Zhao
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology , Beijing 100190, China
| | - Zhu-Yin Sui
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology , Beijing 100190, China
| | - Bao-Hang Han
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology , Beijing 100190, China
- University of Chinese Academy of Sciences , Beijing 100049, China
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12
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Wibowo D, Hui Y, Middelberg APJ, Zhao CX. Interfacial engineering for silica nanocapsules. Adv Colloid Interface Sci 2016; 236:83-100. [PMID: 27522646 DOI: 10.1016/j.cis.2016.08.001] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2016] [Revised: 07/20/2016] [Accepted: 08/02/2016] [Indexed: 12/18/2022]
Abstract
Silica nanocapsules have attracted significant interest due to their core-shell hierarchical structure. The core domain allows the encapsulation of various functional components such as drugs, fluorescent and magnetic nanoparticles for applications in drug delivery, imaging and sensing, and the silica shell with its unique properties including biocompatibility, chemical and physical stability, and surface-chemistry tailorability provides a protection layer for the encapsulated cargo. Therefore, significant effort has been directed to synthesize silica nanocapsules with engineered properties, including size, composition and surface functionality, for various applications. This review provides a comprehensive overview of emerging methods for the manufacture of silica nanocapsules, with a special emphasis on different interfacial engineering strategies. The review starts with an introduction of various manufacturing approaches of silica nanocapsules highlighting surface engineering of the core template nanomaterials (solid nanoparticles, liquid droplets, and gas bubbles) using chemicals or biomolecules which are able to direct nucleation and growth of silica at the boundary of two-phase interfaces (solid-liquid, liquid-liquid, and gas-liquid). Next, surface functionalization of silica nanocapsules is presented. Furthermore, strategies and challenges of encapsulating active molecules (pre-loading and post-loading approaches) in these capsular systems are critically discussed. Finally, applications of silica nanocapsules in controlled release, imaging, and theranostics are reviewed.
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Affiliation(s)
- David Wibowo
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, St Lucia, QLD, 4072, Australia
| | - Yue Hui
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, St Lucia, QLD, 4072, Australia
| | - Anton P J Middelberg
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, St Lucia, QLD, 4072, Australia
| | - Chun-Xia Zhao
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, St Lucia, QLD, 4072, Australia.
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14
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Nazarabady MM, Farzi GA. Tunable morphology for silica/poly(acrylic acid) hybrid nanoparticles via facile one-pot synthesis. Macromol Res 2016. [DOI: 10.1007/s13233-016-4101-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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15
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Nazarabady MM, Farzi GA. Morphology control of silica/poly(methyl methacrylate-co-styrene) hybrid nanoparticles via multiple-miniemulsion approach. E-POLYMERS 2016. [DOI: 10.1515/epoly-2015-0205] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractAn appropriate approach has been used for the preparation of silica/P(MMA-co-St) hybrid nanoparticles through converting previously prepared inverse miniemulsions into a direct miniemulsion and consequently, using the droplet nucleation polymerization technique. In the early stage of the procedure, silica particles were synthesized from TEOS in the presence of NH4OH or HCl as a catalyst through a base or acid-catalyzed sol-gel process. TEOS, ethanol and tirmethoxyvinylsilan were mixed in MMA:St (50:50) to create the inverse miniemulsion I, similarly CTAB, NH4OH/HCl and distilled water were dispersed into MMA:St (50:50) and called inverse miniemulsion II. Then, the two mentioned inverse miniemulsions were emulsified in water to achieve direct miniemulsion. The nature of the catalyst and TEOS concentration varied, for the aims of investigation, their effect on the morphology and size of hybrid nanoparticles. This route provided a unique process for silica/polymer hybrid nanoparticles production, avoiding organic solvents. Transmission electron microscopy micrographs revealed that, the morphology of the hybrid nanoparticles can be controlled by the nature of the catalyst.
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Affiliation(s)
- Maryam Mohammadpour Nazarabady
- 1Faculty of Engineering, Department of Materials and Polymer Engineering, Hakim Sabzevari University, Sabzevar, 9617976487, Iran
| | - Gholam Ali Farzi
- 1Faculty of Engineering, Department of Materials and Polymer Engineering, Hakim Sabzevari University, Sabzevar, 9617976487, Iran
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Cao Z, Chen H, Zhu S, Chen Z, Xu C, Qi D, Ziener U. Inverse miniemulsion-based preparation of raspberry-like Au/SiO 2 nanocomposite particles with high catalytic activity towards reduction of p -nitrophenol. Colloids Surf A Physicochem Eng Asp 2016. [DOI: 10.1016/j.colsurfa.2015.11.001] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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17
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Jakhmola A, Vecchione R, Guarnieri D, Belli V, Calabria D, Netti PA. Bioinspired Oil Core/Silica Shell Nanocarriers with Tunable and Multimodal Functionalities. Adv Healthc Mater 2015; 4:2688-98. [PMID: 26513631 DOI: 10.1002/adhm.201500588] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2015] [Revised: 08/27/2015] [Indexed: 12/22/2022]
Abstract
The application of multimodal systems in the field of nanomedicine is advantageous as they can perform two or more tasks simultaneously. Here a robust approach is presented mimicking biogenic silica to design a multilayered nanocarrier system with a central oil core encapsulated within a polymer-silica shell. The outermost silica shell has been deposited through a biosilicification process induced by poly-L-lysine molecules immobilized on the surface of emulsion droplets. This system can be simultaneously loaded with high amount of hydrophobic molecules or contrasting agents in the inner oil core, while the polymeric-silica layers can be easily tagged with at least two different contrasting agents. Additionally, the zwitterionic nature of the silica precipitating peptide (poly-L-lysine) has been efficiently exploited to modulate and entirely reverse the surface charge of the nanocarrier without using any additional coating material. It has been demonstrated experimentally that the designed nanocapsular system is monodisperse, nontoxic, cargo protective, tunable in thickness, fluorescent, and magnetic resonance imaging (MRI) active so highly versatile for multiple applications in the field of drug delivery and in vivo imaging.
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Affiliation(s)
- Anshuman Jakhmola
- Istituto Italiano di Tecnologia; IIT@CRIB; Largo Barsanti e Matteucci 53 80125 Napoli Italy
| | - Raffaele Vecchione
- Istituto Italiano di Tecnologia; IIT@CRIB; Largo Barsanti e Matteucci 53 80125 Napoli Italy
- Centro di Ricerca Interdipartimentale sui Biomateriali CRIB; Università di Napoli Federico II; Piazzale Tecchio 80 80125 Napoli Italy
| | - Daniela Guarnieri
- Istituto Italiano di Tecnologia; IIT@CRIB; Largo Barsanti e Matteucci 53 80125 Napoli Italy
- Centro di Ricerca Interdipartimentale sui Biomateriali CRIB; Università di Napoli Federico II; Piazzale Tecchio 80 80125 Napoli Italy
| | - Valentina Belli
- Istituto Italiano di Tecnologia; IIT@CRIB; Largo Barsanti e Matteucci 53 80125 Napoli Italy
- Centro di Ricerca Interdipartimentale sui Biomateriali CRIB; Università di Napoli Federico II; Piazzale Tecchio 80 80125 Napoli Italy
| | - Dominic Calabria
- Centro di Ricerca Interdipartimentale sui Biomateriali CRIB; Università di Napoli Federico II; Piazzale Tecchio 80 80125 Napoli Italy
| | - Paolo A. Netti
- Istituto Italiano di Tecnologia; IIT@CRIB; Largo Barsanti e Matteucci 53 80125 Napoli Italy
- Centro di Ricerca Interdipartimentale sui Biomateriali CRIB; Università di Napoli Federico II; Piazzale Tecchio 80 80125 Napoli Italy
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Cao Z, Chen H, Zhu S, Zhang W, Wu X, Shan G, Ziener U, Qi D. Preparation of Janus Pd/SiO₂ nanocomposite particles in inverse miniemulsions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:4341-4350. [PMID: 25804935 DOI: 10.1021/acs.langmuir.5b00437] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Janus Pd/SiO2 nanocomposite particles (NCPs) were successfully synthesized through a combination of the sol-gel process of tetramethoxysilane in inverse miniemulsions and in situ reduction of Pd salts via a gas diffusion process of hydrazine. The formation of Pd nanoparticles (NPs) was verified by X-ray diffraction. The Janus morphology of the Pd/SiO2 NCPs was confirmed by microscopic observation. The Pd/SiO2 NCPs displayed a mesoporous structure. The content of Pd NPs in the NCPs could be conveniently adjusted by the K2PdCl4 loading. A formation mechanism of the Janus Pd/SiO2 NCPs was proposed. The mesoporous Janus Pd/SiO2 NCPs show good catalytic activity toward the reduction of p-nitrophenol with NaBH4.
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Affiliation(s)
| | | | - Shudi Zhu
- ‡College of Materials, Chemistry and Chemical Engineering, Hangzhou Normal University, Xuelin Street 16, Hangzhou, Zhejiang 310036, People's Republic of China
| | - Wenwen Zhang
- ‡College of Materials, Chemistry and Chemical Engineering, Hangzhou Normal University, Xuelin Street 16, Hangzhou, Zhejiang 310036, People's Republic of China
| | - Xufang Wu
- ‡College of Materials, Chemistry and Chemical Engineering, Hangzhou Normal University, Xuelin Street 16, Hangzhou, Zhejiang 310036, People's Republic of China
| | - Guorong Shan
- §State Key Laboratory of Chemical Engineering, Department of Chemical and Biological Engineering, Zhejiang University, Hangzhou, Zhejiang 310027, People's Republic of China
| | - Ulrich Ziener
- ∥Institute of Organic Chemistry III, Macromolecular Chemistry and Organic Materials, University of Ulm, Albert-Einstein-Allee 11, Ulm 89081, Germany
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19
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Cao Z, Xu C, Ding X, Zhu S, Chen H, Qi D. Synthesis of fragrance/silica nanocapsules through a sol–gel process in miniemulsions and their application as aromatic finishing agents. Colloid Polym Sci 2015. [DOI: 10.1007/s00396-015-3502-2] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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20
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van Wijk J, Salari JWO, Meuldijk J, Klumperman B. Determination of the shell growth direction during the formation of silica microcapsules by confocal fluorescence microscopy. J Mater Chem B 2015; 3:7745-7751. [DOI: 10.1039/c5tb01232e] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel procedure was developed to determine the direction of silica growth during the formation of a silica shell around aqueous microdroplets in water-in-oil Pickering emulsions, and it was found that the shell grows from the inside to the outside.
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Affiliation(s)
- Judith van Wijk
- Eindhoven University of Technology
- Department of Chemical Engineering and Chemistry
- 5600 MB Eindhoven
- The Netherlands
| | - Joris W. O. Salari
- Eindhoven University of Technology
- Department of Chemical Engineering and Chemistry
- 5600 MB Eindhoven
- The Netherlands
| | - Jan Meuldijk
- Eindhoven University of Technology
- Department of Chemical Engineering and Chemistry
- 5600 MB Eindhoven
- The Netherlands
| | - Bert Klumperman
- Stellenbosch University
- Dept. Chemistry and Polymer Science
- South Africa
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21
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Cao Z, Yang L, Chen H, Xu C, Qi D, Zhu S, Ziener U. Preparation of Au/TiO2 nanocomposite particles with high visible-light photocatalytic activity in inverse miniemulsions. Colloid Polym Sci 2014. [DOI: 10.1007/s00396-014-3412-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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22
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Fang Z, Yang D, Gao Y, Li H. Massage ball-like, hollow porous Au/SiO2microspheres templated by a Pickering emulsion derived from polymer–metal hybrid emulsifier micelles. RSC Adv 2014. [DOI: 10.1039/c4ra09545f] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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23
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Preparation of Mannitol@Silica core–shell capsules via an interfacial polymerization process from water-in-oil emulsion. Colloids Surf A Physicochem Eng Asp 2014. [DOI: 10.1016/j.colsurfa.2014.06.018] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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24
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Dehsorkhi A, Castelletto V, Hamley IW. Self-assembling amphiphilic peptides. J Pept Sci 2014; 20:453-67. [PMID: 24729276 PMCID: PMC4237179 DOI: 10.1002/psc.2633] [Citation(s) in RCA: 266] [Impact Index Per Article: 26.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2014] [Revised: 02/27/2014] [Accepted: 03/04/2014] [Indexed: 01/08/2023]
Abstract
The self-assembly of several classes of amphiphilic peptides is reviewed, and selected applications are discussed. We discuss recent work on the self-assembly of lipopeptides, surfactant-like peptides and amyloid peptides derived from the amyloid-β peptide. The influence of environmental variables such as pH and temperature on aggregate nanostructure is discussed. Enzyme-induced remodelling due to peptide cleavage and nanostructure control through photocleavage or photo-cross-linking are also considered. Lastly, selected applications of amphiphilic peptides in biomedicine and materials science are outlined.
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Affiliation(s)
- Ashkan Dehsorkhi
- Department of Chemistry, University of ReadingWhiteknights, Reading, RG6 6AD, UK
| | - Valeria Castelletto
- Department of Chemistry, University of ReadingWhiteknights, Reading, RG6 6AD, UK
| | - Ian W Hamley
- Department of Chemistry, University of ReadingWhiteknights, Reading, RG6 6AD, UK
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25
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Chen Z, Yang L, Yan Y, Qi D, Cao Z. Preparation of silica capsules via an acid-catalyzed sol–gel process in inverse miniemulsions. Colloid Polym Sci 2014. [DOI: 10.1007/s00396-014-3211-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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26
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Dehsorkhi A, Hamley IW. Silica templating of a self-assembling peptide amphiphile that forms nanotapes. SOFT MATTER 2014; 10:1660-4. [PMID: 24651874 DOI: 10.1039/c3sm52324a] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
The peptide amphiphile C16-KTTKS templates silica polymerization, enabling the production of silica nanotape structures, imaged via electron microscopy (TEM and SEM). X-ray scattering shows that the nanotapes comprise stacked layers, as for the parent peptide amphiphile, but with a substantially increased layer spacing resulting from silica polymerization.
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Affiliation(s)
- Ashkan Dehsorkhi
- School of Chemistry, Pharmacy and Food Biosciences, University of Reading, Whiteknights, Reading, RG6 6AD, UK
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27
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Cao Z, Ziener U. Synthesis of nanostructured materials in inverse miniemulsions and their applications. NANOSCALE 2013; 5:10093-10107. [PMID: 24056795 DOI: 10.1039/c3nr03190j] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Polymeric nanogels, inorganic nanoparticles, and organic-inorganic hybrid nanoparticles can be prepared via the inverse miniemulsion technique. Hydrophilic functional cargos, such as proteins, DNA, and macromolecular fluoresceins, may be conveniently encapsulated in these nanostructured materials. In this review, the progress of inverse miniemulsions since 2000 is summarized on the basis of the types of reactions carried out in inverse miniemulsions, including conventional free radical polymerization, controlled/living radical polymerization, polycondensation, polyaddition, anionic polymerization, catalytic oxidation reaction, sol-gel process, and precipitation reaction of inorganic precursors. In addition, the applications of the nanostructured materials synthesized in inverse miniemulsions are also reviewed.
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Affiliation(s)
- Zhihai Cao
- College of Materials, Chemistry and Chemical Engineering, Hangzhou Normal University, Xuelin Street 16, Hangzhou, 310036, China.
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28
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Hu X, Wang Y, Peng B. Chitosan-capped mesoporous silica nanoparticles as pH-responsive nanocarriers for controlled drug release. Chem Asian J 2013; 9:319-27. [PMID: 24115568 DOI: 10.1002/asia.201301105] [Citation(s) in RCA: 98] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2013] [Indexed: 11/08/2022]
Abstract
Herein, we present a straightforward synthesis of pH-responsive chitosan-capped mesoporous silica nanoparticles (MSNs). These MCM-41-type MSNs could be used as nanocapsules to accommodate guest molecules. Subsequently, (3-glycidyloxypropyl)trimethoxysilane was grafted onto the surface of the MSNs, which served as a bridge to link between MSNs and chitosan, which is ubiquitous in nature and commercially available. Owing to the pH-responsive and biocompatible features of chitosan, the loading and release of an anti-cancer drug, doxorubicin hydrochloride, were carried out in vitro, in which the composite chitosan-capped MSNs (CS-MSNs) showed excellent environmental response. As the pH value of the media decreased, the degree of drug release correspondingly increased. Moreover, thanks to the perfect biocompatibility of chitosan, the CS-MSNs exhibited lower cytotoxicity than that of the naked MSNs in an MTT assay. In addition, the in vitro kill potency against MCF-7 breast-cancer cells was enhanced over time, as well as with increasing concentration of the drug-loaded CS-MSNs. These results indicate that CS-MSNs are promising candidates for pH-responsive drug delivery in cancer therapy.
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Affiliation(s)
- Xiaoxi Hu
- Scholl of Chemistry and Chemical Engineering, Qinzhou University, Qinzhou 535000 (People's Republic of China).
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29
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Fabrication of nanogel core–silica shell and hollow silica nanoparticles via an interfacial sol–gel process triggered by transition-metal salt in inverse systems. J Colloid Interface Sci 2013; 406:139-47. [DOI: 10.1016/j.jcis.2013.06.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2013] [Revised: 05/31/2013] [Accepted: 06/03/2013] [Indexed: 11/19/2022]
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30
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Cao Z, Yang L, Ye Q, Cui Q, Qi D, Ziener U. Transition-metal salt-containing silica nanocapsules elaborated via salt-induced interfacial deposition in inverse miniemulsions as precursor to functional hollow silica particles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:6509-6518. [PMID: 23679054 DOI: 10.1021/la401468t] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Aqueous core-silica shell nanocapsules were successfully prepared using liquid droplets containing transition-metal salt as templates in inverse miniemulsions. The formation of the silica shell was attributed to the interfacial deposition of silica species induced by the presence of the transition-metal salt. In addition to the control of the particle morphology, the incorporated transition-metal salts could be used to derivatize the particles and confer additional functionalities to the hollow silica particles. To demonstrate the derivatization, the magnetic hollow silica particles were prepared by converting iron salts to magnetic iron oxides by heat treatment. The particle morphology, size, and size distribution were characterized by transmission electron microscopy and scanning electron microscopy. The results show that the particle properties strongly depend on the type and the amount of salts, the amount of tetraethoxysilane (TEOS), the pH of the droplets, and the ratios of 2-hydroxyethyl methacrylate to aqueous HCl solution. The specific surface area and pore properties were characterized by N2 sorption measurements. The pore properties and specific surface area could be tuned by varying the amount of salt. Levels of elements and of iron oxides in the magnetic hollow particles were measured by energy-dispersive X-ray spectroscopy. Iron was distributed homogenously with silicon and oxygen in the sample. The magnetization measured by a magnetic property measurement system confirmed the successful conversion of the iron salts to magnetic iron oxides.
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Affiliation(s)
- Zhihai Cao
- College of Materials, Chemistry and Chemical Engineering and Department of Physics, Hangzhou Normal University, Hangzhou, China.
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31
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van Wijk J, Salari JWO, Zaquen N, Meuldijk J, Klumperman B. Poly(methyl methacrylate)–silica microcapsules synthesized by templating Pickering emulsion droplets. J Mater Chem B 2013; 1:2394-2406. [DOI: 10.1039/c3tb20175a] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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