151
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Fabregat G, Alemán C, Casas MT, Armelin E. Controlling the Morphology of Poly(N-cyanoethylpyrrole). J Phys Chem B 2012; 116:5064-70. [DOI: 10.1021/jp3008688] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Georgina Fabregat
- Departament
d’Enginyeria
Química, ETSEIB, Universitat Politècnica de Catalunya, Av. Diagonal 647, 08028, Barcelona, Spain
- Center for Research
in Nano-Engineering, Universitat Politècnica de Catalunya, Campus Sud, Edifici C’, C/Pasqual
i Vila s/n, Barcelona E-08028, Spain
| | - Carlos Alemán
- Departament
d’Enginyeria
Química, ETSEIB, Universitat Politècnica de Catalunya, Av. Diagonal 647, 08028, Barcelona, Spain
- Center for Research
in Nano-Engineering, Universitat Politècnica de Catalunya, Campus Sud, Edifici C’, C/Pasqual
i Vila s/n, Barcelona E-08028, Spain
| | - Maria T. Casas
- Departament
d’Enginyeria
Química, ETSEIB, Universitat Politècnica de Catalunya, Av. Diagonal 647, 08028, Barcelona, Spain
| | - Elaine Armelin
- Departament
d’Enginyeria
Química, ETSEIB, Universitat Politècnica de Catalunya, Av. Diagonal 647, 08028, Barcelona, Spain
- Center for Research
in Nano-Engineering, Universitat Politècnica de Catalunya, Campus Sud, Edifici C’, C/Pasqual
i Vila s/n, Barcelona E-08028, Spain
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152
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Hashide R, Yoshida K, Kotaki K, Watanabe T, Watahiki R, Takahashi S, Sato K, Anzai JI. Use of anionic polysaccharides for the preparation of insulin-containing layer-by-layer films and their pH stability. Polym Bull (Berl) 2012. [DOI: 10.1007/s00289-012-0745-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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153
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De Geest BG, Willart MA, Hammad H, Lambrecht BN, Pollard C, Bogaert P, De Filette M, Saelens X, Vervaet C, Remon JP, Grooten J, De Koker S. Polymeric multilayer capsule-mediated vaccination induces protective immunity against cancer and viral infection. ACS NANO 2012; 6:2136-49. [PMID: 22303914 DOI: 10.1021/nn205099c] [Citation(s) in RCA: 81] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Recombinant antigens hold high potential to develop vaccines against lethal intracellular pathogens and cancer. However, they are poorly immunogenic and fail to induce potent cellular immunity. In this paper, we demonstrate that polymeric multilayer capsules (PMLC) strongly increase antigen delivery toward professional antigen-presenting cells in vivo, including dendritic cells (DCs), macrophages, and B cells, thereby enforcing antigen presentation and stimulating T cell proliferation. A thorough analysis of the T cell response demonstrated their capacity to induce IFN-γ secreting CD4 and CD8 T cells, in addition to follicular T-helper cells, a recently identified CD4 T cell subset supporting antibody responses. On the B cell level, PMLC-mediated antigen delivery promoted the formation of germinal centers, resulting in increased numbers of antibody-secreting plasma cells and elevated antibody titers. The functional relevance of the induced immune responses was validated in murine models of influenza and melanoma. On a mechanistic level, we have demonstrated the capacity of PMLC to activate the NALP3 inflammasome and trigger the release of the potent pro-inflammatory cytokine IL-1β. Finally, using DC-depleted mice, we have identified DCs as the key mediators of the immunogenic properties of PMLC.
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Affiliation(s)
- Bruno G De Geest
- Laboratory of Pharmaceutical Technology, Department of PharmaceuticsGhent University, Ghent, Belgium.
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154
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Broderick AH, Lockett MR, Buck ME, Yuan Y, Smith LM, Lynn DM. In situ Synthesis of Oligonucleotide Arrays on Surfaces Coated with Crosslinked Polymer Multilayers. CHEMISTRY OF MATERIALS : A PUBLICATION OF THE AMERICAN CHEMICAL SOCIETY 2012; 24:939-945. [PMID: 22611305 PMCID: PMC3352262 DOI: 10.1021/cm202720q] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
We report an approach to the in situ synthesis of oligonucleotide arrays on surfaces coated with crosslinked polymer multilayers. Our approach makes use of methods for the 'reactive' layer-by-layer assembly of thin, amine-reactive multilayers using branched polyethyleneimine (PEI) and the azlactone-functionalized polymer poly(2-vinyl-4,4'-dimethylazlactone) (PVDMA). Post-fabrication treatment of film-coated glass substrates with d-glucamine or 4-amino-1-butanol yielded hydroxyl-functionalized films suitable for the Maskless Array Synthesis (MAS) of oligonucleotide arrays. Glucamine-functionalized films yielded arrays of oligonucleotides with fluorescence intensities and signal-to-noise ratios (after hybridization with fluorescently labeled complementary strands) comparable to those of arrays fabricated on conventional silanized glass substrates. These arrays could be exposed to multiple hybridization-dehybridization cycles with only moderate loss of hybridization density. The versatility of the layer-by-layer approach also permitted synthesis directly on thin sheets of film-coated poly(ethylene terephthalate) (PET) to yield flexible oligonucleotide arrays that could be readily manipulated (e.g., bent) and cut into smaller arrays. To our knowledge, this work presents the first use of polymer multilayers as a substrate for the multi-step synthesis of complex molecules. Our results demonstrate that these films are robust and able to withstand the ~450 individual chemical processing steps associated with MAS (as well as manipulations required to hybridize, image, and dehybridize the arrays) without large-scale cracking, peeling, or delamination of the thin films. The combination of layer-by-layer assembly and MAS provides a means of fabricating functional oligonucleotide arrays on a range of different materials and substrates. This approach may also prove useful for the fabrication of supports for the solid-phase synthesis and screening of other macromolecular or small-molecule agents.
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Affiliation(s)
- Adam H Broderick
- Department of Chemical and Biological Engineering, 1415 Engineering Drive, University of Wisconsin - Madison, Madison, WI 53706
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155
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Yoshida K, Hashide R, Ishii T, Takahashi S, Sato K, Anzai JI. Layer-by-layer films composed of poly(allylamine) and insulin for pH-triggered release of insulin. Colloids Surf B Biointerfaces 2012; 91:274-9. [DOI: 10.1016/j.colsurfb.2011.11.017] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2011] [Revised: 11/09/2011] [Accepted: 11/09/2011] [Indexed: 10/15/2022]
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156
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Xu H, Schönhoff M, Zhang X. Unconventional layer-by-layer assembly: surface molecular imprinting and its applications. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2012; 8:517-523. [PMID: 22213686 DOI: 10.1002/smll.201101884] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2011] [Indexed: 05/31/2023]
Abstract
Layer-by-layer assembly (LbL) is a rich, versatile, and powerful technique for fabricating multilayer thin films with controlled architecture and functions. Singly charged, uncharged, or water-repellent molecules cannot be used directly in conventional LbL assembly. This problem can be solved with unconventional LbL methods, by employing the preassembly of building blocks in solution and the use of these assemblies for LbL formation at the interface. This Concept summarizes different methods of unconventional LbL assembly, including electrostatic complex formation, hydrogen-bonded complexes, block-copolymer micelles, and π-π interaction complexes. These preassembly treatments endow the building blocks with enhanced abilities for advanced functionality, in particular, surface molecular imprinting, a new concept emerging from unconventional LbL. Molecular imprinting approaches are thus conceptually described based on different types of interactions and their great potential in applications is demonstrated by examples such as selective surface patterning and selective filtration.
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Affiliation(s)
- Huaping Xu
- Key Lab of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, P.R. China.
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157
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Wohl BM, Engbersen JF. Responsive layer-by-layer materials for drug delivery. J Control Release 2012; 158:2-14. [DOI: 10.1016/j.jconrel.2011.08.035] [Citation(s) in RCA: 171] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2011] [Accepted: 08/23/2011] [Indexed: 11/30/2022]
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158
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Zhang L, Liu H, Zhao E, Qiu L, Sun J, Shen J. Drying and nondrying layer-by-layer assembly for the fabrication of sodium silicate/TiO2 nanoparticle composite films. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:1816-1823. [PMID: 22185571 DOI: 10.1021/la2043125] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Influences of drying and nondrying steps on structures of layer-by-layer (LbL) assembled sodium silicate/TiO(2) nanoparticles films (donated as silicate/TiO(2) films) have been systematically investigated. The nondrying LbL assembly produces highly porous silicate/TiO(2) films with large thickness. In contrast, the silicate/TiO(2) films fabricated with a drying step after each layer deposition are flat and thin without porous structures. In situ atomic force microscopy (AFM) measurements confirm that the sodium silicate and TiO(2) nanoparticles are deposited in their aggregated forms. A N(2) drying step can disintegrate the aggregated silicate and TiO(2) nanoparticles to produce thin silicate/TiO(2) films with compact structures. Without the drying steps, the aggregated silicate and TiO(2) nanoparticles are well retained, and their LbL assembly produces highly porous silicate/TiO(2) films of large thickness. The highly porous silicate/TiO(2) films are demonstrated to be useful as reusable film adsorbents for dye removal from wastewater because they can adsorb a large amount of cationic organic dyes and decompose them under UV irradiation. The present study is meaningful for exploring drying/nondrying steps for tailoring structure and functions of LbL assembled films.
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Affiliation(s)
- Lianbin Zhang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, PR China
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159
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Mizrahi M, Zakrassov A, Lerner-Yardeni J, Ashkenasy N. Charge transport in vertically aligned, self-assembled peptide nanotube junctions. NANOSCALE 2012; 4:518-524. [PMID: 22116517 DOI: 10.1039/c1nr11068c] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The self-assembly propensity of peptides has been extensively utilized in recent years for the formation of supramolecular nanostructures. In particular, the self-assembly of peptides into fibrils and nanotubes makes them promising building blocks for electronic and electro-optic applications. However, the mechanisms of charge transfer in these wire-like structures, especially in ambient conditions, are not yet fully understood. We describe here a layer-by-layer deposition methodology of short self-assembled cyclic peptide nanotubes, which results in vertically oriented nanotubes on gold substrates. Using this novel deposition methodology, we have fabricated molecular junctions with a conductive atomic force microscopy tip as a second electrode. Studies of the junctions' current-voltage characteristics as a function of the nanotube length revealed an efficient charge transfer in these supramolecular structures, with a low current attenuation constant of 0.1 Å(-1), which indicate that electron transfer is dominated by hopping. Moreover, the threshold voltage to field-emission dominated transport was found to increase with peptide length in a manner that depends on the nature of the contact with the electrodes. The flexibility in the design of the peptide monomers and the ability to control their sequential order over the nanotube by means of the layer-by-layer assembly process, which is demonstrated in this work, can be used to engineer the electronic properties of self-assembled peptide nanotubes toward device applications.
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Affiliation(s)
- Mordechay Mizrahi
- Department of Chemistry, Ben-Gurion University of the Negev, Beer Sheva, Israel
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160
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De Koker S, Hoogenboom R, De Geest BG. Polymeric multilayer capsules for drug delivery. Chem Soc Rev 2012; 41:2867-84. [DOI: 10.1039/c2cs15296g] [Citation(s) in RCA: 324] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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161
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Li C, Li ZY, Zhang J, Wang K, Gong YH, Luo GF, Zhuo RX, Zhang XZ. Porphyrin containing light-responsive capsules for controlled drug release. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm16702f] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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162
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Tong W, Song X, Gao C. Layer-by-layer assembly of microcapsules and their biomedical applications. Chem Soc Rev 2012; 41:6103-24. [DOI: 10.1039/c2cs35088b] [Citation(s) in RCA: 357] [Impact Index Per Article: 29.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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163
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Hu X, Ji J. Covalent Layer-by-Layer Assembly of Hyperbranched Polyether and Polyethyleneimine: Multilayer Films Providing Possibilities for Surface Functionalization and Local Drug Delivery. Biomacromolecules 2011; 12:4264-71. [DOI: 10.1021/bm201137x] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Xiaofen Hu
- MOE Key Laboratory of Macromolecular
Synthesis and Functionalization, Department of Polymer Science and
Engineering, Zhejiang University, Hangzhou
310027, China
- College of
Bioengineering, Zhejiang Chinese Medical University, Hangzhou, 310053,
China
| | - Jian Ji
- MOE Key Laboratory of Macromolecular
Synthesis and Functionalization, Department of Polymer Science and
Engineering, Zhejiang University, Hangzhou
310027, China
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164
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Goh TK, Guntari SN, Ochs CJ, Blencowe A, Mertz D, Connal LA, Such GK, Qiao GG, Caruso F. Nanoengineered films via surface-confined continuous assembly of polymers. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2011; 7:2863-2867. [PMID: 21990191 DOI: 10.1002/smll.201101368] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2011] [Indexed: 05/31/2023]
Affiliation(s)
- Tor Kit Goh
- Department of Chemical and Biomolecular Engineering, The University of Melbourne, Parkville, Victoria, Australia
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165
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Kar M, Pauline M, Sharma K, Kumaraswamy G, Gupta SS. Synthesis of poly-L-glutamic acid grafted silica nanoparticles and their assembly into macroporous structures. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:12124-12133. [PMID: 21863899 DOI: 10.1021/la202036c] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Polypeptide-coated silica nanoparticles represent an interesting class of organic-inorganic hybrids since the ordered secondary structure of the polypeptide grafts imparts functional properties to these nanoparticles. The synthesis of a poly-l-glutamic acid (PLGA) silica nanoparticle hybrid by employing N-carboxyanhydride (NCA) polymerization to synthesize the polypeptide chains and Cu catalyzed azide alkyne cycloaddition reaction to graft these chains onto the silica surface is reported. This methodology enables the synthesis of well-defined polypeptide chains that are attached onto the silica surface at high surface densities. The PLGA-silica conjugate particles are well dispersed in water, and have been thoroughly characterized using multinuclear ((13)C, (29)Si) solid state NMR, thermogravimetric analysis, Fourier transform infrared, dynamic light scattering, and transmission electron microscopy. The pH-dependent reversible aggregation of the PLGA-silica particles, driven by the change in PLGA structure, has also been studied. Preliminary results on the use of aqueous dispersions of silica-PLGA for the preparation of three-dimensional macroporous structures with oriented pores by ice templating methodology are also demonstrated. These macroporous materials, comprising a biocompatible polymer shell covalently attached to rigid inorganic cores, adopts an interesting lamellar structure with fishbone-type architecture.
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Affiliation(s)
- Mrityunjoy Kar
- CReST, Chemical Engineering Division, National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411008, India
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166
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Buck ME, Lynn DM. Layer-by-Layer Fabrication of Covalently Crosslinked and Reactive Polymer Multilayers Using Azlactone-Functionalized Copolymers: A Platform for the Design of Functional Biointerfaces. ADVANCED ENGINEERING MATERIALS 2011; 13:B343-B352. [PMID: 30034272 PMCID: PMC6052878 DOI: 10.1002/adem.201080085] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
We report a method for modulating the physicochemical properties of surfaces that is based on the reactive layer-by-layer fabrication of covalently crosslinked thin films using azlactone-functionalized copolymers. We demonstrate that copolymers containing different molar ratios of methylmethacrylate (MMA) and 2-vinyl-4,4-dimethylazlactone (VDMA) can be alternately deposited with poly(ethyleneimine) to assemble covalently crosslinked thin films. Characterization using ellipsometry demonstrates that, in general, film growth and thickness decrease as the content of reactive, azlactone functionality in the copolymer used to assemble the film decreases. Reflective infrared spectroscopy experiments demonstrate that films fabricated from MMA:VDMA copolymers contain residual azlactone functionality and that these reactive groups can be exploited to modify film-coated surfaces. Fabricating films from MMA:VDMA copolymers containing different compositions permitted modulation of the density of reactive groups within the films and, thus, the extent to which the films are functionalized by exposure to small molecule amines. For example, functionalization of MMA:VDMA copolymer films with the small molecule D-glucamine resulted in films with water contact angles that varied with the composition of the copolymer used to fabricate the film (e.g., as the azlactone content in the film increased, glucamine-modified films became more hydrophilic). We demonstrate further that treatment of copolymer-containing films with glucamine resulted in changes in the numbers of mammalian cells that grow on the surfaces of the films. Our results suggest the basis of methods that could be used to modulate or tune the density of chemical and biological functionality presented on surfaces of interest in a variety of fundamental and applied contexts.
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Affiliation(s)
- Maren E Buck
- Department of Chemistry, 1101 University Avenue, University of Wisconsin-Madison, Madison, WI 53706
| | - David M Lynn
- Department of Chemistry, 1101 University Avenue, University of Wisconsin-Madison, Madison, WI 53706
- Department of Chemical and Biological Engineering, 1415 Engineering Drive, University of Wisconsin-Madison, Madison, WI 53706
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167
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Zhang JJ, Zheng TT, Cheng FF, Zhang JR, Zhu JJ. Toward the Early Evaluation of Therapeutic Effects: An Electrochemical Platform for Ultrasensitive Detection of Apoptotic Cells. Anal Chem 2011; 83:7902-9. [DOI: 10.1021/ac201804b] [Citation(s) in RCA: 73] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Jing-Jing Zhang
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, People’s Republic of China
| | - Ting-Ting Zheng
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, People’s Republic of China
| | - Fang-Fang Cheng
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, People’s Republic of China
| | - Jian-Rong Zhang
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, People’s Republic of China
| | - Jun-Jie Zhu
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, People’s Republic of China
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168
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Click Chemistry for Drug Delivery Nanosystems. Pharm Res 2011; 29:1-34. [DOI: 10.1007/s11095-011-0568-5] [Citation(s) in RCA: 113] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2011] [Accepted: 08/12/2011] [Indexed: 12/13/2022]
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169
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Lisunova MO, Drachuk I, Shchepelina OA, Anderson KD, Tsukruk VV. Direct probing of micromechanical properties of hydrogen-bonded layer-by-layer microcapsule shells with different chemical compositions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:11157-11165. [PMID: 21800830 DOI: 10.1021/la202082w] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The mechanical properties of hydrogen-bonded layer-by-layer (LbL) microcapsule shells constructed from tannic acid (TA) and poly(vinylpyrrolidone) (PVPON) components have been studied in both the dry and swollen states. In the dry state, the value of the elastic modulus was measured to be within 0.6-0.7 GPa, which is lower than the typical elastic modulus for electrostatically assembled LbL shells. Threefold swelling of the LbL shells in water results in a significant reduction of the elastic modulus to values well below 1 MPa, which is typical value seen for highly compliant gel materials. The increase of the molecular weight of the PVPON component from 55 to 1300 kDa promotes chain entanglements and causes a stiffening of the LbL shells with a more than 2-fold increase in elastic modulus value. Moreover, adding a polyethylenimine prime layer to the LbL shell affects the growth of hydrogen-bonded multilayers which consequently results in dramatically stiffer, thicker, and rougher LbL shells with the elastic modulus increasing by more than an order of magnitude, up to 4.3 MPa. An alternation of the elastic properties of very compliant hydrogen-bonded shells by variation of molecular weight is a characteristic feature of weakly bonded LbL shells. Such an ability to alter the elastic modulus in a wide range is critically important for the design of highly compliant microcapsules with tunable mechanical stability, loading ability, and permeability.
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Affiliation(s)
- Milana O Lisunova
- School of Material Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, USA
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170
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Kim M, Byeon M, Bae JS, Moon SY, Yu G, Shin K, Basarir F, Yoon TH, Park JW. Preparation of Ultrathin Films of Molecular Networks through Layer-by-Layer Cross-Linking Polymerization of Tetrafunctional Monomers. Macromolecules 2011. [DOI: 10.1021/ma201480t] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Myungsook Kim
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, 261 Cheomdan Gwagiro, Buk-gu, Gwangju 500-712, Korea
| | - Minseon Byeon
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, 261 Cheomdan Gwagiro, Buk-gu, Gwangju 500-712, Korea
| | - Jae-Sung Bae
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, 261 Cheomdan Gwagiro, Buk-gu, Gwangju 500-712, Korea
| | - Su-Young Moon
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, 261 Cheomdan Gwagiro, Buk-gu, Gwangju 500-712, Korea
| | - Guiduk Yu
- School of Chemical and Biological Engineering, Seoul National University, San 56-1, Shinlim-dong, Kwanak-gu, Seoul 151-744, Korea
| | - Kyusoon Shin
- School of Chemical and Biological Engineering, Seoul National University, San 56-1, Shinlim-dong, Kwanak-gu, Seoul 151-744, Korea
| | - Fevzihan Basarir
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, 261 Cheomdan Gwagiro, Buk-gu, Gwangju 500-712, Korea
| | - Tae-Ho Yoon
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, 261 Cheomdan Gwagiro, Buk-gu, Gwangju 500-712, Korea
| | - Ji-Woong Park
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, 261 Cheomdan Gwagiro, Buk-gu, Gwangju 500-712, Korea
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171
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Gui Z, Qian J, He Y, An Q, Wang X, Tian C, Sun W. Tunable disintegration of layer-by-layer assembly multilayer films based on hydrolytical-polybetaine at wide-range time. J Colloid Interface Sci 2011; 361:122-8. [PMID: 21652045 DOI: 10.1016/j.jcis.2011.05.049] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2011] [Revised: 05/12/2011] [Accepted: 05/13/2011] [Indexed: 01/22/2023]
Abstract
A cationic hydrolytical-polycarboxybetaine (HPCB), poly(N-ethyl acetate-4-vinylpyridinium bromide) was synthesized by incorporating ester group into the side chain of polycarboxybetaine (PCB). The hydrolytic behaviors of HPCB samples in pH 7.4 phosphate buffer saline (PBS) were investigated by FT-IR and (1)H NMR. The layer-by-layer (LbL) assembly of HPCB/poly (sodium 4-styrenesulfonate) PSS and the disintegration of HPCB/PSS multilayer films were monitored by UV-vis absorption spectroscopy, quartz crystal microbalance (QCM) and atomic force microscopy (AFM). The disintegrated behavior of multilayer films was studied in detail by changing the cationic degree of HPCB and the pH of the immersion solution (PBS) in the disintegration process. The disintegration time of HPCB/PSS multilayer films could be controlled widely from 2 min to 30 days in PBS.
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Affiliation(s)
- Zhangliang Gui
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science & Engineering, Zhejiang University, Hangzhou, Zhejiang, China
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172
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Garcia J, Zhang Y, Taylor H, Cespedes O, Webb ME, Zhou D. Multilayer enzyme-coupled magnetic nanoparticles as efficient, reusable biocatalysts and biosensors. NANOSCALE 2011; 3:3721-3730. [PMID: 21792451 DOI: 10.1039/c1nr10411j] [Citation(s) in RCA: 73] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Herein we report the development of a highly active, magnetically retrievable and reusable biocatalyst using multilayer enzyme coupled-magnetic nanoparticles (MNPs) prepared by layer-by-layer assembly using two well-studied enzymes, horseradish peroxidase (HRP) and glucose oxidase (GOX), as a model enzyme system. We show that by combining the use of a biocompatible linker as well as biospecific immobilisation, the first layer enzyme in our HRP(1)-MNP system retains the native activity of the enzyme in solution, and the overall catalytic activity of the multilayer enzyme system, HRP(x)-MNP, increases linearly with the increasing number of enzyme layers. Furthermore, the HRP(x)-MNP system can be conveniently retrieved by using an external magnetic field and reused for 10 consecutive cycles without apparent reduction of catalytic activity. We also report the development of a novel coupled bienzyme, GOX/HRP(x)-MNP, system that can perform bi-enzymatic reactions to couple the colourless GOX-catalyzed reaction to the chromophoric HRP-catalyzed reaction via H(2)O(2) production. This model bienzyme-MNP system can be used for simple, rapid colorimetric quantification of micromolar glucose.
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Affiliation(s)
- Josep Garcia
- School of Chemistry and the Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds, LS2 9JT, UK
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173
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De Koker S, De Cock LJ, Rivera-Gil P, Parak WJ, Auzély Velty R, Vervaet C, Remon JP, Grooten J, De Geest BG. Polymeric multilayer capsules delivering biotherapeutics. Adv Drug Deliv Rev 2011; 63:748-61. [PMID: 21504772 DOI: 10.1016/j.addr.2011.03.014] [Citation(s) in RCA: 142] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2010] [Revised: 01/13/2011] [Accepted: 03/30/2011] [Indexed: 12/18/2022]
Abstract
Polymeric multilayer capsules have emerged as a novel drug delivery platform. These capsules are fabricated through layer-by-layer sequential deposition of polymers onto a sacrificial core template followed by the decomposition of this core yielding hollow capsules. The resulting nanometer thin membrane is permselective, allowing diffusion of water and ions but excluding larger molecules. Moreover, the sequential fabrication procedure allows a precise fine-tuning of the capsules' physicochemical and biological properties. These properties have put polymeric multilayer capsules under major attention in the field of drug delivery. In this review we focus on polymeric multilayer capsule mediated delivery of biotechnological macromolecular drugs such as peptides, proteins and nucleic acids.
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174
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Sato K, Yoshida K, Takahashi S, Anzai JI. pH- and sugar-sensitive layer-by-layer films and microcapsules for drug delivery. Adv Drug Deliv Rev 2011; 63:809-21. [PMID: 21510988 DOI: 10.1016/j.addr.2011.03.015] [Citation(s) in RCA: 153] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2010] [Revised: 01/11/2011] [Accepted: 03/30/2011] [Indexed: 12/17/2022]
Abstract
The present review provides an overview on the recent progress in the development of pH- and sugar-sensitive layer-by-layer (LbL) thin films and microcapsules in relation to their potential applications in drug delivery. pH-sensitive LbL films and microcapsules have been studied for the development of peptide and protein drug delivery systems to the gastrointestinal tract, anti-cancer drugs to tumor cells, anti-inflammatory drugs to inflamed tissues, and the intracellular delivery of DNA, where pH is shifted from neutral to acidic. pH-induced decomposition or permeability changes of LbL films and microcapsules form the basis for the pH-sensitive release of drugs. Sugar-sensitive LbL films and microcapsules have been studied mainly for the development of an artificial pancreas that can release insulin in response to the presence of glucose. Therefore, glucose oxidase, lectin, and phenylboronic acid have been used for the construction of glucose-sensitive LbL films and microcapsules. LbL film-coated islet cells are also candidates for an artificial pancreas. An artificial pancreas would make a significant contribution to improving the quality of life of diabetic patients by replacing repeated subcutaneous insulin injections.
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Affiliation(s)
- Katsuhiko Sato
- Graduate School of Pharmaceutical Sciences, Tohoku University, Aramaki, Aoba-ku, Sendai, Japan
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175
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Dam HH, Caruso F. Construction and degradation of polyrotaxane multilayers. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2011; 23:3026-3029. [PMID: 21567486 DOI: 10.1002/adma.201101210] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2011] [Indexed: 05/30/2023]
Affiliation(s)
- Henk H Dam
- Department of Chemical and Biomolecular Engineering, The University of Melbourne, Victoria, Australia
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176
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Park MH, Agasti SS, Creran B, Kim C, Rotello VM. Controlled and sustained release of drugs from dendrimer-nanoparticle composite films. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2011; 23:2839-2843. [PMID: 21495084 DOI: 10.1002/adma.201004409] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2010] [Revised: 02/15/2011] [Indexed: 05/30/2023]
Affiliation(s)
- Myoung-Hwan Park
- Department of Chemistry, University of Massachusetts, 710 North Pleasant St., Amherst, MA 01003, USA
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177
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Carter JL, Drachuk I, Harbaugh S, Kelley-Loughnane N, Stone M, Tsukruk VV. Truly nonionic polymer shells for the encapsulation of living cells. Macromol Biosci 2011; 11:1244-53. [PMID: 21728238 DOI: 10.1002/mabi.201100129] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2011] [Revised: 05/01/2011] [Indexed: 12/19/2022]
Abstract
Engineering surfaces of living cells with natural or synthetic compounds can mediate intercellular communication and provide a protective barrier from hostile agents. We report on truly nonionic hydrogen-bonded LbL coatings for cell surface engineering. These ultrathin, highly permeable polymer membranes are constructed on living cells without the cationic component typically employed to increase the stability of LbL coatings. Without the cytotoxic cationic PEI pre-layer, the viability of encapsulated cells drastically increases to 94%, in contrast to 20% viability in electrostatically-bonded LbL shells. Moreover, the long-term growth of encapsulated cells is not affected, thus facilitating efficient function of protected cells in hostile environment.
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Affiliation(s)
- Jessica L Carter
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA
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178
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Wang T, Isimjan TT, Chen J, Rohani S. Transparent nanostructured coatings with UV-shielding and superhydrophobicity properties. NANOTECHNOLOGY 2011; 22:265708. [PMID: 21576801 DOI: 10.1088/0957-4484/22/26/265708] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Visible light transparent, UV-shielding and superhydrophobic nanostructured coatings have been successfully fabricated through a facile layer-by-layer deposition of TiO(2) and SiO(2) nanoparticles. The coatings are composed of an underlying UV-shielding TiO(2) layer and a top fully covered protective SiO(2) layer. The resulting coatings can block 100% of UVB and UVC and almost 85% of UVA. The fabricated surfaces have contact angles exceeding 165° after coating with organic PTES (1H, 1H, 2H, 2H-perfluorooctyltriethoxysilane) molecules. The transparent superhydrophobic surfaces exhibit extremely strong UV stability. All coatings retain the initial UV-shielding and superhydrophobic properties even after exposure to 275 nm UV light with a light intensity of 75 mW cm(-2) for 12 h.
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Affiliation(s)
- Taoye Wang
- Research Center of the Ministry of Education for High Gravity Engineering and Technology, Beijing University of Chemical Technology, Beijing, People's Republic of China
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179
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Dontsova D, Keller V, Keller N, Steffanut P, Félix O, Decher G. Photocatalytically Active Polyelectrolyte/Nanoparticle Films for the Elimination of a Model Odorous Gas. Macromol Rapid Commun 2011; 32:1145-9. [DOI: 10.1002/marc.201100192] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2011] [Revised: 05/04/2011] [Indexed: 11/12/2022]
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180
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Johnston AP, Such GK, Ng SL, Caruso F. Challenges facing colloidal delivery systems: From synthesis to the clinic. Curr Opin Colloid Interface Sci 2011. [DOI: 10.1016/j.cocis.2010.11.003] [Citation(s) in RCA: 88] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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181
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182
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Controllable disintegration of temperature-responsive self-assembled multilayer film based on polybetaine. Colloids Surf A Physicochem Eng Asp 2011. [DOI: 10.1016/j.colsurfa.2011.02.049] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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183
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Granicka LH, Antosiak-Iwańska M, Godlewska E, Strawski M, Szklarczyk M, Maranowski B, Kowalewski C, Wiśniewsk J. Conformal nano-thin modified polyelectrolyte coatings for encapsulation of cells. ARTIFICIAL CELLS, BLOOD SUBSTITUTES, AND IMMOBILIZATION BIOTECHNOLOGY 2011; 39:274-80. [PMID: 21506663 DOI: 10.3109/10731199.2011.559645] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Encapsulation of cells in polymeric shells allows for separation of biological material from produced factors, which may find biotechnological and biomedical applications. Human T-lymphocyte cell line Jurkat as well as rat pancreatic islets were encapsulated using LbL technique within shells of polyelectrolyte modified by incorporation of biotin complexed with avidin to improve cell coating and to create the potential ability to elicit specific biochemical responses. The coating with nano-thin modified shells allowed for maintenance of the evaluated cells' integrity and viability during the 8-day culture. The different PE impact may be observed on different biological materials. The islets exhibited lower mitochondrial activity than the Jurkat cells. Nevertheless, coating of cells with polyelectrolyte modified membrane allowed for functioning of both model cell types: 10 μm leukemia cells or 150 μm islets during the culture. Applied membranes maintained the molecular structure during the culture period. The conclusion is that applied modified membrane conformation may be recommended for coating shells for biomedical purposes.
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Affiliation(s)
- L H Granicka
- Institute of Biocybernetics and Biomedical Engineering, Polish Academy of Science, Warsaw, Poland.
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184
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Li M, Ishihara S, Akada M, Liao M, Sang L, Hill JP, Krishnan V, Ma Y, Ariga K. Electrochemical-Coupling Layer-by-Layer (ECC–LbL) Assembly. J Am Chem Soc 2011; 133:7348-51. [DOI: 10.1021/ja202768k] [Citation(s) in RCA: 130] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Mao Li
- World Premier International (WPI) Research Center for Materials Nanoarchitectonics, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Shinsuke Ishihara
- World Premier International (WPI) Research Center for Materials Nanoarchitectonics, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Misaho Akada
- World Premier International (WPI) Research Center for Materials Nanoarchitectonics, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Meiyong Liao
- Sensor Materials Center, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Liwen Sang
- Sensor Materials Center, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Jonathan P. Hill
- World Premier International (WPI) Research Center for Materials Nanoarchitectonics, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
- CREST, Japan Science and Technology Agency (JST), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Venkata Krishnan
- World Premier International (WPI) Research Center for Materials Nanoarchitectonics, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Yuguang Ma
- State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun 130012, P. R. China
| | - Katsuhiko Ariga
- World Premier International (WPI) Research Center for Materials Nanoarchitectonics, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
- CREST, Japan Science and Technology Agency (JST), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
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185
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Kohler D, Schneider M, Krüger M, Lehr CM, Möhwald H, Wang D. Template-assisted polyelectrolyte encapsulation of nanoparticles into dispersible, hierarchically nanostructured microfibers. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2011; 23:1376-1379. [PMID: 21400599 DOI: 10.1002/adma.201004048] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2010] [Revised: 12/22/2010] [Indexed: 05/30/2023]
Affiliation(s)
- Dorothee Kohler
- Max Planck Institute of Colloids and Interfaces, D-14424, Potsdam, Germany
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186
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Lavalle P, Voegel JC, Vautier D, Senger B, Schaaf P, Ball V. Dynamic aspects of films prepared by a sequential deposition of species: perspectives for smart and responsive materials. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2011; 23:1191-221. [PMID: 21264957 DOI: 10.1002/adma.201003309] [Citation(s) in RCA: 161] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2010] [Revised: 10/26/2010] [Indexed: 05/23/2023]
Abstract
The deposition of surface coatings using a step-by-step approach from mutually interacting species allows the fabrication of so called "multilayered films". These coatings are very versatile and easy to produce in environmentally friendly conditions, mostly from aqueous solution. They find more and more applications in many hot topic areas, such as in biomaterials and nanoelectronics but also in stimuli-responsive films. We aim to review the most recent developments in such stimuli-responsive coatings based on layer-by-layer (LBL) depositions in relationship to the properties of these coatings. The most investigated stimuli are based on changes in ionic strength, temperature, exposure to light, and mechanical forces. The possibility to induce a transition from linear to exponential growth in thickness and to change the charge compensation from "intrinsic" to "extrinsic" by controlling parameters such as temperature, pH, and ionic strength are the ways to confer their responsiveness to the films. Chemical post-modifications also allow to significantly modify the film properties.
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Affiliation(s)
- Philippe Lavalle
- Institut National de la Santé et de la Recherche Médicale, Unité 977, 11 rue Humann, Strasbourg Cedex, France
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187
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Li Q, Zhang XL, Yu YS, Qian Y, Dong WF, Li Y, Shi J, Yan J, Wang H. Enhanced sucrose sensing sensitivity of long period fiber grating by self-assembled polyelectrolyte multilayers. REACT FUNCT POLYM 2011. [DOI: 10.1016/j.reactfunctpolym.2010.11.012] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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188
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Dierendonck M, De Koker S, Cuvelier C, Grooten J, Vervaet C, Remon JP, De Geest BG. Facile two-step synthesis of porous antigen-loaded degradable polyelectrolyte microspheres. Angew Chem Int Ed Engl 2011; 49:8620-4. [PMID: 20922728 DOI: 10.1002/anie.201001046] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Marijke Dierendonck
- Laboratory of Pharmaceutical Technology, Department of Pharmaceutics, Ghent University, Harelbekestraat 72, 9000 Ghent, Belgium
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189
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Zhang L, Zheng M, Liu X, Sun J. Layer-by-layer assembly of salt-containing polyelectrolyte complexes for the fabrication of dewetting-induced porous coatings. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:1346-1352. [PMID: 21114278 DOI: 10.1021/la103953n] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The layer-by-layer (LbL) assembly of salt-containing nonstoichiometric polyelectrolyte complexes (PECs) with oppositely charged uncomplexed polyelectrolyte for the fabrication of dewetting-induced porous polymeric films has been systematically investigated. Salt-containing poly(allylamine hydrochloride) (PAH) and poly(acrylic acid) (PAA) complexes (noted as PAH-PAA) with a molar excess of PAH were LbL assembled with polyanion poly(sodium 4-styrenesulfonate) (PSS) to produce PSS/PAH-PAA films. The structure of the PAH-PAA complexes is dependent on the concentration of NaCl added to their aqueous dispersions, which can be used to tailor the structure of the LbL-assembled PSS/PAH-PAA films. Porous PSS/PAH-PAA films are fabricated when salt-containing PAH-PAA complexes with a large amount of added NaCl are used for LbL assembly with PSS. In-situ and ex-situ atomic force microscopy measurements disclose that the dewetting process composed of pore nucleation and pore growth steps leads to the formation of pores in the LbL-assembled PSS/PAH-PAA films. The present study provides a facile way to fabricate porous polymeric films by dewetting LbL-assembled polymeric films comprising salt-containing PECs.
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Affiliation(s)
- Ling Zhang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, People's Republic of China
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190
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Saurer EM, Flessner RM, Buck ME, Lynn DM. Fabrication of Covalently Crosslinked and Amine-Reactive Microcapsules by Reactive Layer-by-Layer Assembly of Azlactone-Containing Polymer Multilayers on Sacrificial Microparticle Templates. JOURNAL OF MATERIALS CHEMISTRY 2011; 21:1736-1745. [PMID: 21383867 PMCID: PMC3048458 DOI: 10.1039/c0jm02633f] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
We report on the fabrication of covalently crosslinked and amine-reactive hollow microcapsules using 'reactive' layer-by-layer assembly to deposit thin polymer films on sacrificial microparticle templates. Our approach is based on the alternating deposition of layers of a synthetic polyamine and a polymer containing reactive azlactone functionality. Multilayered films composed of branched poly(ethylene imine) (BPEI) and poly(2-vinyl-4,4-dimethylazlactone) (PVDMA) were fabricated layer-by-layer on the surfaces of calcium carbonate and glass microparticle templates. After fabrication, these films contained residual azlactone functionality that was accessible for reaction with amine-containing molecules. Dissolution of the calcium carbonate or glass cores using aqueous ethylenediamine tetraacetic acid (EDTA) or hydrofluoric acid (HF), respectively, led to the formation of hollow polymer microcapsules. These microcapsules were robust enough to encapsulate and retain a model macromolecule (FITC-dextran) and were stable for at least 22 hours in high ionic strength environments, in low and high pH solutions, and in several common organic solvents. Significant differences in the behaviors of capsules fabricated on CaCO(3) and glass cores were observed and characterized using scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS). Whereas capsules fabricated on CaCO(3) templates collapsed upon drying, capsules fabricated on glass templates remained rigid and spherical. Characterization using EDS suggested that this latter behavior results, at least in part, from the presence of insoluble metal fluoride salts that are trapped or precipitate within the walls of capsules after etching of the glass cores using HF. Our results demonstrate that the assembly of BPEI/PVDMA films on sacrificial templates can be used to fabricate reactive microcapsules of potential use in a wide range of fields, including catalysis, drug and gene delivery, imaging, and biomedical research.
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Affiliation(s)
- Eric M Saurer
- Department of Chemical and Biological Engineering, University of Wisconsin - Madison, 1415 Engineering Drive, Madison, WI 53706, USA
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191
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Kinnane CR, Such GK, Caruso F. Tuning the Properties of Layer-by-Layer Assembled Poly(acrylic acid) Click Films and Capsules. Macromolecules 2011. [DOI: 10.1021/ma102593k] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Cameron R. Kinnane
- Department of Chemical and Biomolecular Engineering, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Georgina K. Such
- Department of Chemical and Biomolecular Engineering, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Frank Caruso
- Department of Chemical and Biomolecular Engineering, The University of Melbourne, Parkville, Victoria 3010, Australia
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192
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Fu Y, Li SJ, Xu J, Yang M, Zhang JD, Jiao YH, Zhang JC, Zhang K, Jia YG. Facile and efficient approach to speed up layer-by-layer assembly: dipping in agitated solutions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:672-677. [PMID: 21166437 DOI: 10.1021/la104524k] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
A facile and efficient approach has been developed to speed up the fabrication of LBL films through sequential dipping in vigorously agitated solutions. By this agitated-dipping (AD) LBL technique, the multilayer films of PAH and PSS were fabricated. The resulting films were explored by UV-vis spectroscopy, X-ray reflectivity, and AFM. Meanwhile, the comparison of the AD and conventional LBL films was made, which demonstrated that AD LBL can decrease dipping time by more than 15 times without reducing film quality remarkably. In addition, to verify the generality of AD LBL, we studied the AD LBL films of PDDA/PSS and PAH/PAA preliminarily as well. AD LBL promotes the efficiency of conventional LBL greatly while preserving its most advantages, such as simplicity, cheapness, precise control, universality in substrates, recycling use of sample solutions, and so on. It would be a promising alternative to build up LBL films rapidly.
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Affiliation(s)
- Yu Fu
- College of Sciences, Northeastern University, Shenyang 110004, PR China.
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193
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Construction and deconstruction of multilayer films containing polycarboxybetaine: Effect of pH and ionic strength. J Colloid Interface Sci 2011; 353:98-106. [DOI: 10.1016/j.jcis.2010.09.026] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2010] [Revised: 09/05/2010] [Accepted: 09/09/2010] [Indexed: 01/14/2023]
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194
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Azzaroni O, Lau KA. Layer-by-Layer Assemblies in Nanoporous Templates: Nano-Organized Design and Applications of Soft Nanotechnology. SOFT MATTER 2011; 7:8709-8724. [PMID: 22216060 PMCID: PMC3247160 DOI: 10.1039/c1sm05561e] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
The synergistic combination of layer-by-layer (LbL) assembly and nanoporous membrane templating has greatly facilitated the creation of complex and functional nanotubular structures. The approach takes advantage of both the new properties conferred by assembling diverse LbL building blocks and the tight dimensional control offered by nanotemplating to enable new functionalities that arise from the highly anisotropic "one-dimensional" LbL-nanotube format. In this review, we aim to convey the key developments and provide a current snap-shot of such templated LbL nanoarchitectures. We survey recent developments that have enabled the assembly of polymers, biomolecules and inorganic nanoparticles "à la carte", via electrostatic, covalent and specific (bio)recognition interactions. We also discuss the emerging mechanistic understanding of the LbL assembly process within the nanopore environment. Finally, we present a diverse range of LbL nanotube "devices" to illustrate the versatility of the nanotemplated LbL toolbox for generating functional soft nanotechnology.
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Affiliation(s)
- Omar Azzaroni
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA) – Departamento de Química – Facultad de Ciencias Exactas – Universidad Nacional de La Plata – CONICET – CC 16 Suc.4 (1900) La Plata – Argentina
| | - K.H. Aaron Lau
- Biomedical Engineering Department, Chemistry of Life Processes Institute, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208 - USA
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195
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Wang Y, Hosta-Rigau L, Lomas H, Caruso F. Nanostructured polymer assemblies formed at interfaces: applications from immobilization and encapsulation to stimuli-responsive release. Phys Chem Chem Phys 2011; 13:4782-801. [DOI: 10.1039/c0cp02287j] [Citation(s) in RCA: 78] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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196
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De Koker S, Lambrecht BN, Willart MA, van Kooyk Y, Grooten J, Vervaet C, Remon JP, De Geest BG. Designing polymeric particles for antigen delivery. Chem Soc Rev 2011; 40:320-39. [PMID: 21060941 DOI: 10.1039/b914943k] [Citation(s) in RCA: 107] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
By targeting dendritic cells, polymeric carriers in the nano to lower micron range constitute very interesting tools for antigen delivery. In this critical review, we review how new immunological insights can be exploited to design new carriers allowing one to tune immune responses and to further increase vaccine potency (137 references).
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Affiliation(s)
- Stefaan De Koker
- Laboratory of Pharmaceutical Technology, Department of Pharmaceutics, Ghent University, Ghent, Belgium
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197
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Such GK, Johnston APR, Caruso F. Engineered hydrogen-bonded polymer multilayers: from assembly to biomedical applications. Chem Soc Rev 2011; 40:19-29. [DOI: 10.1039/c0cs00001a] [Citation(s) in RCA: 306] [Impact Index Per Article: 23.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
In this tutorial review, developments in hydrogen-bonded LbL materials are discussed, with an emphasis on loading and release of cargo for biomedical applications.
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Affiliation(s)
- Georgina K. Such
- Centre for Nanoscience and Nanotechnology
- Department of Chemical and Biomolecular Engineering
- The University of Melbourne
- Victoria 3010
- Australia
| | - Angus P. R. Johnston
- Centre for Nanoscience and Nanotechnology
- Department of Chemical and Biomolecular Engineering
- The University of Melbourne
- Victoria 3010
- Australia
| | - Frank Caruso
- Centre for Nanoscience and Nanotechnology
- Department of Chemical and Biomolecular Engineering
- The University of Melbourne
- Victoria 3010
- Australia
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198
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Yu Y, Zhang H, Zhang C, Cui S. Facile fabrication of robust multilayer films: visible light-triggered chemical cross-linking by the catalysis of a ruthenium(ii) complex. Chem Commun (Camb) 2011; 47:929-31. [DOI: 10.1039/c0cc03713c] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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199
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Zhang W, Zhang A, Guan Y, Zhang Y, Zhu XX. Silver-loading in uncrosslinked hydrogen-bonded LBL films: structure change and improved stability. ACTA ACUST UNITED AC 2011. [DOI: 10.1039/c0jm02369h] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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200
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Hosta-Rigau L, Chandrawati R, Saveriades E, Odermatt PD, Postma A, Ercole F, Breheney K, Wark KL, Städler B, Caruso F. Noncovalent Liposome Linkage and Miniaturization of Capsosomes for Drug Delivery. Biomacromolecules 2010; 11:3548-55. [DOI: 10.1021/bm101020e] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Leticia Hosta-Rigau
- Department of Chemical and Biomolecular Engineering, The University of Melbourne, Parkville, Victoria 3010, Australia, CSIRO, Molecular and Health Technologies, Clayton, Victoria 3168, Australia, CSIRO, Molecular and Health Technologies, Parkville, Victoria 3052, Australia, and Interdisciplinary Nanoscience Center, Aarhus University, Aarhus 8000, Denmark
| | - Rona Chandrawati
- Department of Chemical and Biomolecular Engineering, The University of Melbourne, Parkville, Victoria 3010, Australia, CSIRO, Molecular and Health Technologies, Clayton, Victoria 3168, Australia, CSIRO, Molecular and Health Technologies, Parkville, Victoria 3052, Australia, and Interdisciplinary Nanoscience Center, Aarhus University, Aarhus 8000, Denmark
| | - Elli Saveriades
- Department of Chemical and Biomolecular Engineering, The University of Melbourne, Parkville, Victoria 3010, Australia, CSIRO, Molecular and Health Technologies, Clayton, Victoria 3168, Australia, CSIRO, Molecular and Health Technologies, Parkville, Victoria 3052, Australia, and Interdisciplinary Nanoscience Center, Aarhus University, Aarhus 8000, Denmark
| | - Pascal D. Odermatt
- Department of Chemical and Biomolecular Engineering, The University of Melbourne, Parkville, Victoria 3010, Australia, CSIRO, Molecular and Health Technologies, Clayton, Victoria 3168, Australia, CSIRO, Molecular and Health Technologies, Parkville, Victoria 3052, Australia, and Interdisciplinary Nanoscience Center, Aarhus University, Aarhus 8000, Denmark
| | - Almar Postma
- Department of Chemical and Biomolecular Engineering, The University of Melbourne, Parkville, Victoria 3010, Australia, CSIRO, Molecular and Health Technologies, Clayton, Victoria 3168, Australia, CSIRO, Molecular and Health Technologies, Parkville, Victoria 3052, Australia, and Interdisciplinary Nanoscience Center, Aarhus University, Aarhus 8000, Denmark
| | - Francesca Ercole
- Department of Chemical and Biomolecular Engineering, The University of Melbourne, Parkville, Victoria 3010, Australia, CSIRO, Molecular and Health Technologies, Clayton, Victoria 3168, Australia, CSIRO, Molecular and Health Technologies, Parkville, Victoria 3052, Australia, and Interdisciplinary Nanoscience Center, Aarhus University, Aarhus 8000, Denmark
| | - Kerry Breheney
- Department of Chemical and Biomolecular Engineering, The University of Melbourne, Parkville, Victoria 3010, Australia, CSIRO, Molecular and Health Technologies, Clayton, Victoria 3168, Australia, CSIRO, Molecular and Health Technologies, Parkville, Victoria 3052, Australia, and Interdisciplinary Nanoscience Center, Aarhus University, Aarhus 8000, Denmark
| | - Kim L. Wark
- Department of Chemical and Biomolecular Engineering, The University of Melbourne, Parkville, Victoria 3010, Australia, CSIRO, Molecular and Health Technologies, Clayton, Victoria 3168, Australia, CSIRO, Molecular and Health Technologies, Parkville, Victoria 3052, Australia, and Interdisciplinary Nanoscience Center, Aarhus University, Aarhus 8000, Denmark
| | - Brigitte Städler
- Department of Chemical and Biomolecular Engineering, The University of Melbourne, Parkville, Victoria 3010, Australia, CSIRO, Molecular and Health Technologies, Clayton, Victoria 3168, Australia, CSIRO, Molecular and Health Technologies, Parkville, Victoria 3052, Australia, and Interdisciplinary Nanoscience Center, Aarhus University, Aarhus 8000, Denmark
| | - Frank Caruso
- Department of Chemical and Biomolecular Engineering, The University of Melbourne, Parkville, Victoria 3010, Australia, CSIRO, Molecular and Health Technologies, Clayton, Victoria 3168, Australia, CSIRO, Molecular and Health Technologies, Parkville, Victoria 3052, Australia, and Interdisciplinary Nanoscience Center, Aarhus University, Aarhus 8000, Denmark
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