101
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Terentyeva TG, Matras A, Van Rossom W, Hill JP, Ji Q, Ariga K. Bioactive flake–shell capsules: soft silica nanoparticles for efficient enzyme immobilization. J Mater Chem B 2013; 1:3248-3256. [DOI: 10.1039/c3tb20461h] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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102
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Yang H, Li M, Fu L, Tang A, Mann S. Controlled assembly of Sb₂S₃ nanoparticles on silica/polymer nanotubes: insights into the nature of hybrid interfaces. Sci Rep 2013; 3:1336. [PMID: 23434879 PMCID: PMC3580322 DOI: 10.1038/srep01336] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2012] [Accepted: 02/06/2013] [Indexed: 11/09/2022] Open
Abstract
Silica nanotubes can serve as high aspect ratio templates for the deposition of inorganic nanoparticles to form novel hybrids. However, the nature of the interfacial binding is still an unresolved challenge when considered at the atomic level. In this work, novel nanocomposites have been successfully fabricated by the controlled nucleation and assembly of Sb₂S₃ nanoparticles on the surface of mercaptopropyl-functionalized silica/polymer hybrid nanotubes (HNTs). The Sb₂S₃ nanoparticles were strongly attached to the HNTs surface by interactions between the pendent thiol groups and inorganic sulfur atoms. Detailed analysis of the geometric and electronic structure using first-principle density functional theory demonstrates charge transfer from the nanoparticles to the underlying HNTs at the Sb₂S₃/HNTs interfaces. Formation of a packed array of Sb₂S₃ nanoparticles on the HNTs results in mixing of the electronic states of the components, and is mediated by the mercaptopropyl bridges between Sb₂S₃ and the outer layer of the HNTs.
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Affiliation(s)
- Huaming Yang
- Department of Inorganic Materials, School of Resources Processing and Bioengineering, Central South University, Changsha 410083, China
- Centre for Organized Matter Chemistry, School of Chemistry, University of Bristol, Bristol BS8 1TS, UK
| | - Mei Li
- Centre for Organized Matter Chemistry, School of Chemistry, University of Bristol, Bristol BS8 1TS, UK
| | - Liangjie Fu
- Department of Inorganic Materials, School of Resources Processing and Bioengineering, Central South University, Changsha 410083, China
| | - Aidong Tang
- Department of Inorganic Materials, School of Resources Processing and Bioengineering, Central South University, Changsha 410083, China
| | - Stephen Mann
- Centre for Organized Matter Chemistry, School of Chemistry, University of Bristol, Bristol BS8 1TS, UK
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103
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Rapid exfoliation of rectorite in quaternized carboxymethyl chitosan. Carbohydr Polym 2012; 90:1826-30. [DOI: 10.1016/j.carbpol.2012.07.014] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2012] [Revised: 05/22/2012] [Accepted: 07/05/2012] [Indexed: 11/22/2022]
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104
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Production of l-theanine using glutaminase encapsulated in carbon-coated mesoporous silica with high pH stability. Biochem Eng J 2012. [DOI: 10.1016/j.bej.2012.07.012] [Citation(s) in RCA: 28] [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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105
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Carregal-Romero E, Llobera A, Cadarso VJ, Darder M, Aranda P, Domínguez C, Ruiz-Hitzky E, Fernández-Sanchez C. One-step patterning of hybrid xerogel materials for the fabrication of disposable solid-state light emitters. ACS APPLIED MATERIALS & INTERFACES 2012; 4:5029-5037. [PMID: 22950757 DOI: 10.1021/am3014696] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The one-step room-temperature micropatterning of a fluorophore-doped xerogel material on silicon oxide substrates is reported. The organo-alkoxysilane precursors and organic fluorescent dyes, as well as the polymerization experimental conditions, were tailored in order to obtain a highly homogeneous transparent material suitable for photonic applications. A thorough structural characterization was carried out by Fourier transform infrared (FT-IR) spectroscopy, (29)Si nuclear magnetic resonance ((29)Si NMR), thermogravimetric analysis (TGA), N(2) adsorption Brunauer-Emmett-Teller (BET) porosimetry, and confocal microscopy. These studies revealed a stable nonporous highly cross-linked polymer network containing evenly dispersed fluorescent molecules. Xerogel microstructures having thicknesses between 4 and 80 μm and height-to-width ratios between 0.04 and 4, as well as showing different geometries, from well arrays to waveguides, were patterned in a single step by micromolding in capillaries (MIMIC) soft lithographic technique. The reliability of the replication process was tested by bright-field optical microscopy and scanning electron microscopy (SEM) that show the close fidelity of the microstructures to the applied mold. The optical performance of the developed material was demonstrated by fabricating waveguides and evaluating their corresponding spectral response, obtaining absorption bands, at the expected excitation wavelengths of the corresponding fluorescent dyes and gain due to photonic re-emission (fluorescence) at their corresponding dye emission wavelengths. The hybrid xerogel material and the application of the simple fabrication technology presented herein can be directly applied to the development of cost-effective photonic components, as could be light emitters, to be readily integrated in single-use lab-on-chip devices and other polymeric microsystems.
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Affiliation(s)
- Ester Carregal-Romero
- Instituto de Microelectrónica de Barcelona IMB-CNM (CSIC), Campus UAB, 08193, Bellaterra, Barcelona, Spain
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106
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Design and properties of biopolymer–silica hybrid materials: The example of pectin-based biodegradable hydrogels. PURE APPL CHEM 2012. [DOI: 10.1351/pac-con-11-11-18] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The association of natural polymers with silica is a fruitful strategy to design novel hybrid structures with potential applications in the fields of biotechnology, medicine, and environmental sciences. Here we illustrate the principles of formation, the structure, and the properties of such biohybrid systems by the specific example of silica–pectin porous materials. The influence of the silica source, i.e., aqueous silicates and tetraethoxysilane (TEOS), was more specifically addressed. The alkoxide precursor may be associated with the polysaccharide in a wide range of concentrations. In contrast, the high initial viscosity and fast condensation rate of silicates limits the range of accessible compositions. Owing to weak interactions between the mineral and organic components, silicification does not improve the thermal stability of the polymer but has a strong impact on the water stability of the materials, which depends on the silica source. It is shown that the stability of the silica–pectin hybrid materials during enzymatic degradation is optimum for low carbohydrate content and high silica content, independently of the inorganic precursor.
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107
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Qazvini NT, Bolisetty S, Adamcik J, Mezzenga R. Self-Healing Fish Gelatin/Sodium Montmorillonite Biohybrid Coacervates: Structural and Rheological Characterization. Biomacromolecules 2012; 13:2136-47. [DOI: 10.1021/bm3005319] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Nader Taheri Qazvini
- Polymer Division,
School of Chemistry, College of Science, University of Tehran, P.O. Box 14155-6455, Tehran, Iran
| | - Sreenath Bolisetty
- Food and Soft Materials Laboratory, Department of Health Science and Technology, ETH Zurich, Schmelzbergstr. 9, LFO E22, 8092 Zurich,
Switzerland
| | - Jozef Adamcik
- Food and Soft Materials Laboratory, Department of Health Science and Technology, ETH Zurich, Schmelzbergstr. 9, LFO E22, 8092 Zurich,
Switzerland
| | - Raffaele Mezzenga
- Food and Soft Materials Laboratory, Department of Health Science and Technology, ETH Zurich, Schmelzbergstr. 9, LFO E22, 8092 Zurich,
Switzerland
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108
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Okada T, Ide Y, Ogawa M. Organic-Inorganic Hybrids Based on Ultrathin Oxide Layers: Designed Nanostructures for Molecular Recognition. Chem Asian J 2012; 7:1980-92. [DOI: 10.1002/asia.201101015] [Citation(s) in RCA: 126] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2011] [Indexed: 11/12/2022]
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109
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Polyoxotungstate-Surfactant Layered Crystal toward Conductive Inorganic-Organic Hybrid. CRYSTALS 2012. [DOI: 10.3390/cryst2020362] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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110
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Aimé C, Coradin T. Nanocomposites from biopolymer hydrogels: Blueprints for white biotechnology and green materials chemistry. ACTA ACUST UNITED AC 2012. [DOI: 10.1002/polb.23061] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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111
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Wu J, Silvent J, Coradin T, Aimé C. Biochemical investigation of the formation of three-dimensional networks from DNA-grafted large silica particles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:2156-2165. [PMID: 22084966 DOI: 10.1021/la2037372] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
DNA is used to rationally build up networks of silica nanoparticles (SiNPs) based on the molecular recognition properties of complementary sequences. Network self-assembly is controlled from DNA covalently grafted at the surface of chemically modified SiNPs. Two strategies are compared, where grafted DNA sequences are designed in a three-strand system using noncomplementary sequences and an extra DNA linker, or in a two-strand approach for direct hybridization. In this paper, both systems are compared in terms of DNA hybridization stability, network size, and three-dimensional organization using a combination of dynamic light scattering and electron microscopy. The observed differences are discussed in terms of hybridization interactions between DNA sequences in particle-free systems through fluorescence, circular dichroism, and UV spectroscopy techniques.
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Affiliation(s)
- Jiangyu Wu
- UPMC-Université Paris 06, CNRS, Laboratoire de Chimie de la Matière Condensée de Paris, Collège de France, 11 place Marcelin Berthelot, F-75005 Paris
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112
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Ariga K, Vinu A, Yamauchi Y, Ji Q, Hill JP. Nanoarchitectonics for Mesoporous Materials. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2012. [DOI: 10.1246/bcsj.20110162] [Citation(s) in RCA: 609] [Impact Index Per Article: 50.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Katsuhiko Ariga
- World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS)
- JST, CREST
| | - Ajayan Vinu
- World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS)
- Australian Institute for Bioengineering and Nanotechnology (AIBN), Corner College and Cooper Rds (Bldg 75), The University of Queensland
| | - Yusuke Yamauchi
- World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS)
- Faculty of Science and Engineering, Waseda University
- Precursory Research for Embryonic Science and Technology (PRESTO), Japan Science and Technology Agency (JST)
| | - Qingmin Ji
- World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS)
| | - Jonathan P. Hill
- World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS)
- JST, CREST
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113
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Johnston CT, Premachandra GS, Szabo T, Lok J, Schoonheydt RA. Interaction of biological molecules with clay minerals: a combined spectroscopic and sorption study of lysozyme on saponite. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:611-619. [PMID: 22047516 DOI: 10.1021/la203161n] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The interaction of hen egg white lysozyme (HEWL) with Na- and Cs-exchanged saponite was investigated using sorption, structural, and spectroscopic methods as a model system to study clay-protein interactions. HEWL sorption to Na- and Cs-saponite was determined using the bicinchoninic acid (BCA) assay, thermogravimetric analysis, and C and N analysis. For Na-saponite, the TGA and elemental analysis-derived sorption maximum was 600 mg/g corresponding to a surface coverage of 0.85 ng/mm(2) with HEWL occupying 526 m(2)/g based on a cross-sectional area of 13.5 nm(2)/molecule. HEWL sorption on Na-saponite was accompanied by the release of 9.5 Na(+) ions for every molecule of HEWL sorbed consistent with an ion exchange mechanism between the positively charged HEWL (IEP 11) and the negatively charged saponite surface. The d-spacing of the HEWL-Na-saponite complex increased to a value of 4.4 nm consistent with the crystallographic dimensions of HEWL of 3 × 3 × 4.5 nm. In the case of Cs-saponite, there was no evidence of interlayer sorption; however, sorption of HEWL to the "external" surface of Cs-saponite showed a high affinity isotherm. FTIR and Raman analysis of the amide I region of the HEWL-saponite films prepared from water and D(2)O showed little perturbation to the secondary structure of the protein. The overall hydrophilic nature of the HEWL-Na-saponite complex was determined by water vapor sorption measurements. The clay retained its hydrophilic character with a water content of 18% at high humidity corresponding to 240 H(2)O molecules per molecule of HEWL.
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Affiliation(s)
- Cliff T Johnston
- Birck Nanotechnology Center, Purdue University, 915 West State Street, West Lafayette, Indiana 47907-2054, United States.
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114
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O'Dell WB, Beatty KJ, Kuo-Hsiang Tang J, Blankenship RE, Urban VS, O'Neill H. Sol–gel entrapped light harvesting antennas: immobilization and stabilization of chlorosomes for energy harvesting. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm34357f] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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115
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Tong DG, Chu W, Wu P, Zhang L. Retracted Article: Honeycomb-like Co–B amorphous alloy catalysts assembled by a solution plasma process show enhanced catalytic hydrolysis activity for hydrogen generation. RSC Adv 2012. [DOI: 10.1039/c2ra01321e] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A novel solution plasma process was developed to assemble honeycomb-like Co–B amorphous alloy catalysts with 253.33 m2 g−1 specific surface area using triethanolamine (TEA) as a soft template.
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Affiliation(s)
- Dong Ge Tong
- Mineral Resources Chemistry Key Laboratory of Sichuan Higher Education Institutions
- College of Materials and Chemistry & Chemical Engineering
- Chengdu University of Technology
- China
- Institute of green catalysis and synthesis
| | - Wei Chu
- College of Chemical Engineering
- Sichuan University
- China
| | - Ping Wu
- Mineral Resources Chemistry Key Laboratory of Sichuan Higher Education Institutions
- College of Materials and Chemistry & Chemical Engineering
- Chengdu University of Technology
- China
- Institute of green catalysis and synthesis
| | - Li Zhang
- Mineral Resources Chemistry Key Laboratory of Sichuan Higher Education Institutions
- College of Materials and Chemistry & Chemical Engineering
- Chengdu University of Technology
- China
- Institute of green catalysis and synthesis
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116
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Si S, Taubert A, Mantion A, Rogez G, Rabu P. Peptide-intercalated layered metal hydroxides: effect of peptide chain length and side chain functionality on structural, optical and magnetic properties. Chem Sci 2012. [DOI: 10.1039/c2sc01087a] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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117
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Erdem A, Kuralay F, Çubukçu HE, Congur G, Karadeniz H, Canavar E. Sensitive sepiolite-carbon nanotubes based disposable electrodes for direct detection of DNA and anticancer drug–DNA interactions. Analyst 2012; 137:4001-4. [DOI: 10.1039/c2an35181a] [Citation(s) in RCA: 26] [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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118
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Ruiz-Hitzky E, Darder M, Fernandes FM, Zatile E, Palomares FJ, Aranda P. Supported graphene from natural resources: easy preparation and applications. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2011; 23:5250-5255. [PMID: 22299138 DOI: 10.1002/adma.201101988] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
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119
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Tagaya M, Ikoma T, Yoshioka T, Xu Z, Tanaka J. Immobilization of folic acid on Eu3+-doped nanoporous silica spheres. Chem Commun (Camb) 2011; 47:8430-2. [DOI: 10.1039/c1cc12058a] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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