1
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Kong J, Li L, Zeng Q, Long J, He H, Wang Y, Liu S, Li X. Production of 4-Ethylphenol from Lignin Depolymerization in a Novel Surfactant-Free Microemulsion Reactor. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.1c03636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Juanhua Kong
- School of Chemistry and Chemical Engineering, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China
| | - Lixia Li
- School of Chemistry and Chemical Engineering, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China
| | - Qiang Zeng
- School of Chemistry and Chemical Engineering, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China
| | - Jinxing Long
- School of Chemistry and Chemical Engineering, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China
| | - Hongyan He
- Beijing Key Laboratory of Ionic Liquids Clean Process, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
| | - Yingying Wang
- South China Advanced Institute for Soft Matter Science and Technology, South China University of Technology, Guangzhou 510640, China
| | - Sijie Liu
- School of Chemistry and Chemical Engineering, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China
| | - Xuehui Li
- School of Chemistry and Chemical Engineering, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China
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2
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Chen AA, Do A, Pascal TA. The phase diagram of carbon dioxide from correlation functions and a many-body potential. J Chem Phys 2021; 155:024503. [PMID: 34266271 DOI: 10.1063/5.0054314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
The phase stability and equilibria of carbon dioxide are investigated from 125-325 K and 1-10 000 atm using extensive molecular dynamics (MD) simulations and the Two-Phase Thermodynamics (2PT) method. We devise a direct approach for calculating phase diagrams, in general, by considering the separate chemical potentials of the isolated phase at specific points on the P-T diagram. The unique ability of 2PT to accurately and efficiently approximate the entropy and Gibbs energy of liquids allows for assignment of phase boundaries from relatively short (∼100 ps) MD simulations. We validate our approach by calculating the critical properties of the flexible elementary physical model 2, showing good agreement with previous results. We show, however, that the incorrect description of the short-range Pauli force and the lack of molecular charge polarization lead to deviations from experiments at high pressures. We, thus, develop a many-body, fluctuating charge model for CO2, termed CO2-Fq, from high level quantum mechanics (QM) calculations that accurately capture the condensed phase vibrational properties of the solid (including the Fermi resonance at 1378 cm-1) as well as the diffusional properties of the liquid, leading to overall excellent agreement with experiments over the entire phase diagram. This work provides an efficient computational approach for determining phase diagrams of arbitrary systems and underscores the critical role of QM charge reorganization physics in molecular phase stability.
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Affiliation(s)
- Amanda A Chen
- Department of NanoEngineering and Chemical Engineering, University of California San Diego, La Jolla, San Diego, California 92023, USA
| | - Alexandria Do
- Department of NanoEngineering and Chemical Engineering, University of California San Diego, La Jolla, San Diego, California 92023, USA
| | - Tod A Pascal
- Department of NanoEngineering and Chemical Engineering, University of California San Diego, La Jolla, San Diego, California 92023, USA
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3
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Kong J, Li L, Zeng Q, Cai Z, Wang Y, He H, Liu S, Li X. Oxidation of organosolv lignin in a novel surfactant-free microemulsion reactor. BIORESOURCE TECHNOLOGY 2021; 321:124466. [PMID: 33321297 DOI: 10.1016/j.biortech.2020.124466] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Revised: 11/23/2020] [Accepted: 11/25/2020] [Indexed: 06/12/2023]
Abstract
Lignin is considered as a promising substitute for fossil resources, but its efficient conversion remains a huge challenge due to the structural complexity and immiscibility with typical solvents. Herein, a series of surfactant-free microemulsion reactors comprised of n-octane, water and n-propanol were designed and their corresponding phase behaviors alongside their ability to intensify oxidative depolymerization of lignin were explored. Experimental results show that the phenolic monomer yield improves substantially (40-500 wt%) by comparison with processes performed in a single solvent. Detailed characterizations also suggest that the above intensification is rationalized by the solubilization effect of microemulsion system and directional aggregation of lignin at the microemulsion interface.
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Affiliation(s)
- Juanhua Kong
- School of Chemistry and Chemical Engineering, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China
| | - Lixia Li
- School of Chemistry and Chemical Engineering, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China
| | - Qiang Zeng
- School of Chemistry and Chemical Engineering, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China
| | - Zhenping Cai
- School of Chemistry and Chemical Engineering, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China
| | - Yingying Wang
- South China Advanced Institute for Soft Matter Science and Technology, South China University of Technology, Guangzhou 510640, China
| | - Hongyan He
- Beijing Key Laboratory of Ionic Liquids Clean Process, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
| | - Sijie Liu
- School of Chemistry and Chemical Engineering, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China.
| | - Xuehui Li
- School of Chemistry and Chemical Engineering, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China.
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4
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Zhu H, Li Y, Zhou D, Xu Q, Yin J. Molecular dynamics study on microstructure of supercritical CO2 microemulsions containing ionic liquids. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.125272] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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5
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The self-assembly and microscopic interfacial properties of a supercritical CO2 microemulsion having hydrotropes: Atom-level observation from molecular dynamics simulation. J CO2 UTIL 2020. [DOI: 10.1016/j.jcou.2020.01.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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6
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Shim Y. Computer simulation study of fluorocarbon phosphate surfactant based aqueous reverse micelle in supercritical CO 2: roles of surfactant functional groups, ionic strength, and phase changes in CO 2. Phys Chem Chem Phys 2020; 22:3434-3445. [PMID: 31984986 DOI: 10.1039/c9cp06613f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Structural and dynamic properties of an aqueous micelle organized from fluorocarbon phosphate surfactant molecules in supercritical carbon dioxide (CO2) are investigated via molecular dynamics computer simulations. The roles of the functional groups and ionic strength of the surfactants on the formation of reverse micelles in supercritical CO2, and related water dynamics characterized as translational and reorientational dynamics, are systematically demonstrated by employing three different phosphate-based surfactants paired with sodium cations. The strong electrostatic interactions between the phosphate head groups and sodium cations result in formation of an aqueous core inside the surfactant aggregates, where water molecules are bonded together with loss of the tetrahedral hydrogen bonded network found in bulk water. It is found that all the three surfactants with CO2-philic fluorocarbon double tails build up well-stabilized reverse micelles in supercritical CO2, avoiding direct contacts between CO2 and water molecules. Despite this, the surfactant with a carboxylic ester linkage between the phosphate head and fluorocarbon tail group tends to coordinate water molecules toward sustaining the inter-water hydrogen bonds, indicating better efficiency at covering the aqueous core with hydrophobic groups compared to one without a carboxylic ester group. As for water molecules confined in the reverse micelle, their translational and reorientational motions, and fluctuating dynamics of the inter-water hydrogen bonds, significantly slow down compared to bulk water at ambient temperature. The water dynamics become more restricted with an increase in ionic strength of the anionic surfactant; this is attributed to divalent surfactant heads and sodium cations being more tightly bound together with bonding to water compared to monovalent ones. Lastly, the structural and dynamic changes of the reverse micelle caused by a phase change in CO2 are monitored with gradually decreasing temperature and pressure from the supercritical to gaseous state for CO2. The average reverse micelle structure equilibrated in supercritical CO2 is found to remain stable over a time period of 0.2 ms through a depressurization process to gaseous CO2. We note that the diverse pathways of surfactant self-aggregation in gaseous CO2 could be controlled by the preceding solvation procedure in the supercritical regime which governs the final aggregated structures in gaseous CO2.
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Affiliation(s)
- Youngseon Shim
- CAE Group, Autonomous Material Development Laboratory, Samsung Advanced Institute of Technology, Samsung Electronics, Suwon, Gyeonggi 16678, Korea.
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7
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Cui J, Sandahl M, Wendt OF, Rodriguez‐Meizoso I. Extraction with Water‐in‐Carbon Dioxide Microemulsions: A Case Study on Steviol Glycosides. J SURFACTANTS DETERG 2019. [DOI: 10.1002/jsde.12325] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Jingwen Cui
- Centre for Analysis and Synthesis, Department of ChemistryLund University P.O. Box 124, SE‐22100 Lund Sweden
| | - Margareta Sandahl
- Centre for Analysis and Synthesis, Department of ChemistryLund University P.O. Box 124, SE‐22100 Lund Sweden
| | - Ola F. Wendt
- Centre for Analysis and Synthesis, Department of ChemistryLund University P.O. Box 124, SE‐22100 Lund Sweden
| | - Irene Rodriguez‐Meizoso
- Centre for Analysis and Synthesis, Department of ChemistryLund University P.O. Box 124, SE‐22100 Lund Sweden
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8
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Grimaldi N, Rojas PE, Stehle S, Cordoba A, Schweins R, Sala S, Luelsdorf S, Piña D, Veciana J, Faraudo J, Triolo A, Braeuer AS, Ventosa N. Pressure-Responsive, Surfactant-Free CO 2-Based Nanostructured Fluids. ACS NANO 2017; 11:10774-10784. [PMID: 28846386 PMCID: PMC5707624 DOI: 10.1021/acsnano.7b02500] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/11/2017] [Accepted: 08/28/2017] [Indexed: 06/07/2023]
Abstract
Microemulsions are extensively used in advanced material and chemical processing. However, considerable amounts of surfactant are needed for their formulation, which is a drawback due to both economic and ecological reasons. Here, we describe the nanostructuration of recently discovered surfactant-free, carbon dioxide (CO2)-based microemulsion-like systems in a water/organic-solvent/CO2 pressurized ternary mixture. "Water-rich" nanodomains embedded into a "water-depleted" matrix have been observed and characterized by the combination of Raman spectroscopy, molecular dynamics simulations, and small-angle neutron scattering. These single-phase fluids show a reversible, pressure-responsive nanostructuration; the "water-rich" nanodomains at a given pressure can be instantaneously degraded/expanded by increasing/decreasing the pressure, resulting in a reversible, rapid, and homogeneous mixing/demixing of their content. This pressure-triggered responsiveness, together with other inherent features of these fluids, such as the absence of any contaminant in the ternary mixture (e.g., surfactant), their spontaneous formation, and their solvation capability (enabling the dissolution of both hydrophobic and hydrophilic molecules), make them appealing complex fluid systems to be used in molecular material processing and in chemical engineering.
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Affiliation(s)
- Natascia Grimaldi
- Institut
de Ciencia de Materials de Barcelona (ICMAB-CSIC) and Nanomol Technologies
SA, Modul de Recerca B, Campus UAB, 08193 Bellaterra, Spain
| | - Paula Elena Rojas
- Institut
de Ciencia de Materials de Barcelona (ICMAB-CSIC) and Nanomol Technologies
SA, Modul de Recerca B, Campus UAB, 08193 Bellaterra, Spain
- Centro
de Investigacion Biomedica en Red de Bioingenieria, Biomateriales y Nanomedicina (CIBER-BBN), 28029 Madrid, Spain
| | - Simon Stehle
- Lehrstuhl
für Technische Thermodynamik (LTT), Friedrich-Alexander-Universitaet Erlangen-Nuernberg (FAU), Am Weichselgarten 8, 91058 Erlangen, Germany
- Erlangen
Graduate School in Advanced Optical Technologies (SAOT), Friedrich Alexander-Universitaet Erlangen-Nuernberg
(FAU), Paul-Gordan-Straße
6, 91052 Erlangen, Germany
| | - Alba Cordoba
- Institut
de Ciencia de Materials de Barcelona (ICMAB-CSIC) and Nanomol Technologies
SA, Modul de Recerca B, Campus UAB, 08193 Bellaterra, Spain
- Centro
de Investigacion Biomedica en Red de Bioingenieria, Biomateriales y Nanomedicina (CIBER-BBN), 28029 Madrid, Spain
| | - Ralf Schweins
- Large
Scale Structures Group, Institut Laue-Langevin, 71 Avenue des Martyrs, CS 20156, F-38042 Grenoble Cedex 9, France
| | - Santi Sala
- Institut
de Ciencia de Materials de Barcelona (ICMAB-CSIC) and Nanomol Technologies
SA, Modul de Recerca B, Campus UAB, 08193 Bellaterra, Spain
- Centro
de Investigacion Biomedica en Red de Bioingenieria, Biomateriales y Nanomedicina (CIBER-BBN), 28029 Madrid, Spain
| | - Stefan Luelsdorf
- Institut
für Physikalische Chemie, Universität
Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| | - David Piña
- Institut
de Ciencia de Materials de Barcelona (ICMAB-CSIC) and Nanomol Technologies
SA, Modul de Recerca B, Campus UAB, 08193 Bellaterra, Spain
- Centro
de Investigacion Biomedica en Red de Bioingenieria, Biomateriales y Nanomedicina (CIBER-BBN), 28029 Madrid, Spain
| | - Jaume Veciana
- Institut
de Ciencia de Materials de Barcelona (ICMAB-CSIC) and Nanomol Technologies
SA, Modul de Recerca B, Campus UAB, 08193 Bellaterra, Spain
- Centro
de Investigacion Biomedica en Red de Bioingenieria, Biomateriales y Nanomedicina (CIBER-BBN), 28029 Madrid, Spain
| | - Jordi Faraudo
- Institut
de Ciencia de Materials de Barcelona (ICMAB-CSIC) and Nanomol Technologies
SA, Modul de Recerca B, Campus UAB, 08193 Bellaterra, Spain
| | - Alessandro Triolo
- Laboratorio
Liquidi Ionici, Istituto di Struttura della
Materia-CNR (ISM-CNR), Rome 00133, Italy
| | - Andreas Siegfried Braeuer
- Lehrstuhl
für Technische Thermodynamik (LTT), Friedrich-Alexander-Universitaet Erlangen-Nuernberg (FAU), Am Weichselgarten 8, 91058 Erlangen, Germany
- Erlangen
Graduate School in Advanced Optical Technologies (SAOT), Friedrich Alexander-Universitaet Erlangen-Nuernberg
(FAU), Paul-Gordan-Straße
6, 91052 Erlangen, Germany
| | - Nora Ventosa
- Institut
de Ciencia de Materials de Barcelona (ICMAB-CSIC) and Nanomol Technologies
SA, Modul de Recerca B, Campus UAB, 08193 Bellaterra, Spain
- Centro
de Investigacion Biomedica en Red de Bioingenieria, Biomateriales y Nanomedicina (CIBER-BBN), 28029 Madrid, Spain
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9
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Ren HR, Liang XD, Zhou D, Yin JZ. Study on the Phase Behavior and Molecular Dynamics Simulation of a Supercritical Carbon Dioxide Microemulsion Containing Ionic Liquid. Ind Eng Chem Res 2017. [DOI: 10.1021/acs.iecr.7b00452] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Hong-Rui Ren
- State Key Laboratory of Fine
Chemicals, School of Chemical Machinery, Dalian University of Technology, Dalian 116024, China
| | - Xiang-Dong Liang
- State Key Laboratory of Fine
Chemicals, School of Chemical Machinery, Dalian University of Technology, Dalian 116024, China
| | - Dan Zhou
- State Key Laboratory of Fine
Chemicals, School of Chemical Machinery, Dalian University of Technology, Dalian 116024, China
| | - Jian-Zhong Yin
- State Key Laboratory of Fine
Chemicals, School of Chemical Machinery, Dalian University of Technology, Dalian 116024, China
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10
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Luo T, Zhang J, Tan X, Liu C, Wu T, Li W, Sang X, Han B, Li Z, Mo G, Xing X, Wu Z. Water-in-Supercritical CO2
Microemulsion Stabilized by a Metal Complex. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201608695] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Tian Luo
- Beijing National Laboratory for Molecular Sciences; CAS Key Laboratory of Colloid and Interface and Thermodynamics; Institute of Chemistry; Chinese Academy of Sciences; University of Chinese Academy of Sciences; Department of Chemistry; Capital Normal University; Institute of High Energy Physics; Chinese Academy of Sciences; China
| | - Jianling Zhang
- Beijing National Laboratory for Molecular Sciences; CAS Key Laboratory of Colloid and Interface and Thermodynamics; Institute of Chemistry; Chinese Academy of Sciences; University of Chinese Academy of Sciences; Department of Chemistry; Capital Normal University; Institute of High Energy Physics; Chinese Academy of Sciences; China
| | - Xiuniang Tan
- Beijing National Laboratory for Molecular Sciences; CAS Key Laboratory of Colloid and Interface and Thermodynamics; Institute of Chemistry; Chinese Academy of Sciences; University of Chinese Academy of Sciences; Department of Chemistry; Capital Normal University; Institute of High Energy Physics; Chinese Academy of Sciences; China
| | - Chengcheng Liu
- Beijing National Laboratory for Molecular Sciences; CAS Key Laboratory of Colloid and Interface and Thermodynamics; Institute of Chemistry; Chinese Academy of Sciences; University of Chinese Academy of Sciences; Department of Chemistry; Capital Normal University; Institute of High Energy Physics; Chinese Academy of Sciences; China
| | - Tianbin Wu
- Beijing National Laboratory for Molecular Sciences; CAS Key Laboratory of Colloid and Interface and Thermodynamics; Institute of Chemistry; Chinese Academy of Sciences; University of Chinese Academy of Sciences; Department of Chemistry; Capital Normal University; Institute of High Energy Physics; Chinese Academy of Sciences; China
| | - Wei Li
- Beijing National Laboratory for Molecular Sciences; CAS Key Laboratory of Colloid and Interface and Thermodynamics; Institute of Chemistry; Chinese Academy of Sciences; University of Chinese Academy of Sciences; Department of Chemistry; Capital Normal University; Institute of High Energy Physics; Chinese Academy of Sciences; China
| | - Xinxin Sang
- Beijing National Laboratory for Molecular Sciences; CAS Key Laboratory of Colloid and Interface and Thermodynamics; Institute of Chemistry; Chinese Academy of Sciences; University of Chinese Academy of Sciences; Department of Chemistry; Capital Normal University; Institute of High Energy Physics; Chinese Academy of Sciences; China
| | - Buxing Han
- Beijing National Laboratory for Molecular Sciences; CAS Key Laboratory of Colloid and Interface and Thermodynamics; Institute of Chemistry; Chinese Academy of Sciences; University of Chinese Academy of Sciences; Department of Chemistry; Capital Normal University; Institute of High Energy Physics; Chinese Academy of Sciences; China
| | - Zhihong Li
- Beijing National Laboratory for Molecular Sciences; CAS Key Laboratory of Colloid and Interface and Thermodynamics; Institute of Chemistry; Chinese Academy of Sciences; University of Chinese Academy of Sciences; Department of Chemistry; Capital Normal University; Institute of High Energy Physics; Chinese Academy of Sciences; China
| | - Guang Mo
- Beijing National Laboratory for Molecular Sciences; CAS Key Laboratory of Colloid and Interface and Thermodynamics; Institute of Chemistry; Chinese Academy of Sciences; University of Chinese Academy of Sciences; Department of Chemistry; Capital Normal University; Institute of High Energy Physics; Chinese Academy of Sciences; China
| | - Xueqing Xing
- Beijing National Laboratory for Molecular Sciences; CAS Key Laboratory of Colloid and Interface and Thermodynamics; Institute of Chemistry; Chinese Academy of Sciences; University of Chinese Academy of Sciences; Department of Chemistry; Capital Normal University; Institute of High Energy Physics; Chinese Academy of Sciences; China
| | - Zhonghua Wu
- Beijing National Laboratory for Molecular Sciences; CAS Key Laboratory of Colloid and Interface and Thermodynamics; Institute of Chemistry; Chinese Academy of Sciences; University of Chinese Academy of Sciences; Department of Chemistry; Capital Normal University; Institute of High Energy Physics; Chinese Academy of Sciences; China
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11
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Luo T, Zhang J, Tan X, Liu C, Wu T, Li W, Sang X, Han B, Li Z, Mo G, Xing X, Wu Z. Water-in-Supercritical CO2
Microemulsion Stabilized by a Metal Complex. Angew Chem Int Ed Engl 2016; 55:13533-13537. [DOI: 10.1002/anie.201608695] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2016] [Indexed: 12/17/2022]
Affiliation(s)
- Tian Luo
- Beijing National Laboratory for Molecular Sciences; CAS Key Laboratory of Colloid and Interface and Thermodynamics; Institute of Chemistry; Chinese Academy of Sciences; University of Chinese Academy of Sciences; Department of Chemistry; Capital Normal University; Institute of High Energy Physics; Chinese Academy of Sciences; China
| | - Jianling Zhang
- Beijing National Laboratory for Molecular Sciences; CAS Key Laboratory of Colloid and Interface and Thermodynamics; Institute of Chemistry; Chinese Academy of Sciences; University of Chinese Academy of Sciences; Department of Chemistry; Capital Normal University; Institute of High Energy Physics; Chinese Academy of Sciences; China
| | - Xiuniang Tan
- Beijing National Laboratory for Molecular Sciences; CAS Key Laboratory of Colloid and Interface and Thermodynamics; Institute of Chemistry; Chinese Academy of Sciences; University of Chinese Academy of Sciences; Department of Chemistry; Capital Normal University; Institute of High Energy Physics; Chinese Academy of Sciences; China
| | - Chengcheng Liu
- Beijing National Laboratory for Molecular Sciences; CAS Key Laboratory of Colloid and Interface and Thermodynamics; Institute of Chemistry; Chinese Academy of Sciences; University of Chinese Academy of Sciences; Department of Chemistry; Capital Normal University; Institute of High Energy Physics; Chinese Academy of Sciences; China
| | - Tianbin Wu
- Beijing National Laboratory for Molecular Sciences; CAS Key Laboratory of Colloid and Interface and Thermodynamics; Institute of Chemistry; Chinese Academy of Sciences; University of Chinese Academy of Sciences; Department of Chemistry; Capital Normal University; Institute of High Energy Physics; Chinese Academy of Sciences; China
| | - Wei Li
- Beijing National Laboratory for Molecular Sciences; CAS Key Laboratory of Colloid and Interface and Thermodynamics; Institute of Chemistry; Chinese Academy of Sciences; University of Chinese Academy of Sciences; Department of Chemistry; Capital Normal University; Institute of High Energy Physics; Chinese Academy of Sciences; China
| | - Xinxin Sang
- Beijing National Laboratory for Molecular Sciences; CAS Key Laboratory of Colloid and Interface and Thermodynamics; Institute of Chemistry; Chinese Academy of Sciences; University of Chinese Academy of Sciences; Department of Chemistry; Capital Normal University; Institute of High Energy Physics; Chinese Academy of Sciences; China
| | - Buxing Han
- Beijing National Laboratory for Molecular Sciences; CAS Key Laboratory of Colloid and Interface and Thermodynamics; Institute of Chemistry; Chinese Academy of Sciences; University of Chinese Academy of Sciences; Department of Chemistry; Capital Normal University; Institute of High Energy Physics; Chinese Academy of Sciences; China
| | - Zhihong Li
- Beijing National Laboratory for Molecular Sciences; CAS Key Laboratory of Colloid and Interface and Thermodynamics; Institute of Chemistry; Chinese Academy of Sciences; University of Chinese Academy of Sciences; Department of Chemistry; Capital Normal University; Institute of High Energy Physics; Chinese Academy of Sciences; China
| | - Guang Mo
- Beijing National Laboratory for Molecular Sciences; CAS Key Laboratory of Colloid and Interface and Thermodynamics; Institute of Chemistry; Chinese Academy of Sciences; University of Chinese Academy of Sciences; Department of Chemistry; Capital Normal University; Institute of High Energy Physics; Chinese Academy of Sciences; China
| | - Xueqing Xing
- Beijing National Laboratory for Molecular Sciences; CAS Key Laboratory of Colloid and Interface and Thermodynamics; Institute of Chemistry; Chinese Academy of Sciences; University of Chinese Academy of Sciences; Department of Chemistry; Capital Normal University; Institute of High Energy Physics; Chinese Academy of Sciences; China
| | - Zhonghua Wu
- Beijing National Laboratory for Molecular Sciences; CAS Key Laboratory of Colloid and Interface and Thermodynamics; Institute of Chemistry; Chinese Academy of Sciences; University of Chinese Academy of Sciences; Department of Chemistry; Capital Normal University; Institute of High Energy Physics; Chinese Academy of Sciences; China
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12
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Liu B, Shi J, Wang M, Zhang J, Sun B, Shen Y, Sun X. Reduction in interfacial tension of water–oil interface by supercritical CO2 in enhanced oil recovery processes studied with molecular dynamics simulation. J Supercrit Fluids 2016. [DOI: 10.1016/j.supflu.2015.11.001] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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13
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Piekart J, Łuczak J. Transport properties of microemulsions with ionic liquid apolar domains as a function of ionic liquid content. RSC Adv 2016. [DOI: 10.1039/c6ra13061e] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The conductivity, dynamic viscosity and diffusion coefficient of aqueous ionic liquid microemulsions were measured as a function of ionic liquid content. The conclusions from transport properties were supported by UV-Vis as well as FTIR measurements.
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Affiliation(s)
- Jakub Piekart
- Department of Chemical Technology
- Chemical Faculty
- Gdańsk University of Technology
- 80-233 Gdańsk
- Poland
| | - Justyna Łuczak
- Department of Chemical Technology
- Chemical Faculty
- Gdańsk University of Technology
- 80-233 Gdańsk
- Poland
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14
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Vyhmeister E, Valdés-González H, Reyes-Bozo L, Rodríguez-Maecker R, Muscat A, Estévez LA, Suleiman D. In-Situ FTIR Kinetic Study in the Silylation of Low-k Films with Hexamethyldisilazane Dissolved in Supercritical CO2. CHEM ENG COMMUN 2015. [DOI: 10.1080/00986445.2015.1124098] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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15
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Yang Y, Liu L, Huang X, Tan X, Luo T, Li W. Temperature-induced vesicle to micelle transition in cationic/cationic mixed surfactant systems. SOFT MATTER 2015; 11:8848-8855. [PMID: 26395000 DOI: 10.1039/c5sm01825k] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Temperature-induced vesicle to micelle transition (VMT), which has rarely been reported in cationic/cationic mixed surfactant systems, was systemically studied in a didodecyldimethylammonium bromide (DDAB)/dodecyltrimethylammonium chloride (DTAC) aqueous solution. We investigated the effect of temperature on DDAB/DTAC aqueous solutions by means of turbidity, conductivity, cryo-TEM, a UV-vis spectrophotometer, and a steady-state fluorescence spectrometer. It was found that increasing temperature could induce the transformation from the vesicle to the micelle in this cationic/cationic mixed surfactant system. The degree of transformation can be easily controlled by the operation temperature. Additionally, by adjusting the proportion of the mixed cationic/cationic systems and employing cationic surfactants with different chain-lengths, we were able to conclude that the hydrophobic tail length of the surfactant affects the aggregation behavior of cationic/cationic mixed surfactant systems as a function of temperature. It is universal to induce the transformation from the vesicle to the micelle by temperature in cationic/cationic mixed surfactant systems. A possible mechanism for the temperature-induced VMT was proposed based on the experimental results.
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Affiliation(s)
- Yanjuan Yang
- Department of Chemistry, Capital Normal University, Beijing 100048, China.
| | - Lifei Liu
- Department of Chemistry, Capital Normal University, Beijing 100048, China.
| | - Xin Huang
- Department of Chemistry, Capital Normal University, Beijing 100048, China.
| | - Xiuniang Tan
- Department of Chemistry, Capital Normal University, Beijing 100048, China.
| | - Tian Luo
- Department of Chemistry, Capital Normal University, Beijing 100048, China.
| | - Wei Li
- Department of Chemistry, Capital Normal University, Beijing 100048, China.
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16
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Boyère C, Jérôme C, Debuigne A. Input of supercritical carbon dioxide to polymer synthesis: An overview. Eur Polym J 2014. [DOI: 10.1016/j.eurpolymj.2014.07.019] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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17
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In situ FTIR experimental results in the silylation of low-k films with hexamethyldisilazane dissolved in supercritical carbon dioxide. J Supercrit Fluids 2014. [DOI: 10.1016/j.supflu.2014.01.019] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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18
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19
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Bai T, Ge R, Gao Y, Chai J, Slattery JM. The effect of water on the microstructure and properties of benzene/[bmim][AOT]/[bmim][BF4] microemulsions. Phys Chem Chem Phys 2013; 15:19301-11. [DOI: 10.1039/c3cp53441c] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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20
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Xu J, Yin A, Zhao J, Li D, Hou W. Surfactant-Free Microemulsion Composed of Oleic Acid, n-Propanol, and H2O. J Phys Chem B 2012; 117:450-6. [DOI: 10.1021/jp310282a] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jie Xu
- State Key Laboratory Base of
Eco-chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, People's Republic of
China
| | - Aolin Yin
- State Key Laboratory Base of
Eco-chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, People's Republic of
China
| | - Jikuan Zhao
- State Key Laboratory Base of
Eco-chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, People's Republic of
China
| | - Dongxiang Li
- State Key Laboratory Base of
Eco-chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, People's Republic of
China
| | - Wanguo Hou
- State Key Laboratory Base of
Eco-chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, People's Republic of
China
- Key Laboratory for
Colloid and
Interface Chemistry of Education Ministry, Shandong University, Jinan 250100, People's Republic of China
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21
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Xue Z, Zhang J, Peng L, Li J, Mu T, Han B, Yang G. Nanosized Poly(ethylene glycol) Domains within Reverse Micelles Formed in CO2. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201206197] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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22
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Xue Z, Zhang J, Peng L, Li J, Mu T, Han B, Yang G. Nanosized Poly(ethylene glycol) Domains within Reverse Micelles Formed in CO2. Angew Chem Int Ed Engl 2012; 51:12325-9. [DOI: 10.1002/anie.201206197] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2012] [Indexed: 11/06/2022]
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23
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24
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Ghosh K, Rankin SE, Lehmler HJ, Knutson BL. Processing of surfactant templated nano-structured silica films using compressed carbon dioxide as interpreted from in situ fluorescence spectroscopy. J Phys Chem B 2012; 116:11646-55. [PMID: 22946494 DOI: 10.1021/jp305113b] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The local environment and dynamics of compressed carbon dioxide (CO(2)) penetration in surfactant templated silica film synthesis is interpreted from the in situ fluorescence emission spectra of pyrene (Py) and a modified pyrene probe. Pyrene emission in cetyltrimethylammonium bromide (CTAB) and cetylpyridinium bromide (CPB) templated silica films is monitored immediately after casting and during processing with gaseous and supercritical (sc) CO(2) (17-172 bar, 45 °C). The solvatochromic emission spectra of pyrene in CTAB templated films suggest CO(2) penetration in both the micelle interface and its interior. An anchored derivative of pyrene, 1-pyrenehexadecanoic acid (C(16)-pyr), is established for probing CPB films, where the pyrene moiety is preferentially oriented toward the micelle interior, thus limiting quenching by the pyridinium headgroup of CPB. CO(2) processing of CPB templated silica films results in an increase in the time scale for probe mobility, suggesting an increased time scale of silica condensation through CO(2) processing. The mobility of C(16)-pyr increases with pressure from gaseous to sc CO(2) processing and persists for over 5 h for sc CO(2) processing at 172 bar and 45 °C compared to about 25 min for the unprocessed film. The delivery of CO(2) soluble solutes to specific regions of surfactant templated mesoporous materials is examined via the nonradiative energy transfer (NRET) between pyrene and CO(2)-solubilized naphthalene.
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Affiliation(s)
- Kaustav Ghosh
- Department of Chemical and Materials Engineering, University of Kentucky, Lexington, Kentucky 40506-0046, USA
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25
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Thanthiriwatte KS, Duke JR, Jackson VE, Felmy AR, Dixon DA. High-Level Ab Initio Predictions of the Energetics of mCO2·(H2O)n (n = 1–3, m = 1–12) Clusters. J Phys Chem A 2012; 116:9718-29. [DOI: 10.1021/jp306594h] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- K. Sahan Thanthiriwatte
- Department of Chemistry, The University of Alabama, Shelby Hall, Box 870336,
Tuscaloosa, Alabama 35487-0336, United States
| | - Jessica R. Duke
- Department of Chemistry, The University of Alabama, Shelby Hall, Box 870336,
Tuscaloosa, Alabama 35487-0336, United States
| | - Virgil E. Jackson
- Department of Chemistry, The University of Alabama, Shelby Hall, Box 870336,
Tuscaloosa, Alabama 35487-0336, United States
| | - Andrew R. Felmy
- Fundamental and Computational
Sciences Division, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - David A. Dixon
- Department of Chemistry, The University of Alabama, Shelby Hall, Box 870336,
Tuscaloosa, Alabama 35487-0336, United States
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26
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Sagisaka M, Iwama S, Yoshizawa A, Mohamed A, Cummings S, Eastoe J. Effective and efficient surfactant for CO2 having only short fluorocarbon chains. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:10988-10996. [PMID: 22738302 DOI: 10.1021/la301305q] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
A previous study (Langmuir2011, 27, 5772) found the fluorinated double-tail sulfogulutarate 8FG(EO)(2) to act as a superefficient solubilizer for water in supercritical CO(2) (W/CO(2)) microemulsions. To explore more economic CO(2)-philic surfactants with high solubilizing power as well as rapid solubilization rates, the effects of fluorocarbon chain length and linking group were examined with sodium 1,5-bis(1H,1H,2H,2H-perfluoroalkyloxy)-1,5-dioxopentane-2-sulfonates (nFG(EO)(2), fluorocarbon chain length n = 4, 6, 8) and sodium 1,4-bis(1H,1H,2H,2H-perfluoroalkyloxy)-1,4-dioxobutane-2-sulfonate (nFS(EO)(2), n = 4, 8). Visual observation and UV-vis spectral measurements with methyl orange as a reporter dye indicated a maximum water-to-surfactant molar ratio (W(0)) in the microemulsions, which was 60-80 for nFG(EO)(2) and 40-50 for nFG(EO)(2). Although it is normally expected that high solubilizing power requires long fluorocarbon surfactant chains, the shortest fluorocarbon 4FG(EO)(2) interestingly achieved the highest W(0) (80) transparent single-phase W/CO(2) microemulsion. In addition, a very rapid solubilization of loaded water into CO(2) was observed for 4FG(EO)(2) even at a high W(0) of ~80.
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Affiliation(s)
- Masanobu Sagisaka
- Department of Frontier Materials Chemistry, Graduate School of Science and Technology, Hirosaki University, Hirosaki, Aomori, Japan.
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27
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Rao VG, Ghosh S, Ghatak C, Mandal S, Brahmachari U, Sarkar N. Designing a New Strategy for the Formation of IL-in-Oil Microemulsions. J Phys Chem B 2012; 116:2850-5. [DOI: 10.1021/jp2110488] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Vishal Govind Rao
- Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, WB, India
| | - Surajit Ghosh
- Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, WB, India
| | - Chiranjib Ghatak
- Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, WB, India
| | - Sarthak Mandal
- Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, WB, India
| | - Udita Brahmachari
- Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, WB, India
| | - Nilmoni Sarkar
- Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, WB, India
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28
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Sagisaka M, Iwama S, Hasegawa S, Yoshizawa A, Mohamed A, Cummings S, Rogers SE, Heenan RK, Eastoe J. Super-efficient surfactant for stabilizing water-in-carbon dioxide microemulsions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:5772-5780. [PMID: 21486003 DOI: 10.1021/la104990c] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The fluorinated double-tailed glutarate anionic surfactant, sodium 1,5-bis[(1H,1H,2H,2H-perfluorodecyl)oxy]-1,5-dioxopentane-2-sulfonate (8FG(EO)(2)), was found to stabilize water-in-supercritical CO(2) microemulsions with high water-to-surfactant molar ratios (W(0)). Studies were carried out here to obtain detailed information on the phase stability and nanostructure of the microemulsions by using a high-pressure UV-vis dye probe and small-angle neutron scattering (SANS) measurements. The UV-vis spectra, with methyl orange as a reporter dye, indicated a maximum attainable W(0) of 60 at 45 and 75 °C, and SANS profiles indicated regular droplet swelling with a linear relationship between the water core nanodroplet radius and W(0). This represents the highest water solubilization reported to date for any water-in-CO(2) microemulsion. Further analysis of the SANS data indicated critical packing parameters for 8FG(EO)(2) at the microemulsion interface >1.34, representing approximately 1.1 times the value for common aerosol-OT in water-in-heptane microemulsions under equivalent conditions.
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Affiliation(s)
- Masanobu Sagisaka
- Department of Frontier Materials Chemistry, Graduate School of Science and Technology, Hirosaki University, 3 Bunkyo-cho, Hirosaki, Aomori 036-8561, Japan.
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29
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Takebayashi Y, Sagisaka M, Sue K, Yoda S, Hakuta Y, Furuya T. Near-Infrared Spectroscopic Study of a Water-in-Supercritical CO2 Microemulsion as a Function of the Water Content. J Phys Chem B 2011; 115:6111-8. [DOI: 10.1021/jp201722f] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yoshihiro Takebayashi
- Nanosystem Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Higashi 1-1-1, Tsukuba, Ibaraki 305-8565, Japan
| | - Masanobu Sagisaka
- Faculty of Science and Technology, Hirosaki University, Bunkyo-cho 3, Hirosaki, Aomori 036-8561, Japan
| | - Kiwamu Sue
- Nanosystem Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Higashi 1-1-1, Tsukuba, Ibaraki 305-8565, Japan
| | - Satoshi Yoda
- Nanosystem Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Higashi 1-1-1, Tsukuba, Ibaraki 305-8565, Japan
| | - Yukiya Hakuta
- Nanosystem Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Higashi 1-1-1, Tsukuba, Ibaraki 305-8565, Japan
| | - Takeshi Furuya
- Nanosystem Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Higashi 1-1-1, Tsukuba, Ibaraki 305-8565, Japan
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30
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Zhang J, Han B, Zhao Y, Li J, Yang G. Switching micellization of pluronics in water by CO2. Chemistry 2011; 17:4266-72. [PMID: 21381137 DOI: 10.1002/chem.201002153] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2010] [Indexed: 12/18/2022]
Abstract
The micellization of amphiphilic molecules is an interesting topic from both theoretical and practical points of view. Herein we have studied the effects of compressed CO(2) on the micellization of Pluronics in water by means of fluorescence, UV/Vis spectra, and small-angle X-ray scattering. It was found that CO(2) can induce the micellization of Pluronics in water, and the micelle can return to the initial state of molecular dispersion after depressurization. Therefore, the micellization of Pluronics in water can be switched through the easy control of pressure. Different from the common micelles with hydrophobic cores, interestingly, this CO(2)-induced micelle has an amphiphilic core, in which hydrophobic and hydrophilic domains coexist. On account of the ability to dissolve both polar and nonpolar components in the micellar core, the CO(2)-induced micelles can improve the reagent compatibilities frequently encountered in various applications. In an attempt to address this advantage, this micelle was utilized as template to the one-step synthesis of Au/silica core-shell composite nanoparticles. Furthermore, the underlying mechanism for the CO(2)-induced micellization of Pluronics in water was investigated by a series of experiments.
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Affiliation(s)
- Jianling Zhang
- Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, PR China.
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31
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Klostermann M, Foster T, Schweins R, Lindner P, Glatter O, Strey R, Sottmann T. Microstructure of supercritical CO2-in-water microemulsions: a systematic contrast variation study. Phys Chem Chem Phys 2011; 13:20289-301. [DOI: 10.1039/c1cp22000d] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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32
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Xue L, Qiu H, Li Y, Lu L, Huang X, Qu Y. A novel water-in-ionic liquid microemulsion and its interfacial effect on the activity of laccase. Colloids Surf B Biointerfaces 2010; 82:432-7. [PMID: 20951007 DOI: 10.1016/j.colsurfb.2010.09.016] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2010] [Revised: 09/12/2010] [Accepted: 09/20/2010] [Indexed: 11/18/2022]
Abstract
It is of great significance to develop an appropriate water-in-ionic liquid (W/IL) microemulsion suitable for the expression of the catalytic activity of a given enzyme. In this paper, the phase diagram of a new AOT/Triton X-100/H(2)O/[Bmim][PF(6)] pseudo ternary system is presented. With the aid of nonionic surfactant Triton X-100, AOT could be dissolved in hydrophobic ionic liquid [Bmim][PF(6)], forming a large single phase microemulsion region. The water-in-[Bmim][PF(6)] (W/IL) microemulsion domain was identified electrochemically by using K(3)Fe(CN)(6) as a probe. The existence of W/IL microemulsions was demonstrated spectrophotometrically by using CoCl(2) as a probe. New evidences from the FTIR spectroscopic study, which was first introduced to the W/IL microemulsion by substituting D(2)O for H(2)O to eliminate the spectral interference, demonstrated that there existed bulk water at larger ω(0) values (ω(0) was defined as the molar ratio of water to the total surfactant) in the W/IL microemulsion, which had remained unclear before. In addition to the inorganic salts, biomacromolecule laccase could be solubilized in the W/IL microemulsion. The laccase hosted in the microemulsion exhibited a catalytic activity and the activity could be regulated by the composition of the interfacial membrane.
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Affiliation(s)
- Luyan Xue
- Key Laboratory of Colloid & Interface Chemistry of the Education Ministry of China, Shandong University, Jinan 250100, PR China
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33
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F'Oliakoff M, George MW, Howdle SM, Bagratashvili VN, Han BX, Yan HK. Supercritical fluids: Clean solvents for green chemistry. CHINESE J CHEM 2010. [DOI: 10.1002/cjoc.19990170303] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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34
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Sagisaka M, Oasa J, Hasegawa S, Toyokawa R, Yoshizawa A. Novel fluorinated double-tail surfactant having high microemulsifying ability in water/supercritical CO2 system. J Supercrit Fluids 2010. [DOI: 10.1016/j.supflu.2009.12.016] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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35
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Fanun M, Makharza S, Sowwan M. UV-Visible and AFM Studies of Nonionic Microemulsions. J DISPER SCI TECHNOL 2010. [DOI: 10.1080/01932690903213188] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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36
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Huang CC, Hohn KL. Tetrakis(dimethylamino)ethylene Chemiluminescence (TDE CL) Characterization of the CMC and the Viscosity of Reversed Microemulsions. J Phys Chem B 2010; 114:2685-94. [DOI: 10.1021/jp9077618] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Chien-Chang Huang
- Department of Chemical Engineering, Kansas State University, 1005 Durland Hall, Manhattan, Kansas 66506-5102
| | - Keith L. Hohn
- Department of Chemical Engineering, Kansas State University, 1005 Durland Hall, Manhattan, Kansas 66506-5102
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37
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Blakey I, Thurecht KJ, Whittaker AK. High-pressure real-time 129Xe NMR: monitoring of surfactant conformation during the self-assembly of reverse micelles in supercritical carbon dioxide. Chem Commun (Camb) 2010; 46:2850-2. [DOI: 10.1039/b927029a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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38
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Glezakou VA, Rousseau R, Dang LX, McGrail BP. Structure, dynamics and vibrational spectrum of supercritical CO2/H2O mixtures from ab initio molecular dynamics as a function of water cluster formation. Phys Chem Chem Phys 2010; 12:8759-71. [DOI: 10.1039/b923306g] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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39
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Schwan M, Kramer LGA, Sottmann T, Strey R. Phase behaviour of propane- and scCO2-microemulsions and their prominent role for the recently proposed foaming procedure POSME (Principle of Supercritical Microemulsion Expansion). Phys Chem Chem Phys 2010; 12:6247-52. [DOI: 10.1039/b909764c] [Citation(s) in RCA: 32] [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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40
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Nikitin LN, Gallyamov MO, Said-Galiev EE, Khokhlov AR, Buznik VM. Supercritical carbon dioxide: A reactive medium for chemical processes involving fluoropolymers. RUSS J GEN CHEM+ 2009. [DOI: 10.1134/s1070363209030396] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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41
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Zhang J, Li W, Zhao Y, Han B, Yang G. Enlargement of cationic alkyl polyglycoside micelles by ionic liquid. Colloids Surf A Physicochem Eng Asp 2009. [DOI: 10.1016/j.colsurfa.2008.11.026] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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42
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Li W, Zhang J, Cheng S, Han B, Zhang C, Feng X, Zhao Y. Enhanced stabilization of vesicles by compressed CO2. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2009; 25:196-202. [PMID: 19049396 DOI: 10.1021/la8031545] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
In this work, we studied the effect of compressed CO2 on the stability of vesicles formed in a dodecyltrimethylammonium bromide (DTAB)/sodium dodecyl sulfate (SDS) mixed surfactant system by combination of phase behavior and turbidity study, and UV-vis and fluorescence techniques. It was discovered that compressed CO2 could enhance the stability of vesicles significantly. This new and effective method to stabilize vesicles has some unique advantages over conventional methods. For example, the size and stability of the vesicles can be easily controlled by CO2 pressure; the method is greener because CO2 is a green reagent and it can be released completely after depressurization, which simplifies postseparation processes in applications. The main reason for CO2 to stabilize the vesicles is that CO2 molecules can insert into the hydrophobic bilayer region to enhance the rigidity of the vesicle film and reduce the size of the vesicles, which is different from that of conventional cosolvents (e.g., alcohols) used to stabilize vesicles. On the basis of this discovery, we developed a method to prepare hollow silica spheres using tetraethoxysilane as the precursor and CO2-stabilized vesicles as the template, in which CO2 acts as both the stabilizer of the vesicular template and the catalyst for the hydrolysis reaction of the precursor, and other cosolvents and catalysts are not required. Besides, the size of the silica hollow spheres prepared can be controlled by the pressure of CO2.
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Affiliation(s)
- Wei Li
- Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China
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43
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Sagisaka M, Hino M, Oasa J, Yamamoto M, Yoda S, Takebayashi Y, Furuya T, Yoshizawa A, Ochi K, Otake K. Characterization of Water/Supercritical CO2 Microemulsion by UV-visible Spectroscopy and Dynamic Light Scattering. J Oleo Sci 2009; 58:75-83. [DOI: 10.5650/jos.58.75] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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44
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Bhargava BL, Krishna AC, Balasubramanian S. Molecular dynamics simulation studies of CO2- [bmim][PF6] solutions: Effect of CO2concentration. AIChE J 2008. [DOI: 10.1002/aic.11596] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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45
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Extraction of magnesium and copper using a surfactant and water in supercritical carbon dioxide. J Supercrit Fluids 2008. [DOI: 10.1016/j.supflu.2008.06.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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46
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Sagisaka M, Koike D, Mashimo Y, Yoda S, Takebayashi Y, Furuya T, Yoshizawa A, Sakai H, Abe M, Otake K. Water/supercritical CO2 microemulsions with mixed surfactant systems. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2008; 24:10116-10122. [PMID: 18715020 DOI: 10.1021/la8014145] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Phase behavior was investigated for water/supercritical CO 2 (W/scCO2) microemulsions stabilized with sodium bis(1H,1H,2H,2H-heptadecafluorodecyl)-2-sulfosuccinate (8FS(EO) 2) mixed with various guest surfactants. Only for the mixtures with fluorocarbon-hydrocarbon hybrid anionic surfactants (FC6-HC n), the maximum water-to-surfactant molar ratio (W0(c)) was larger than that estimated from linear interpolation of the W0(c) values for pure 8FS(EO) 2 and pure guest surfactant. Fourier transform infrared (FT-IR) measurement for the microemulsion revealed that the mixing of 8FS(EO) 2 with FC6-HC n can prevent a phase transition from the microemulsion to the liquid crystal even in the presence of excess water. It was also found from the measurement of water/scCO 2 interfacial tension that the area occupied per surfactant molecule was markedly increased by the mixing with FC6-HC n. The loose molecular packing, probably due to a microsegregation of 8FS(EO) 2 and FC6-HC n, is consistent with the enhanced stability of the microemulsion upon surfactant mixing.
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Affiliation(s)
- Masanobu Sagisaka
- Department of Frontier Materials Chemistry, Graduate School of Science and Technology, Hirosaki University, 3 Bunkyo-cho, Hirosaki, Aomori, Japan.
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47
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Zhao Y, Zhang J, Han B, Zhang C, Li W, Feng X, Hou M, Yang G. Effect of compressed CO2 on the properties of lecithin reverse micelles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2008; 24:9328-9333. [PMID: 18646884 DOI: 10.1021/la801427b] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Lecithin is a very useful biosurfactant. In this work, the effects of compressed CO 2 on the critical micelle concentration (cmc) of lecithin in cyclohexane and solubilization of water, lysozyme, and PdCl 2 in the lecithin reverse micelles were studied. The micropolarity and pH value of the polar cores of the reverse micelles with and without CO 2 were also investigated. It was found that CO 2 could reduce the cmc of the micellar solution and enhance the capacity of the reverse micelles to solubilize water, the biomolecule, and the inorganic salt significantly. Moreover, the water pools could not be formed in the reverse micelles in the absence of CO 2 because of the limited amount of water solubilized. However, the water pools could be formed in the presence of CO 2 because large amounts of water could be solubilized. All of these provide more opportunity for effective utilization of this green surfactant. The possible mechanism for tuning the properties of the reverse micelles by CO 2 is discussed.
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Affiliation(s)
- Yueju Zhao
- Center for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China
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Tortosa Estorach C, Orejón A, Ruiz N, Masdeu‐Bultó AM, Laurenczy G. Hydrocarboxylation of Terminal Alkenes in Supercritical Carbon Dioxide. Eur J Inorg Chem 2008. [DOI: 10.1002/ejic.200800282] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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49
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Takebayashi Y, Mashimo Y, Koike D, Yoda S, Furuya T, Sagisaka M, Otake K, Sakai H, Abe M. Fourier Transform Infrared Spectroscopic Study of Water-in-Supercritical CO2 Microemulsion as a Function of Water Content. J Phys Chem B 2008; 112:8943-9. [DOI: 10.1021/jp802578y] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yoshihiro Takebayashi
- Nanotechnology Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Higashi 1-1-1, Tsukuba, Ibaraki 305-8565, Japan, Graduate School of Science and Technology, Tokyo University of Science, Yamazaki 2641, Noda, Chiba 278-8510, Japan, Faculty of Science and Technology, Hirosaki University, Bunkyo-cho 3, Hirosaki, Aomori 036-8561, Japan, and Faculty of Engineering, Tokyo University of Science, Kagurazaka 1-3, Shinjyuku-ku, Tokyo 162-8601, Japan
| | - Yasuaki Mashimo
- Nanotechnology Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Higashi 1-1-1, Tsukuba, Ibaraki 305-8565, Japan, Graduate School of Science and Technology, Tokyo University of Science, Yamazaki 2641, Noda, Chiba 278-8510, Japan, Faculty of Science and Technology, Hirosaki University, Bunkyo-cho 3, Hirosaki, Aomori 036-8561, Japan, and Faculty of Engineering, Tokyo University of Science, Kagurazaka 1-3, Shinjyuku-ku, Tokyo 162-8601, Japan
| | - Daisuke Koike
- Nanotechnology Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Higashi 1-1-1, Tsukuba, Ibaraki 305-8565, Japan, Graduate School of Science and Technology, Tokyo University of Science, Yamazaki 2641, Noda, Chiba 278-8510, Japan, Faculty of Science and Technology, Hirosaki University, Bunkyo-cho 3, Hirosaki, Aomori 036-8561, Japan, and Faculty of Engineering, Tokyo University of Science, Kagurazaka 1-3, Shinjyuku-ku, Tokyo 162-8601, Japan
| | - Satoshi Yoda
- Nanotechnology Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Higashi 1-1-1, Tsukuba, Ibaraki 305-8565, Japan, Graduate School of Science and Technology, Tokyo University of Science, Yamazaki 2641, Noda, Chiba 278-8510, Japan, Faculty of Science and Technology, Hirosaki University, Bunkyo-cho 3, Hirosaki, Aomori 036-8561, Japan, and Faculty of Engineering, Tokyo University of Science, Kagurazaka 1-3, Shinjyuku-ku, Tokyo 162-8601, Japan
| | - Takeshi Furuya
- Nanotechnology Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Higashi 1-1-1, Tsukuba, Ibaraki 305-8565, Japan, Graduate School of Science and Technology, Tokyo University of Science, Yamazaki 2641, Noda, Chiba 278-8510, Japan, Faculty of Science and Technology, Hirosaki University, Bunkyo-cho 3, Hirosaki, Aomori 036-8561, Japan, and Faculty of Engineering, Tokyo University of Science, Kagurazaka 1-3, Shinjyuku-ku, Tokyo 162-8601, Japan
| | - Masanobu Sagisaka
- Nanotechnology Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Higashi 1-1-1, Tsukuba, Ibaraki 305-8565, Japan, Graduate School of Science and Technology, Tokyo University of Science, Yamazaki 2641, Noda, Chiba 278-8510, Japan, Faculty of Science and Technology, Hirosaki University, Bunkyo-cho 3, Hirosaki, Aomori 036-8561, Japan, and Faculty of Engineering, Tokyo University of Science, Kagurazaka 1-3, Shinjyuku-ku, Tokyo 162-8601, Japan
| | - Katsuto Otake
- Nanotechnology Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Higashi 1-1-1, Tsukuba, Ibaraki 305-8565, Japan, Graduate School of Science and Technology, Tokyo University of Science, Yamazaki 2641, Noda, Chiba 278-8510, Japan, Faculty of Science and Technology, Hirosaki University, Bunkyo-cho 3, Hirosaki, Aomori 036-8561, Japan, and Faculty of Engineering, Tokyo University of Science, Kagurazaka 1-3, Shinjyuku-ku, Tokyo 162-8601, Japan
| | - Hideki Sakai
- Nanotechnology Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Higashi 1-1-1, Tsukuba, Ibaraki 305-8565, Japan, Graduate School of Science and Technology, Tokyo University of Science, Yamazaki 2641, Noda, Chiba 278-8510, Japan, Faculty of Science and Technology, Hirosaki University, Bunkyo-cho 3, Hirosaki, Aomori 036-8561, Japan, and Faculty of Engineering, Tokyo University of Science, Kagurazaka 1-3, Shinjyuku-ku, Tokyo 162-8601, Japan
| | - Masahiko Abe
- Nanotechnology Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Higashi 1-1-1, Tsukuba, Ibaraki 305-8565, Japan, Graduate School of Science and Technology, Tokyo University of Science, Yamazaki 2641, Noda, Chiba 278-8510, Japan, Faculty of Science and Technology, Hirosaki University, Bunkyo-cho 3, Hirosaki, Aomori 036-8561, Japan, and Faculty of Engineering, Tokyo University of Science, Kagurazaka 1-3, Shinjyuku-ku, Tokyo 162-8601, Japan
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Nano-composition of riboflavin-nafion functional film and its application in biosensing. J Biosci 2008; 33:279-87. [DOI: 10.1007/s12038-008-0045-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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