151
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Seo M, Kim S, Oh J, Kim SJ, Hillmyer MA. Hierarchically Porous Polymers from Hyper-cross-linked Block Polymer Precursors. J Am Chem Soc 2015; 137:600-3. [DOI: 10.1021/ja511581w] [Citation(s) in RCA: 135] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Myungeun Seo
- Graduate
School of Nanoscience and Technology, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 305-701, Korea
| | - Soobin Kim
- Graduate
School of Nanoscience and Technology, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 305-701, Korea
| | - Jaehoon Oh
- Graduate
School of Nanoscience and Technology, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 305-701, Korea
| | - Sun-Jung Kim
- Mirae Scientific Instruments Inc., Gwangju 500-470, Korea
| | - Marc A. Hillmyer
- Department
of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
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152
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Sim JB, Mayavan S, Choi SM. Scalable thermal synthesis of a highly crumpled, highly exfoliated and N-doped graphene/Mn-oxide nanoparticle hybrid for high-performance supercapacitors. RSC Adv 2015. [DOI: 10.1039/c5ra04163e] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Schematic illustration for the synthesis of the highly crumpled, highly exfoliated, and N-doped graphene/Mn-oxide nanoparticle hybrid and its SEM image.
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Affiliation(s)
- Jun-Bo Sim
- Department of Nuclear and Quantum Engineering
- Korea Advanced Institute of Science and Technology
- Daejeon
- Republic of Korea
| | - Sundar Mayavan
- Department of Nuclear and Quantum Engineering
- Korea Advanced Institute of Science and Technology
- Daejeon
- Republic of Korea
- Division of Corrosion & Materials Protection
| | - Sung-Min Choi
- Department of Nuclear and Quantum Engineering
- Korea Advanced Institute of Science and Technology
- Daejeon
- Republic of Korea
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153
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Walker CN, Bryson KC, Hayward RC, Tew GN. Wide bicontinuous compositional windows from co-networks made with telechelic macromonomers. ACS NANO 2014; 8:12376-85. [PMID: 25415537 DOI: 10.1021/nn505026a] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Phase-separated and self-assembled co-network materials offer a simple route to bicontinuous morphologies, which are expected to be highly beneficial for applications such as ion, charge, and oxygen transport. Despite these potential advantages, the programmed creation of co-network structures has not been achieved, largely due to the lack of well-controlled chemistries for their preparation. Here, a thiol-ene end-linking platform enables the systematic investigation of phase-separated poly(ethylene glycol) (PEG) and polystyrene (PS) networks in terms of the molecular weight and relative volume fractions of precursor polymers. The ion conductivity and storage modulus of these materials serve as probes to demonstrate that both phases percolate over a wide range of compositions, spanning PEG volume fractions from ∼0.3-0.65. Small angle X-ray scattering (SAXS) shows that microphase separation of these co-networks yields disordered structures with d-spacings that follow d∼Mn0.5, for 4.8 kg/mol<Mn<37 kg/mol, where Mn is the molecular weight of the precursor polymers at the same ratio of PEG to PS. Over this range of molecular weights and corresponding d-spacings (22-55 nm), the ion conductivity (10(-4.7) S/cm at 60 °C), thermal properties (two glass transitions, low PEG crystallinity), and mechanical properties (storage modulus ≈90 MPa at 30 °C) remained similar. These findings demonstrate that this approach to thiol-ene co-networks is a versatile platform to create bicontinuous morphologies.
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Affiliation(s)
- Catherine N Walker
- Department of Polymer Science & Engineering and ‡Department of Veterinary and Animal Science, University of Massachusetts , Amherst, Massachusetts 01003, United States
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154
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Jalal TA, Charry Prada ID, Tayouo R, Giannelis EP, Nunes SP. Reactive phase inversion for manufacture of asymmetric poly (ether imide sulfone) membranes. REACT FUNCT POLYM 2014. [DOI: 10.1016/j.reactfunctpolym.2014.09.018] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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155
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Zhang Y, Sargent JL, Boudouris BW, Phillip WA. Nanoporous membranes generated from self-assembled block polymer precursors:Quo Vadis? J Appl Polym Sci 2014. [DOI: 10.1002/app.41683] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Yizhou Zhang
- Department of Chemical and Biomolecular Engineering; University of Notre Dame; Notre Dame Indiana 46556
| | - Jessica L. Sargent
- School of Chemical Engineering, Purdue University; West Lafayette Indiana 47907
| | - Bryan W. Boudouris
- School of Chemical Engineering, Purdue University; West Lafayette Indiana 47907
| | - William A. Phillip
- Department of Chemical and Biomolecular Engineering; University of Notre Dame; Notre Dame Indiana 46556
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156
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Seo M, Moll D, Silvis C, Roy A, Querelle S, Hillmyer MA. Interfacial Polymerization of Reactive Block Polymers for the Preparation of Composite Ultrafiltration Membranes. Ind Eng Chem Res 2014. [DOI: 10.1021/ie5032259] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Myungeun Seo
- Department
of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - David Moll
- Dow Water and
Process Solutions, Edina, Minnesota 55439, United States
| | - Craig Silvis
- Dow Water and
Process Solutions, Edina, Minnesota 55439, United States
| | - Abhishek Roy
- Dow Water and
Process Solutions, Edina, Minnesota 55439, United States
| | - Sarah Querelle
- Dow Water and
Process Solutions, Edina, Minnesota 55439, United States
| | - Marc A. Hillmyer
- Department
of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
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157
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Wang Y, Gao P, Bao D, Wang L, Chen Y, Zhou X, Yang P, Sun S, Zhang M. One Pot, Two Phases: Individual Orthorhombic and Face-Centered Cubic ZnSnO3 Obtained Synchronously in One Solution. Inorg Chem 2014; 53:12289-96. [DOI: 10.1021/ic5014126] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ying Wang
- College of Materials Science and Chemical Engineering and ‡College of Science, Harbin Engineering University, Harbin, Heilongjiang 150001, P. R. China
| | - Peng Gao
- College of Materials Science and Chemical Engineering and ‡College of Science, Harbin Engineering University, Harbin, Heilongjiang 150001, P. R. China
| | - Di Bao
- College of Materials Science and Chemical Engineering and ‡College of Science, Harbin Engineering University, Harbin, Heilongjiang 150001, P. R. China
| | - Longqiang Wang
- College of Materials Science and Chemical Engineering and ‡College of Science, Harbin Engineering University, Harbin, Heilongjiang 150001, P. R. China
| | - Yujin Chen
- College of Materials Science and Chemical Engineering and ‡College of Science, Harbin Engineering University, Harbin, Heilongjiang 150001, P. R. China
| | - Xiaoming Zhou
- College of Materials Science and Chemical Engineering and ‡College of Science, Harbin Engineering University, Harbin, Heilongjiang 150001, P. R. China
| | - Piaoping Yang
- College of Materials Science and Chemical Engineering and ‡College of Science, Harbin Engineering University, Harbin, Heilongjiang 150001, P. R. China
| | - Shuchao Sun
- College of Materials Science and Chemical Engineering and ‡College of Science, Harbin Engineering University, Harbin, Heilongjiang 150001, P. R. China
| | - Milin Zhang
- College of Materials Science and Chemical Engineering and ‡College of Science, Harbin Engineering University, Harbin, Heilongjiang 150001, P. R. China
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158
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Betthausen E, Dulle M, Hanske C, Müller M, Fery A, Förster S, Schacher FH, Müller AHE. Nanoporous Sheets and Cylinders via Bulk Templating of Triblock Terpolymer/Homopolymer Blends. Macromolecules 2014. [DOI: 10.1021/ma501003z] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
| | | | | | | | | | | | - Felix H. Schacher
- Institut
für Organische und Makromolekulare Chemie and Jena Center for
Soft Matter, Friedrich-Schiller-Universität Jena, 07743 Jena, Germany
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159
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Qiao Y, Ferebee R, Lee B, Mitra I, Lynd NA, Hayat J, Stein GE, Bockstaller MR, Tang C. Symmetric Poly(ethylene oxide-b-styrene-b-isoprene) Triblock Copolymers: Synthesis, Characterization, and Self-Assembly in Bulk and Thin Film. Macromolecules 2014. [DOI: 10.1021/ma501057m] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Yali Qiao
- Department
of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, United States
| | - Rachel Ferebee
- Department
of Materials Science and Engineering, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States
| | - Bongjoon Lee
- Department
of Materials Science and Engineering, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States
| | - Indranil Mitra
- Department of Chemical & Biomolecular Engineering, University of Houston, Houston, Texas 77204, United States
| | - Nathaniel A. Lynd
- Materials
Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Jeffery Hayat
- Department
of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, United States
| | - Gila E. Stein
- Department of Chemical & Biomolecular Engineering, University of Houston, Houston, Texas 77204, United States
| | - Michael R. Bockstaller
- Department
of Materials Science and Engineering, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States
| | - Chuanbing Tang
- Department
of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, United States
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160
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Krishnan MR, Samitsu S, Fujii Y, Ichinose I. Hydrophilic polymer nanofibre networks for rapid removal of aromatic compounds from water. Chem Commun (Camb) 2014; 50:9393-6. [DOI: 10.1039/c4cc01786b] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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161
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Hou X, Li Q, Cao A. Solvent annealing-induced microphase-separation of polystyrene-b-polylactide block copolymer aimed at preparation of ordered nanoparticles/block copolymer hybrid thin film. JOURNAL OF POLYMER RESEARCH 2014. [DOI: 10.1007/s10965-014-0491-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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162
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Hou X, Li Q, Cao A. Synthesis and microphase separation of polystyrene-b
-polylactide block copolymers aimed at preparation of ordered nanoparticle/block copolymer hybrid materials. POLYM INT 2014. [DOI: 10.1002/pi.4746] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Xiaodong Hou
- Laboratory for Polymer Materials; Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences; 354 Fenglin Road Shanghai 200032 China
| | - Qiaobo Li
- Laboratory for Polymer Materials; Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences; 354 Fenglin Road Shanghai 200032 China
| | - Amin Cao
- Laboratory for Polymer Materials; Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences; 354 Fenglin Road Shanghai 200032 China
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163
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La Y, Park C, Shin TJ, Joo SH, Kang S, Kim KT. Colloidal inverse bicontinuous cubic membranes of block copolymers with tunable surface functional groups. Nat Chem 2014; 6:534-41. [DOI: 10.1038/nchem.1946] [Citation(s) in RCA: 108] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2013] [Accepted: 04/04/2014] [Indexed: 01/22/2023]
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164
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Samitsu S, Zhang R, Peng X, Krishnan MR, Fujii Y, Ichinose I. Flash freezing route to mesoporous polymer nanofibre networks. Nat Commun 2014; 4:2653. [PMID: 24145702 PMCID: PMC3826646 DOI: 10.1038/ncomms3653] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2013] [Accepted: 09/20/2013] [Indexed: 11/22/2022] Open
Abstract
There are increasing requirements worldwide for advanced separation materials with applications in environmental protection processes. Various mesoporous polymeric materials have been developed and they are considered as potential candidates. It is still challenging, however, to develop economically viable and durable separation materials from low-cost, mass-produced materials. Here we report the fabrication of a nanofibrous network structure from common polymers, based on a microphase separation technique from frozen polymer solutions. The resulting polymer nanofibre networks exhibit large free surface areas, exceeding 300 m2 g−1, as well as small pore radii as low as 1.9 nm. These mesoporous polymer materials are able to rapidly adsorb and desorb a large amount of carbon dioxide and are also capable of condensing organic vapours. Furthermore, the nanofibres made of engineering plastics with high glass transition temperatures over 200 °C exhibit surprisingly high, temperature-dependent adsorption of organic solvents from aqueous solution. Mesoporous polymeric materials are good candidates for advanced separation materials, though their low-cost production remains challenging. Here, the authors report a microphase separation technique for the fabrication of nanoporous networks from frozen solutions of common polymers.
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Affiliation(s)
- Sadaki Samitsu
- Polymer Materials Unit, National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
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165
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Lu W, Qian C, Bi L, Tao L, Ge J, Dong J, Qian W. Biomolecule-based formaldehyde resin microspheres loaded with Au nanoparticles: A novel immunoassay for detection of tumor markers in human serum. Biosens Bioelectron 2014; 53:346-54. [DOI: 10.1016/j.bios.2013.10.007] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2013] [Revised: 10/04/2013] [Accepted: 10/07/2013] [Indexed: 11/25/2022]
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166
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Schulze MW, McIntosh LD, Hillmyer MA, Lodge TP. High-modulus, high-conductivity nanostructured polymer electrolyte membranes via polymerization-induced phase separation. NANO LETTERS 2014; 14:122-6. [PMID: 24328570 DOI: 10.1021/nl4034818] [Citation(s) in RCA: 177] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
The primary challenge in solid-state polymer electrolyte membranes (PEMs) is to enhance properties, such as modulus, toughness, and high temperature stability, without sacrificing ionic conductivity. We report a remarkably facile one-pot synthetic strategy based on polymerization-induced phase separation (PIPS) to generate nanostructured PEMs that exhibit an unprecedented combination of high modulus and ionic conductivity. Simple heating of a poly(ethylene oxide) macromolecular chain transfer agent dissolved in a mixture of ionic liquid, styrene and divinylbenzene, leads to a bicontinuous PEM comprising interpenetrating nanodomains of highly cross-linked polystyrene and poly(ethylene oxide)/ionic liquid. Ionic conductivities higher than the 1 mS/cm benchmark were achieved in samples with an elastic modulus approaching 1 GPa at room temperature. Crucially, these samples are robust solids above 100 °C, where the conductivity is significantly higher. This strategy holds tremendous potential to advance lithium-ion battery technology by enabling the use of lithium metal anodes or to serve as membranes in high-temperature fuel cells.
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Affiliation(s)
- Morgan W Schulze
- Department of Chemical Engineering and Materials Science and ‡Department of Chemistry, University of Minnesota , Minneapolis, Minnesota 55455-0431, United States
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167
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Leroux F, Montembault V, Pascual S, Guerin W, Guillaume SM, Fontaine L. Synthesis and polymerization of cyclobutenyl-functionalized polylactide and polycaprolactone: a consecutive ROP/ROMP route towards poly(1,4-butadiene)-g-polyesters. Polym Chem 2014. [DOI: 10.1039/c3py01611k] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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168
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Zhang G, Liu G, Shi Z, Qiao G. Dynamics of spinodal decomposition coupled with chemical reaction in thermosetting phenol-formaldehyde resin-based solutions and its application in monolithic porous materials. RSC Adv 2014. [DOI: 10.1039/c3ra46490c] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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169
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Nelson KM, Qiao ZA, Mahurin SM, Mayes RT, Bridges CA, Dai S. A non-micellar synthesis of mesoporous carbon via spinodal decomposition. RSC Adv 2014. [DOI: 10.1039/c4ra03558e] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Mesoporous carbons were prepared via spinodal decomposition of non-amphiphilic linear polyethylene glycol with phloroglucinol–formaldehyde resin under refluxing acidic ethanol conditions.
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Affiliation(s)
| | - Zhen-An Qiao
- Chemical Sciences Division
- Oak Ridge National Laboratory
- Oak Ridge, USA
| | | | - Richard T. Mayes
- Chemical Sciences Division
- Oak Ridge National Laboratory
- Oak Ridge, USA
| | - Craig A. Bridges
- Chemical Sciences Division
- Oak Ridge National Laboratory
- Oak Ridge, USA
| | - Sheng Dai
- Department of Chemistry
- University of Tennessee
- Knoxville, USA
- Chemical Sciences Division
- Oak Ridge National Laboratory
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170
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Zheng M, Liu Y, Xiao Y, Dong H, Feng H, Zhang H, Lei B. Simple additive-free method to manganese monoxide mesocrystals and their template application for the synthesis of carbon and graphitic hollow octahedrons. ACS APPLIED MATERIALS & INTERFACES 2013; 5:12561-12570. [PMID: 24274735 DOI: 10.1021/am403875p] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Mesocrystals are of great importance owing to their novel hierarchical microstructures and potential applications. In the present work, a simple additive-free method has been developed for the controllable synthesis of manganese monoxide (MnO) mesocrystals, in which cheap manganese acetate (Mn(Ac)2) and ethanol were used as raw materials without involving any other expensive additives such as surfactants, polyelectrolyte, or polymers. The particle size of the resulting MnO mesocrystals is tunable in the range 400-1500 nm by simply altering the concentration of Mn(Ac)2 in ethanol. The percentage yield of the octahedral MnO mesocrystals is about 38 wt % with respect to the starting Mn(Ac)2. The selective adsorption of oligomers, which was resulted from the polymerization of ethanol, acted as an important role for the mesocrystal formation. A mechanism involving the oriented aggregation of MnO nanoparticle subunits and the subsequent ripening process was proposed. Moreover, for the first time, the as-synthesized MnO mesocrystals were employed as a novel template to fabricate functional materials with an octahedral morphology including MnO@C core/shells, carbon, and graphitic hollow octahedrons. This method shows the importance of mesocrystals not only for the field of material research but also for the application in functional materials synthesis.
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Affiliation(s)
- Mingtao Zheng
- Department of Applied Chemistry, College of Science, South China Agricultural University , Guangzhou 510642, China
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171
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McKenzie BE, de Visser JF, Friedrich H, Wirix MJM, Bomans PHH, de With G, Holder SJ, Sommerdijk NAJM. Bicontinuous Nanospheres from Simple Amorphous Amphiphilic Diblock Copolymers. Macromolecules 2013. [DOI: 10.1021/ma4019729] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Beulah E. McKenzie
- Laboratory
of Materials and Interface Chemistry and Soft Matter Cryo-TEM Research
Unit, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Joël F. de Visser
- Laboratory
of Materials and Interface Chemistry and Soft Matter Cryo-TEM Research
Unit, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Heiner Friedrich
- Laboratory
of Materials and Interface Chemistry and Soft Matter Cryo-TEM Research
Unit, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Maarten J. M. Wirix
- Laboratory
of Materials and Interface Chemistry and Soft Matter Cryo-TEM Research
Unit, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Paul H. H. Bomans
- Laboratory
of Materials and Interface Chemistry and Soft Matter Cryo-TEM Research
Unit, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Gijsbertus de With
- Laboratory
of Materials and Interface Chemistry and Soft Matter Cryo-TEM Research
Unit, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Simon J. Holder
- Functional
Materials Group, School of Physical Sciences, University of Kent, Canterbury, Kent, CT2 7NH, U.K
| | - Nico A. J. M. Sommerdijk
- Laboratory
of Materials and Interface Chemistry and Soft Matter Cryo-TEM Research
Unit, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
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172
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Schroeder WF, Aranguren MI, Eliçabe GE, Borrajo J. Free-radical polymerization induced macrophase separation in poly(methyl methacrylate)/dimethacrylate blends: Experiment and modeling. Eur Polym J 2013. [DOI: 10.1016/j.eurpolymj.2013.08.027] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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173
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Kim JC, Seo M, Hillmyer MA, Francis LF. Magnetic microrheology of block copolymer solutions. ACS APPLIED MATERIALS & INTERFACES 2013; 5:11877-11883. [PMID: 24228981 DOI: 10.1021/am403569f] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The viscosity of poly(styrene)-b-poly(lactide) [PS-b-PLA] solutions in a neutral solvent was characterized by magnetic microrheology. The effect of polymer concentration on the viscosity of the block polymer solutions was compared with that of the PS and PLA homopolymers in the same solvent. The viscosity of PS-b-PLA solution, unlike the homopolymer solutions, showed a steep increase over a narrow concentration range. The steep rise was concomitant with microphase separation into an ordered cylindrical microstructure as determined by small-angle X-ray scattering. Hence microrheology proved effective as a means of characterizing the order-disorder transition concentration. During an in situ drying experiment, changes in local viscosity through the depth of a block copolymer solution were characterized as a function of drying time. Early in the drying process, the viscosity rose steadily and was uniform through the depth, a result consistent with steadily increasing and uniform polymer concentration. However, later in the drying process as the overall polymer concentration approached that required for microphase separation, the viscosity of the polymer solution near the free surface became an order of magnitude higher than that near the bottom of the container. The zone of high viscosity moved downward as drying proceeded, consistent with a microphase separation front.
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Affiliation(s)
- Jin Chul Kim
- Department of Chemistry, University of Minnesota , Minneapolis, Minnesota 55455-0431, United States
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174
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Zaheer M, Hermannsdörfer J, Kretschmer WP, Motz G, Kempe R. Robust Heterogeneous Nickel Catalysts with Tailored Porosity for the Selective Hydrogenolysis of Aryl Ethers. ChemCatChem 2013. [DOI: 10.1002/cctc.201300763] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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175
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Abstract
Mesoporous polymer nanoparticles containing pores with sizes ranging from 2 to 50 nm are attractive for wide applications, such as catalysis, drug delivery, and separations. On the basis of nanometer-sized phase separation and cleavage reaction in the micellar cores, polymeric micelles with mesoporous cores are prepared in this research. A triblock terpolymer, consisting of one hydrophilic block and two mutually incompatible hydrophobic blocks covalently connected by a redox-responsive disulfide linkage, self-assembles into multicompartment micelles, a type of micelle with subdivided hydrophobic cores, in aqueous solution. Due to the incompatibility, the two hydrophobic blocks have nanometer-sized phase separation in the micellar cores, one in the discontinuous phase and the other in the continuous phase. Upon cleavage of the disulfide linkage, the discontinuous phase is dissolved in a selective solvent, and micelles with mesoporous cores are obtained. The average pore size is around 3 nm. Functionalization of the mesopores with functional compounds and inorganic nanoparticles renders these micelles suited for wide applications.
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Affiliation(s)
- Yue Zhang
- Department
of Chemistry and ‡Institute of Polymer Chemistry, Key
Laboratory of Functional Polymer Materials, Ministry of Education, Nankai University, Tianjin 300071, China
| | - Chuanzhuang Zhao
- Department
of Chemistry and ‡Institute of Polymer Chemistry, Key
Laboratory of Functional Polymer Materials, Ministry of Education, Nankai University, Tianjin 300071, China
| | - Li Liu
- Department
of Chemistry and ‡Institute of Polymer Chemistry, Key
Laboratory of Functional Polymer Materials, Ministry of Education, Nankai University, Tianjin 300071, China
| | - Hanying Zhao
- Department
of Chemistry and ‡Institute of Polymer Chemistry, Key
Laboratory of Functional Polymer Materials, Ministry of Education, Nankai University, Tianjin 300071, China
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176
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Tao R, Anthamatten M. Porous Polymers by Controlling Phase Separation during Vapor Deposition Polymerization. Macromol Rapid Commun 2013; 34:1755-60. [DOI: 10.1002/marc.201300566] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2013] [Revised: 09/06/2013] [Indexed: 11/08/2022]
Affiliation(s)
- Ran Tao
- Department of Chemical Engineering; University of Rochester; 206 Gavett Hall Rochester, New York 14627 United States
| | - Mitchell Anthamatten
- Department of Chemical Engineering; University of Rochester; 206 Gavett Hall Rochester, New York 14627 United States
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177
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Zhang G, Qiao G. Polymerization-induced spinodal decomposition of ethylene glycol∕phenolic resin solutions under electric fields. J Chem Phys 2013; 139:134903. [PMID: 24116581 DOI: 10.1063/1.4822295] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Temporal evolution of polymerization-induced spinodal decomposition (PISD) under electric fields was investigated numerically in ethylene glycol∕phenolic resin solutions with different initial composition. A model composed of the nonlinear Cahn-Hilliard-Cook equation for spinodal decomposition and a rate equation for curing reaction was utilized to describe the PISD phenomenon. As initial composition varied, deformed droplet-like and aligned bi-continuous structures were observed in the presence of an electric field. Moreover, the anisotropic parameter (D), determined from the 2D-FFT power spectrum, was employed to quantitatively characterize the degree of morphology anisotropy. The value of D increased quickly in the early stage and then decreased in the intermediate stage of spinodal decomposition, which was attributed to the resistance of coarsening process to morphology deformation and the decline of electric stress caused by polymerization reaction. The results can also provide a guidance on how to control the morphology of monolithic porous polymer and carbon materials with anisotropic structures.
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Affiliation(s)
- Gang Zhang
- State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an 710049, China
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178
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Tian B, Shankarappa S, Chang HH, Tong R, Kohane DS. Biodegradable mesostructured polymer membranes. NANO LETTERS 2013; 13:4410-4415. [PMID: 23964960 PMCID: PMC3799971 DOI: 10.1021/nl402251x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The extracellular matrix (ECM) has a quasi-ordered reticular mesostructure with feature sizes on the order of tenths of to a few hundred nanometers. Approaches to preparing biodegradable synthetic scaffolds for engineered tissues that have the critical mesostructure to mimic ECM are few. Here we present a simple and general solvent evaporation-induced self-assembly (EISA) approach to preparing concentrically reticular mesostructured polyol-polyester membranes. The mesostructures were formed by a novel self-assembly process without covalent or electrostatic interactions, which yielded feature sizes matching those of ECM. The mesostructured materials were nonionic, hydrophilic, and water-permeable and could be shaped into arbitrary geometries such as conformally molded tubular sacs and micropatterned meshes. Importantly, the mesostructured polymers were biodegradable and were used as ultrathin temporary substrates for engineering vascular tissue constructs.
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Affiliation(s)
- Bozhi Tian
- Department of Anesthesiology, Division of Critical Care Medicine, Children's Hospital Boston, Harvard Medical School, Boston, Massachusetts 02115, USA
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - Sahadev Shankarappa
- Department of Anesthesiology, Division of Critical Care Medicine, Children's Hospital Boston, Harvard Medical School, Boston, Massachusetts 02115, USA
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - Homer H. Chang
- Department of Anesthesiology, Division of Critical Care Medicine, Children's Hospital Boston, Harvard Medical School, Boston, Massachusetts 02115, USA
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - Rong Tong
- Department of Anesthesiology, Division of Critical Care Medicine, Children's Hospital Boston, Harvard Medical School, Boston, Massachusetts 02115, USA
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - Daniel S. Kohane
- Department of Anesthesiology, Division of Critical Care Medicine, Children's Hospital Boston, Harvard Medical School, Boston, Massachusetts 02115, USA
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179
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Bertrand A, Hillmyer MA. Nanoporous poly(lactide) by olefin metathesis degradation. J Am Chem Soc 2013; 135:10918-21. [PMID: 23869876 DOI: 10.1021/ja4050532] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We describe an approach to ordered nanoporous poly(lactide) that relies on self-assembly of poly(butadiene)-poly(lactide) (PB-PLA) diblock copolymers followed by selective degradation of PB using olefin metathesis. The block copolymers were obtained by a combination of anionic and ring-opening transesterification polymerizations. The molar mass of each block was tailored to target materials with either a lamellar or cylindrical microphase-separated morphology. Orientation of these nanoscale domains was induced in thin films and monolithic samples through solvent annealing and mechanical deformation, respectively. Selective degradation of PB was achieved by immersing the samples in a solution of Grubbs first-generation catalyst in cyclohexane, a nonsolvent for PLA. Successful elimination of PB was confirmed by size-exclusion chromatography and (1)H NMR spectroscopy. Direct imaging of the resulting nanoporous PLA was obtained by scanning electron microscopy.
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Affiliation(s)
- Arthur Bertrand
- Department of Chemistry, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455-0431, USA
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180
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Seo M, Murphy CJ, Hillmyer MA. One-Step Synthesis of Cross-Linked Block Polymer Precursor to a Nanoporous Thermoset. ACS Macro Lett 2013; 2:617-620. [PMID: 35581793 DOI: 10.1021/mz400192f] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Using a simultaneous block polymerization/in situ cross-linking from a heterofunctional initiator approach, we produced a nanostructured and cross-linked block polymer in a single step from a ternary mixture of monomers and used it as a precursor for a cross-linked nanoporous material. Using 2-(benzylsulfanylthiocarbonylsulfanyl)ethanol as a heterofunctional initiator, simultaneous ring-opening transesterification polymerization of d,l-lactide in the presence of tin 2-ethylhexanoate as a catalyst and reversible addition-fragmentation chain transfer polymerization of styrene at 120 °C produced a polylactide-b-polystyrene (PLA-b-PS) block polymer. Incorporation of divinylbenzene in the polymerization mixture allowed in situ cross-linking during the simultaneous block polymerization to result in the cross-linked block polymer precursor in one step. This material was converted into cross-linked nanoporous polymer by etching PLA in a basic solution.
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Affiliation(s)
- Myungeun Seo
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455,
United States
| | - Christopher J. Murphy
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455,
United States
| | - Marc A. Hillmyer
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455,
United States
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181
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Hou X, Li Q, Cao A. In Situ Aggregates of Enantiomeric Poly(styrene)-block
-Poly(lactide) Diblock Copolymers via Stereocomplexation in a Non-selective Solvent. MACROMOL CHEM PHYS 2013. [DOI: 10.1002/macp.201300216] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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182
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Kim Y, Shin S, Kim T, Lee D, Seok C, Lee M. Switchable Nanoporous Sheets by the Aqueous Self-Assembly of Aromatic Macrobicycles. Angew Chem Int Ed Engl 2013; 52:6426-9. [DOI: 10.1002/anie.201210373] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2012] [Revised: 04/12/2013] [Indexed: 11/07/2022]
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183
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Kim Y, Shin S, Kim T, Lee D, Seok C, Lee M. Switchable Nanoporous Sheets by the Aqueous Self-Assembly of Aromatic Macrobicycles. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201210373] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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184
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Gamys CG, Schumers JM, Mugemana C, Fustin CA, Gohy JF. Pore-Functionalized Nanoporous Materials Derived from Block Copolymers. Macromol Rapid Commun 2013; 34:962-82. [DOI: 10.1002/marc.201300214] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2013] [Revised: 04/18/2013] [Indexed: 11/10/2022]
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185
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Liang Y, Wu D, Fu R. Carbon microfibers with hierarchical porous structure from electrospun fiber-like natural biopolymer. Sci Rep 2013; 3:1119. [PMID: 23350027 PMCID: PMC3553486 DOI: 10.1038/srep01119] [Citation(s) in RCA: 107] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2012] [Accepted: 12/19/2012] [Indexed: 12/22/2022] Open
Abstract
Electrospinning offers a powerful route for building one-dimensional (1D) micro/nanostructures, but a common requirement for toxic or corrosive organic solvents during the preparation of precursor solution has limited their large scale synthesis and broad applications. Here we report a facile and low-cost way to prepare 1D porous carbon microfibers by using an electrospun fiber-like natural product, i.e., silk cocoon, as precursor. We surprisingly found that by utilizing a simple carbonization treatment, the cocoon microfiber can be directly transformed into 1D carbon microfiber of ca. 6 μm diameter with a unique three-dimensional porous network structure composed of interconnected carbon nanoparticles of 10~40 nm diameter. We further showed that the as-prepared carbon product presents superior electrochemical performance as binder-free electrodes of supercapacitors and good adsorption property toward organic vapor.
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Affiliation(s)
- Yeru Liang
- Materials Science Institute, PCFM Lab and DSAPM Lab, School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou 510275, P. R. China
| | - Dingcai Wu
- Materials Science Institute, PCFM Lab and DSAPM Lab, School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou 510275, P. R. China
| | - Ruowen Fu
- Materials Science Institute, PCFM Lab and DSAPM Lab, School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou 510275, P. R. China
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186
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Li GL, Möhwald H, Shchukin DG. Precipitation polymerization for fabrication of complex core–shell hybrid particles and hollow structures. Chem Soc Rev 2013; 42:3628-46. [DOI: 10.1039/c3cs35517a] [Citation(s) in RCA: 238] [Impact Index Per Article: 21.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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187
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188
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Zhou W, Yu W, An Z. RAFT emulsion polymerization of styrene mediated by core cross-linked star (CCS) polymers. Polym Chem 2013. [DOI: 10.1039/c2py21074f] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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189
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PHOTOPOLYMERIZATION KINETICS AND PHOTO-RHEOLOGICAL BEHAVIORS OF VINYL-MONOMERS. ACTA POLYM SIN 2012. [DOI: 10.3724/sp.j.1105.2012.12217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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190
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Cvelbar U, Chen Z, Levchenko I, Sheetz RM, Jasinski JB, Menon M, Sunkara MK, Ostrikov KK. Sub-oxide-to-metallic, uniformly-nanoporous crystalline nanowires by plasma oxidation and electron reduction. Chem Commun (Camb) 2012; 48:11070-2. [PMID: 23019569 DOI: 10.1039/c2cc35151j] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Sub-oxide-to-metallic highly-crystalline nanowires with uniformly distributed nanopores in the 3 nm range have been synthesized by a unique combination of the plasma oxidation, re-deposition and electron-beam reduction. Electron beam exposure-controlled oxide → sub-oxide → metal transition is explained using a non-equilibrium model.
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Affiliation(s)
- Uroš Cvelbar
- Jozef Stefan Institute, Jamova cesta 39, Ljubljana SI 1000, Slovenia.
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