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Xu H, Xiao H, Ellison CJ, Mahanthappa MK. Flexible Nanoporous Materials by Matrix Removal from Cylinder-Forming Diblock Copolymers. NANO LETTERS 2021; 21:7587-7594. [PMID: 34460249 DOI: 10.1021/acs.nanolett.1c02097] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
We describe a straightforward self-assembly route to nanoporous materials derived from a hexagonally-packed cylinder (HEX) morphology of a polyisoprene-block-polylactide (PI-b-PLA) diblock copolymer, by thermal cross-linking of the minority PI domains followed by selective chemical etching of the PLA matrix. The resulting mechanically stable and porous samples defy the expectation that the remaining cylinders cannot yield a robust, integrated material upon matrix removal. Scanning electron microscopy imaging reveals that this unexpected structural integrity stems from the interconnected nanofibrils therein, reflecting topological defects at the grain boundaries of the parent polydomain HEX nanostructure. Hydrodynamic radius-dependent poly(ethylene oxide) (Mn = 0.4-35 kg/mol) permeation behavior through these monoliths directly demonstrated the continuity and size selectivity of the nanoporous material. The ready accessibility of block copolymer HEX morphologies of varied chemistries suggests that this matrix etching strategy will enable the future design of functional, size-selective nanofiltration membrane materials.
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Affiliation(s)
- Hongyun Xu
- Department of Chemical Engineering & Materials Science, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Han Xiao
- Department of Chemical Engineering & Materials Science, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Christopher J Ellison
- Department of Chemical Engineering & Materials Science, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Mahesh K Mahanthappa
- Department of Chemical Engineering & Materials Science, University of Minnesota, Minneapolis, Minnesota 55455, United States
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2
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Liu S, Cao Y, Wu Z, Chen H. Reactive films fabricated using click sulfur(vi)–fluoride exchange reactions via layer-by-layer assembly. J Mater Chem B 2020; 8:5529-5534. [DOI: 10.1039/d0tb00908c] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We describe a novel and efficient method to generate tunable multifunctional polymer films with a wide range of potential biomedical applications using the “sulfur(vi)–fluoride exchange” (SuFEx) click reaction.
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Affiliation(s)
- Shengjie Liu
- College of Chemistry
- Chemical Engineering and Materials Science
- Collaborative Innovation Center for New Type Urbanization and Social Governance of Jiangsu Province
- Soochow University
- Suzhou 215123
| | - Yanping Cao
- College of Chemistry
- Chemical Engineering and Materials Science
- Collaborative Innovation Center for New Type Urbanization and Social Governance of Jiangsu Province
- Soochow University
- Suzhou 215123
| | - Zhaoqiang Wu
- College of Chemistry
- Chemical Engineering and Materials Science
- Collaborative Innovation Center for New Type Urbanization and Social Governance of Jiangsu Province
- Soochow University
- Suzhou 215123
| | - Hong Chen
- College of Chemistry
- Chemical Engineering and Materials Science
- Collaborative Innovation Center for New Type Urbanization and Social Governance of Jiangsu Province
- Soochow University
- Suzhou 215123
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3
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O’Neal JT, Bolen MJ, Dai EY, Lutkenhaus JL. Hydrogen-bonded polymer nanocomposites containing discrete layers of gold nanoparticles. J Colloid Interface Sci 2017; 485:260-268. [DOI: 10.1016/j.jcis.2016.09.044] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2016] [Revised: 09/19/2016] [Accepted: 09/20/2016] [Indexed: 01/23/2023]
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4
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Kim ET, Park J, Kim C, Simmonds AG, Sung YE, Pyun J, Char K. Conformal Polymeric Multilayer Coatings on Sulfur Cathodes via the Layer-by-Layer Deposition for High Capacity Retention in Li-S Batteries. ACS Macro Lett 2016; 5:471-475. [PMID: 35607235 DOI: 10.1021/acsmacrolett.6b00144] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
We report on the conformal coating of thickness-tunable multilayers directly onto the sulfur (S8) cathodes by the layer-by-layer (LbL) deposition for the significant improvement in the performances of Li-S batteries even without key additives (LiNO3) in the electrolyte. Poly(ethylene oxide) (PEO)/poly(acrylic acid) (PAA) multilayers on a single poly(allylamine hydrochloride) (PAH)/PAA priming bilayer, deposited on the S8 cathodes, effectively protected from the polysulfide leakage, while providing a Li+ ion diffusion channel. As a result, PAH/PAA/(PEO/PAA)3 multilayer-coated cathodes exhibited the highest capacity retention (806 mAh g-1) after 100 cycles at 0.5 C, as well as the high C-rate capability up to 2.0 C. Furthermore, the multilayer coating effectively mitigated the polysulfide shuttle effect in the absent of LiNO3 additives in the electrolyte.
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Affiliation(s)
| | | | - Chunjoong Kim
- Department
of Materials Science and Engineering, Chungnam National University, Daejeon 34134, Korea
| | - Adam G. Simmonds
- Department
of Chemistry and Biochemistry, University of Arizona, Tucson, Arizona 85721, United States
| | | | - Jeffrey Pyun
- Department
of Chemistry and Biochemistry, University of Arizona, Tucson, Arizona 85721, United States
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5
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Bao C, Ma B, Liu J, Wu Z, Zhang H, Jiang YJ, Sun J. Near-Infrared Light-Stimulus-Responsive Film as a Sacrificial Layer for the Preparation of Free-Standing Films. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:3393-9. [PMID: 27019115 DOI: 10.1021/acs.langmuir.6b00335] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
It remains a challenge to fabricate sacrificial films that are stable in most of solvents and can be readily decomposed on demand. Here we report the fabrication of a near-infrared (NIR) light decomposable sacrificial film by layer-by-layer (LbL) assembly of UV-light-decomposable poly((4-(2-bromoethoxy)-5-methoxy-2-nitrobenzyl acrylate) triethylammonium bromide) (PNBA-TEA), poly(sodium 4-styrene-sulfonate) (PSS), branched polyethyleimine (bPEI), and lanthanide-doped upconversion nanoparticles (UCNPs). The [(PNBA-TEA/PSS)*2/(bPEI/UCNPs)*3]*2 films are stable in deposition solutions of various materials and decompose upon NIR light irradiation. In the [(PNBA-TEA/PSS)*2/(bPEI/UCNPs)*3]*2 films, UCNPs can convert NIR light into UV light, which can decompose PNBA-TEA. After immersing the NIR light-irradiated [(PNBA-TEA/PSS)*2/(bPEI/UCNPs)*3]*2 films in 0.1 M aqueous NaHCO3 solution, the disintegration of the entire films occurs because of the repulsive force between the negatively charged photoproduct of PNBA-TEA and PSS. LbL-assembled (PAH/PAA)*50 films deposited on top of the NIR-light-decomposable [(PNBA-TEA/PSS)*2/(bPEI/UCNPs)*3]*2 films can be conveniently released to produce large-area and defect-free (PAH/PAA)*50 free-standing films after NIR light irradiation and subsequent immersion in 0.1 M aqueous NaHCO3 solution. Because of the satisfactory stability and on-demand decomposable property, the [(PNBA-TEA/PSS)*2/(bPEI/UCNPs)*3]*2 films are promising as sacrificial layers for the fabrication of various free-standing films.
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Affiliation(s)
- Chunyang Bao
- State Key Laboratory of Supramolecular Structure and Materials, International Joint Research Laboratory of Nano-Micro Architecture Chemistry (NMAC), College of Chemistry, Jilin University , Changchun 130012, People's Republic of China
| | - Benhua Ma
- State Key Laboratory of Supramolecular Structure and Materials, International Joint Research Laboratory of Nano-Micro Architecture Chemistry (NMAC), College of Chemistry, Jilin University , Changchun 130012, People's Republic of China
| | - Jiale Liu
- State Key Laboratory of Supramolecular Structure and Materials, International Joint Research Laboratory of Nano-Micro Architecture Chemistry (NMAC), College of Chemistry, Jilin University , Changchun 130012, People's Republic of China
| | - Zhennan Wu
- State Key Laboratory of Supramolecular Structure and Materials, International Joint Research Laboratory of Nano-Micro Architecture Chemistry (NMAC), College of Chemistry, Jilin University , Changchun 130012, People's Republic of China
| | - Hao Zhang
- State Key Laboratory of Supramolecular Structure and Materials, International Joint Research Laboratory of Nano-Micro Architecture Chemistry (NMAC), College of Chemistry, Jilin University , Changchun 130012, People's Republic of China
| | - Yi-Jun Jiang
- State Key Laboratory of Supramolecular Structure and Materials, International Joint Research Laboratory of Nano-Micro Architecture Chemistry (NMAC), College of Chemistry, Jilin University , Changchun 130012, People's Republic of China
| | - Junqi Sun
- State Key Laboratory of Supramolecular Structure and Materials, International Joint Research Laboratory of Nano-Micro Architecture Chemistry (NMAC), College of Chemistry, Jilin University , Changchun 130012, People's Republic of China
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6
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Duan Y, An Q, Zhang Q, Zhang Y. Smoothing of fast assembled layer-by-layer films by adjusting assembly conditions. Chem Res Chin Univ 2015. [DOI: 10.1007/s40242-015-4414-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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7
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Xu W, Li X, Cao J, Zhang H, Zhang H. Membranes with well-defined ions transport channels fabricated via solvent-responsive layer-by-layer assembly method for vanadium flow battery. Sci Rep 2014; 4:4016. [PMID: 24500376 PMCID: PMC3915323 DOI: 10.1038/srep04016] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2013] [Accepted: 01/21/2014] [Indexed: 12/22/2022] Open
Abstract
In this work we presented a general strategy for the fabrication of membranes with well-defined ions transport channels through solvent-responsive layer-by-layer assembly (SR-LBL). Multilayered poly (diallyldimethylammonium chloride) (PDDA) and poly (acrylic acid) (PAA) complexes were first introduced on the inner pore wall and the surface of sulfonated poly (ether ether ketone)/poly (ether sulfone) (PES/SPEEK) nanofiltration membranes to form ions transport channels with tuned radius. This type of membranes are highly efficient for the separators of batteries especially vanadium flow batteries (VFBs): the VFBs assembled with prepared membranes exhibit an outstanding performance in a wide current density range, which is much higher than that assembled with commercial Nafion 115 membranes. This idea could inspire the development of membranes for other flow battery systems, as well as create further progress in similar areas such as fuel cells, electro-dialysis, chlor-alkali cells, water electrolysis and so on.
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Affiliation(s)
- Wanxing Xu
- 1] Division of energy storage, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Zhongshan Road 457, Dalian 116023, China [2] University of Chinese Academy of Sciences, Beijing 100039, China
| | - Xianfeng Li
- Division of energy storage, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Zhongshan Road 457, Dalian 116023, China
| | - Jingyu Cao
- 1] Division of energy storage, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Zhongshan Road 457, Dalian 116023, China [2] University of Chinese Academy of Sciences, Beijing 100039, China
| | - Hongzhang Zhang
- Division of energy storage, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Zhongshan Road 457, Dalian 116023, China
| | - Huamin Zhang
- Division of energy storage, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Zhongshan Road 457, Dalian 116023, China
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8
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Estephan ZG, Qian Z, Lee D, Crocker JC, Park SJ. Responsive multidomain free-standing films of gold nanoparticles assembled by DNA-directed layer-by-layer approach. NANO LETTERS 2013; 13:4449-4455. [PMID: 23930738 DOI: 10.1021/nl4023308] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Responsive free-standing films of gold nanoparticles are fabricated by a new approach combining the programmable DNA-directed self-assembly and the layer-by-layer (LbL) thin film fabrication technique. This approach allows for the assembly of multidomain nanoparticle films with each domain possessing distinct properties in response to external stimuli, which is essential for the formation of dynamic nanostructures. Large area free-standing films of DNA-modified gold particles are fabricated by the selective melting of a sacrificial nanoparticle domain, taking advantage of the unique sharp melting transition of DNA-modified gold nanoparticles. Furthermore, we show that released multidomain films can be designed to further split into multiple intact daughter films in a precisely controlled manner, demonstrating that this new approach provides a powerful means to fabricate free-standing nanoparticle films that are capable of programmable transformation.
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Affiliation(s)
- Zaki G Estephan
- Department of Chemical and Biomolecular Engineering and ‡Department of Chemistry, University of Pennsylvania , Philadelphia, Pennsylvania 19104, United States
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9
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Sung C, Hearn K, Reid DK, Vidyasagar A, Lutkenhaus JL. A comparison of thermal transitions in dip- and spray-assisted layer-by-layer assemblies. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:8907-8913. [PMID: 23789626 DOI: 10.1021/la4016965] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Spray-assisted layer-by-layer (LbL) assembly is far more rapid than conventional dip-assisted assembly methods and has gained widespread interest recently. Even so, it has remained unclear as to how the structure and properties of the resulting LbL film vary with processing method. Here, we compared the thermal properties of poly(ethylene oxide) (PEO)/poly(acrylic acid) (PAA) and PEO/poly(methacrylic acid) (PMAA) hydrogen-bonded LbL assemblies prepared using both dip-assisted and spray-assisted deposition methods. While the surface morphologies of PEO/PAA LbL assemblies were similar, those of PEO/PMAA LbL assemblies were greatly influenced by deposition method. In both PEO/PAA and PEO/PMAA LbL assemblies, glass transition temperatures were not influenced by deposition method, but the transition's breadth was consistently larger for the spray-assisted LbL films. These results indicate that the internal structure of spray-assisted LbL films is slightly more heterogeneous, possibly arising from the shorter time scale of deposition.
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Affiliation(s)
- Choonghyun Sung
- Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, Texas 77843, United States
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10
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Lee SW, Lee D. Integrated Study of Water Sorption/Desorption Behavior of Weak Polyelectrolyte Layer-by-Layer Films. Macromolecules 2013. [DOI: 10.1021/ma400076d] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Sang-Wook Lee
- Department of Chemical and Biomolecular
Engineering, University of Pennsylvania, Philadelphia, Pennsylvania
19104, United States
| | - Daeyeon Lee
- Department of Chemical and Biomolecular
Engineering, University of Pennsylvania, Philadelphia, Pennsylvania
19104, United States
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11
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Lee SW, Tettey KE, Kim IL, Burdick JA, Lee D. Controlling the Cell-Adhesion Properties of Poly(acrylic acid)/Polyacrylamide Hydrogen-Bonded Multilayers. Macromolecules 2012. [DOI: 10.1021/ma301025a] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Sang-Wook Lee
- Department
of Chemical and Biomolecular Engineering and ‡Department of Bioengineering, University of Pennsylvania, Philadelphia,
Pennsylvania 19104, United States
| | - Kwadwo E. Tettey
- Department
of Chemical and Biomolecular Engineering and ‡Department of Bioengineering, University of Pennsylvania, Philadelphia,
Pennsylvania 19104, United States
| | - Iris L. Kim
- Department
of Chemical and Biomolecular Engineering and ‡Department of Bioengineering, University of Pennsylvania, Philadelphia,
Pennsylvania 19104, United States
| | - Jason A. Burdick
- Department
of Chemical and Biomolecular Engineering and ‡Department of Bioengineering, University of Pennsylvania, Philadelphia,
Pennsylvania 19104, United States
| | - Daeyeon Lee
- Department
of Chemical and Biomolecular Engineering and ‡Department of Bioengineering, University of Pennsylvania, Philadelphia,
Pennsylvania 19104, United States
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12
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Stawski D, Połowiński S, Herczyńska L, Sarna E, Rabiej S. Thermal effect of polymer layers deposition on polypropylene nonwoven fabric. J Appl Polym Sci 2012. [DOI: 10.1002/app.34616] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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13
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Irmukhametova GS, Fraser BJ, Keddie JL, Mun GA, Khutoryanskiy VV. Hydrogen-bonding-driven self-assembly of PEGylated organosilica nanoparticles with poly(acrylic acid) in aqueous solutions and in layer-by-layer deposition at solid surfaces. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:299-306. [PMID: 22106883 DOI: 10.1021/la2038735] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
PEGylated organosilica nanoparticles have been synthesized through self-condensation of (3-mercaptopropyl)trimethoxysilane in dimethyl sulfoxide into thiolated nanoparticles with their subsequent reaction with methoxypoly(ethylene glycol) maleimide. The PEGylated nanoparticles showed excellent colloidal stability over a wide range of pH in contrast to the parent thiolated nanoparticles, which have a tendency to aggregate irreversibly under acidic conditions (pH < 3.0). Due to the presence of a poly(ethylene glycol)-based corona, the PEGylated nanoparticles are capable of forming hydrogen-bonded interpolymer complexes with poly(acrylic acid) in aqueous solutions under acidic conditions, resulting in larger aggregates. The use of hydrogen-bonding interactions allows more efficient attachment of the nanoparticles to surfaces. The alternating deposition of PEGylated nanoparticles and poly(acrylic acid) on silicon wafer surfaces in a layer-by-layer fashion leads to multilayered coatings. The self-assembly of PEGylated nanoparticles with poly(acrylic acid) in aqueous solutions and at solid surfaces was compared to the behavior of linear poly(ethylene glycol). The nanoparticle system creates thicker layers than the poly(ethylene glycol), and a thicker layer is obtained on a poly(acrylic acid) surface than on a silica surface, because of the effects of hydrogen bonding. Some implications of these hydrogen-bonding-driven interactions between PEGylated nanoparticles and poly(acrylic acid) for pharmaceutical formulations are discussed.
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Affiliation(s)
- Galiya S Irmukhametova
- Reading School of Pharmacy, University of Reading, Whiteknights, P.O. Box 224, RG6 6AD Reading, United Kingdom
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14
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Hong J, Cho J, Char K. Hollow capsules prepared from all block copolymer micelle multilayers. J Colloid Interface Sci 2011; 364:112-7. [DOI: 10.1016/j.jcis.2011.08.012] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2011] [Revised: 08/02/2011] [Accepted: 08/03/2011] [Indexed: 10/17/2022]
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15
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Almeida LCP, Zucolotto V, Domingues RA, Atvars TDZ, Nogueira AF. Photoelectrochemical, photophysical and morphological studies of electrostatic layer-by-layer thin films based on poly(p-phenylenevinylene) and single-walled carbon nanotubes. Photochem Photobiol Sci 2011; 10:1766-72. [PMID: 21881664 DOI: 10.1039/c1pp05221g] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
The preparation of multilayer films based on poly(p-phenylenevinylene) (PPV) and carboxylic-functionalized single-walled carbon nanotubes (SWNT-COOH) by electrostatic interaction using the layer-by-layer (LbL) deposition method is reported herein. The multilayer build-up, monitored by UV-Vis and photoluminescence (PL) spectroscopies, displayed a linear behavior with the number of PPV and SWNT-COOH layers deposited that undergo deviation and spectral changes for thicker films. Film morphology was evaluated by AFM and epifluorescence microscopies showing remarkable changes after incorporation of SWNT-COOH layers. Films without SWNT show roughness and present dispersed grains; films with SWNT-COOH layers are flatter and some carbon nanotube bundles can be visualized. The photoinduced charge transfer from the conducting polymer to SWNT-COOH was analyzed by PL quenching either by the decrease of the emission intensity or by the presence of dark domains in the epifluorescence micrographs. Photoelectrochemical characterization was performed under white light and the films containing SWNT-COOH displayed photocurrent values between 2.0 μA cm(-2) and 7.5 μA cm(-2), as the amount of these materials increases in the film. No photocurrent was observed for the film without carbon nanotubes. Photocurrent generation was enhanced and became more stable when an intermediate layer of PEDOT:PSS was interposed between the active layer and the ITO electrode, indicating an improvement in hole transfer to the contacts. Our results indicate that these multilayer films are promising candidates as active layers for organic photovoltaic cells.
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Affiliation(s)
- L C P Almeida
- Institute of Chemistry, University of Campinas, SP, Brazil
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16
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Cerkez I, Kocer HB, Worley SD, Broughton RM, Huang TS. N-halamine biocidal coatings via a layer-by-layer assembly technique. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:4091-4097. [PMID: 21348478 DOI: 10.1021/la104923x] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Two N-halamine copolymer precursors, poly(2,2,6,6-tetramethyl-4-piperidyl methacrylate-co-acrylic acid potassium salt) and poly(2,2,6,6-tetramethyl-4-piperidyl methacrylate-co-trimethyl-2-methacryloxyethylammonium chloride) have been synthesized and successfully coated onto cotton fabric via a layer-by-layer (LbL) assembly technique. A multilayer thin film was deposited onto the fiber surfaces by alternative exposure to polyelectrolyte solutions. The coating was rendered biocidal by a dilute household bleach treatment. The biocidal efficacies of tested swatches composed of treated fibers were evaluated against Staphylococcus aureus and Escherichia coli. It was determined that chlorinated samples inactivated both S. aureus and E. coli O157:H7 within 15 min of contact time, whereas the unchlorinated control samples did not exhibit significant biocidal activities. Stabilities of the coatings toward washing and ultraviolet light exposure have also been studied. It was found that the stability toward washing was superior, whereas the UVA light stability was moderate compared to previously studied N-halamine moieties. The layer-by-layer assembly technique can be used to attach N-halamine precursor polymers onto cellulose surfaces without using covalently bonding tethering groups which limit the structure designs. In addition, ionic precursors are very soluble in water, thus promising for biocidal coatings without the use of organic solvents.
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Affiliation(s)
- Idris Cerkez
- Department of Polymer and Fiber Engineering, Auburn University, Auburn, Alabama 36849, United States
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17
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Niemiec W, Zapotoczny S, Szczubiałka K, Laschewsky A, Nowakowska M. Nanoheterogeneous multilayer films with perfluorinated domains fabricated using the layer-by-layer method. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:11915-11920. [PMID: 20527832 DOI: 10.1021/la1012044] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Nanoheterogenous ultrathin films containing perfluorinated domains were prepared via the layer-by-layer (LbL) electrostatic self-assembly method. The films are constructed from the amphiphilic cationic copolymer with perfluorinated side chains and poly(sodium styrenesulfonate) (PSS). The LbL process was optimized by the application of sonication which allowed linear growth of the film. The resulting film exhibited micellar structure with isolated fluorocarbon hydrophobic domains. The remarkable features of the films were their switchable wettability and friction properties. The obtained water-processable films can find a number of potential applications, e.g., as smart and low friction coatings.
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Affiliation(s)
- Wiktor Niemiec
- Faculty of Chemistry, Jagiellonian University, 30-060 Kraków, Ingardena 3, Poland
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18
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Kadi S, Cui D, Bayma E, Boudou T, Nicolas C, Glinel K, Picart C, Auzély-Velty R. Alkylamino Hydrazide Derivatives of Hyaluronic Acid: Synthesis, Characterization in Semidilute Aqueous Solutions, and Assembly into Thin Multilayer Films. Biomacromolecules 2009; 10:2875-84. [DOI: 10.1021/bm900701m] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Shirin Kadi
- Centre de Recherches sur les Macromolécules Végétales (CERMAV-CNRS), BP53, F-38041 Grenoble cedex 9, France, Minatec, Grenoble Institute of Technology and LMGP, 3 parvis Louis Néel, F-38016 Grenoble Cedex, France, and Laboratoire Polymères, Biopolymères, Surfaces, Université de Rouen - CNRS, Bd Maurice de Broglie, F-76821 Mont-Saint-Aignan, France
| | - Di Cui
- Centre de Recherches sur les Macromolécules Végétales (CERMAV-CNRS), BP53, F-38041 Grenoble cedex 9, France, Minatec, Grenoble Institute of Technology and LMGP, 3 parvis Louis Néel, F-38016 Grenoble Cedex, France, and Laboratoire Polymères, Biopolymères, Surfaces, Université de Rouen - CNRS, Bd Maurice de Broglie, F-76821 Mont-Saint-Aignan, France
| | - Eric Bayma
- Centre de Recherches sur les Macromolécules Végétales (CERMAV-CNRS), BP53, F-38041 Grenoble cedex 9, France, Minatec, Grenoble Institute of Technology and LMGP, 3 parvis Louis Néel, F-38016 Grenoble Cedex, France, and Laboratoire Polymères, Biopolymères, Surfaces, Université de Rouen - CNRS, Bd Maurice de Broglie, F-76821 Mont-Saint-Aignan, France
| | - Thomas Boudou
- Centre de Recherches sur les Macromolécules Végétales (CERMAV-CNRS), BP53, F-38041 Grenoble cedex 9, France, Minatec, Grenoble Institute of Technology and LMGP, 3 parvis Louis Néel, F-38016 Grenoble Cedex, France, and Laboratoire Polymères, Biopolymères, Surfaces, Université de Rouen - CNRS, Bd Maurice de Broglie, F-76821 Mont-Saint-Aignan, France
| | - Claire Nicolas
- Centre de Recherches sur les Macromolécules Végétales (CERMAV-CNRS), BP53, F-38041 Grenoble cedex 9, France, Minatec, Grenoble Institute of Technology and LMGP, 3 parvis Louis Néel, F-38016 Grenoble Cedex, France, and Laboratoire Polymères, Biopolymères, Surfaces, Université de Rouen - CNRS, Bd Maurice de Broglie, F-76821 Mont-Saint-Aignan, France
| | - Karine Glinel
- Centre de Recherches sur les Macromolécules Végétales (CERMAV-CNRS), BP53, F-38041 Grenoble cedex 9, France, Minatec, Grenoble Institute of Technology and LMGP, 3 parvis Louis Néel, F-38016 Grenoble Cedex, France, and Laboratoire Polymères, Biopolymères, Surfaces, Université de Rouen - CNRS, Bd Maurice de Broglie, F-76821 Mont-Saint-Aignan, France
| | - Catherine Picart
- Centre de Recherches sur les Macromolécules Végétales (CERMAV-CNRS), BP53, F-38041 Grenoble cedex 9, France, Minatec, Grenoble Institute of Technology and LMGP, 3 parvis Louis Néel, F-38016 Grenoble Cedex, France, and Laboratoire Polymères, Biopolymères, Surfaces, Université de Rouen - CNRS, Bd Maurice de Broglie, F-76821 Mont-Saint-Aignan, France
| | - Rachel Auzély-Velty
- Centre de Recherches sur les Macromolécules Végétales (CERMAV-CNRS), BP53, F-38041 Grenoble cedex 9, France, Minatec, Grenoble Institute of Technology and LMGP, 3 parvis Louis Néel, F-38016 Grenoble Cedex, France, and Laboratoire Polymères, Biopolymères, Surfaces, Université de Rouen - CNRS, Bd Maurice de Broglie, F-76821 Mont-Saint-Aignan, France
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Zhao Q, Qian J, An Q, Du B. Speedy fabrication of free-standing layer-by-layer multilayer films by using polyelectrolyte complex particles as building blocks. ACTA ACUST UNITED AC 2009. [DOI: 10.1039/b911386j] [Citation(s) in RCA: 35] [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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Zhunuspayev DE, Mun GA, Hole P, Khutoryanskiy VV. Solvent effects on the formation of nanoparticles and multilayered coatings based on hydrogen-bonded interpolymer complexes of poly(acrylic acid) with homo- and copolymers of N-vinyl pyrrolidone. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2008; 24:13742-13747. [PMID: 18980359 DOI: 10.1021/la802852h] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The formation of hydrogen-bonded interpolymer complexes between poly(acrylic acid) and poly(N-vinyl pyrrolidone) as well as amphiphilic copolymers of N-vinyl pyrrolidone with vinyl propyl ether has been studied in aqueous and organic solutions. It was demonstrated that introduction of vinyl propyl ether units into the macromolecules of the nonionic polymer enhances their ability to form complexes in aqueous solutions due to more significant contribution of hydrophobic effects. The complexation was found to be a multistage process that involves the formation of primary polycomplex particles, which further aggregate to form spherical nanoparticles. Depending on the environmental factors (pH, solvent nature), these nanoparticles may either form stable colloidal solutions or undergo further aggregation, resulting in precipitation of interpolymer complexes. In organic solvents, the intensity of complex formation increases in the following order: methanol < ethanol < isopropanol < dioxane. The multilayered coatings were developed using layer-by-layer deposition of interpolymer complexes on glass surfaces. It was demonstrated that the solvent nature affects the efficiency of coating deposition.
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Affiliation(s)
- Daulet E Zhunuspayev
- School of Pharmacy, University of Reading, Whiteknights, P.O. Box 224, Reading RG6 6AD, United Kingdom
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Seo J, Lutkenhaus JL, Kim J, Hammond PT, Char K. Effect of the layer-by-layer (LbL) deposition method on the surface morphology and wetting behavior of hydrophobically modified PEO and PAA LbL films. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2008; 24:7995-8000. [PMID: 18558781 DOI: 10.1021/la800906x] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
We demonstrate that the surface morphology and surface-wetting behavior of layer-by-layer (LbL) films can be controlled using different deposition methods. Multilayer films based upon hydrogen-bonding interactions between hydrophobically modified poly(ethylene oxide) (HM-PEO) and poly(acrylic acid) (PAA) have been prepared using the dip- and spin-assisted LbL methods. A three-dimensional surface structure in the dip-assisted multilayer films appeared above a critical number of layer pairs owing to the formation of micelles of HM-PEO in its aqueous dipping solution. In the case of spin-assisted HM-PEO/PAA multilayer films, no such surface morphology development was observed, regardless of the layer pair number, owing to the limited rearrangement and aggregation of HM-PEO micelles during spin deposition. The contrasting surface morphologies of the dip- and spin-assisted LbL films have a remarkable effect on the wetting behavior of water droplets. The water contact angle of the dip-assisted HM-PEO/PAA LbL films reaches a maximum at an intermediate layer pair number, coinciding with the critical number of layer pairs for surface morphology development, and then decreases rapidly as the surface structure is evolved and amplified. In contrast, spin-assisted HM-PEO/PAA LbL films yield a nearly constant water contact angle due to the surface chemical composition and roughness that is uniform independent of layer pair number. We also demonstrate that the multilayer samples prepared using both the dip- and spin-assisted LbL methods were easily peeled away from any type of substrate to yield free-standing films; spin-assisted LbL films appeared transparent, while dip-assisted LbL films were translucent.
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Affiliation(s)
- Jinhwa Seo
- Center for Functional Polymer Thin Films and School of Chemical and Biological Engineering, Seoul National University, Seoul 151-744, Korea
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Sambhy V, Peterson BR, Sen A. Multifunctional silane polymers for persistent surface derivatization and their antimicrobial properties. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2008; 24:7549-7558. [PMID: 18547073 DOI: 10.1021/la800858z] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
We demonstrate a versatile methodology combining both covalent surface anchoring and polymer cross-linking that is capable of forming long-lasting coatings on reactive and nonreactive surfaces. Polymers containing reactive methoxysilane groups form strong Si-O-Si links to oxide surfaces, thereby anchoring the polymer chains at multiple points. The interchain cross-linking of the methoxysilane groups provides additional durability to the coating and makes the coatings highly resistant to solvents. By tailoring the chemical structure of the polymer, we were able to control the surface energy (wetting) of a variety of surfaces over a wide range of water contact angles of 30-140 degrees . In addition, we synthesized covalently linked layer-by-layer polymeric assemblies from these novel methoxysilane polymers. Finally, antibacterial agents, such as silver bromide nanoparticles and triiodide ions, were introduced into these functional polymers to generate long-lasting and renewable antiseptic coatings on glass, metals, and textiles.
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Affiliation(s)
- Varun Sambhy
- Department of Industrial Chemistry, Faculty of Engineering, Tokyo University of Science 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan
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Kim BS, Park SW, Hammond PT. Hydrogen-bonding layer-by-layer-assembled biodegradable polymeric micelles as drug delivery vehicles from surfaces. ACS NANO 2008; 2:386-392. [PMID: 19206641 DOI: 10.1021/nn700408z] [Citation(s) in RCA: 324] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
We present the integration of amphiphilic block copolymer micelles as nanometer-sized vehicles for hydrophobic drugs within layer-by-layer (LbL) films using alternating hydrogen bond interactions as the driving force for assembly for the first time, thus enabling the incorporation of drugs and pH-sensitive release. The film was constructed based on the hydrogen bonding between poly(acrylic acid) (PAA) as an H-bond donor and biodegradable poly(ethylene oxide)-block-poly(epsilon-caprolactone) (PEO-b-PCL) micelles as the H-bond acceptor when assembled under acidic conditions. By taking advantage of the weak interactions of the hydrogen-bonded film on hydrophobic surfaces, it is possible to generate flexible free-standing films of these materials. A free-standing micelle LbL film of (PEO-b-PCL/PAA)60 with a thickness of 3.1 microm was isolated, allowing further characterization of the bulk film properties, including morphology and phase transitions, using transmission electron microscopy and differential scanning calorimetry. Because of the sensitive nature of the hydrogen bonding employed to build the multilayers, the film can be rapidly deconstructed to release micelles upon exposure to physiological conditions. However, we could also successfully control the rate of film deconstruction by cross-linking carboxylic acid groups in PAA through thermally induced anhydride linkages, which retard the drug release to the surrounding medium to enable sustained release over multiple days. To demonstrate efficacy in delivering active therapeutics, in vitro Kirby-Bauer assays against Staphylococcus aureus were used to illustrate that the drug-loaded micelle LbL film can release significant amounts of an active antibacterial drug, triclosan, to inhibit the growth of bacteria. Because the micellar encapsulation of hydrophobic therapeutics does not require specific chemical interactions, we believe this noncovalent approach provides a new route to integrating active small, uncharged, and hydrophobic therapeutics into LbL thin films for biological and biomedical coatings.
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Affiliation(s)
- Byeong-Su Kim
- Department of Chemical Engineering and Institute for Soldier Nanotechnologies, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, USA
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