1
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Benková Z, Čakánek P, Cordeiro MNDS. Adsorption of Peptides onto Carbon Nanotubes Grafted with Poly(ethylene Oxide) Chains: A Molecular Dynamics Simulation Study. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:3795. [PMID: 36364570 PMCID: PMC9655739 DOI: 10.3390/nano12213795] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 10/17/2022] [Accepted: 10/24/2022] [Indexed: 06/16/2023]
Abstract
Carbon nanotubes (CNTs) display exceptional properties that predispose them to wide use in technological or biomedical applications. To remove the toxicity of CNTs and to protect them against undesired protein adsorption, coverage of the CNT sidewall with poly(ethylene oxide) (PEO) is often considered. However, controversial results on the antifouling effectiveness of PEO layers have been reported so far. In this work, the interactions of pristine CNT and CNT covered with the PEO chains at different grafting densities with polyglycine, polyserine, and polyvaline are studied using molecular dynamics simulations in vacuum, water, and saline environments. The peptides are adsorbed on CNT in all investigated systems; however, the adsorption strength is reduced in aqueous environments. Save for one case, addition of NaCl at a physiological concentration to water does not appreciably influence the adsorption and structure of the peptides or the grafted PEO layer. It turns out that the flexibility of the peptide backbone allows the peptide to adopt more asymmetric conformations which may be inserted deeper into the grafted PEO layer. Water molecules disrupt the internal hydrogen bonds in the peptides, as well as the hydrogen bonds formed between the peptides and the PEO chains.
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Affiliation(s)
- Zuzana Benková
- Polymer Institute, Slovak Academy of Sciences, Dúbravská Cesta 9, 845 41 Bratislava, Slovakia
| | - Peter Čakánek
- Polymer Institute, Slovak Academy of Sciences, Dúbravská Cesta 9, 845 41 Bratislava, Slovakia
| | - Maria Natália D. S. Cordeiro
- LAQV@REQUIMTE, Department of Chemistry and Biochemistry, University of Porto, Rua do Campo Alegre s/n, 4169-007 Porto, Portugal
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2
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Shi L, Zhang D, Zhao J, Yin M, Liang A, Ghosh S. Small organic molecules act as a trigger in an "unzippering" mechanism to facilitate carbon nanotube dispersion. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 758:143620. [PMID: 33213919 DOI: 10.1016/j.scitotenv.2020.143620] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2020] [Revised: 10/26/2020] [Accepted: 11/07/2020] [Indexed: 06/11/2023]
Abstract
In binary dispersing agents system, the contribution and roles of different sized molecules to carbon nanotubes (CNTs) dispersion remain unclear, which hinders the understanding of the environmental behaviour and risks of CNTs. This study compared the dispersion of CNTs by m-nitrobenzoic acid (NBA), trans-cinnamic acid (TCA), tannic acid (TA), and their mixtures. The dispersion efficiency of CNTs significantly reduced with the increased solid-phase concentration (Qe) of TA due to the adsorption of TA on newly exposed CNTs surfaces. However, the CNTs dispersion efficiency by NBA or TCA was independent of Qe because the dispersed CNTs surface was completely occupied by NBA or TCA without new exposed sites available for subsequent adsorption. The mixture of NBA or TCA with TA significantly enhanced the dispersion efficiency of CNTs, indicating a synergistic effect of CNTs dispersion. The addition of NBA or TCA decreased the hydrodynamic diameter of CNTs dispersed by TA, which indicated that NBA or TCA facilitated TA wedging into CNTs bundles for more complete separation of CNTs. This study highlighted the triggering effect of small molecules in the "unzippering" mechanism for improving the dispersing efficiency of CNTs by large molecules.
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Affiliation(s)
- Lin Shi
- Yunnan Key Lab of Soil Carbon Sequestration and Pollution Control, Faculty of Environmental Science & Engineering, Kunming University of Science & Technology, Kunming 650500, China
| | - Di Zhang
- Yunnan Key Lab of Soil Carbon Sequestration and Pollution Control, Faculty of Environmental Science & Engineering, Kunming University of Science & Technology, Kunming 650500, China.
| | - Jinfeng Zhao
- Yunnan Key Lab of Soil Carbon Sequestration and Pollution Control, Faculty of Environmental Science & Engineering, Kunming University of Science & Technology, Kunming 650500, China
| | - Mengnan Yin
- Yunnan Key Lab of Soil Carbon Sequestration and Pollution Control, Faculty of Environmental Science & Engineering, Kunming University of Science & Technology, Kunming 650500, China
| | - Aiping Liang
- School of Environmental & Material Engineering, Yantai University, Yantai 264005, China
| | - Saikat Ghosh
- Yunnan Key Lab of Soil Carbon Sequestration and Pollution Control, Faculty of Environmental Science & Engineering, Kunming University of Science & Technology, Kunming 650500, China
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3
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Lee H. Molecular Simulations of PEGylated Biomolecules, Liposomes, and Nanoparticles for Drug Delivery Applications. Pharmaceutics 2020; 12:E533. [PMID: 32531886 PMCID: PMC7355693 DOI: 10.3390/pharmaceutics12060533] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2020] [Revised: 06/04/2020] [Accepted: 06/08/2020] [Indexed: 12/17/2022] Open
Abstract
Since the first polyethylene glycol (PEG)ylated protein was approved by the FDA in 1990, PEGylation has been successfully applied to develop drug delivery systems through experiments, but these experimental results are not always easy to interpret at the atomic level because of the limited resolution of experimental techniques. To determine the optimal size, structure, and density of PEG for drug delivery, the structure and dynamics of PEGylated drug carriers need to be understood close to the atomic scale, as can be done using molecular dynamics simulations, assuming that these simulations can be validated by successful comparisons to experiments. Starting with the development of all-atom and coarse-grained PEG models in 1990s, PEGylated drug carriers have been widely simulated. In particular, recent advances in computer performance and simulation methodologies have allowed for molecular simulations of large complexes of PEGylated drug carriers interacting with other molecules such as anticancer drugs, plasma proteins, membranes, and receptors, which makes it possible to interpret experimental observations at a nearly atomistic resolution, as well as help in the rational design of drug delivery systems for applications in nanomedicine. Here, simulation studies on the following PEGylated drug topics will be reviewed: proteins and peptides, liposomes, and nanoparticles such as dendrimers and carbon nanotubes.
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Affiliation(s)
- Hwankyu Lee
- Department of Chemical Engineering, Dankook University, Yongin 16890, Korea
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4
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Silsesquioxane-Polythiophene Hybrid Copolymer as an Efficient Modifier for Single-Walled Carbon Nanotubes. INT J POLYM SCI 2020. [DOI: 10.1155/2020/7659405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
One silsesquioxane-polythiophene hybrid copolymer, with combined star-like structure and intramolecular heterogeneity, was synthesized and sufficiently characterized via various methods, including FTIR, NMR, and SEC measurements. According to the exploration and characterization results, it was much more efficient at modifying SWNTs than its linear analogs in aqueous solution. The hydrophobic silsesquioxane core and PEDOT chains could locally anchor to the surface of the nanotubes, while the soluble flexible copolymer chains extended into the solution and rigid conjugated chains provided some π-π stacking effect to enhance adhesive force with the conjugated structure of the carbon nanotube, imparting steric stabilization to nanotube dispersion. The noncovalent interaction with SWNTs and solubility in aqueous solution improved the electrochemical characteristics of the modified-SWNT composite and availed for the preparation of a flexible and transparent electroactive film. Accordingly, this kind of silsesquioxane-polythiophene hybrid copolymer will be forwarded to apply to the assembling of flexible optoelectronic devices.
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5
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Fontana A, Guernelli S, Di Crescenzo A, Di Profio P, Palomba F, De Crescentini L, Baschieri A, Amorati R. Cardanol-like co-surfactants solubilized in pegylated micelles keep their antioxidant activity and preserve polyethylene glycol chains from oxidation. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.111465] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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6
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Di Crescenzo A, Di Profio P, Siani G, Zappacosta R, Fontana A. Optimizing the Interactions of Surfactants with Graphitic Surfaces and Clathrate Hydrates. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:6559-6570. [PMID: 27264111 DOI: 10.1021/acs.langmuir.6b01435] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Surfactants are amphiphilic molecules active at the surface/interface and able to self-assemble. Because of these properties, surfactants have been extensively used as detergents, emulsifiers, foaming agents, and wetting agents. New perspectives have been opened by the exploitation of surfactants for their capacity to interact as well with simple molecules or surfaces. This feature article gives an overview of significant contributions in the panorama of the current research on surfactants, partly accomplished as well by our research group. We look at several recent applications (e.g., adsorption to graphitic surfaces and interactions with hydrate crystals) with the eye of physical organic chemists. We demonstrate that, from the detailed investigation of the forces involved in the interactions with hydrophobic surfaces, it is possible to optimize the design of the surfactant that is able to form a stable and unbundled carbon nanotube dispersion as well as the best exfoliating agent for graphitic surfaces. By studying the effect of different surfactants on the capacity to favor or disfavor the formation of a gas hydrate, it is possible to highlight the main features that a surfactant should possess in order to be devoted to that specific application.
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Affiliation(s)
- Antonello Di Crescenzo
- Dipartimento di Farmacia, Università "G. d'Annunzio" , Via dei Vestini, 66100 Chieti, Italy
| | - Pietro Di Profio
- Dipartimento di Farmacia, Università "G. d'Annunzio" , Via dei Vestini, 66100 Chieti, Italy
| | - Gabriella Siani
- Dipartimento di Farmacia, Università "G. d'Annunzio" , Via dei Vestini, 66100 Chieti, Italy
| | - Romina Zappacosta
- Dipartimento di Farmacia, Università "G. d'Annunzio" , Via dei Vestini, 66100 Chieti, Italy
| | - Antonella Fontana
- Dipartimento di Farmacia, Università "G. d'Annunzio" , Via dei Vestini, 66100 Chieti, Italy
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7
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Ramezanpour M, Leung SSW, Delgado-Magnero KH, Bashe BYM, Thewalt J, Tieleman DP. Computational and experimental approaches for investigating nanoparticle-based drug delivery systems. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2016; 1858:1688-709. [PMID: 26930298 DOI: 10.1016/j.bbamem.2016.02.028] [Citation(s) in RCA: 105] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2016] [Revised: 02/20/2016] [Accepted: 02/23/2016] [Indexed: 12/21/2022]
Abstract
Most therapeutic agents suffer from poor solubility, rapid clearance from the blood stream, a lack of targeting, and often poor translocation ability across cell membranes. Drug/gene delivery systems (DDSs) are capable of overcoming some of these barriers to enhance delivery of drugs to their right place of action, e.g. inside cancer cells. In this review, we focus on nanoparticles as DDSs. Complementary experimental and computational studies have enhanced our understanding of the mechanism of action of nanocarriers and their underlying interactions with drugs, biomembranes and other biological molecules. We review key biophysical aspects of DDSs and discuss how computer modeling can assist in rational design of DDSs with improved and optimized properties. We summarize commonly used experimental techniques for the study of DDSs. Then we review computational studies for several major categories of nanocarriers, including dendrimers and dendrons, polymer-, peptide-, nucleic acid-, lipid-, and carbon-based DDSs, and gold nanoparticles. This article is part of a Special Issue entitled: Membrane Proteins edited by J.C. Gumbart and Sergei Noskov.
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Affiliation(s)
- M Ramezanpour
- Centre for Molecular Simulation, Department of Biological Sciences, University of Calgary, Calgary, AB T2N 1N4, Canada
| | - S S W Leung
- Department of Physics, Simon Fraser University, Burnaby, BC V5A 1S6, Canada
| | - K H Delgado-Magnero
- Centre for Molecular Simulation, Department of Biological Sciences, University of Calgary, Calgary, AB T2N 1N4, Canada
| | - B Y M Bashe
- Department of Molecular Biology and Biochemistry, Simon Fraser University, Burnaby, BC V5A 1S6, Canada
| | - J Thewalt
- Department of Physics, Simon Fraser University, Burnaby, BC V5A 1S6, Canada; Department of Molecular Biology and Biochemistry, Simon Fraser University, Burnaby, BC V5A 1S6, Canada
| | - D P Tieleman
- Centre for Molecular Simulation, Department of Biological Sciences, University of Calgary, Calgary, AB T2N 1N4, Canada
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8
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Kozlowska M, Goclon J, Rodziewicz P. Intramolecular Hydrogen Bonds in Low-Molecular-Weight Polyethylene Glycol. Chemphyschem 2016; 17:1143-53. [DOI: 10.1002/cphc.201501182] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Indexed: 11/06/2022]
Affiliation(s)
- Mariana Kozlowska
- Institute of Chemistry; University of Bialystok; Ciolkowskiego Str. 1K 15-245 Bialystok Poland
| | - Jakub Goclon
- Institute of Chemistry; University of Bialystok; Ciolkowskiego Str. 1K 15-245 Bialystok Poland
- Interdisciplinary Center for Molecular Materials (ICMM) and Computer-Chemistry-Center (CCC); Friedrich-Alexander-University Erlangen-Nürnberg; Nägelsbachstr. 25 91052 Erlangen Germany
| | - Pawel Rodziewicz
- Institute of Chemistry; University of Bialystok; Ciolkowskiego Str. 1K 15-245 Bialystok Poland
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9
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Kharisov BI, Kharissova OV, Dimas AV. The dispersion, solubilization and stabilization in “solution” of single-walled carbon nanotubes. RSC Adv 2016. [DOI: 10.1039/c6ra13187e] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Methods for the solubilization and dispersion of single-walled carbon nanotubes in water and organic solvents by physical and chemical methods have been reviewed.
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10
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Yu Z, Xu K, Fu Z, Liu X, Zhang Y, Peng J, Chen M. RAFT synthesis of polyethylene glycol (PEG) and amino-functionalized amphiphilic copolymers for dispersing carbon nanofibers. RSC Adv 2015. [DOI: 10.1039/c4ra15925j] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Quaternary copolymer dispersants containing polyethylene glycol (PEG) and amino side chains were synthesized via RAFT and were used to non-covalently functionalize CNFs.
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Affiliation(s)
- Zhiwei Yu
- Key Laboratory of Polymer Material for Electronics
- Guangzhou Institute of Chemistry
- Chinese Academy of Sciences
- Guangzhou 510650
- China
| | - Kai Xu
- Key Laboratory of Polymer Material for Electronics
- Guangzhou Institute of Chemistry
- Chinese Academy of Sciences
- Guangzhou 510650
- China
| | - Zien Fu
- Key Laboratory of Polymer Material for Electronics
- Guangzhou Institute of Chemistry
- Chinese Academy of Sciences
- Guangzhou 510650
- China
| | - Xin Liu
- Key Laboratory of Polymer Material for Electronics
- Guangzhou Institute of Chemistry
- Chinese Academy of Sciences
- Guangzhou 510650
- China
| | - Youxiong Zhang
- Key Laboratory of Polymer Material for Electronics
- Guangzhou Institute of Chemistry
- Chinese Academy of Sciences
- Guangzhou 510650
- China
| | - Jun Peng
- Key Laboratory of Polymer Material for Electronics
- Guangzhou Institute of Chemistry
- Chinese Academy of Sciences
- Guangzhou 510650
- China
| | - Mingcai Chen
- Key Laboratory of Polymer Material for Electronics
- Guangzhou Institute of Chemistry
- Chinese Academy of Sciences
- Guangzhou 510650
- China
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11
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Biver T, Criscitiello F, Di Francesco F, Minichino M, Swager T, Pucci A. MWCNT/perylene bisimide water dispersions for miniaturized temperature sensors. RSC Adv 2015. [DOI: 10.1039/c5ra11544b] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
We report on a new ionic surfactant based on perylene bisimide suitable for the exfoliation of MWCNTs. The system has utility for the formation of sensitive sensors to measure body temperature.
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Affiliation(s)
- Tarita Biver
- Dipartimento di Chimica e Chimica Industriale
- Università di Pisa
- 56124 Pisa
- Italy
- INSTM
| | | | - Fabio Di Francesco
- Dipartimento di Chimica e Chimica Industriale
- Università di Pisa
- 56124 Pisa
- Italy
- INSTM
| | - Matteo Minichino
- Dipartimento di Chimica e Chimica Industriale
- Università di Pisa
- 56124 Pisa
- Italy
| | - Timothy Swager
- Department of Chemistry and Institute for Soldier Nanotechnologies
- Massachusetts Institute of Technology
- Cambridge
- USA
| | - Andrea Pucci
- Dipartimento di Chimica e Chimica Industriale
- Università di Pisa
- 56124 Pisa
- Italy
- INSTM
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12
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Lee H. Dispersion and bilayer interaction of single-walled carbon nanotubes modulated by covalent and noncovalent PEGylation. MOLECULAR SIMULATION 2014. [DOI: 10.1080/08927022.2014.976638] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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13
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Di Crescenzo A, Ettorre V, Fontana A. Non-covalent and reversible functionalization of carbon nanotubes. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2014; 5:1675-90. [PMID: 25383279 PMCID: PMC4222398 DOI: 10.3762/bjnano.5.178] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2014] [Accepted: 08/29/2014] [Indexed: 05/18/2023]
Abstract
Carbon nanotubes (CNTs) have been proposed and actively explored as multipurpose innovative nanoscaffolds for applications in fields such as material science, drug delivery and diagnostic applications. Their versatile physicochemical features are nonetheless limited by their scarce solubilization in both aqueous and organic solvents. In order to overcome this drawback CNTs can be easily non-covalently functionalized with different dispersants. In the present review we focus on the peculiar hydrophobic character of pristine CNTs that prevent them to easily disperse in organic solvents. We report some interesting examples of CNTs dispersants with the aim to highlight the essential features a molecule should possess in order to act as a good carbon nanotube dispersant both in water and in organic solvents. The review pinpoints also a few examples of dispersant design. The last section is devoted to the exploitation of the major quality of non-covalent functionalization that is its reversibility and the possibility to obtain stimuli-responsive precipitation or dispersion of CNTs.
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Affiliation(s)
- Antonello Di Crescenzo
- Dipartimento di Farmacia, Università “G. d’Annunzio”, Via dei Vestini, 66100 Chieti, Italy
| | - Valeria Ettorre
- Dipartimento di Farmacia, Università “G. d’Annunzio”, Via dei Vestini, 66100 Chieti, Italy
| | - Antonella Fontana
- Dipartimento di Farmacia, Università “G. d’Annunzio”, Via dei Vestini, 66100 Chieti, Italy
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14
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Plisko TV, Bildyukevich AV. Debundling of multiwalled carbon nanotubes in N, N-dimethylacetamide by polymers. Colloid Polym Sci 2014. [DOI: 10.1007/s00396-014-3305-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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15
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Tang H, Ling Y, Deng Y, Zhang D. Synthesis and solid-state self-assembly of poly(ethylene glycol)-b-poly(γ-benzyl-l-glutamate)s and single-walled carbon nanotubes. ACTA ACUST UNITED AC 2014. [DOI: 10.1002/pola.27193] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Haoyu Tang
- Key Laboratory of Polymeric Materials and Application Technology of Hunan Province, Key Laboratory of Advanced Functional Polymer Materials of Colleges and Universities of Hunan Province; College of Chemistry, Xiangtan University; Xiangtan Hunan 411105 China
- Department of Chemistry and Macromolecular Studies Group; Louisiana State University; Baton Rouge Louisiana 70803
| | - Ying Ling
- Key Laboratory of Polymeric Materials and Application Technology of Hunan Province, Key Laboratory of Advanced Functional Polymer Materials of Colleges and Universities of Hunan Province; College of Chemistry, Xiangtan University; Xiangtan Hunan 411105 China
| | - Yong Deng
- Key Laboratory of Polymeric Materials and Application Technology of Hunan Province, Key Laboratory of Advanced Functional Polymer Materials of Colleges and Universities of Hunan Province; College of Chemistry, Xiangtan University; Xiangtan Hunan 411105 China
| | - Donghui Zhang
- Department of Chemistry and Macromolecular Studies Group; Louisiana State University; Baton Rouge Louisiana 70803
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16
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Di Crescenzo A, Cambré S, Germani R, Di Profio P, Fontana A. Dispersion of SWCNTs with imidazolium-rich surfactants. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:3979-3987. [PMID: 24660940 DOI: 10.1021/la500151j] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Starting from previous evidence on the crucial role of imidazolium ions, long alkyl chains, and aromatic rings in favoring the adsorption of surfactants onto carbon nanotube (CNT) walls, we have synthesized novel gemini surfactants with the aim to optimize and identify a reference structure for CNT dispersants. The efficiency of the novel surfactants has been evaluated, discussed, and compared with already well-investigated dispersants. The good affinity of the surfactants for the CNT sidewalls is highlighted by the presence of resonant van Hove absorption and highly resolved Raman and fluorescence spectra, while the strong hydrophobic interactions and favorable packing between the two alkyl chains of the investigated gemini surfactants and the CNT sidewalls ensure good CNT dispersion. Our results show no selectivity toward specific diameters/chiralities, confirming the twin heads of imidazolium surfactants are pointed toward the bulk water, while the alkyl chains are arranged on the CNT walls, improving water solubility at the expense of potential selectivity.
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Affiliation(s)
- Antonello Di Crescenzo
- Dipartimento di Farmacia, Università "G. d'Annunzio" , Via dei Vestini, I-66100 Chieti, Italy
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17
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Molecular Modeling of PEGylated Peptides, Dendrimers, and Single-Walled Carbon Nanotubes for Biomedical Applications. Polymers (Basel) 2014. [DOI: 10.3390/polym6030776] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
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18
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Elucidating chemical reactivity and transition state of mononuclear rearrangement of heterocycles through the use of compartimentalized micellar media. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.molcata.2013.11.029] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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19
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Tardani F, Pucci C, La Mesa C. Confining ss-DNA/carbon nanotube complexes in ordered droplets. SOFT MATTER 2014; 10:1024-1031. [PMID: 24983116 DOI: 10.1039/c3sm52073k] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
In 1/1 mass ratio mixtures made of single strand DNA and single-walled carbon nanotubes lyotropic nematic phases are formed. The process is assisted by segregative phase separation procedures. The liquid crystalline order occurring therein was confirmed by optical polarizing microscopy and zero-shear rheology. The resulting nematic droplets were dispersed in protein or cationic surfactant solutions, under appropriate pH and/or ionic strength conditions. The components of the hosting fluid(s) rapidly adsorb onto the droplets, form a permanent peel on their surface, and confine them. The peel resists osmotic gradients and has significant stability. The distribution of the species in the droplet and in the peel was determined by SEM. Data indicate that the peel contains protein or surfactant, depending on the titrant, when the core is rich in DNA and nanotubes. According to electron microscopy, nematic order in the droplets is partly retained.
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20
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Soulié-Ziakovic C, Nicolaÿ R, Prevoteau A, Leibler L. Dispersible Carbon Nanotubes. Chemistry 2013; 20:1210-7. [DOI: 10.1002/chem.201303818] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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21
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Müter D, Bock H. Torsional Forces Mediated by Surfactant Aggregates on Carbon Nanotube Junctions. J Phys Chem B 2013; 117:5585-93. [DOI: 10.1021/jp3122209] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Dirk Müter
- Department of Chemical Engineering, Heriot-Watt University, Edinburgh, EH14 4AS, Scotland, United Kingdom
| | - Henry Bock
- Department of Chemical Engineering, Heriot-Watt University, Edinburgh, EH14 4AS, Scotland, United Kingdom
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22
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Kharissova OV, Kharisov BI, de Casas Ortiz EG. Dispersion of carbon nanotubes in water and non-aqueous solvents. RSC Adv 2013. [DOI: 10.1039/c3ra43852j] [Citation(s) in RCA: 182] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
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23
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Prevoteau A, Soulié-Ziakovic C, Leibler L. Universally Dispersible Carbon Nanotubes. J Am Chem Soc 2012; 134:19961-4. [DOI: 10.1021/ja309029n] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Alexandre Prevoteau
- Matière
Molle et Chimie, UMR 7167 CNRS-ESPCI, Ecole Supérieure de Physique et Chimie Industrielles de la Ville de Paris, 10 rue Vauquelin 75005 Paris, France
| | - Corinne Soulié-Ziakovic
- Matière
Molle et Chimie, UMR 7167 CNRS-ESPCI, Ecole Supérieure de Physique et Chimie Industrielles de la Ville de Paris, 10 rue Vauquelin 75005 Paris, France
| | - Ludwik Leibler
- Matière
Molle et Chimie, UMR 7167 CNRS-ESPCI, Ecole Supérieure de Physique et Chimie Industrielles de la Ville de Paris, 10 rue Vauquelin 75005 Paris, France
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