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Yue Q, Wang S, Jones ST, Fielding LA. Multifunctional Self-Assembled Block Copolymer/Iron Oxide Nanocomposite Hydrogels Formed from Wormlike Micelles. ACS APPLIED MATERIALS & INTERFACES 2024; 16. [PMID: 38592714 PMCID: PMC11056933 DOI: 10.1021/acsami.4c03007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2024] [Revised: 03/25/2024] [Accepted: 03/26/2024] [Indexed: 04/10/2024]
Abstract
This article reports the preparation of multifunctional magnetic nanocomposite hydrogels formed from wormlike micelles. Specifically, iron oxide nanoparticles were incorporated into a temperature responsive block copolymer, poly(glycerol monomethacrylate)-b-poly(2-hydroxypropyl methacrylate) (PGMA-b-PHPMA), and graphene oxide (GO) dispersion at a low temperature (∼2 °C) through high-speed mixing and returning the mixture to room temperature, resulting in the formation of nanocomposite gels. The optimal concentrations of iron oxide and GO enhanced the gel strength of the nanocomposite gels, which exhibited a strong magnetic response when a magnetic field was applied. These materials retained the thermoresponsiveness of the PGMA-PHPMA wormlike micelles allowing for a solid-to-liquid transition to occur when the temperature was reduced. The mechanical and rheological properties and performance of the nanocomposite gels were demonstrated to be adjustable, making them suitable for a wide range of potential applications. These nanocomposite worm gels were demonstrated to be relatively adhesive and to act as strain and temperature sensors, with the measured electrical resistance of the nanocomposite gels changing with applied strain and temperature sweeps. The nanocomposite gels were found to recover efficiently after the application of high shear with approximately 100% healing efficiency within seconds. Additionally, these nanocomposite worm gels were injectable, and the addition of GO and iron oxide nanomaterials seemed to have no significant adverse impact on the biocompatibility of the copolymer gels, making them suitable not only for 3D printing in nanocomposite engineering but also for potential utilization in various biomedical applications as an injectable magnetic responsive hydrogel.
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Affiliation(s)
- Qi Yue
- Department
of Materials, School of Natural Sciences, University of Manchester, Oxford Road, Manchester M13 9PL, U.K.
- Henry
Royce Institute, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K.
| | - Shiyu Wang
- Department
of Materials, School of Natural Sciences, University of Manchester, Oxford Road, Manchester M13 9PL, U.K.
- Henry
Royce Institute, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K.
| | - Samuel T. Jones
- Department
of Materials, School of Natural Sciences, University of Manchester, Oxford Road, Manchester M13 9PL, U.K.
- Henry
Royce Institute, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K.
- School
of Chemistry, University of Birmingham, Edgbaston, Birmingham B15 2TT, U.K.
| | - Lee A. Fielding
- Department
of Materials, School of Natural Sciences, University of Manchester, Oxford Road, Manchester M13 9PL, U.K.
- Henry
Royce Institute, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K.
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2
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Liu J, Hu P, Ye T, Li J, Li J, Chen M, Zhang Z, Lin X, Tan X. Enhanced Polarization Properties of Holographic Storage Materials Based on RGO Size Effect. Molecules 2023; 29:214. [PMID: 38202797 PMCID: PMC10780354 DOI: 10.3390/molecules29010214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Revised: 12/25/2023] [Accepted: 12/27/2023] [Indexed: 01/12/2024] Open
Abstract
Polarized holographic properties play an important role in the holographic data storage of traditional organic recording materials. In this study, reduced graphene oxide (RGO) was introduced into a phenanthraquinone-doped polymethylmethacrylate (PQ/PMMA) photopolymer to effectively improve the orthogonal polarization holographic properties of the material. Importantly, the lateral size of RGO nanosheets has an important influence on the polymerization of MMA monomers. To some extent, a larger RGO diameter is more conducive to promoting the polymerization of MMA monomers and can induce more PMMA polymers to be grafted on its surface, thus obtaining a higher PMMA molecular weight. However, too large of a RGO will lead to too much grafting of the PMMA chain to shorten the length of a single PMMA chain, which will lead to the degradation of PQ/PMMA holographic performance. Compared with the original PQ/PMMA, the diffraction efficiency of the RGO-doped PQ/PMMA photopolymer can reach more than 11.4% (more than 3.5 times higher than the original PQ/PMMA), and its photosensitivity is significantly improved by 4.6 times. This study successfully synthesized RGO-doped PQ/PMMA high-performance photopolymer functional materials for multi-dimensional holographic storage by introducing RGO nanoparticles. Furthermore, the polarization holographic properties of PQ/PMMA photopolymer materials can be further accurately improved to a new level.
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Affiliation(s)
- Jie Liu
- College of Photonic and Electronic Engineering, Fujian Normal University, Fuzhou 350117, China; (J.L.); (P.H.); (T.Y.); (J.L.); (J.L.); (M.C.); (Z.Z.)
| | - Po Hu
- College of Photonic and Electronic Engineering, Fujian Normal University, Fuzhou 350117, China; (J.L.); (P.H.); (T.Y.); (J.L.); (J.L.); (M.C.); (Z.Z.)
| | - Tian Ye
- College of Photonic and Electronic Engineering, Fujian Normal University, Fuzhou 350117, China; (J.L.); (P.H.); (T.Y.); (J.L.); (J.L.); (M.C.); (Z.Z.)
| | - Jianan Li
- College of Photonic and Electronic Engineering, Fujian Normal University, Fuzhou 350117, China; (J.L.); (P.H.); (T.Y.); (J.L.); (J.L.); (M.C.); (Z.Z.)
| | - Jinhong Li
- College of Photonic and Electronic Engineering, Fujian Normal University, Fuzhou 350117, China; (J.L.); (P.H.); (T.Y.); (J.L.); (J.L.); (M.C.); (Z.Z.)
| | - Mingyong Chen
- College of Photonic and Electronic Engineering, Fujian Normal University, Fuzhou 350117, China; (J.L.); (P.H.); (T.Y.); (J.L.); (J.L.); (M.C.); (Z.Z.)
| | - Zuoyu Zhang
- College of Photonic and Electronic Engineering, Fujian Normal University, Fuzhou 350117, China; (J.L.); (P.H.); (T.Y.); (J.L.); (J.L.); (M.C.); (Z.Z.)
| | - Xiao Lin
- College of Photonic and Electronic Engineering, Fujian Normal University, Fuzhou 350117, China; (J.L.); (P.H.); (T.Y.); (J.L.); (J.L.); (M.C.); (Z.Z.)
| | - Xiaodi Tan
- College of Photonic and Electronic Engineering, Fujian Normal University, Fuzhou 350117, China; (J.L.); (P.H.); (T.Y.); (J.L.); (J.L.); (M.C.); (Z.Z.)
- Key Laboratory of Opto-Electronic Science and for Medicine of Ministry of Education, Fuzhou 350117, China
- Fujian Provincial Key Laboratory of Photonics Technology, Fuzhou 350117, China
- Fujian Provincial Engineering Technology Research Center of Photoelectric Sensing Application, Fuzhou 350117, China
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3
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Yue Q, Luo Z, Li X, Fielding LA. 3D printable, thermo-responsive, self-healing, graphene oxide containing self-assembled hydrogels formed from block copolymer wormlike micelles. SOFT MATTER 2023; 19:6513-6524. [PMID: 37584171 DOI: 10.1039/d3sm00737e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/17/2023]
Abstract
Graphene oxide (GO) containing block copolymer nanocomposite hydrogels formed from poly(glycerol monomethacrylate-block-hydroxypropyl methacrylate) (PGMA-PHPMA) wormlike micelles were prepared by either mixing GO and copolymer at low temperature or via in situ reversible addition-fragmentation chain-transfer (RAFT) polymerisation-induced self-assembly (PISA) of HPMA in the presence of a PGMA macromolecular chain-transfer agent and GO flakes. Hydrogels containing 15-25% w/w copolymer and 0 and 8% w/w GO, based on copolymer, were investigated and the maximum gel strength measured was ∼33 kPa for a 25% w/w copolymer gel prepared by in situ polymerisation and containing 2% w/w GO based on copolymer. This gel strength represents a fifteen-fold increase over the same copolymer gel without the addition of GO. The nanocomposite gels were found to recover efficiently after the application of high shear, with up to 98% healing efficiency within seconds. These gels are also 3D printable, self-healing, adhesive and temperature responsive on cooling and re-heating. The observed properties were both GO and copolymer concentration dependent, and tensile testing demonstrated that the nanocomposite gels had higher moduli, elongation at break and toughness than gels prepared without GO.
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Affiliation(s)
- Qi Yue
- Department of Materials, School of Natural Sciences, University of Manchester, Oxford Road, Manchester, M13 9PL, UK.
- Henry Royce Institute, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Zhidong Luo
- Department of Materials, School of Natural Sciences, University of Manchester, Oxford Road, Manchester, M13 9PL, UK.
- Henry Royce Institute, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Xueyuan Li
- Department of Materials, School of Natural Sciences, University of Manchester, Oxford Road, Manchester, M13 9PL, UK.
- Henry Royce Institute, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Lee A Fielding
- Department of Materials, School of Natural Sciences, University of Manchester, Oxford Road, Manchester, M13 9PL, UK.
- Henry Royce Institute, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK
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4
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Fadil Y, Thickett SC, Agarwal V, Zetterlund PB. Synthesis of graphene-based polymeric nanocomposites using emulsion techniques. Prog Polym Sci 2022. [DOI: 10.1016/j.progpolymsci.2021.101476] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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5
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Chen X, Fan K, Liu Y, Li Y, Liu X, Feng W, Wang X. Recent Advances in Fluorinated Graphene from Synthesis to Applications: Critical Review on Functional Chemistry and Structure Engineering. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2101665. [PMID: 34658081 DOI: 10.1002/adma.202101665] [Citation(s) in RCA: 43] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 05/27/2021] [Indexed: 05/11/2023]
Abstract
Fluorinated graphene (FG), as an emerging member of the graphene derivatives family, has attracted wide attention on account of its excellent performances and underlying applications. The introduction of a fluorine atom, with the strongest electronegativity (3.98), greatly changes the electron distribution of graphene, resulting in a series of unique variations in optical, electronic, magnetic, interfacial properties and so on. Herein, recent advances in the study of FG from synthesis to applications are introduced, and the relationship between its structure and properties is summarized in detail. Especially, the functional chemistry of FG has been thoroughly analyzed in recent years, which has opened a universal route for the functionalization and even multifunctionalization of FG toward various graphene derivatives, which further broadens its applications. Moreover, from a particular angle, the structure engineering of FG such as the distribution pattern of fluorine atoms and the regulation of interlayer structure when advanced nanotechnology gets involved is summarized. Notably, the elaborated structure engineering of FG is the key factor to optimize the corresponding properties for potential applications, and is also an up-to-date research hotspot and future development direction. Finally, perspectives and prospects for the problems and challenges in the study of FG are put forward.
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Affiliation(s)
- Xinyu Chen
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Material and Engineering, Sichuan University, Chengdu, 610065, P. R. China
| | - Kun Fan
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Material and Engineering, Sichuan University, Chengdu, 610065, P. R. China
| | - Yang Liu
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Material and Engineering, Sichuan University, Chengdu, 610065, P. R. China
| | - Yu Li
- School of Materials Science and Engineering, Tianjin University, Tianjin, 300354, P. R. China
| | - Xiangyang Liu
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Material and Engineering, Sichuan University, Chengdu, 610065, P. R. China
| | - Wei Feng
- School of Materials Science and Engineering, Tianjin University, Tianjin, 300354, P. R. China
| | - Xu Wang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Material and Engineering, Sichuan University, Chengdu, 610065, P. R. China
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6
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Monteiro AR, Neves MGPMS, Trindade T. Functionalization of Graphene Oxide with Porphyrins: Synthetic Routes and Biological Applications. Chempluschem 2021; 85:1857-1880. [PMID: 32845088 DOI: 10.1002/cplu.202000455] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Revised: 07/27/2020] [Indexed: 12/19/2022]
Abstract
Among the available carbon nanomaterials, graphene oxide (GO) has been widely studied because of the possibility of anchoring different chemical species for a large number of applications, including those requiring water-compatible systems. This Review summarizes the state-of-the-art of synthetic routes used to functionalize GO, such as those involving multiple covalent and non-covalent bonds to organic molecules, functionalization with nanoparticles and doping. As a recent development in this field, special focus is given to the formation of nanocomposites comprising GO and porphyrins, and their characterization through spectroscopic techniques (such as UV-Vis, fluorescence, Raman spectroscopy), among others. The potential of such hybrid systems in targeted biological applications is also discussed, namely for cancer therapies relying on photodynamic and photothermal therapies and for the inhibition of telomerase enzyme. Lastly, some promising alternative materials to GO are presented to overcome current challenges of GO-based research and to inspire future research directions in this field.
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Affiliation(s)
- Ana R Monteiro
- Department of Chemistry, University of Aveiro, CICECO - Aveiro Institute of Materials, 3810-193, Aveiro, Portugal.,Department of Chemistry, University of Aveiro, LAQV - Requimte, 3810-193, Aveiro, Portugal
| | - M Graça P M S Neves
- Department of Chemistry, University of Aveiro, LAQV - Requimte, 3810-193, Aveiro, Portugal
| | - Tito Trindade
- Department of Chemistry, University of Aveiro, CICECO - Aveiro Institute of Materials, 3810-193, Aveiro, Portugal
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7
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Chen Y, Hu P, Huang Z, Wang J, Song H, Chen X, Lin X, Wu T, Tan X. Significant Enhancement of the Polarization Holographic Performance of Photopolymeric Materials by Introducing Graphene Oxide. ACS APPLIED MATERIALS & INTERFACES 2021; 13:27500-27512. [PMID: 34096696 DOI: 10.1021/acsami.1c07390] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Relying on various defects and functional oxygen-containing groups on the basal planes, graphene oxide (GO) is commonly unitized for intimate mixing with a polymer matrix to fabricate high-performance nanocomposite polymeric materials with the characteristics of graphene. Herein, by introducing GO nanosheets in a phenanthraquinone-doped polymethyl methacrylate (PQ/PMMA) photopolymer, we demonstrate that the polarization holographic diffraction efficiency of nanocomposite materials can be dramatically enhanced up to nearly 10 times and the photosensitivity can also be enhanced by more than 3 times. Experimental observations reveal that the incorporation of GO nanosheets serves as a polymerization initiator not only to promote the polymerization of MMA monomers and induce the drafting behavior of the PMMA polymer on its surface but also to effectively modulate the molecular weight of the PQ/PMMA photopolymer by adjusting the doping concentration of GO nanosheets. The current study, for the first time, demonstrates that the modulation of molecular weight for PQ/PMMA photopolymers here exerts a significant impact on their holography performance. In addition, due to the strong physisorption of PQ photosensitizers onto GO nanosheets, the aggregation of PQ around GO-graft-PMMA also facilitates the formation of GO-graft-PMMA/PQ and is beneficial to the enhancement of holographic performance. The emergence of GO-graft-PMMA/PQ nanocomposite materials here is expected to fulfill the requirement of high-performance polarization-sensitive materials in the field of polarization holographic data storage and provide a facile but effective nanocomposite doping strategy to modulate the holographic performance of photopolymers from micro- and mesoscopic levels.
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Affiliation(s)
- Yuxin Chen
- College of Photonic and Electronic Engineer, Fujian Normal University, Fuzhou 350117, China
| | - Po Hu
- College of Photonic and Electronic Engineer, Fujian Normal University, Fuzhou 350117, China
| | - Zhiyun Huang
- College of Photonic and Electronic Engineer, Fujian Normal University, Fuzhou 350117, China
| | - Jinyu Wang
- College of Photonic and Electronic Engineer, Fujian Normal University, Fuzhou 350117, China
| | - Haiyang Song
- College of Photonic and Electronic Engineer, Fujian Normal University, Fuzhou 350117, China
| | - Xi Chen
- College of Photonic and Electronic Engineer, Fujian Normal University, Fuzhou 350117, China
| | - Xiao Lin
- College of Photonic and Electronic Engineer, Fujian Normal University, Fuzhou 350117, China
| | - Tianmin Wu
- College of Photonic and Electronic Engineer, Fujian Normal University, Fuzhou 350117, China
| | - Xiaodi Tan
- Information Photonics Research Center, Key Laboratory of Opto-Electronic Science and Technology for Medicine of Ministry of Education, Fujian Provincial Key Laboratory of Photonics Technology, Fujian Provincial Engineering Technology Research Center of Photoelectric Sensing Application, Fujian Normal University, Fuzhou 350117, China
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8
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Komeily-Nia Z, Qu LT, Li JL. Progress in the Understanding and Applications of the Intrinsic Reactivity of Graphene‐Based Materials. SMALL SCIENCE 2020. [DOI: 10.1002/smsc.202000026] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Affiliation(s)
- Zahra Komeily-Nia
- Institute for Frontier Materials Deakin University Geelong Victoria 3217 Australia
| | - Liang-Ti Qu
- Department of Chemistry Tsinghua University Beijing 100081 P. R. China
| | - Jing-Liang Li
- Institute for Frontier Materials Deakin University Geelong Victoria 3217 Australia
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9
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Hori Y, Kubo K, Nishina Y. Unveiling the Mechanism of Polymer Grafting on Graphene for Functional Composites: The Behavior of Radicals. Macromol Rapid Commun 2020; 42:e2000577. [PMID: 33251648 DOI: 10.1002/marc.202000577] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 11/08/2020] [Indexed: 11/07/2022]
Abstract
Polymer-graphene composites have attracted significant attention; however, their formation mechanisms are a focus of debate. This work tries to clarify how grafting occurs on graphene by electron spin resonance techniques. As a result, two pathways are found. One passes through the radicals formed by cleaving CO bonds on graphene are transferred to monomers, then grafting and polymerization proceed. Another mechanism passes through the oxy-radicals, which react with monomers in solution and finally react with carbon radicals on graphene. Based on the mechanism, various types of polymer-graphene composites are prepared, and applied to electrical conductive sheets, basic catalysts, and acidic catalysts.
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Affiliation(s)
- Yuki Hori
- Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama, 700-8530, Japan.,Research Core for Interdisciplinary Sciences, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama, 700-8530, Japan
| | - Koichiro Kubo
- Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama, 700-8530, Japan
| | - Yuta Nishina
- Research Core for Interdisciplinary Sciences, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama, 700-8530, Japan
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Moreira VR, Lebron YAR, da Silva MM, de Souza Santos LV, Jacob RS, de Vasconcelos CKB, Viana MM. Graphene oxide in the remediation of norfloxacin from aqueous matrix: simultaneous adsorption and degradation process. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:34513-34528. [PMID: 32557024 DOI: 10.1007/s11356-020-09656-6] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Accepted: 06/08/2020] [Indexed: 05/27/2023]
Abstract
In the present study, the simultaneous adsorption degradation of norfloxacin (NOR) by graphene oxide from aqueous matrix was verified. Graphene oxide (GO, ~ 8 layers) was prepared using modified Hummers method through the oxidation/exfoliation of expanded graphite. Spectroscopic techniques confirmed the NOR adsorption onto GO surface and the partial antibiotic degradation promoted by hydroxyl radicals derived from GO. Furthermore, the mass spectra after the adsorption-degradation processes showed NOR degradation intermediates that was compared and confirmed by other studies. The nanomaterial showed a removal capacity of 374.9 ± 29.8 mg g-1, observing greater contribution from the NOR in the zwitterionic form and removals up to 94.8%. The intraparticle diffusion process, assessed by Boyd's model and Fick's law, presented a greater contribution in the removal process, reaching the equilibrium 30 min after the beginning. In addition, the temperature increase would disadvantage the process, which was considered thermodynamically viable throughout the evaluated temperature range. Finally, the process was scaled-up in a single stage batch adsorber considering a NOR removal efficiency of 95%. This resulted in mass requirement of 63.6 g of GO in order to treat 0.5 m3 of contaminated water. In general, the simultaneous adsorption-degradation process was considered innovative and promising in pharmaceutical compounds remediation.
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Affiliation(s)
- Victor Rezende Moreira
- Department of Sanitary and Environmental Engineering, Federal University of Minas Gerais, P.O. Box 1294, Belo Horizonte, MG, 30270-901, Brazil
| | - Yuri Abner Rocha Lebron
- Department of Sanitary and Environmental Engineering, Federal University of Minas Gerais, P.O. Box 1294, Belo Horizonte, MG, 30270-901, Brazil
| | - Marielle Mara da Silva
- Department of Chemical Engineering, Pontifical Catholic University of Minas Gerais, P.O. Box 1686, Belo Horizonte, MG, 30535-901, Brazil
| | - Lucilaine Valéria de Souza Santos
- Department of Sanitary and Environmental Engineering, Federal University of Minas Gerais, P.O. Box 1294, Belo Horizonte, MG, 30270-901, Brazil
- Department of Chemical Engineering, Pontifical Catholic University of Minas Gerais, P.O. Box 1686, Belo Horizonte, MG, 30535-901, Brazil
| | - Raquel Sampaio Jacob
- Department of Civil Engineering, Pontifical Catholic University of Minas Gerais, P.O. Box 1686, Belo Horizonte, MG, 30535-901, Brazil
| | - Cláudia Karina Barbosa de Vasconcelos
- Department of Chemical Engineering, Pontifical Catholic University of Minas Gerais, P.O. Box 1686, Belo Horizonte, MG, 30535-901, Brazil
- Department of Physics and Chemistry, Pontifical Catholic University of Minas Gerais, P.O. Box 1686, Belo Horizonte, MG, 30535-901, Brazil
| | - Marcelo Machado Viana
- Department of Chemistry, Federal University of Minas Gerais, P.O. Box 1294, Belo Horizonte, MG, 30270-901, Brazil.
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11
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Ko EB, Lee DE, Yoon KB. Electrically Conductive Nanocomposites Composed of Styrene-Acrylonitrile Copolymer and rGO via Free-Radical Polymerization. Polymers (Basel) 2020; 12:E1221. [PMID: 32471120 PMCID: PMC7362241 DOI: 10.3390/polym12061221] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Revised: 05/25/2020] [Accepted: 05/26/2020] [Indexed: 11/16/2022] Open
Abstract
The polymerizable reduced graphene oxide (mRGO) grafted styrene-acrylonitrile copolymer composites were prepared via free radical polymerization. The graphene oxide (GO) and reduced graphene oxide (rGO) was reacted with 3-(tri-methoxysilyl)propylmethacrylate (MPS) and used as monomer to graft styrene and acrylonitrile on its surface. The successful modification and reduction of GO was confirmed using Fourier transform infrared spectroscopy (FT-IR), thermogravimetric analyzer (TGA), Raman and X-ray diffraction (XRD). The mRGO was prepared using chemical and solvothermal reduction methods. The effect of the reduction method on the composite properties and nanosheet distribution in the polymer matrix was studied. The thermal stability, electrical conductivity and morphology of nanocomposites were studied. The electrical conductivity of the obtained nanocomposite was very high at 0.7 S/m. This facile free radical polymerization provides a convenient route to achieve excellent dispersion and electrically conductive polymers.
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Affiliation(s)
- Eun Bin Ko
- Department of Polymer Science and Engineering, Kyungpook National University, Daegu 41566, Korea;
| | - Dong-Eun Lee
- School of Architecture & Civil Engineering, Kyungpook National University, Daegu 41566, Korea
| | - Keun-Byoung Yoon
- Department of Polymer Science and Engineering, Kyungpook National University, Daegu 41566, Korea;
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12
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Dinh LNM, Ramana LN, Agarwal V, Zetterlund PB. Miniemulsion polymerization of styrene using carboxylated graphene quantum dots as surfactant. Polym Chem 2020. [DOI: 10.1039/d0py00404a] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Carboxylated graphene quantum dots (cGQDs) were synthesized from dextrose and sulfuric acid via a hydrothermal process, and subsequently used as sole surfactant in miniemulsion polymerization of styrene.
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Affiliation(s)
- Le N. M. Dinh
- Centre for Advanced Macromolecular Design (CAMD)
- School of Chemical Engineering
- University of New South Wales
- Sydney
- Australia
| | - Lakshmi N. Ramana
- Department of Materials Engineering
- Indian Institute of Science
- Bangalore
- India
| | - Vipul Agarwal
- Centre for Advanced Macromolecular Design (CAMD)
- School of Chemical Engineering
- University of New South Wales
- Sydney
- Australia
| | - Per B. Zetterlund
- Centre for Advanced Macromolecular Design (CAMD)
- School of Chemical Engineering
- University of New South Wales
- Sydney
- Australia
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13
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Graphene oxide-catalyzed two-step continuous-flow conversion of aryl amine to unsymmetrical thioether. J Flow Chem 2019. [DOI: 10.1007/s41981-019-00048-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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14
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Eskandari P, Abousalman-Rezvani Z, Roghani-Mamaqani H, Salami-Kalajahi M, Mardani H. Polymer grafting on graphene layers by controlled radical polymerization. Adv Colloid Interface Sci 2019; 273:102021. [PMID: 31473461 DOI: 10.1016/j.cis.2019.102021] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2019] [Revised: 08/08/2019] [Accepted: 08/22/2019] [Indexed: 11/27/2022]
Abstract
In situ controlled radical polymerization (CRP) is considered as an important approach to graft polymer brushes with controlled grafting density, functionality, and thickness on graphene layers. Polymers are tethered with chain end or through its backbone to the surface or edge of graphene layers with two in situ polymerization methods of "grafting from" and "grafting through" and also a method based on coupling reactions known as "grafting to". The "grafting from" method relies on the propagation of polymer chains from the surface- or edge-attached initiators. The "grafting through" method is based on incorporation of double bond-modified graphene layers into polymer chains through the propagation reaction. The "grafting to" technique involves attachment of pre-fabricated polymer chains to the graphene substrate. Here, physical and chemical attachment approaches are also considered in polymer-modification of graphene layers. Combination of CRP mechanisms of reversible activation, degenerative (exchange) chain transfer, atom transfer, and reversible chain transfer with various kinds of grafting reactions makes it possible to selectively functionalize graphene layers. The main aim of this review is assessment of the recent advances in the field of preparation of polymer-grafted graphene substrates with well-defined polymers of controlled molecular weight, thickness, and polydispersity index. Study of the opportunities and challenges for the future works in controlling of grafting density, site-selectivity in grafting, and various topologies of the brushes with potential applications in stimuli-responsive surfaces, polymer composites, Pickering emulsions, coating technologies, and sensors is also considered.
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Affiliation(s)
- Parvaneh Eskandari
- Faculty of Polymer Engineering, Sahand University of Technology, P.O. Box: 51335-1996, Tabriz, Iran; Institute of Polymeric Materials, Sahand University of Technology, P.O. Box 51335-1996, Tabriz, Iran
| | - Zahra Abousalman-Rezvani
- Faculty of Polymer Engineering, Sahand University of Technology, P.O. Box: 51335-1996, Tabriz, Iran; Institute of Polymeric Materials, Sahand University of Technology, P.O. Box 51335-1996, Tabriz, Iran
| | - Hossein Roghani-Mamaqani
- Faculty of Polymer Engineering, Sahand University of Technology, P.O. Box: 51335-1996, Tabriz, Iran; Institute of Polymeric Materials, Sahand University of Technology, P.O. Box 51335-1996, Tabriz, Iran.
| | - Mehdi Salami-Kalajahi
- Faculty of Polymer Engineering, Sahand University of Technology, P.O. Box: 51335-1996, Tabriz, Iran; Institute of Polymeric Materials, Sahand University of Technology, P.O. Box 51335-1996, Tabriz, Iran.
| | - Hanieh Mardani
- Faculty of Polymer Engineering, Sahand University of Technology, P.O. Box: 51335-1996, Tabriz, Iran; Institute of Polymeric Materials, Sahand University of Technology, P.O. Box 51335-1996, Tabriz, Iran
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15
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Voylov DN, Bocharova V, Lavrik NV, Vlassiouk I, Polizos G, Volodin A, Shulga YM, Kisliuk A, Thiyagarajan T, Miller DD, Narayanan R, Sumpter BG, Sokolov AP. Noncontact tip-enhanced Raman spectroscopy for nanomaterials and biomedical applications. NANOSCALE ADVANCES 2019; 1:3392-3399. [PMID: 36133556 PMCID: PMC9419720 DOI: 10.1039/c9na00322c] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2019] [Accepted: 08/16/2019] [Indexed: 05/28/2023]
Abstract
Tip-enhanced Raman spectroscopy (TERS) has been established as one the most efficient analytical techniques for probing vibrational states with nanoscale resolution. While TERS may be a source of unique information about chemical structure and interactions, it has a limited use for materials with rough or sticky surfaces. Development of the TERS approach utilizing a non-contact scanning probe microscopy mode can significantly extend the number of applications. Here we demonstrate a proof of the concept and feasibility of a non-contact TERS approach and test it on various materials. Our experiments show that non-contact TERS can provide 10 nm spatial resolution and a Raman signal enhancement factor of 105, making it very promising for chemical imaging of materials with high aspect ratio surface patterns and biomaterials.
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Affiliation(s)
- Dmitry N Voylov
- Department of Mechanical Engineering, Tufts University Medford Massachusetts 02155 USA
- Chemical Sciences Division, Oak Ridge National Laboratory Oak Ridge Tennessee 37831 USA
| | - Vera Bocharova
- Chemical Sciences Division, Oak Ridge National Laboratory Oak Ridge Tennessee 37831 USA
| | - Nickolay V Lavrik
- Center for Nanophase Materials Sciences, Computational Sciences and Engineering Division, Oak Ridge National Laboratory Oak Ridge Tennessee 37831 USA
| | - Ivan Vlassiouk
- Energy & Transportation Science Division, Oak Ridge National Laboratory Oak Ridge Tennessee 37831 USA
| | - Georgios Polizos
- Energy & Transportation Science Division, Oak Ridge National Laboratory Oak Ridge Tennessee 37831 USA
| | - Alexei Volodin
- Institute of Problems of Chemical Physics RAS Chernogolovka Moscow region 142432 Russia
| | - Yury M Shulga
- National University of Science and Technology MISIS Moscow 119049 Russia
| | - Alexander Kisliuk
- Chemical Sciences Division, Oak Ridge National Laboratory Oak Ridge Tennessee 37831 USA
| | - Thirumagal Thiyagarajan
- Department of Medicine, University of Tennessee Health Science Center Memphis Tennessee 38103 USA
| | - Duane D Miller
- Department of Pharmaceutical Sciences, University of Tennessee Health Science Center Memphis Tennessee 38103 USA
| | - Ramesh Narayanan
- Department of Medicine, University of Tennessee Health Science Center Memphis Tennessee 38103 USA
| | - Bobby G Sumpter
- Center for Nanophase Materials Sciences, Computational Sciences and Engineering Division, Oak Ridge National Laboratory Oak Ridge Tennessee 37831 USA
| | - Alexei P Sokolov
- Chemical Sciences Division, Oak Ridge National Laboratory Oak Ridge Tennessee 37831 USA
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16
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Chen M, Luo Y, Zhang C, Guo L, Wang Q, Wu Y. Graphene oxide mediated thiolation of indoles in water: a green and sustainable approach to synthesize 3-sulfenylindoles. Org Chem Front 2019. [DOI: 10.1039/c8qo00726h] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Graphene oxide, a green and recyclable catalyst, was developed to synthesize 3-sulfenylindoles in water.
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Affiliation(s)
- Min Chen
- Key Laboratory of Drug Targeting and Drug Delivery System of Ministry of Education
- West China School of Pharmacy
- Sichuan University Sichuan 610041
- China
| | - Yi Luo
- Key Laboratory of Drug Targeting and Drug Delivery System of Ministry of Education
- West China School of Pharmacy
- Sichuan University Sichuan 610041
- China
| | - Chen Zhang
- Key Laboratory of Drug Targeting and Drug Delivery System of Ministry of Education
- West China School of Pharmacy
- Sichuan University Sichuan 610041
- China
| | - Li Guo
- Key Laboratory of Drug Targeting and Drug Delivery System of Ministry of Education
- West China School of Pharmacy
- Sichuan University Sichuan 610041
- China
| | - Qiantao Wang
- Key Laboratory of Drug Targeting and Drug Delivery System of Ministry of Education
- West China School of Pharmacy
- Sichuan University Sichuan 610041
- China
| | - Yong Wu
- Key Laboratory of Drug Targeting and Drug Delivery System of Ministry of Education
- West China School of Pharmacy
- Sichuan University Sichuan 610041
- China
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17
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Voylov DN, Ivanov IN, Bykov VI, Tsybenova SB, Merkulov IA, Kurochkin SA, Holt AP, Kisliuk AM, Sokolov AP. Oscillatory behaviour of the surface reduction process of multilayer graphene oxide at room temperature. RSC Adv 2016. [DOI: 10.1039/c6ra14414d] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
We report the observation of oscillatory redox reactions on the surface of multilayer graphene oxide (GO) films at room temperature.
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Affiliation(s)
- D. N. Voylov
- Department of Chemistry
- University of Tennessee
- Knoxville
- USA 37916-1600
| | - I. N. Ivanov
- Department of Chemistry
- University of Tennessee
- Knoxville
- USA 37916-1600
- Oak Ridge National Laboratory
| | - V. I. Bykov
- Emanuel Institute of Biochemical Physics
- RAS
- Moscow
- Russia
| | | | | | | | - A. P. Holt
- Department of Chemistry
- University of Tennessee
- Knoxville
- USA 37916-1600
| | | | - A. P. Sokolov
- Department of Chemistry
- University of Tennessee
- Knoxville
- USA 37916-1600
- Oak Ridge National Laboratory
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