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Liu X, Chen B, Li Y, Kong Y, Gao M, Zhang LZ, Gu N. Development of an electrospun polycaprolactone/silk scaffold for potential vascular tissue engineering applications. J BIOACT COMPAT POL 2020. [DOI: 10.1177/0883911520973244] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Long-distance (⩾10 mm) arterial vascular defect injury was a massive challenge affecting human health. Compared with autologous transplantation, tissue-engineered scaffolds such as biocompatible silk fibroin (SF) scaffolds have been developed because they exhibit equivalent functional repair effects without adverse reactions. However, its mechanical strength and structural stability needed to be further improved to match the longer repair cycle of blood vessels while maintaining the original biological safety. Hence, we designed and prepared SF and hydrophobic polycaprolactone (PCL) composite microfibers by an improving electrospinning method. It was found that when the weight ratio of PCL to SF was 1: 1, a microfiber scaffold with high strength (6.16 N) and minimum degradability can be obtained. More importantly, compared with natural silk fibroin, the novel composite microfiber scaffolds can slightly inhibit cell infiltration and inflammation through co-culture with HUVECs in vitro and rabbit back transplantation in vivo. Furthermore, the fabricated scaffolds also demonstrated excellent structural stability in vivo because of the well-organized PCL doping in the structure. All these results indicated that the novel PCL/SF composite microfiber scaffolds were promising candidates for vascular tissue engineering applications.
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Affiliation(s)
- Xin Liu
- State Key Laboratory of Bioeletronics, Jiangsu Key Laboratory for Biomaterials and Devices, School of Biological Science & Medical Engineering, Southeast University, Nanjing, P. R. China
| | - Bo Chen
- Materials Science and Devices Institute, Suzhou University of Science and Technology, Suzhou, Jiangsu, P. R. China
| | - Yan Li
- State Key Laboratory of Bioeletronics, Jiangsu Key Laboratory for Biomaterials and Devices, School of Biological Science & Medical Engineering, Southeast University, Nanjing, P. R. China
| | - Yan Kong
- Jiangsu Key Laboratory of Neuroregeneration, Nantong University, Nantong, P. R. China
- Co-innovation Center of Neuroregeneration, Nantong, Jiangsu Province, P. R. China
| | - Ming Gao
- Jiangsu Key Laboratory of Neuroregeneration, Nantong University, Nantong, P. R. China
- Co-innovation Center of Neuroregeneration, Nantong, Jiangsu Province, P. R. China
| | - Lu Zhong Zhang
- Jiangsu Key Laboratory of Neuroregeneration, Nantong University, Nantong, P. R. China
- Co-innovation Center of Neuroregeneration, Nantong, Jiangsu Province, P. R. China
| | - Ning Gu
- State Key Laboratory of Bioeletronics, Jiangsu Key Laboratory for Biomaterials and Devices, School of Biological Science & Medical Engineering, Southeast University, Nanjing, P. R. China
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Xiao FX, Pagliaro M, Xu YJ, Liu B. Layer-by-layer assembly of versatile nanoarchitectures with diverse dimensionality: a new perspective for rational construction of multilayer assemblies. Chem Soc Rev 2017; 45:3088-121. [PMID: 27003471 DOI: 10.1039/c5cs00781j] [Citation(s) in RCA: 185] [Impact Index Per Article: 26.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Over the past few decades, layer-by-layer (LbL) assembly of multilayer thin films has garnered considerable interest on account of its ability to modulate nanometer control over film thickness and its extensive choice of usable materials for coating planar and particulate substrates, thus allowing for the fabrication of responsive and functional thin films for their potential applications in a myriad of fields. Herein, we provide elaborate information on the current developments of LbL assembly techniques including different properties, molecular interactions, and assembly methods associated with this promising bottom-up strategy. In particular, we highlight the principle for rational design and fabrication of a large variety of multilayer thin film systems including multi-dimensional capsules or spatially hierarchical nanostructures based on the LbL assembly technique. Moreover, we discuss how to judiciously choose the building block pairs when exerting the LbL assembly buildup which enables the engineering of multilayer thin films with tailor-made physicochemical properties. Furthermore, versatile applications of the diverse LbL-assembled nanomaterials are itemized and elucidated in light of specific technological fields. Finally, we provide a brief perspective and potential future challenges of the LbL assembly technology. It is anticipated that our current review could provide a wealth of guided information on the LbL assembly technique and furnish firm grounds for rational design of LbL assembled multilayer assemblies toward tangible applications.
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Affiliation(s)
- Fang-Xing Xiao
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62, Nanyang Drive, 637459, Singapore.
| | - Mario Pagliaro
- Istituto per lo Studio dei Materiali Nanostrutturati, CNR via U. La Malfa 153, 90146 Palermo, Italy.
| | - Yi-Jun Xu
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou 350002, P. R. China and College of Chemistry, Fuzhou University, New Campus, Fuzhou 350108, P. R. China.
| | - Bin Liu
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62, Nanyang Drive, 637459, Singapore.
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Xiang F, Givens TM, Grunlan JC. Fast Spray Deposition of Super Gas Barrier Polyelectrolyte Multilayer Thin Films. Ind Eng Chem Res 2015. [DOI: 10.1021/acs.iecr.5b01367] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Fangming Xiang
- Department of Mechanical Engineering, Texas A&M University, College Station, Texas 77843, United States
| | - Tara M. Givens
- Department of Mechanical Engineering, Texas A&M University, College Station, Texas 77843, United States
| | - Jaime C. Grunlan
- Department of Mechanical Engineering, Texas A&M University, College Station, Texas 77843, United States
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Wu X, Li S, Zhao Y, Tang Y, Liu J, Guo X, Wu D, He G. Using a layer-by-layer assembly method to fabricate a uniform and conductive nitrogen-doped graphene anode for indium-tin oxide-free organic light-emitting diodes. ACS APPLIED MATERIALS & INTERFACES 2014; 6:15753-15759. [PMID: 25162178 DOI: 10.1021/am502629b] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Highly conductive, uniform, and transparent nitrogen-doped graphene multilayer films were produced by a layer-by-layer (LbL) assembly method. Such a technique was realized by alternate deposition of graphene oxide modified with the cationic surfactant N,N,N-trimethyl-1-dodecanaminium bromide (CTAB) and the anionic surfactant sodium dodecylbenzenesulfonate. In this way, we can achieve a highly conductive (900 S/cm), uniform, and controllable graphene film in terms of thickness, transmittance, and sheet resistance after high-temperature reduction. The improved conductivity is attributed to better graphitization and nitrogen-doping introduced by CTAB. The organic light-emitting diode using such a multilayer graphene film fabricated by the LbL method as an anode obtains higher current density and luminance at low voltage compared to that with an indium-tin oxide (ITO) anode. Moreover, the current efficiency of graphene-based device is comparable to that of an ITO-based device. It is proved that such a nitrogen-doped multilayer graphene film developed by the LbL assembly technique is a promising candidate for a transparent electrode in organic electronics.
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Affiliation(s)
- Xinkai Wu
- National Engineering Lab for TFT-LCD Materials and Technologies, and Department of Electronic Engineering, and ‡School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University , Shanghai 200240, People's Republic of China
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Counter electrodes from polyaniline−graphene complex/graphene oxide multilayers for dye−sensitized solar cells. Electrochim Acta 2014. [DOI: 10.1016/j.electacta.2014.05.142] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Wang M, Tang Q, Chen H, He B. Counter electrodes from polyaniline−carbon nanotube complex/graphene oxide multilayers for dye-sensitized solar cell application. Electrochim Acta 2014. [DOI: 10.1016/j.electacta.2014.01.089] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Janegitz BC, dos Santos FA, Faria RC, Zucolotto V. Electrochemical determination of estradiol using a thin film containing reduced graphene oxide and dihexadecylphosphate. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2014; 37:14-9. [DOI: 10.1016/j.msec.2013.12.026] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2013] [Revised: 11/09/2013] [Accepted: 12/17/2013] [Indexed: 11/28/2022]
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Cai H, Tang Q, He B, Wang M, Yuan S, Chen H. Self-assembly of graphene oxide/polyaniline multilayer counter electrodes for efficient dye-sensitized solar cells. Electrochim Acta 2014. [DOI: 10.1016/j.electacta.2013.12.140] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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Cai H, Tang Q, He B, Yuan S. Insights on tunneled electrons for electrical and photoelectric behaviors in conducting multilayer films. POLYM ENG SCI 2014. [DOI: 10.1002/pen.23880] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Hongyuan Cai
- Institute of Materials Science and Engineering; Ocean University of China; Qingdao 266100 Shandong Province People's Republic of China
| | - Qunwei Tang
- Institute of Materials Science and Engineering; Ocean University of China; Qingdao 266100 Shandong Province People's Republic of China
| | - Benlin He
- Institute of Materials Science and Engineering; Ocean University of China; Qingdao 266100 Shandong Province People's Republic of China
| | - Shuangshuang Yuan
- Institute of Materials Science and Engineering; Ocean University of China; Qingdao 266100 Shandong Province People's Republic of China
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Wang M, Tang Q, Chen H, He B. Peculiar electrical and photoelectric behaviors in conducting multilayers: Insights into accumulative charge tunneling. J Appl Polym Sci 2013. [DOI: 10.1002/app.40258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Min Wang
- Institute of Materials Science and Engineering; Ocean University of China; Qingdao 266100 Shandong Province People's Republic of China
| | - Qunwei Tang
- Institute of Materials Science and Engineering; Ocean University of China; Qingdao 266100 Shandong Province People's Republic of China
| | - Haiyan Chen
- Institute of Materials Science and Engineering; Ocean University of China; Qingdao 266100 Shandong Province People's Republic of China
| | - Benlin He
- Institute of Materials Science and Engineering; Ocean University of China; Qingdao 266100 Shandong Province People's Republic of China
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Liang D, Tang Q, Chu L, Li Q, He B, Cai H, Wang M. Insights on the accumulation of charge carriers for enhanced electrical and photoelectric behaviors in conducting multilayer films. RSC Adv 2013. [DOI: 10.1039/c3ra44283g] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Hassouna F, Kashyap S, Laachachi A, Ball V, Chapron D, Toniazzo V, Ruch D. Peculiar reduction of graphene oxide into graphene after diffusion in exponentially growing polyelectrolyte multilayers. J Colloid Interface Sci 2012; 377:489-96. [PMID: 22503661 DOI: 10.1016/j.jcis.2012.03.054] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2011] [Revised: 02/14/2012] [Accepted: 03/19/2012] [Indexed: 11/30/2022]
Abstract
In the present work, in situ reduction of graphene oxide (GO) into graphene was preformed, after diffusion in exponentially growing polyelectrolyte multilayers, using sodium citrate as the reducing agent. First, the graphene oxide was obtained by treating a commercial grade of Expanded Graphite (EG). Based on XRD and Raman spectroscopy results, a complete exfoliation of graphene nanopellets down to one layer was achieved during the oxidation process. Secondly, the diffusion of GO was carried out in an exponentially growing polyelectrolyte multilayer film made from poly(diallyldimethylammonium chloride) as the polycation and from poly(acrylic acid) as the polyanion. Electrical conductivity of the GO based films was measured during the reduction process as a function of time. The conductivity reached values of the order of 10(-4) S cm(-1), whereas the pristine polyelectrolyte multilayer was highly insulating (∼10(-8) S cm(-1)). The conductivity also reached a maximal value after about 24 h of reduction and decreased for longer reduction duration. Some tentative explanations for this peculiar finding will be given.
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Affiliation(s)
- F Hassouna
- Advanced Materials and Structures, Centre de Recherche Public Henri Tudor, 66 rue de Luxembourg, L-4002 Esch-sur-Alzette, Luxembourg
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Ko YU, Cho SR, Choi KS, Park Y, Kim ST, Kim NH, Kim SY, Chang ST. Microlitre scale solution processing for controlled, rapid fabrication of chemically derived graphene thin films. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm15299a] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Kaniyoor A, Ramaprabhu S. Soft functionalization of graphene for enhanced tri-iodide reduction in dye sensitized solar cells. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm16596a] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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