101
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Lu G, Li H, Liusman C, Yin Z, Wu S, Zhang H. Surface enhanced Raman scattering of Ag or Au nanoparticle-decorated reduced graphene oxide for detection of aromatic molecules. Chem Sci 2011. [DOI: 10.1039/c1sc00254f] [Citation(s) in RCA: 226] [Impact Index Per Article: 17.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
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102
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Lv W, Xia Z, Wu S, Tao Y, Jin FM, Li B, Du H, Zhu ZP, Yang QH, Kang F. Conductive graphene-based macroscopic membrane self-assembled at a liquid–air interface. ACTA ACUST UNITED AC 2011. [DOI: 10.1039/c0jm02852e] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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103
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Zhou X, Boey F, Zhang H. Controlled growth of single-walled carbon nanotubes on patterned substrates. Chem Soc Rev 2011; 40:5221-31. [DOI: 10.1039/c1cs15045f] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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104
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Xiao B, Ding YH, Sun CC. Beryllium and boron decoration forms planar tetracoordinate carbon strips at the edge of graphene nanoribbons. Phys Chem Chem Phys 2011; 13:2732-7. [DOI: 10.1039/c0cp01498b] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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105
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Chang H, Sun Z, Ho KYF, Tao X, Yan F, Kwok WM, Zheng Z. A highly sensitive ultraviolet sensor based on a facile in situ solution-grown ZnO nanorod/graphene heterostructure. NANOSCALE 2011; 3:258-64. [PMID: 20976323 DOI: 10.1039/c0nr00588f] [Citation(s) in RCA: 80] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
The weak photon absorption and fast carrier kinetics of graphene limit its application in photodetection. This limitation can be overcome by introducing photosensitive nanostructures to graphene. Herein we report the synthesis of a ZnO nanorod/graphene heterostructure by a facile in situ solution growth method. By combining the attributes of photosensitive ZnO nanorods and highly conductive graphene, we for the first time demonstrate a highly sensitive visible-blind ultraviolet (UV) sensor based on graphene related heterostructure. The photoresponsibility of the UV sensor can reach 22.7 A W(-1), which is over 45,000 fold higher than that of single graphene sheet based photodetectors.
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Affiliation(s)
- Haixin Chang
- Nanotechnology Center, Institute of Textiles and Clothing, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR
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106
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Saha A, Basiruddin SK, Ray SC, Roy SS, Jana NR. Functionalized graphene and graphene oxide solution via polyacrylate coating. NANOSCALE 2010; 2:2777-2782. [PMID: 20936206 DOI: 10.1039/c0nr00376j] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Water soluble graphene with various chemical- and biofunctionalities is essential for their different applications. However, exfoliated graphenes are insoluble in water and water soluble graphene oxide precipitate if they are chemically reduced to graphene. We have developed a polyacrylate coating method for graphene oxide and then chemically reduced it into graphene. We found that polyacrylate coating can improve the colloidal stability of both graphene and graphene oxide. The coated graphene has been characterized using XPS, FTIR, XRD and micro-Raman spectroscopy. The primary amine present on the coating backbone has been used to derive glucose functionalized water soluble graphene. Various other functional graphenes can be anticipated from the polyacrylate coated graphene.
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Affiliation(s)
- Arindam Saha
- Centre for Advanced Materials, Indian Association for the Cultivation of Science, Kolkata, 700032, India.
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107
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Liang J, Chen Y, Xu Y, Liu Z, Zhang L, Zhao X, Zhang X, Tian J, Huang Y, Ma Y, Li F. Toward all-carbon electronics: fabrication of graphene-based flexible electronic circuits and memory cards using maskless laser direct writing. ACS APPLIED MATERIALS & INTERFACES 2010; 2:3310-3317. [PMID: 21058687 DOI: 10.1021/am1007326] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Owing to its extraordinary electronic property, chemical stability, and unique two-dimensional nanostructure, graphene is being considered as an ideal material for the highly expected all-carbon-based micro/nanoscale electronics. Herein, we present a simple yet versatile approach to constructing all-carbon micro/nanoelectronics using solution-processing graphene films directly. From these graphene films, various graphene-based microcosmic patterns and structures have been fabricated using maskless computer-controlled laser cutting. Furthermore, a complete system involving a prototype of a flexible write-once-read-many-times memory card and a fast data-reading system has been demonstrated, with infinite data retention time and high reliability. These results indicate that graphene could be the ideal material for fabricating the highly demanded all-carbon and flexible devices and electronics using the simple and efficient roll-to-roll printing process when combined with maskless direct data writing.
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Affiliation(s)
- Jiajie Liang
- Key Laboratory of Functional Polymer Materials and Center for Nanoscale Science & Technology, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
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108
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Electrochemical co-reduction synthesis of graphene/Au nanocomposites in ionic liquid and their electrochemical activity. Chem Phys Lett 2010. [DOI: 10.1016/j.cplett.2010.09.055] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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109
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Yin Z, Sun S, Salim T, Wu S, Huang X, He Q, Lam YM, Zhang H. Organic photovoltaic devices using highly flexible reduced graphene oxide films as transparent electrodes. ACS NANO 2010; 4:5263-5268. [PMID: 20738121 DOI: 10.1021/nn1015874] [Citation(s) in RCA: 188] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
The chemically reduced graphene oxide (rGO) was transferred onto polyethylene terephthalate (PET) substrates and then used as transparent and conductive electrodes for flexible organic photovoltaic (OPV) devices. The performance of the OPV devices mainly depends on the charge transport efficiency through rGO electrodes when the optical transmittance of rGO is above 65%. However, if the transmittance of rGO is less than 65%, the performance of the OPV device is dominated by the light transmission efficiency, that is, the transparency of rGO films. After the tensile strain (∼2.9%) was applied on the fabricated OPV device, it can sustain a thousand cycles of bending. Our work demonstrates the highly flexible property of rGO films, which provide the potential applications in flexible optoelectronics.
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Affiliation(s)
- Zongyou Yin
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798
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110
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Zhou X, Wei Y, He Q, Boey F, Zhang Q, Zhang H. Reduced graphene oxide films used as matrix of MALDI-TOF-MS for detection of octachlorodibenzo-p-dioxin. Chem Commun (Camb) 2010; 46:6974-6. [PMID: 20730227 DOI: 10.1039/c0cc01681k] [Citation(s) in RCA: 114] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
A reduced graphene oxide (rGO) film was used as the matrix in the matrix-assisted laser desorption/ionization time-of-flight mass spectroscopy (MALDI-TOF-MS) for the detection of octachlorodibenzo-p-dioxin (OCDD) with a detection weight as low as 500 pg.
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Affiliation(s)
- Xiaozhu Zhou
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
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111
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Liu J, Yin Z, Cao X, Zhao F, Lin A, Xie L, Fan Q, Boey F, Zhang H, Huang W. Bulk heterojunction polymer memory devices with reduced graphene oxide as electrodes. ACS NANO 2010; 4:3987-3992. [PMID: 20540553 DOI: 10.1021/nn100877s] [Citation(s) in RCA: 86] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
A unique device structure with a configuration of reduced graphene oxide (rGO) /P3HT:PCBM/Al has been designed for the polymer nonvolatile memory device. The current-voltage (I-V) characteristics of the fabricated device showed the electrical bistability with a write-once-read-many-times (WORM) memory effect. The memory device exhibits a high ON/OFF ratio (10(4)-10(5)) and low switching threshold voltage (0.5-1.2 V), which are dependent on the sheet resistance of rGO electrode. Our experimental results confirm that the carrier transport mechanisms in the OFF and ON states are dominated by the thermionic emission current and ohmic current, respectively. The polarization of PCBM domains and the localized internal electrical field formed among the adjacent domains are proposed to explain the electrical transition of the memory device.
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Affiliation(s)
- Juqing Liu
- Key Laboratory for Organic Electronics & Information Displays (KLOEID) and Institute of Advanced Materials (IAM), Nanjing University of Posts and Telecommunications, 9 Wenyuan Road, Nanjing 210046, China
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112
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Lu G, Zhou X, Li H, Yin Z, Li B, Huang L, Boey F, Zhang H. Nanolithography of single-layer graphene oxide films by atomic force microscopy. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:6164-6166. [PMID: 20369895 DOI: 10.1021/la101077t] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Atomic force microscopy-based nanolithography is used to generate the single-layer graphene oxide (GO) patterns on Si/SiO(2) substrates. In this process, a Si tip is used to scratch GO films, resulting in GO-free trenches. Using this method, various single-layer GO patterns such as gaps, ribbons, squares, triangles, and zigzags can be easily fabricated. By using the GO patterns as templates, the hybrid GO-Ag nanoparticle patterns were obtained. Our study provides a flexible, simple, convenient method for generating GO patterns on solid substrates, which could be useful for graphene material-based device applications.
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Affiliation(s)
- Gang Lu
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
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113
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Zhong X, Jin J, Li S, Niu Z, Hu W, Li R, Ma J. Aryne cycloaddition: highly efficient chemical modification of graphene. Chem Commun (Camb) 2010; 46:7340-2. [DOI: 10.1039/c0cc02389b] [Citation(s) in RCA: 232] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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