Fabrication of Free-Standing, Electrochemically Active, and Biocompatible Graphene Oxide−Polyaniline and Graphene−Polyaniline Hybrid Papers

Yan, Xingbin; Chen, Jiangtao; Yang, Jie; Xue, Qunji; Miele, Philippe

doi:10.1021/am100293r

Cited by 486 publications

(307 citation statements)

References 42 publications

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“…This is attributed to the good intrinsic biocompatibility and the hydrophilic nature of GO. Yan [123] obtained a similar conclusion when studying the biocompatibility of GO-polyaniline and graphene-polyaniline hybrid papers. Gurunathan [124] observed that microbially-reduced graphene oxide (M-rGO) exhibits significant biocompatibility for primary mouse embryonic fibroblast (PMEF) cells.…”

Section: Biological Property Of Go-based Materialssupporting

confidence: 55%

The Preparation of Graphene Oxide and Its Derivatives and Their Application in Bio-Tribological Systems

et al. 2014

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Graphene oxide (GO) can be readily modified for particular applications due to the existence of abundant oxygen-containing functional groups. Graphene oxide-based materials (GOBMs), which are biocompatible and hydrophilic, have wide potential applications in biomedical engineering and biotechnology. In this review, the preparation and characterization of GO and its derivatives are discussed at first. Subsequently, the biocompatibility and tribological behavior of GOBMs are reviewed. Finally, the applications of GOBMs as lubricants in bio-tribological systems are discussed in detail.

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Section: Biological Property Of Go-based Materialssupporting

confidence: 55%

The Preparation of Graphene Oxide and Its Derivatives and Their Application in Bio-Tribological Systems

et al. 2014

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“…Although the Raman spectra of two textured graphene films also had both D and G bands at the similar positions, the intensity ratio of D/G increased obviously in comparison with that of the GO spectra. It agreed well with the graphene materials prepared by hydrazine reduction [22,23], indicating the realization of deoxygenation in electrochemically reduced graphene films. In addition, the result of electrical conductivity measurements showed that the electrical conductivity of the textured graphene films was approximately 15 S/cm, which was much larger than that of the textured GO films (< 10 7 S/cm).…”

Section: Resultssupporting

confidence: 83%

“…The PDMS mold was peeled off from the textured nickel layer, to form a freestanding nickel slice. GO was prepared from natural graphite [20][21][22] (See the Supporting Information for details). A homogeneous GO aqueous suspension (0.5 mg/mL) was obtained with the aid of sonication using a high-power (800 W) ultrasonic pole at 0°C for 1 h, and then the suspension was centrifuged at 3000 r/min for 30 min.…”

Section: Methodsmentioning

confidence: 99%

Deposition of bio-mimicking graphene sheets with lotus leaf-like and cell-like structures on the nickel substrate

et al. 2012

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Bio-mimicking graphene films, deposited on textured nickel substrates, were synthesized by the following method: replicating the surface textures of the lotus leaf by polymer duplication, fabricating textured nickel substrates by electroplating on the polymer coated with a Au film, preparing bio-mimicking graphene oxide films on the nickel substrates by vacuum filtration, and electrochemical reduction. By controlling the vacuum filtration, this replica method can not only replicate the lotus leaf structure by a graphene film, but also can achieve a novel cell-like graphene film. Since graphene was first isolated in 2004 with the help of Scotch Tape, researchers have excitedly turned to the material to discover its potential applications, which include nanoelectronics, sensors, batteries, supercapacitors, hydrogen storage and nanocomposites [1][2][3][4][5]. Based on the excellent flexibility and mechanical stiffness, graphene oxide (GO) and graphene sheets can indeed be assembled into paper-like materials through flow-directed assembly by vacuum filtration of their colloidal dispersions [6,7]. Also, employing their stretchable physical property, GO and graphene films can be transferred to an arbitrary substrate [8]. Biomimic micro textures, owing to their intrinsic geometric microstructure, bring about many unique properties [9][10][11][12][13][14]. It is well known that the lotus leaf structure, which includes micro-bumps and a thin wax film on the surface, has attracted much interest with its self-cleaning function and low hysteresis ability to carry effortlessly the contaminations attached to the leaf when the surface is slightly tilted. Accordingly, there has been much effort to design and synthesize multifunctional artificial materials by mimicking the surface of the lotus leaf [15][16][17][18][19]. It is expected that, if graphene sheets were assembled into bio-mimicking lotus leaf surfaces, it would stimulate some novel functional properties for various potential applications.In this study, a preparation of the bio-mimicking graphene films with lotus leaf-like and cell-like structures on nickel substrates was first reported. A simple combination of duplication-electroplating resulted in fully duplicated surface micro textures of lotus leaf on nickel substrates. A controllable vacuum filtration realized the textured GO films on the bio-mimicking nickel substrates. Owing to the excellent flexibility and ultrathin structure of GO and graphene sheets, not only the morphology of bio-mimicking nickel substrates can be retained, also the original isolated micro-bumps on the surface can be linked with graphene sheets through prolonging the titration time during the vacuum filtration.

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“…Characterization of Graphene Quantum Dots GQD were synthesized following the modified method by Hummers where an orange yellow solution was obtained in photo-Fenton reaction of graphene oxide [59]. Graphene with 50 wt% KMnO 4 was successfully sheared as tiny dots by acidic suspension and the excess of KMnO 4 was consumed by hydrothermal process.…”

Section: Resultsmentioning

confidence: 99%

Nanofabrication of Graphene Quantum Dots with High Toxicity Against Malaria Mosquitoes, Plasmodium falciparum and MCF-7 Cancer Cells: Impact on Predation of Non-target Tadpoles, Odonate Nymphs and Mosquito Fishes

et al. 2016

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Fabrication of Free-Standing, Electrochemically Active, and Biocompatible Graphene Oxide−Polyaniline and Graphene−Polyaniline Hybrid Papers

Cited by 486 publications

References 42 publications

The Preparation of Graphene Oxide and Its Derivatives and Their Application in Bio-Tribological Systems

The Preparation of Graphene Oxide and Its Derivatives and Their Application in Bio-Tribological Systems

Deposition of bio-mimicking graphene sheets with lotus leaf-like and cell-like structures on the nickel substrate

Nanofabrication of Graphene Quantum Dots with High Toxicity Against Malaria Mosquitoes, Plasmodium falciparum and MCF-7 Cancer Cells: Impact on Predation of Non-target Tadpoles, Odonate Nymphs and Mosquito Fishes

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