Macroscopic 3D Nanographene with Dynamically Tunable Bulk Properties

Biener, Juergen; Dasgupta, Subho; Shao, Li‐Hua; Wang, Di; Worsley, Marcus A.; Wittstock, Arne; Lee, Jonathan R. I.; Biener, Monika M.; Orme, Christine A.; Kucheyev, S. O.; Wood, Brandon C.; Willey, Trevor M.; Hamza, A. V.; Weißmüller, J.; Hahn, Horst; Baumann, Theodore F.

doi:10.1002/adma.201202289

Cited by 116 publications

(114 citation statements)

References 33 publications

(35 reference statements)

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“…The prominence of the D peaks in both G60_G and G35_G is attributable to the presence of many small and disordered graphene domains. 31,32 The G band for the gyroids appears at a higher wavenumber than for the flat substrates which is consistent with the presence of strained nanosized graphene layers. 33 Figure 3b presents a 3D plot of ID/IG vs. I2D/IG vs. FWHMD / FWHMG (ratio of the full widths at half maximum of the peaks).…”

Section: Introductionsupporting

confidence: 65%

Chemical vapour deposition of freestanding sub-60 nm graphene gyroids

Cebo

Aria

Dolan

et al. 2017

Applied Physics Letters

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The direct chemical vapour deposition (CVD) of freestanding graphene gyroids with controlled sub-60 nm unit cell sizes is demonstrated. Three-dimensional (3D) nickel templates were fabricated through electrodeposition into a selectively voided triblock terpolymer. The high temperature instability of sub-micron unit cell structures was effectively addressed through the early introduction of carbon precursor, which stabilizes the metallized gyroidal templates. The as-grown graphene gyroids are self-supporting and can be transferred onto a variety of substrates. Furthermore they represent the smallest free standing graphene 3D structures yet produced with a pore size of tens of nm, as analysed by electron microscopy and optical spectroscopy. We discuss the generality of our methodology for the synthesis of other types of nanoscale, 3D graphene assemblies and the transferability of this approach to other 2D materials.

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Section: Introductionsupporting

confidence: 65%

Chemical vapour deposition of freestanding sub-60 nm graphene gyroids

Cebo

Aria

Dolan

et al. 2017

Applied Physics Letters

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“…In the past several years three-dimensional (3D) nanoporous graphene structures have attracted much attention since they are promising multi-functional materials which implement the superior properties of two-dimensional (2D) graphene sheets for macroscopic applications [1][2][3][4][5]. Graphene aerogel (GA) is the most typical 3D network structure consisting of graphene nano-sheets and possesses ultra-light weight (density as low as 0.16 mg/cm 3 ), ultra-high surface area (as large as 600 m 2 /g), super-elasticity, high compressibility and conductivity.…”

Section: Introductionmentioning

confidence: 99%

Mechanical and electro-mechanical properties of three-dimensional nanoporous graphene-poly(vinylidene fluoride) composites

Zheng

Jiang²,

Han³

et al. 2016

Express Polym. Lett.

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Abstract. Three-dimensional nanoporous graphene monoliths are utilized to prepare graphene-poly(vinylidene fluoride) nanocomposites with enhanced mechanical and electro-mechanical properties. Pre-treatment of the polymer (poly(vinylidene fluoride), PVDF) with graphene oxides (GOs) facilitates the formation of uniform and thin PVDF films with a typical thickness below 100 nm well coated at the graphene nano-sheets. Besides their excellent compressibility, ductility and mechanical strength, the nanoporous graphene-PVDF nanocomposites are found to possess high sensitivity in strain-dependent electrical conductivity. The improved mechanical and electro-mechanical properties are ascribed to the enhanced crystalline β phase in PVDF which possesses piezoelectricity. The mechanical relaxation analyses on the interfaces between graphene and PVDF reveal that the improved mechanical and electro-mechanical properties could result from the interaction between the -C=O groups in the nanoporous graphene and the -CF 2 groups in PVDF, which also explains the important role of GOs in the preparation of the graphene-polymer nanocomposites with superior combined mechanical and electro-mechanical properties.

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“…[1][2][3] However, covalent linkage between individual nano-blocks, without losing their distinctive properties like high surface area, electronic or electrochemical properties while constructing bulk macroscopic structures, has been identified as challenging. 4 Ultra-low density graphene and graphene oxide (GO) sponges, 5,6 graphene and graphene oxide hydrogels, 7 carbon nanotube sponges, 8 and other 2D material-based sponges 9 are some of the recently developed macroscopic 3D structures showing promising applications. Recently, as initiated by some of the authors, the covalent linkages between individual GO sheets were achieved by using simple chemistry, leading to the synthesis of highly stable interconnected bulk 3D structures.…”

Section: Introductionmentioning

confidence: 99%

The improved electrochemical performance of cross-linked 3D graphene nanoribbon monolith electrodes

2015

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The improved electrochemical performance of cross-linked 3D graphene nanoribbon monolith electrodes This work demonstrates the augmented electrochemical performance of 3-dimensional (3D) monolith electrode made of 2-dimensional (2D) graphene nanoribbons (GNRs). GNRs are benchmarked materials for electrochemical applications while here the authors demonstrate the effi cacy of 3D electrodes over 2D electrodes, enlightening the importance of electrode engineering. One of the authors T. N. Narayanan is a faculty member at TIFR-Centre for Interdisciplinary Sciences and Vineesh is a Ph.D. student at CSIR-CECRI. S. Alwarappan is a Senior Scientist at CSIR-CECRI.

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Macroscopic 3D Nanographene with Dynamically Tunable Bulk Properties

Cited by 116 publications

References 33 publications

Chemical vapour deposition of freestanding sub-60 nm graphene gyroids

Chemical vapour deposition of freestanding sub-60 nm graphene gyroids

Mechanical and electro-mechanical properties of three-dimensional nanoporous graphene-poly(vinylidene fluoride) composites

The improved electrochemical performance of cross-linked 3D graphene nanoribbon monolith electrodes

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