Abstract
When the width of a graphene nanoribbon (GNR) is only a few nanometers, it possesses semiconducting properties that enable various high-end electronic applications. In this study, we report that the dense and stable dispersion of a natural graphite formed using flavin mononucleotide (FMN) as a surfactant produces GNRs as small as 10 nm in width. High-resolution transmission electron microscopy reveals GNRs with various widths, along with a graphene flake containing straight-edged GNRs and cuts, depending on substrate treatments. Such nanoribbon formation originates from sonochemical graphene unzipping with a one-dimensional FMN supramolecular ribbon as a template. Raman spectroscopy demonstrates the universal intensity ratio of D over D0 bands near 4, supporting formation of continuous edge defect. Thermal annealing enhances the optical contrast and van der Waals interactions of the graphene film, resulting in increased conductivity compared to the as-prepared graphene film, which is also better than that of reduced graphene oxide.
| Original language | English |
|---|---|
| Pages (from-to) | 629-638 |
| Number of pages | 10 |
| Journal | Carbon |
| Volume | 81 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 2015 Jan 1 |
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All Science Journal Classification (ASJC) codes
- Chemistry(all)
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Graphene nanoribbons formed by a sonochemical graphene unzipping using flavin mononucleotide as a template. / Yoon, Woojin; Lee, Yonggeun; Jang, Hongje; Jang, Myungsu; Kim, Jin Sung; Lee, Hee Sung; Im, Seongil; Boo, Doo Wan; Park, Jiwoong; Ju, Sang-Yong.
In: Carbon, Vol. 81, No. 1, 01.01.2015, p. 629-638.Research output: Contribution to journal › Article
TY - JOUR
T1 - Graphene nanoribbons formed by a sonochemical graphene unzipping using flavin mononucleotide as a template
AU - Yoon, Woojin
AU - Lee, Yonggeun
AU - Jang, Hongje
AU - Jang, Myungsu
AU - Kim, Jin Sung
AU - Lee, Hee Sung
AU - Im, Seongil
AU - Boo, Doo Wan
AU - Park, Jiwoong
AU - Ju, Sang-Yong
PY - 2015/1/1
Y1 - 2015/1/1
N2 - When the width of a graphene nanoribbon (GNR) is only a few nanometers, it possesses semiconducting properties that enable various high-end electronic applications. In this study, we report that the dense and stable dispersion of a natural graphite formed using flavin mononucleotide (FMN) as a surfactant produces GNRs as small as 10 nm in width. High-resolution transmission electron microscopy reveals GNRs with various widths, along with a graphene flake containing straight-edged GNRs and cuts, depending on substrate treatments. Such nanoribbon formation originates from sonochemical graphene unzipping with a one-dimensional FMN supramolecular ribbon as a template. Raman spectroscopy demonstrates the universal intensity ratio of D over D0 bands near 4, supporting formation of continuous edge defect. Thermal annealing enhances the optical contrast and van der Waals interactions of the graphene film, resulting in increased conductivity compared to the as-prepared graphene film, which is also better than that of reduced graphene oxide.
AB - When the width of a graphene nanoribbon (GNR) is only a few nanometers, it possesses semiconducting properties that enable various high-end electronic applications. In this study, we report that the dense and stable dispersion of a natural graphite formed using flavin mononucleotide (FMN) as a surfactant produces GNRs as small as 10 nm in width. High-resolution transmission electron microscopy reveals GNRs with various widths, along with a graphene flake containing straight-edged GNRs and cuts, depending on substrate treatments. Such nanoribbon formation originates from sonochemical graphene unzipping with a one-dimensional FMN supramolecular ribbon as a template. Raman spectroscopy demonstrates the universal intensity ratio of D over D0 bands near 4, supporting formation of continuous edge defect. Thermal annealing enhances the optical contrast and van der Waals interactions of the graphene film, resulting in increased conductivity compared to the as-prepared graphene film, which is also better than that of reduced graphene oxide.
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UR - http://www.scopus.com/inward/citedby.url?scp=84922763868&partnerID=8YFLogxK
U2 - 10.1016/j.carbon.2014.09.097
DO - 10.1016/j.carbon.2014.09.097
M3 - Article
VL - 81
SP - 629
EP - 638
JO - Carbon
JF - Carbon
SN - 0008-6223
IS - 1
ER -