Liquid-phase photo-induced covalent modification (PICM) of single-layer graphene by short-chain fatty acids

Feng, Guilin; Inose, Tomoko; Suzuki, Nozomu et al.

Nanoscale, 2023, 15(10), 4932-4939

Permalink : https://hdl.handle.net/2115/89688

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https://doi.org/10.1039/d2nr06698j     10

論文情報

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アクセス権
open access
URI
https://hdl.handle.net/2115/89688
タイトル
Liquid-phase photo-induced covalent modification (PICM) of single-layer graphene by short-chain fatty acids
著者
Feng, Guilin ; Inose, Tomoko ; Suzuki, Nozomu ; Wen, Han ; Taemaitree, Farsai ; Wolf, Mathias ; Toyouchi, Shuichi ; Fujita, Yasuhiko ; Hirai, Kenji ; Uji-i, Hiroshi
著者名
Feng, Guilin
著者名
Inose, Tomoko
著者名
Suzuki, Nozomu
著者名
Wen, Han
著者名
Taemaitree, Farsai
著者名
Wolf, Mathias
著者名
Toyouchi, Shuichi
著者名
Fujita, Yasuhiko
e-Rad_Researcher
10754400
著者名
Hirai, Kenji
著者名
Uji-i, Hiroshi
言語
英語
発行日
2023
出版者
Royal Society of Chemistry
収録物名
Nanoscale
巻(号)
15(10)
ページ
4932-4939
抄録
We report an efficient photo-induced covalent modification (PICM) of graphene by short-chain fatty acids (SCFAs) with an alkyl chain at the liquid-solid interface for spatially resolved chemical functionalization of graphene. Light irradiation on monolayer graphene under an aqueous solution of the SCFAs with an alkyl chain efficiently introduces sp(3)-hybridized defects, where the reaction rates of PICM are significantly higher than those in pure water. Raman and IR spectroscopy revealed that a high density of methyl, methoxy, and acetate groups is covalently attached to the graphene surface while it was partially oxidized by other oxygen-containing functional groups, such as OH and COOH. A greater downshift of the G-band in Raman spectra was observed upon the PICM with longer alkyl chains, suggesting that the charge doping effect can be controlled by the alkyl chain length of the SCFAs. The systematic research and exploration of covalent modification in SCFAs provide new insight and a potentially facile method for bandgap engineering of graphene.
資源タイプ
学術雑誌論文
出版タイプ
Version of Record
PISSN
2040-3364
関連情報 (isIdenticalTo)
出版社版DOI
https://doi.org/10.1039/d2nr06698j