A light-mediated covalently patterned graphene substrate for graphene-enhanced Raman scattering (GERS)

Guilin Feng; Nozomu Suzuki; Qiang Zhang; Jiangtao Li; Tomoko Inose; Farsai Taemaitree; Muhammed Shameem K. M.; Shuichi Toyouchi; Yasuhiko Fujita; Kenji Hirai; Hiroshi Uji-i

doi:10.1039/D3CC03304J

A light-mediated covalently patterned graphene substrate for graphene-enhanced Raman scattering (GERS)†

Guilin Feng,

^a Nozomu Suzuki,^b Qiang Zhang,^a Jiangtao Li,^a Tomoko Inose,

^c Farsai Taemaitree,

^ad Muhammed Shameem K. M.,

^e Shuichi Toyouchi,

^ef Yasuhiko Fujita,

^g Kenji Hirai

^a and Hiroshi Uji-i

*^ace

Author affiliations

* Corresponding authors

^a Research Institute for Electronic Science (RIES) and Division of Information Science and Technology, Graduate School of Information Science and Technology, Hokkaido University, N20W10, Sapporo, Hokkaido 001-0020, Japan
E-mail: hiroshi.ujii@kuleuven.be, hiroshi.ujii@es.hokudai.ac.jp

^b Department of Chemical Science and Engineering, Graduate School of Engineering, Kobe University, Rokko, Nada, Kobe 657-8501, Japan

^c Institute for Integrated Cell-Material Science (WPI-iCeMS), Kyoto University, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan

^d Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University, 2-1-1 Katahira, Aoba-Ward, Sendai 980-8577, Japan

^e Department of Chemistry, Division of Molecular Imaging and Photonics, KU Leuven, Celestijnenlaan 200F, Leuven B-3001, Belgium

^f Research Institute for Light-induced Acceleration System (RILACS), Osaka Metropolitan University, Sakai, Osaka 599-8570, Japan

^g Research Institute for Sustainable Chemistry, National Institute of Advanced Industrial Science and Technology (AIST), Kagamiyama 3-11-32, Higashi-Hiroshima, Hiroshima 739-0046, Japan

Abstract

We report covalently patterned graphene with acetic acid as a new potential candidate for graphene-enhanced Raman scattering (GERS). Rhodamine 6G molecules in direct contact with the covalently modified region show an enormous enhancement (∼25 times) compared to the pristine region at 532 nm excitation. The GERS enhancement with respect to the layer thickness of the probed molecule, excitation wavelength, and covalently attached groups is discussed.

Chemical Communications

A light-mediated covalently patterned graphene substrate for graphene-enhanced Raman scattering (GERS)†

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A light-mediated covalently patterned graphene substrate for graphene-enhanced Raman scattering (GERS)

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