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)

Chem Commun (Camb). 2023 Sep 21;59(76):11417-11420. doi: 10.1039/d3cc03304j.

Authors

Guilin Feng¹, Nozomu Suzuki², Qiang Zhang¹, Jiangtao Li¹, Tomoko Inose³, Farsai Taemaitree^{1

4}, Muhammed Shameem K M⁵, Shuichi Toyouchi^{5

6}, Yasuhiko Fujita⁷, Kenji Hirai¹, Hiroshi Uji-I^{1

3

5}

Affiliations

¹ 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. hiroshi.ujii@kuleuven.be.
² Department of Chemical Science and Engineering, Graduate School of Engineering, Kobe University, Rokko, Nada, Kobe 657-8501, Japan.
³ Institute for Integrated Cell-Material Science (WPI-iCeMS), Kyoto University, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan.
⁴ Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University, 2-1-1 Katahira, Aoba-Ward, Sendai 980-8577, Japan.
⁵ Department of Chemistry, Division of Molecular Imaging and Photonics, KU Leuven, Celestijnenlaan 200F, Leuven B-3001, Belgium.
⁶ Research Institute for Light-induced Acceleration System (RILACS), Osaka Metropolitan University, Sakai, Osaka 599-8570, Japan.
⁷ Research Institute for Sustainable Chemistry, National Institute of Advanced Industrial Science and Technology (AIST), Kagamiyama 3-11-32, Higashi-Hiroshima, Hiroshima 739-0046, Japan.

PMID: 37671408
DOI: 10.1039/d3cc03304j

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.