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

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 (& SIM;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. We report covalently patterned graphene with acetic acid as a new potential candidate for graphene-enhanced Raman scattering (GERS) substrate.

Automated summary

In this study, we report the use of acetic acid as a new potential candidate for covalently patterned graphene in graphene-enhanced Raman scattering (GERS). Rhodamine 6G molecules in direct contact with the covalently modified region exhibit a tremendous enhancement (approximately 25 times) compared to the pristine region at 532 nm excitation. The influence of layer thickness, excitation wavelength, and covalently attached groups on the GERS enhancement is discussed.