Kwon, Yoo-Bin Cho, Se Youn Jang, Hongje Kim, Jae-Ho Kim, Young-Kwan 2024-01-19T13:03:09Z 2024-01-19T13:03:09Z 2022-04-03 2021-12-07 0743-7463 https://pubs.kist.re.kr/handle/201004/115939 The lateral size effect of graphene oxide (GO) on surfaced-enhanced Raman scattering (SERS) property is systematically investigated by using size-fractionalized GO. For the size fractionalization without changes of chemical structure, large-sized GO (LGO) and small-sized GO (SGO) are separated from the as-synthesized GO (AGO) by centrifugation and membrane filtration, respectively. The size-fractionalized GO sheets are immobilized on a solid substrate for the parallel comparison of their SERS property. As a result, we find that LGO shows considerably higher SERS property than SGO for typical Raman probes such as rhodamine 6G and crystal violet. Furthermore, the lateral size effect of GO derivatives is consistently observed when they are hybridized with plasmonic silver nanoparticles. These results indicate that LGO is superior to AGO and SGO as a SERS platform, and it is also quantitatively confirmed by calculating their enhancement factor. English AMER CHEMICAL SOC PLATFORM SERS SHEETS FILMS FRAGMENTATION FLUORESCENCE SUBSTRATE Lateral Size Effect of Graphene Oxide on Its Surface-Enhanced Raman Scattering Property Article 10.1021/acs.langmuir.1c02670 1 LANGMUIR, v.37, no.48, pp.14205 - 14213 LANGMUIR 37 48 14205 14213 scie scopus 000749668100026 2-s2.0-85120375739 Chemistry, Multidisciplinary Chemistry, Physical Materials Science, Multidisciplinary Chemistry Materials Science Article PLATFORM SERS SHEETS FILMS FRAGMENTATION FLUORESCENCE SUBSTRATE