| 학회 |
한국공업화학회 |
| 학술대회 |
2018년 가을 (10/31 ~ 11/02, 제주국제컨벤션센터(ICC JEJU)) |
| 권호 |
22권 2호 |
| 발표분야 |
정밀화학_포스터 |
| 제목 |
4-mercaptophenyl Boronic Acid-incorporated Silver Nanoparticles-embedded Silica-coated Graphene Oxide as a SERS Substrate |
| 초록 |
Silver nanoparticle-embedded silica-coated graphene oxide (GO@SiO2@Ag NPs) was successful prepared by coating GO with silica layer, following by depositing silver nanoparticles on the surface of GO@SiO2. Subsequently, 4-mercaptophenyl boronic acid (4-MPBA) was self-assembled on the surface of GO@SiO2@Ag. The intensity SERS for 4-MPBA on the GO@SiO2@Ag NPs was 2.2-fold as greater as that of GO@Ag NPs. In addition, the background signal of silica-coated GO was lower than GO. The SERS intensity of GO@SiO2@Ag NPs@MPBA was the strongest at 1 mM 4-MPBA and the highest SERS signal intensity was detected at pH 3 by the pH-dependent behavior of 4-MPBA on the GO@SiO2@Ag NPs. The SERS signals at both 1,072 and 1,588 cm-1 was increased due to the interaction of glucose to 4-MPBA-incorporated GO@SiO2@Ag NPs. This result provides possibility for glucose detection and the fabrication of SERS-based biosensors using graphene oxide. |
| 저자 |
강은지, Xuan-Hung Pham, 함은일, 김형모, 하유나, 전봉현
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| 소속 |
건국대 |
| 키워드 |
Glucose detection; Graphene oxide; Silica coating; SERS; Signal enhancement
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| E-Mail |
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