| 학회 |
한국고분자학회 |
| 학술대회 |
2008년 봄 (04/10 ~ 04/11, 컨벤션 뷰로(대전)) |
| 권호 |
33권 1호 |
| 발표분야 |
기능성 고분자 |
| 제목 |
pH Sensitive Polymeric Sensor Using Fluorescence Quenching by Gold Nanoparticles |
| 초록 |
Gold nanoparticle has been of great interest over the past decade because of its unique properties and potential application such as biochemical sensor. In this work, a potent polymeric pH sensor is synthesized by using the optical property of gold nanoparticle as a fluorescence quencher. For this purpose, a gold nanoparticle is attached to the one end of pH-sensitive polymer chain and a pyrene molecule is linked to the other end. pH-responsive polymer is synthesized by ATRP using sulfadimethoxine monomer whose pKa is 6.1. Hence, the fluorescence emitted from pyrene is quenched below its pKa as the polymeric backbone is shrunk while the fluorescence survives above its pKa. This optical change is observed as a function of pH. |
| 저자 |
홍석환1, 홍성우2, 조원호1
|
| 소속 |
1서울대, 2Univ. of Massachusetts Amherst |
| 키워드 |
nanoparticle; pH; biosensor; gold; quenching; energy transfer
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| E-Mail |
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