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  • 09월 03일 23시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제122회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Reversible Switching Nanoscale Sensor for Real Time Tracking

2018년 8월 23일 16시 17분 27초
MAT.O-9 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
목 09시 : 56분
Material Chemisty - Oral Presentation of Young Material Chemists
저자 및
Myoungsoo Han, SeoYeah Oh, Jihyeon Park, Jiwon Kim*
School of Integrated Technology, Yonsei University, Korea
In order to accurately – selectively and sensitively – detect target material within a small space (e.g. blood vessel), a nanoscale sensor with high density integration is required. Nanomaterial is a good candidate since it has many detection sites in a localized space; however, reversible reaction between target material and detection sites are still rare with short response time. Herein, we designed nanoscale sensors via gold nanoparticles (AuNPs) functionalized with 11-mercaptoundecanoic acid (MUA) and N,N,N-trimethyl 11-mercaptoundecyl ammonium (TMA). MUA and TMA ligands (or mixed) functionalized AuNPs (MUA/TMA AuNPs) can change surface charges according to surrounding pH change which can be easily recorded in real time by ζ-potential (ca. 20 mV in acid condition of pH ~ 3.0 and ca. -30 mV in basic condition of pH ~ 11.0). For real time detection, dilution and separation models were designed in order to minimize accumulation of information particles around the sensor. As a result, we could develop reversible switching nanoscale sensor which can read out dynamic signals in real time giving us more accurate information and can possibly be applied in nanoscale communication systems.