| 학회 |
한국공업화학회 |
| 학술대회 |
2015년 가을 (11/04 ~ 11/06, 제주국제컨벤션센터(ICCJEJU)) |
| 권호 |
19권 2호 |
| 발표분야 |
고분자_포스터 |
| 제목 |
Colorimetric Nanosensor based on Block Copolymer-Integrated Graphene Quantum Dots for Simultaneous Detecting Temperature, pH, and Metal Ions |
| 초록 |
We developed a novel and versatile platform for highly-efficient, colorimetric multi-functional sensors using block copolymer-integrated graphene quantum dots (bcp-GQDs). In particular, the multi-functional sensing behavior is successfully generated simply by grafting blue emitting, temperature-responsive block copolymers onto green-emitting, 10-nm sized GQD with the GQD providing luminescent response to pH changes. Thus, the bcp-GQDs showed simultaneous, orthogonal sensing behavior to temperature and pH, as well as dose-dependent responses to different types of metal ions. In addition, the bcp-GQD sensor showed excellent reversibility and dispersion stability in pure water, indicating that our system is an ideal platform for environmental and biological applications. The detailed mechanism of the responsive behavior of the bcp-GQDs was elucidated by measurements of time-resolved fluorescence and dynamic light scattering. |
| 저자 |
김범준1, Kin Liao2, 이준혁1, 양현승1, 박찬호1
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| 소속 |
1한국과학기술원, 2kalipa Univ. |
| 키워드 |
block copolymer; fluorescent sensing; graphene quantum dot
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| E-Mail |
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