| 학회 |
한국공업화학회 |
| 학술대회 |
2015년 봄 (04/29 ~ 05/01, BEXCO (부산)) |
| 권호 |
19권 1호 |
| 발표분야 |
고분자_포스터 |
| 제목 |
Novel Colorimetric, Multi-functional Sensing Platform Based on Block Copolymer-Integrated Graphene Quantum Dots |
| 초록 |
A colorimetric multi-functional sensing platform is develpoed by grafting block copolymers from graphene quantum dots (GQDs). In our system, GQD cores were coated with fluorescent, thermally-responsive poly(7-(4-(acryloyloxy)butoxy)coumarin)-b-poly(N-isopropylacrylamide) (P7AC-b-PNIPAAm) block copolymers. The colorimetric sensing response to temperature change was generated by Förster resonance energy transfer between green-emitting GQDs and blue-emitting coumarins in the P7AC block, which was controlled through the manipulation of the PNIPAAm chain confirmation that responds to temperature changes. In addition, the functional groups on the controlled surface of the GQD core provided the block copolymer coated GQDs with quantitative, colorimetric switching behavior in response to pH as well as different types of metal ions. The detail mechanism of responsive behavior of the GQD sensors was investigated using time-resolved photoluminescence, dynamic light scattering and microscopy measurements. |
| 저자 |
박찬호1, 양현승1, 이준혁1, 조한희1, 김다흰1, 이도창1, Kin Liao2, 김범준1
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| 소속 |
1한국과학기술원, 2Khalifa Univ. |
| 키워드 |
graphene quantum dots; stimuli-responsive polymer; block copolymer; FRET; multiplex sensor
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| E-Mail |
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