| 학회 |
한국고분자학회 |
| 학술대회 |
2012년 봄 (04/12 ~ 04/13, 대전컨벤션센터) |
| 권호 |
37권 1호 |
| 발표분야 |
대학원생 구두발표(영어발표) |
| 제목 |
Photoresponsive Block Copolymer Photonic Gels with Widely Tunable Photosensitivity by Counter-ions : Towards Application in UV A sensors |
| 초록 |
Polyelectrolyte hydrogels exhibit unique stimuli responsive physical properties.The photonic crystals comprising hydrogels exhibit unique tunable photonic band gaps in response to the various stimuli including pH, ionic strength and electric field.We report photoresponsive block copolymer photonic gel films exhibiting strong reflective multi-colors in the visible regime in response to near-UV radiation.The photonic gels showed strong shift of photonic stop bands in response to the exposure of UV and their controllable photosensitivity by counter-anions.We found that our photonic gels are highly sensitive to UVA (λ=320~400nm),which is considered as a strong skin carcinogen.We anticipated that our findings are useful for understanding the volume transition of polyelectrolyte hydrogels by photocrosslinking. Especially, tunable photosensitivity by simple ion-exchange are promising for the colorimetric UV radiation sensors. |
| 저자 |
안유신, 현진호, 임현민, 정재연, 강영종
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| 소속 |
한양대 |
| 키워드 |
Photonic Crystal; Hydrogel; Photocrosslinking; Counter-ion; Tunable Photosensitivity; UV sensors
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| E-Mail |
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