| 학회 |
한국화학공학회 |
| 학술대회 |
2017년 가을 (10/25 ~ 10/27, 대전컨벤션센터) |
| 권호 |
23권 2호, p.2400 |
| 발표분야 |
[특별 심포지엄](한국화학공학회-대만화학공학회 공동 국제 심포지엄(국제화 국제협력위원회) |
| 제목 |
Fluorescent Electrospun Nanofibers for Metal-ion Sensing applications |
| 초록 |
A series of sensing nanofibers has been successfully prepared by electrospinning of random copolymers containing fluorescence-sensing moieties. These copolymers were synthesized by free radical copolymerization of three monomers, thermo-responsive NIPAAm, chemically crosslinkable NMA and fluorescence-sensing monomers. The copolymers showed highly selective and sensitive recognition and displayed “ON-OFF” fluorescence toward metal ions both in solution and in solid state (thin films and nanofibers). From the quantitative analysis via Stern-Volmer plots, nanofibers exhibited comparable Stern-Volmer constants as those of solutions in the order of 104 M-1, which are much higher than those of thin films. The enhanced sensitivity of electrospun nanofibers is attributed to their higher surface area compared to dip-coating films. The nanofibers also exhibited an on/off switchable sensing behaviour in response to temperature change due to the hydrophilic-hydrophobic transition of PNIPAAm. In addition, the binding of metal ions is chemically reversible both in solution and in nanofibers with the treatment of Na4EDTA. |
| 저자 |
Wen-Chung Wu1, Hsiao-Jen Lai2
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| 소속 |
1Department of Chemical Engineering, 2National Cheng Kung Univ. |
| 키워드 |
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| E-Mail |
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| VOD |
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| 원문파일 |
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