| 학회 |
한국공업화학회 |
| 학술대회 |
2022년 봄 (05/11 ~ 05/13, 제주국제컨벤션센터(ICC JEJU)) |
| 권호 |
26권 1호 |
| 발표분야 |
포스터-정밀화학 |
| 제목 |
Highly reflective 1D photonic crystal sensors using photo-crosslinked polymer–titania hybrid layers for colorimetric visualization of benzene, toluene, and xylene |
| 초록 |
In this study, we propose a facile method for fabricating highly reflective one-dimensional photonic crystals (1D PC) sensors, which exhibit a large refractive index difference (Δn) between the high-refractive index layers (HRILs) and low-refractive index layers (LRILs) when immersed in the liquid analyte. A photo-crosslinked copolymer–titania hybrid as the HRIL (Ti70) and a photo-crosslinked polystyrene-based LRIL (P(St-co-BPA)) were synthesized and used to fabricate the 1D PC sensor (Ti70/P(St-co-BPA) 4N). Its sensing performance was verified in liquid benzene, toluene, and xylene (BTX). Initially, Ti70/P(St-co-BPA) 4N reflected a blue color (R = 55%), which immediately changed upon immersion in BTX into three different colors: red in benzene (R = 48%), orange in toluene (R = 41%), and yellow–green in xylene (R = 43%) within 1.0 s. In addition, the reversibility and recyclability of the 1D PC sensor were verified through repeated swelling and de-swelling cycles. |
| 저자 |
황태규1, 정민주1, 박종남2, 정유진1, 박종목1
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| 소속 |
1한국화학(연), 2UNIST |
| 키워드 |
1D photonic crystal; BTX sensor; large refractive index difference; reflectance; organic-inorganic hybrid
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| E-Mail |
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