| 학회 |
한국고분자학회 |
| 학술대회 |
2022년 봄 (04/06 ~ 04/08, 대전컨벤션센터) |
| 권호 |
47권 1호 |
| 발표분야 |
대학원생 구두발표(토론III): 자극응답성/자가변환성 콜로이드 및 분자소재 연구 |
| 제목 |
Design of Self-Reporting Liquid Crystals for Food Poisoning Bacteria |
| 초록 |
Sensitive and selective detection of salmonella that causes food-borne diseases is necessary for food safety and prevention of pathogenic infection. However, previous methods require laborious and time consuming process. Here, we offer simple approach to realize rapid detection of food poisoning bacteria (salmonella) by integrating extraordinary sensitivity of liquid crystals (LCs) and selectivity of organic ionics (OIs). Specifically, self-assembled OI at the aqueous interface of LC film cause vertical LC ordering. Under the incubation of LC in the aqueous solution with tryptone, however, we observe the formation and growth of birefringent domains after ~1.5 hours. Surprisingly, we observe the presence of salmonella to facilitate the formation of domains, which is dependent on salmonella population. We demonstrated the OI-LC system enables rapid detection of target bacteria within 20 min without any complex procedure. This work was supported by NRF2021R1A4A1030944&2021R1A2C2095010 |
| 저자 |
최예나1, 최진강2, 김원식2, 손창윤2, 이민재3, 김영기2
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| 소속 |
1POSTECH, 2포항공과대, 3군산대 |
| 키워드 |
액정; 유기이온; 살모넬라; 센서
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| E-Mail |
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