| 세션명 | 대학원생 구두발표 (I) |
|---|---|
| 발표장 | 제10회장 |
| 논문코드 | O10-3 |
| 발표일 | 2024-04-3 |
| 발표시간 | 13:30-13:45 |
| 논문제목 | Selective Optical Response based on Liquid Crystals with Organic Ionics |
| 발표자 | 최진강 |
| 발표자 소속 | 포항공과대학교 |
| 저자 | 최진강, 최예나, 김원식, 이민재1, 손창윤, 김영기† |
| 소속 | 포항공과대학교; 1군산대학교 |
| 논문초록 | Liquid crystals (LCs) have amplification property due to their anisotropic nature and long-range molecular ordering. Therefore, LCs have been utilized for reporting a variety of chemical stimuli. However, the low selectivity was pointed out as a problem. Here we suggest general design rules to control selectivity and sensitivity by decorating the interface with organic ionics (OIs). OI-LC film optically reports acetic acid at 1 ppm. LC molecule electrostatically and physically interacts with OI causing vertical orientation of the LC molecule. In the exposure of acetic acid, however, carboxylic group of OI interrupts the existing interaction, changing LC orientation. Furthermore, their characteristics are controllable by modulating the carbon chain length and type of counter ion in OIs. Exploiting the strategies, we achieved high selectivity that can distinguish even one carbon chain length of target chemical. This work was supported by the NRF (RS-2023-00302586 and RS-2023-00212739). |
THE POLYMER SOCIETY OF KOREA