| 학회 | 한국고분자학회 |
| 학술대회 | 2005년 가을 (10/13 ~ 10/14, 제주 ICC) |
| 권호 | 30권 2호 |
| 발표분야 | 기능성 고분자 |
| 제목 | Prototype reflective electrochromic display prepared by monodisperse viologen-modified polymeric microspheres |
| 초록 | The prototype reflective electrochromic display (R-ECD, Scheme 1) containing four pixel was fabricated, and their electro-optical properties were measured. In order to achieve a rapid response time and a good coloration efficiency of the R-ECD device, the alkyl chain length of viologen pendants, the content of functional groups, the size of microspheres and porous structure was applied referring our previous works. The 1-(1-bromo decyl)-1'-heptyl-4,4'-bipyridinium dibromide was synthesized, and monodisperse porous poly(styrene-co-acrylonitrile) microspheres were prepared. The size of microspheres was controlled using the medium solvency during the dispersion polymerization, and large content of acrylonitrile was incorporated in the second monomer mixtures. The monodispersity and morphology of microspheres were monitored utilizing an optical microscope (OM), and a scanning electron microscope (SEM). Electro-optical characteristics of the R-ECD were observed by TRF150 as shown in Scheme 2. Scheme 1. Cross-sectional view of the R-ECD device cell Scheme 2. Schematic diagram of TRF150 to measure the reflectance and response time. (ⓐ: LED, ⓑ: light detector, ⓒ: sample device) |
| 저자 | 박민수, 류지현, 서경도 |
| 소속 | 한양대 |
| 키워드 | R-ECD; seeded polymerization; viologen |
