| 학회 |
한국고분자학회 |
| 학술대회 |
2007년 가을 (10/11 ~ 10/12, 일산킨텍스) |
| 권호 |
32권 2호 |
| 발표분야 |
나노구조제어 및 분석기술 |
| 제목 |
Photo-Fries rearrangements in poly(acryl amide) thin films under UV irradiation monitored by FT-IR spectroscopy |
| 초록 |
Photo-Fries rearrangements of poly(acryl amide) thin films were studied by 1D and 2D FT-IR spectroscopy. The photoreaction was monitored by observing the change in spectral intensity of ester C=O stretching mode (1755cm-1) and amide NH bending mode (1510cm-1). The results showed that ester photo-Fries reaction is faster than amide in a polymer structure. It was also observed that the overall reaction rate increases with the inclusion of dimerizable cinnamide structures. Due to wavelength dependence of photo-Fries reaction, no significant reaction was detected by filtering deep UV in the light source. Because the reaction proceeds by radical intermediates, photo-oxidation and photo-crosslinking can occur. These polymers are capable of photo-alignment when exposed to polarized UV light. Using polarized infrared spectroscopy, the developed dichroisms after exposure to polarized UV were examined. |
| 저자 |
오성준, 오동현, 조정호, 김경준
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| 소속 |
LG화학 기술(연) |
| 키워드 |
FT-IR; UV; Photo-Fries; rearrangement
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| E-Mail |
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