초록 ▼

Iron-porphyrin 촉매를 core-shell 구조를 갖는 온도민감성 나노구에 배위결합시켜서 쉽게 회수할 수 있으며 온도 민감성이 있는 나노 촉매를 제조하였다. 평균 입자 크기는 470 nm 였고, 포르피린의 결합은 UV-VIS spectroscopy, fluorescenceactivated cell sorting (FACS), confocal laser scanning microscopy (CLSM), elctron paramagnetic resonance (EPR) spectometer 등으로 조사되었다. Scanning

Iron-porphyrin 촉매를 core-shell 구조를 갖는 온도민감성 나노구에 배위결합시켜서 쉽게 회수할 수 있으며 온도 민감성이 있는 나노 촉매를 제조하였다. 평균 입자 크기는 470 nm 였고, 포르피린의 결합은 UV-VIS spectroscopy, fluorescenceactivated cell sorting (FACS), confocal laser scanning microscopy (CLSM), elctron paramagnetic resonance (EPR) spectometer 등으로 조사되었다. Scanning electron microscopy (SEM) 형상은 철 포프피린이 결합한 core-shell 나노구가 구형이며, 균일함을 보여주었다. Cyclohexene의 산화 반응에서 cyclohexene epoxide가 주요 반응 생성물로 관찰되었고 반응은 온도에 민감했으며, 철 포르피린이 결합한 core-shell 나노 촉매는 원심분리에 의해서 쉽게 회수되었고 활성도는 3회 이상 유지되었다. 또한 졸-젤 전이 고분자의 분자 미케니즘을 Raman, FTIR, NMR, UV-VIS, Rheometer, Neutron Scattering, Differential scanning calorimeter 등으로 조사하여 고분자의 온도 민감성에 대한 이해를 증진시켰다. 본 과제에서 합성한 온도 민감성 고분자는 결정성을 갖는 polycaprolactone에 의해 만들어져 분말 형상이 되었다.

Abstract ▼

The iron porphyrin catalyst was bonded coordinately to the temperature sensitive nanosphere with core-shell structure to prepare the easily recoverable heterogeneous catalyst with temperature responsiveness. The average size of iron porphyrin bound core-shell nanosphere was 470 nm. Binding of the po

The iron porphyrin catalyst was bonded coordinately to the temperature sensitive nanosphere with core-shell structure to prepare the easily recoverable heterogeneous catalyst with temperature responsiveness. The average size of iron porphyrin bound core-shell nanosphere was 470 nm. Binding of the porphyrin was observed by the UV-VIS spectroscopy, fluorescence-activated cell sorting (FACS), confocal laser scanning microscopy (CLSM), and elctron paramagnetic resonance (EPR) spectometer. Scanning electron microscopy (SEM) images showed that iron porphyrin bound core-shell nanospheres were spherical and monodispersed. Under the current oxidation condition, the cyclohexene epoxide was a dominant product. Through this study, we found that the iron porphyrin bound core-shell nanosphere has the thermosensitivity, and the optimal reaction solvent composition of acetonitrile/ water. In addition, iron porphyrin bound core-shell nanosphere could be recovered by centrifugation and its activity was maintained more than the third cycle.
In addition, the molecular mechanism of sol-gel transition polymer aqueous solution was studied by several instrumental methods such as Raman, FTIR, NMR, UV-VIS, Rheometer, Neutron Scattering, and Differential scanning calorimeter to increase the understanding of the temperature sensitivity of a polymer. The biodegradable thermosensitive polymer with a lyophilizable powder form was developed using crystalline polycaprolactone.

목차 Contents

• I. 연구계획 요약문...3
• 1. 국문요약문...3
• II. 연구결과 요약문...4
• 1. 국문요약문...4
• 2. 영문요약문...5
• III. 연구내용...6
• 1. 서론...6
• 2. 연구방법 및 이론...16
• 3. 결론...64