• 한국진공학회:학술대회논문집
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• 한국진공학회 2014년도 제46회 동계 정기학술대회 초록집
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• pp.198.1-198.1
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• 2014

Many efforts have been devoted on chemical modification of graphene layer to modulate its electrical properties. In the previous report, laser irradiation on the CYTOP(perfluoropolymer) doped graphene layer induces chemical modification of it, resulting in the insulating I-V characteristics. While the results strongly denoted C-F bond formation after irradiation, the detailed process of photo-induced chemical change is not known yet. To probe this, we utilized synchrotron based SPEM (scanning photoelectron emission spectroscopy) in NSRRC, Taiwan. We irradiate the sample by photon of 614 eV in a stepwise manner as a function of time. As photon irradiation increased, difluoride moieties in the CYTOP was broken, and then formed mono-fluoride with carbon atoms consisting graphene layer.

• 대한화학회지
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• 제13권1호
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• pp.68-74
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• 1969

${\alpha},{\beta$}-dichloro-${\beta$}-phenyl propionate, Ethyl ${\alpha},{\beta$}-dibromo-${\beta$}-phenyl propionate, Etyyl ${\alpha},{\beta$}-dichloro-${\beta$}-(p-chlorophenyl)propionate, 및 dibromo-styrene 等의 化合物을 各種溶媒(dimethly formamide, diethylene glycol, 및 diethylene glyco monomethyl ether 等) 存在下에서 弗化反應을 시켜 보았으며 放射性弗素-18을 追跡子로 使用하여서 위의 化合物들의 弗化카리에 對한 反應度를 檢査하여 보았다. 一般的으로 弗化反應 生成物은 모노弗化物과 脫할로겐된 二重結合物을 生成하였다. diethylglycol 存在下에서 高溫反應시킨 條件下에서는 二重結合生成物이 많았고 diethylene glyco-monoethyl ether 存在下에서 低溫反應시킨 條件下에서는 弗化物이 多量生成하였다. 모노弗化物의 合成方式 및 確認方法에 關하여 說明하였으며 本反應의 合成上의 用途($F^{18}$ 標識化合物包含)에 言及하였다.