合成及鑑定含茀､炔與苯為單位之芳香環共軛的螢光材料

Abstract

本實驗主要是以Sonogashira reaction合成出， PFBOC8、PFOC12 、PFOPI1000之含茀和苯共軛環的螢光材料。在熱性質方面，以熱重分析儀(TGA)得知熱裂解溫度(Td)為430 ~431℃。由DSC及POM對液晶相之鑑定，可以看出這系列化合物中，無液晶的現象存在。化合物的螢光性質則由紫外光可見光光譜儀（UV-Vis）和螢光分光光譜儀測得，化合物在極稀(10-5M)的THF溶劑中所得到的最大吸收波長範圍為363~376nm;最大螢光（PL）放射波長為416~442nm和363 ~369nm，量子效率為53％∼70％。循環伏安法(CV)測得不可逆氧化電位，得知本系列化合物本系列化合物僅能測得irreversible氧化電位，經由計算， HOMO位於5.30 eV ~ 5.82 eV。

An aromatic conjugated ring molecule containing fluorene and ethynylene, and phenyl group were synthesized successfully via Sonogashira coupling reaction. The thermal properties of these materials were measured by TGA. The decomposition temperature at 5% weight loss (Td) of all compounds ranged from 430 ~431 oC. DSC and POM claimed that all compounds have no mesogenic phase. The optical properties of these materials were measured by UV-Vis and PL (photoluminescence) spectroscopic studies. These compounds exhibited maximum absorption in the range of 363~376nm in diluted THF. They emitted blue fluorescence around 416~442nm and 363 ~369nm in THF. The quantum efficiency of them were ranged from 53%~70%. The CV showed that the HOMO of these compounds were located at 5.30 eV ~ 5.82 eV respectively.