B溶劑及其衍生物因其特殊的化學活性而受到廣泛關注，其可用為重要的香料、醫藥及農藥中間體等，此溶劑可應用為製造有機場效電晶體的有機溶液，應用而用B溶劑將特殊高分子溶解蒸鍍或是塗佈時，不可避免地會導入溶劑與高分子中的不純物，使有機場效電晶體對於電壓控制電子元件的表現變差，因此，進一步瞭解不純物成分組成、生成速率、雜質去除的程序以及長期穩定的保存方法，此對於有機場效電晶體的產品良率有重要的影響，此部分即為本研究的重點。
本研究以氣相層析儀-火焰離子化偵檢器、氣相層析儀-質譜偵檢器、紫外光可見光吸收光譜儀以及離子層析儀分析雜質組成與生成速率，以加熱與曝光兩種方式分別探討B溶劑的熱變質與光催化反應，並探討其暴露環境對於不純物生成速率，以建立出合適的保存方法。研究中發現，以氮氣導入至B溶劑可以有效的隔離外界的空氣與水氣，進而達到減緩B溶劑變質的效果。在有機不純物部分，使用二氧化矽管柱純化B溶劑，可去除90%以上之不純物，而應用大孔型陰離子交換樹脂管柱可以有效減少B溶劑中之陰離子濃度，在高濃度或低濃度之陰離子含量都可去除至偵測極限以下(20 ppb)，並進一步研究在應用離子層析儀中分析有機物質中離子的方法，並確認分析方法的可信度，成功地找出合適的分析方法。

Solvent B and its synthetic derivatives have been playing attention due to their distinct pharmaceutical activities and broad applications in synthetic perfumes and flavors. Solvent B is also applied as an effective solvent for the dissolution of polymer, which is used in the organic thin film transistors (OTFT) process. The impurities from solvent and polymer will be conducted into OTFT devices via spin coating and vapor deposition processes. It causes the shortening of lifetime and yield rate of OTFT device due to a shift in threshold voltage, hysteresis phenomenon, and so on. Therefore, this work focused on the analysis of impurity, yield rate of impurity, procedure for impurity removal, and storage method.
In this work, the gas chromatography equipped with flame ionization detector (GC-FID), gas chromatography equipped with mass spectrometer (GC-MS), UV/VIS spectrophotometer (UV/Vis), and ion exchange chromatography (IC) were applied to analyze the composition of impurities and the yield rate of impurities. Effects of UV illumination and heat on the deterioration of Solvent B and yield rate of impurity were investigated under variant atmospheres. The results indicated the N2-purge procedure can hinder water and oxygen from entering Solvent B, resulting in the retardation in the yield of impurity. 90% of organic impurities were able to be adsorbed by the silica gel column. For the treatment of anion impurities, we use the macroporous ion exchange resins to reduce anions concentration of Solvent B, such as chloride, phosphate and sulphate, less than the detection limits of IC (20 ppb). The different analysis methods for determination of anions in organic materials were further developed successfully. The reliability and uncertainty of these methods were studied in detail.

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