本論文在化學氧化聚合反應系統中，以過硫酸胺為起始劑，於30℃下，氧化8-氨基喹啉(AQ)與苯胺-2-磺酸(AS)單體產生自由基以行共聚合反應。反應48小時後，以1M的氫氧化鈉或1M的氨水進行產物收集，探討所得AQAS共聚物之粒徑、光學特性、組成、結構、導電性及溶解性等，並觀察其自組裝行為。由傅立葉轉換紅外線光譜儀(FTIR)和超導核磁共振儀(1H NMR)分析高分子組成與共聚現象，並以元素分析儀(EA)佐證其共聚合之AQ：AS比例約為56：44，證實單體確實以共聚方式聚合並非個別自聚。利用光致發光光譜儀(PL)觀察光學性質，分析兩種高分子不同的發光特性；以紫外光/可見光光譜儀(UV-vis)討論有機溶劑與高分子之間的作用。一般溶劑其介電常數越高者，極化能力越佳，因此高介電常數溶劑會使高分子以緊縮的方式分佈於溶液中，而極性較小的溶劑提供熱力學上較穩定的分子鏈型態，藉此進一步探討高分子鏈上的共軛型態。以熱差分析儀(DTA)與熱重分析儀(TGA)探討單體與共聚物之間的分子結構差異，所製得之高分子明顯具有較優良的耐熱性以及不同於單體之斷裂放熱峰，間接證明共聚高分子的存在。本實驗將磺酸基與喹啉結構放入分子鏈中，目的為利用兩者之立體障礙與氧化還原位置設計出奈米尺寸之功能性高分子顆粒，由穿透式電子顯微鏡(TEM)分析顯示，所合成之AQAS高分子為直徑約20nm之球狀顆粒；原子力顯微鏡(AFM)顯示高分子有二次聚集的現象；以高解析度掃描式電子顯微鏡(SEM)得到高分子在以氫氧化鈉或氨水收集的情況下，其形態上會有不同的差異。由於AQAS具有共軛結構，以氫氧化鈉沉澱所得產品經四點式探針測量得知其導電度為1.896×10-4S/cm。最後，利用不同的有機溶劑測試高分子之加工性，可知所得高分子共聚物具有良好的溶解度。

An unique strategy for synthesis of narrowly distributed and inherently self-stabilized copolymer nanoparticles by a simple emulsifier-free polymerization from 8-aminoquinoline (AQ) and aniline-2-sulfonic(AS) acid was developed. The oxidative polymerization of AQAS copolymer nanoparticles was carried out with ammonium persulfate as an oxidant in HCl solution at 30℃ for 48 h. The solution was then neutralized by 1M NaOH or 1M NH4OH. The purpose of using two different bases was to verify the effect of salt formation on the property of copolymer. Also, the particle size, optical property, molecular structure, morphology, electrical conductivity, and solubility of the nanoparticles were investigated. From the data of IR and 1H NMR it was revealed that the AQAS copolymer synthesized was not a simple physical blend, but a copolymer with alternating monomers of AQ and AS present in the polymer chain. The ratio of the monomers in the repeat unit on copolymer chain was 56:44 (AQ:AS) which also could prove this copolymerization. Optical properties of the copolymer were studied by using analytical techniques such as PL and UV-Visible spectroscopy. It was observed that the copolymer showed different conformation such as chain and coil in various solvents which may be related to the dielectric constant of the solvent. Chain conformation was observed in solvent with less dielectric constant which revealed that the polymer was thermodynamically more stable in the less polar solvent as it contained very less polar groups and hence existed in the form of extended molecular chain. This theorem was extended to discuss the conjugated structure of copolymer. The polymer exhibited retardation phenomena on thermal degradation at high temperatures. In other words, the copolymer was relatively more thermally stable than its monomers. This data also supported the copolymerization indirectly. From the angle of polymer structure, the sulfonic acid group exhibited electron-withdrawing and the lone pair of electron on the AQ ring nitrogen made copolymer chain display positive charge. Both of stearic hindrances due to the sulfonic acid group in the chain and static rejection prevented the chains from being intertwined with each other in aqueous media and therefore kept the copolymer particles in nano-scale. The particle size was determined to be 20 nm by TEM. A detailed AFM study further revealed the size and shape of the copolymer. In particular, the nanoparticles appeared to be of larger size as compared to what was seen in TEM which may be due to aggregation of smaller particles by physical force to form a secondary particle. The morphologies of the copolymer neutralized by NaOH or NH4OH were investigated with SEM. It showed that the nanospheres of copolymer rearranged to form rod like structure for both cases. It was observed that the copolymer neutralized by NaOH exhibited electrical semi-conductivity with the conductivity found to be 1.896×10-4S/cm. The solubility of the above synthesized copolymer was examined carefully in eleven solvents with different polarity indexes. It could be seen that the solubility of the copolymer was very high in solvent whose polarity lies in between the extremes of the polarity index due to the presence of sulfonic acid group and hydrophobic polymer chain.

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