目前常見的自摻雜聚苯胺有磺酸根、硼酸根及羧酸根等，膦酸根卻少有人研究，而膦酸作為自摻雜聚苯胺的質子酸部份，不僅擁有足夠的酸度，同時是一個二元酸根，第一酸根用於內部摻雜，而未用於摻雜的第二酸根能夠用來提供特徵，過去己有研究團隊發表了以自帶膦酸根的聚苯胺研究報告，他們所使用的材料在後續分析中，表現出了良好的熱穩定性、高透明性，並且有極化子離域現象及自摻雜的效應，但目前尚未有完善的研究成果，仍在期待未來的性質改善及發展可用性。
故本研究中嘗試使用自帶膦酸根之苯胺—3-胺基苯基膦酸作為實驗單體，利用各種實驗參數將單體以化學氧化法聚合，並對其表面形態、分子結構、氧化/還原程度及質子化程度作分析探討，透過紫外光-可見光光譜及傅里葉轉換紅外光光譜可證明聚3-胺基苯基膦酸具有相似聚苯胺的高分子主鏈，而透過起始劑的摻雜，使聚合物在微結構上形成多孔形態，對於應用於質子交換材料，提高孔隙率可有效的增加表面積及傳導路徑。此外，摻雜起始劑可有效的增加聚合物的極化子離域及質子化程度，與未摻雜起始劑的結果相比，質子化程度從20.26-37.64(%)提升至44.04-72.37 (%)(氧化劑-過硫酸銨APS)；12.34-14.43(%)提升至14.05-19.35(%)(氧化劑-過硫酸鉀K2S2O8)；1.60-16.02(%)提升至10.57-30.26(%)(氧化劑-過氧化氫H2O2)。透過氧化劑旳選擇可控制聚合物的氧化/還原程度，當使用過硫酸鉀K2S2O8作為氧化劑時，其平均氧化/還原程度約1.54具有相對高的氧化程度，而過氧化氫H2O2約0.61具有較高的還原程度，不過無論使用何種氧化劑，產物皆具有結合能約401eV的-N+-質子化結構；最後，在實驗中發現聚3-胺基苯基膦酸具有自旋電子離域的特性，當使用對苯二胺AP作為起始劑時，A/B ratio趨近於1具有最佳的電子自旋對稱性，並且有高度的電子離域現象。由於化學結構中酸根官能基對聚苯胺主鏈的相互作用使得聚合物不導電，以目前的實驗結果，聚3-胺基苯基膦酸為不導電之多孔材料，而透過文獻可知膦酸官能基可用作提供質子及承接質子，因此具有質子傳導性，故聚3-胺基苯基膦酸可望成為質子交換材料或有機自旋電子材料。

At present, the self-doped polyaniline bear sulfonic, boronic and carboxylic groups, but bearing phosphonic group is rare in the study. The phosphonic acid functional group as the protonic acid radical of the self-doped polyanilines, it does not only show enough acidity for doping but also is a dibasic acid. The first acid radical is used to internal-doping in the polyaniline backbone, and the second acid radical would provide features, such as forming salt while keeping the doping state. In 2014, the Japanese study teams reported the studies of the self-doped polyaniline bearing phosphonic acid. The materials they used in the subsequent analysis showed good thermal stability, high transparency, polaron delocalization and self-doped effects. But there are not perfect studies in bearing phosphonic acid polyaniline area, therefore, there is still looking forward to improving performance and developing usability in the future.
In this study, we try to use bearing phosphonic acid aniline (3-aminophenyl phosphonic acid) as the monomer and use the chemical oxidative polymerization with the various experimental parameters. Then, analyze the surface morphology, molecular structure, redox level and protonation level. Proved via UV-visible spectra and FTIR spectra, poly(3-aminophenyl) phosphonic acid similar to polyaniline backbone. The polymers can form the porous structure in the morphology by adding the initiator. For the proton exchange materials, increasing the surface area can effectively increase the proton transfer pathways. In addition, adding the initiator increase the degree of spins delocalization and protonation level effectively. The degree of protonation level increased from 20.26-37.64 (%) to 44.04-72.37 (%) (The oxidant is APS), 12.34-14.43 (%) increased to 14.05-19.35 (%) (The oxidant is K2S2O8) and 1.60-16.02 (%) increased to 10.57-30.26 (%) (The oxidant is H2O2). The redox level of the poly(3-aminophenyl phosphonic acid) can be controlled by the choice of oxidant. When using K2S2O8 as the oxidant, the average redox level is about 1.54, that is a relatively high level of oxidation. Whereas H2O2 is about 0.61, that is a high level of reduction. However, regardless of which oxidant is used, the polymers all have -N+- protonated structures, the binding energy ~401eV. Finally, the experiment progress found that poly3-aminophenyl phosphonic acid has spins delocalization effect. When using AP as the initiator, the A/B ratio tends to 1 have an optimum spin symmetry and a high degree of electron delocalization. Poly(3-aminophenyl phosphonic acid) is non-conductive, due to the acid group of the chemical structure has an interaction with the polyaniline backbone. Based on the current experimental results, poly(3-aminophenyl phosphonic acid) is a porous material that does not have electron conductivity. It can be known from the literatures that the phosphonic acid functional group can serve as the proton-donating and proton-accepting, so the polymer is proton conductivity. Therefore, it is expected to become a proton exchange material or an organic spintronic material.

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