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Synthesis ,Characterization ,and Electrical Conductivity of Polyaniline Derivatives ;Study with the Metal Ions Cu(II),Ni(II),and Co(II)

机译:聚苯胺衍生物的合成,表征及电导率;金属离子​​Cu(II),Ni(II)和Co(II)的研究

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摘要

Poly(2-aminophenol), Poly(3-aminophenol),poly(2-aminobenzyl alcohol),and poly(3-aminobenzyl alcohol) were synthesized by using ammonium persulphate as oxidizing reagent in HCl and HCl/CH_3CN mediums in the presence and absence of Cu(II),Ni(II),and Co(II) ions .The polymers were characterized by Fourier transform infrared spectroscopy,ultraviolet-vis spectroscopy,thermal analysis,and electrical conductivity measurements.The substituent in 2-and 3-positions decreases the yield regarding aniline.Poly(2,3-aminobenzyl alcohol) are obtained in an intermediate redox state and polymerized as aniline .On the contrary,poly(aminophenols) are obtained as overoxidated structures.The presence of metal ion produces an important increase of the polymerization yield .The metal cations would act as oxidizing agents .The incorporation of these metal ions depends on the reaction medium .The metal ion increases the thermal stability.poly(2-aminobenzyl alcohol)-copper ions also increases the electrical conductivity.The electrical conductivity is higher by acid doping than by the incorporation of metal ions.
机译:在HCl和HCl / CH_3CN介质中,以过硫酸铵为氧化剂合成聚(2-氨基苯酚),聚(3-氨基苯酚),聚(2-氨基苄醇)和聚(3-氨基苄醇)。不存在Cu(II),Ni(II)和Co(II)离子。通过傅里叶变换红外光谱,紫外可见光谱,热分析和电导率测量对聚合物进行表征。2和3中的取代基位置会降低苯胺的收率。以中间氧化还原态获得聚(2,3-氨基苄醇)并聚合为苯胺。相反,聚(氨基酚)则以过氧化结构形式获得。金属离子的存在产生了重要的金属阳离子将作为氧化剂。这些金属离子的加入取决于反应介质。金属离子增加了热稳定性。聚(2-氨基苄醇)-铜离子也增加了电导率酸掺杂比引入金属离子具有更高的电导率。

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