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首页> 外文期刊>Journal of Applied Polymer Science >Chemical synthesis and characterization of some conducting polyaniline derivatives: Investigation of the effect of protonation medium
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Chemical synthesis and characterization of some conducting polyaniline derivatives: Investigation of the effect of protonation medium

机译：某些导电聚苯胺衍生物的化学合成和表征：质子化介质作用的研究

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Poly(o-toluidine) (POT) and poly(2-chloroaniline) (P2ClAn) emeraldine salts were synthesized chemically by using formic (HCOOH), acetic (CH3COOH), propionic (C2H5COOH), and boric (H3BO3) acids. Ultraviolet-visible absorption spectra (UV-Vis) analysis results indicated that POT has the better protonation effects than P2ClAn. Among the POTS synthesized using the four different acids, POT(H3BO3) showed the least protonation effect. The conductivities of prepared polymers were measured by a four-probe technique. The highest conductivities were obtained in POTS synthesized by using formic, acetic, and propionic acids. Magnetic susceptibility measurements of the polymer salts were analyzed by using Gouy scale and it was found that POT(CH3COOH) and POT(C2H5COOH) salts are of bipolaron structure; other polymer salts are of polaron structure. The characterization of the polymers were investigated by Fourier infrared spectroscopy (FTIR), UV-Vis, thermogravimetric analysis, and scanning electron microscopy. It was observed from UV-Vis spectra of the emeraldine salt of POT that wavelengths belonging to pi-->pi* transitions shifted to shorter wavelengths with increasing pKa values of acids. POT and P2ClAn synthesized in faun different protonation media decomposed with three-step and three- or two-step weight loss, respectively. (C) 2002 Whey Periodicals, Inc. [References: 33]
机译：通过使用甲酸（HCOOH），乙酸（CH3COOH），丙酸（C2H5COOH）和硼酸（H3BO3）化学合成聚（邻甲苯胺）（POT）和聚（2-氯苯胺）（P2ClAn）翡翠盐。紫外-可见吸收光谱（UV-Vis）分析结果表明，POT的质子化效果优于P2ClAn。在使用四种不同酸合成的POTS中，POT（H3BO3）的质子化作用最小。通过四探针技术测量制备的聚合物的电导率。在使用甲酸，乙酸和丙酸合成的POTS中，电导率最高。用Gouy标度法分析了聚合物盐的磁化率，发现POT（CH3COOH）和POT（C2H5COOH）盐为双极化子结构。其他聚合物盐具有极化子结构。聚合物的表征通过傅立叶红外光谱（FTIR），UV-Vis，热重分析和扫描电子显微镜进行了研究。从POT的翡翠盐的UV-Vis光谱中观察到，随着酸的pKa值增加，属于pi-> pi *跃迁的波长移至较短的波长。在不同质子化介质中合成的POT和P2ClAn分别分解了三步和三步或两步失重。 （C）2002 Whey Periodicals，Inc. [参考：33]

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