POLYANILINES DOPED WITH PHOSPHONIC-ACIDS - THEIR PREPARATION AND CHARACTERIZATION
POLYANILINES DOPED WITH PHOSPHONIC-ACIDS - THEIR PREPARATION AND CHARACTERIZATION
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DOI：
10.1021/ma00086a027
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发表时间：
1994-04-11
期刊：
影响因子：
5.5
通讯作者：
HO, PKH
中科院分区：
文献类型：
--
作者：
CHAN, HSO;NG, SC;HO, PKH
用三种不同的磷酸R- pa (R = butyl (Bu), decyl （Dc), benzyl (Bn)）对聚苯胺（PANI）进行合成后处理，制备了热稳定性优于掺杂盐酸聚苯胺（PANI- hcl）的高导电性聚苯胺（PANI）。x射线光电子能谱（XPS）结果表明，样品基体中存在自由掺杂分子，掺杂物质在聚合物表面部分偏析，h30 +作为反电荷参与到这些样品中的掺杂阴离子中。红外（IR）数据表明，当Cl-被RPO2(OH)-取代时，PANI振动态的扰动最小。等温研究表明，聚苯胺- rpa的热稳定性远远优于聚苯胺-盐酸。热重分析表明，POH和NH在150℃以上发生缩合反应，形成交联结构，失去导电性。紫外可见光谱（UV-vis）密切跟踪了不同量的BnPA逐步掺杂聚苯胺碱的过程。
Highly conducting polyanilines (PANI) with thermal stabilities superior to that of polyaniline doped with hydrochloric acid (PANI-HCl) have been prepared by postsynthesis treatment of the PANI-base with three different phosphonic acids, R-PA, where R = butyl (Bu), decyl (Dc), and benzyl (Bn). X-ray photoelectron spectroscopy (XPS) results indicate the occurrence of free dopant molecules in the sample matrix, partial segregation of dopant species to the polymer surface, and participation of H3O+ as counter charges to some of the dopant anions in these samples. Infrared (IR) data suggest minimal perturbation of the PANI vibrational states when Cl- is replaced by RPO2(OH)-. Isothermal studies show the vastly superior thermal stabilities of the PANI-RPA over those of PANI-HCl. Thermogravimetric analysis has demonstrated a condensation reaction above 150-degrees-C among the POH and NH functions to give a cross-linked structure with loss of electrical conductivity. The stepwise doping process of PANI-base by different amounts of BnPA was followed closely by ultraviolet-visible spectroscopy (UV-vis).