Nanostructures obtained in the oxidative polymerization of aniline: Effects of polarons

被引：17

作者：

Zujovic, Zoran D. ^{[1
,3
]}

Nieuwoudt, Michel ^{[2
]}

Bowmaker, Graham A. ^{[3
]}

Kilmartin, Paul A. ^{[3
]}

机构：

[1] Victoria Univ Wellington, MacDiarmid Inst Adv Mat & Nanotechnol, Wellington 6140, New Zealand

[2] Univ Auckland, Sch Chem Sci, Auckland 1, New Zealand

[3] Univ Auckland, Sch Chem Sci, Polymer Elect Res Ctr, Auckland 1, New Zealand

来源：

POLYMER | 2013年 / 54卷 / 23期

关键词：

Polyaniline; Self-assembly; Polarons; POLYANILINE NANOSTRUCTURE; NANOTUBES; EVOLUTION; GROWTH;

D O I：

10.1016/j.polymer.2013.09.020

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Effects of polarons on the single (NH4OH) and double (NH4OH + LiOH) dedoped nanostructured products obtained in the oxidative polymerization of aniline are investigated. These effects are probed by N-15 and C-13 solid-state NMR, FTIR, Raman and EPR spectroscopy. The morphologies were imaged using scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The micrographs confirmed the presence of mixed morphologies which include granular and nanotubular products. Single dedoping with NH4OH (SD) was not sufficient to completely remove positive charges. Subsequent dedoping with LiOH (DD) significantly removed positive charges. NMR experiments confirmed that the imine part of the structure has been more exposed to the effects of polarons. EPR data showed that the spin concentration in the DD samples was more than an order of magnitude lower that of the SD sample. The FTIR and Raman spectra exhibit characteristic bands for polyaniline and oligoanilines. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：6363 / 6372

页数：10

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