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Comparative Study of the Formation Mechanism of Polyaniline Nanorods and Nanotubes Through In Situ NMR Technique

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Abstract

The formation mechanism of nanostructured polyaniline (PANI) synthesized in a micelle-like system was studied by a series of in situ NMR experiments, including 1H NMR and CPMG. Depending on the signal evolution of the major species, the polymerization of polyaniline was divided into three continuous stages. At first, the neutral aniline molecules changed into anilinium, and the aniline dimer produced; and then, the consumption of aniline increased rapidly, the phenazine-like oligomers occurred and hydrated water increased, the micelles remained spherical; the different morphologies of polyaniline were formed by the fusion of spherical micelles in final. In combination with the evolution of the morphology which was characterized through TEM, the formation mechanism of nanostructured polyaniline was compared and analyzed.

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Acknowledgements

We would like to acknowledge the financial supports from the Natural Science Foundation of China (No. 51963021), the Natural Science Foundation of Guangxi (No. 2020GXNSFBA159035 and 2020GXNSFAA159126), Middle-aged and young teachers’ project Basic ability Promotion of Guangxi (No. 2021KY0589), the Science Foundation of Yulin Normal University (No. G2019ZK22), and Yulin Normal University Research Grant (No. 2019YJKY18).

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Authors and Affiliations

  1. Guangxi Key Laboratory of Agricultural Resources Chemistry and Biotechnology, Yulin Normal University, Yulin, 537000, People’s Republic of China

    Yiqi Jing, Rong Wang, Cancan Shi & Ruijuan Wang

  2. Nanjing University of Science and Technology, Nanjing, 210094, People’s Republic of China

    Ruijuan Wang

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  1. Yiqi Jing
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  2. Rong Wang
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Jing, Y., Wang, R., Shi, C. et al. Comparative Study of the Formation Mechanism of Polyaniline Nanorods and Nanotubes Through In Situ NMR Technique. Appl Magn Reson 52, 1581–1589 (2021). https://doi.org/10.1007/s00723-021-01399-y

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  • DOI: https://doi.org/10.1007/s00723-021-01399-y

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