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- W2036690884 abstract "Abstract Nanomaterials made from the conducting polymer polyaniline (PANI) have very unique applications due to their high surface area and ease of processing. The link between synthesis conditions and morphology of PANI nanomaterials has been the subject of numerous investigations in recent years. Formation mechanisms for different morphologies have also been proposed. In this work, we report a self‐assembly method to make high yield PANI nanotubes with rectangular holes and outer contours by qualitatively and purposely controlling reaction rate. We find that aggregation of detectable and separable reaction intermediates is directly correlated with PANI nanotubes formation, consistent with the observation of oligoaniline precipitates reported in the literature. Control over intermediate aggregates morphology is studied systematically. By controlling the reaction rate through adjusting acid and oxidant concentrations, we can slow down the aggregation rate of the intermediates to largely enhance the yield of nanotubes with rectangular cross‐sections. To understand the correlation between the intermediates aggregation and the morphology of the resulting PANI tubes, the morphologies of intermediate aggregates and final nanotubes were characterized using SEM, STEM, and TEM. Open circuit potential (OCP) was used to monitor the polymerization process. Molecular weight distribution results were also obtained for the intermediate aggregates and the final products. Based on our study, we propose a simple PANI nanotube formation mechanism. magnified image" @default.
- W2036690884 created "2016-06-24" @default.
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- W2036690884 date "2009-10-01" @default.
- W2036690884 modified "2023-10-12" @default.
- W2036690884 title "Self-Assembled Polyaniline Nanotubes with Rectangular Cross-Sections" @default.
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- W2036690884 doi "https://doi.org/10.1002/macp.200900250" @default.
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