Water‐Soluble Methyl Orange Fibrils as Versatile Templates for the Fabrication of Conducting Polymer Microtubules

Dai, Tingyang; Lu, Yun

doi:10.1002/marc.200600697

Cited by 63 publications

(37 citation statements)

References 58 publications

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“…2a, using the reported MO-templating method, [7] fibrillar PPy, with a diameter of 130-270 nm and a length of 3-9 mm was formed, which was in agreement with the previous reports. [38,39] Moreover, several apparent bundles of parallel fibrillar PPy were present. As shown in Fig.…”

Section: Resultsmentioning

confidence: 98%

Assembly of Polypyrrole-Graphene Oxide Hydrogel Nanocomposites and Their Swelling Properties

Cheng

et al. 2015

Journal of Macromolecular Science, Part B

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Downloaded by [University of Otago] at 07:29 04 July 2015 ACCEPTED MANUSCRIPT ACCEPTED MANUSCRIPT 2 An effective one-step strategy for the static assembly of hydrogels from polypyrrole (PPy) and graphene oxide (GO) is demonstrated. The static polymerization of pyrrole monomer was carried out in the presence of GO nanosheets, leading to the formation of PPy-GO hydrogels. During the static polymerization process, gelation takes place simultaneously by supramolecular interactions. The well-dispersed GO nanosheets in the polymer networks resulted in a significant improvement in water absorbencies. With only a very low loading of GO in the PPy-GO hydrogels, they exhibited significantly larger water uptake compared to a PPy hydrogel. Even in saline solutions, PPy-GO hydrogels also showed obvious water absorbency. Moreover, the PPy-GO hydrogels exhibited a better water retention ability compared with the control under the same conditions. This method is believed to provide possibilities to combine the extraordinary performances of GO with the multifunctional properties of conducting polymers, thus holding great potential for technical applications in the future.

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Section: Resultsmentioning

confidence: 98%

Assembly of Polypyrrole-Graphene Oxide Hydrogel Nanocomposites and Their Swelling Properties

Cheng

et al. 2015

Journal of Macromolecular Science, Part B

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“…Besides, a FeCl 3 -methyl orange (MO) reactive self-degraded template has been employed to direct the growth of PPy on its surface and to promote the assembly into hollow nanotubular structures. [40] Moreover, water-soluble MO fibrils have also been used as a hard-template for the construction of conducting polymer microtubules [41]. The self-sacrificed template process is one-step towards synthesis of bulk quantities of conducting polymer nanofibers [42].…”

Section: Hard-template Methodsmentioning

confidence: 99%

Conducting polymer nanostructures and their application in biosensors

Xia

Wei

Wan

2010

Journal of Colloid and Interface Science

370

187

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“…The yellow salt is very soluble in water at pH above 4.5, while below pH 3 its red acid form (Fig. ) becomes insoluble (Fig. ).…”

Section: Methyl Orangementioning

confidence: 99%

“…When pyrrole is oxidized in the presence of methyl orange with strongly acidic iron(III) chloride solution, methyl orange starts to precipitate in needle‐like aggregates immediately after addition of oxidant solution, even before the oxidation of pyrrole has started. The molecules of methyl orange which include aromatic rings (Fig.…”

Section: Methyl Orangementioning

confidence: 99%

Strategies towards the control of one‐dimensional polypyrrole nanomorphology and conductivity

Stejskal

2018

Polymer International

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Conducting polypyrrole nanotubes rank among the most conducting polymer materials and find applications in organic electronics and energy conversion devices. They are produced by the chemical oxidation of pyrrole in globular form, which converts to nanotubes or nanofibres in the presence of suitable templates and is often accompanied by a pronounced conductivity increase. This is illustrated by the anionic dye, methyl orange, where the template formation is based on azo–hydrazone tautomerism associated with hydrogen atom transfer caused by the acidity change. In other words, the soluble salt of the dye converts to an insoluble acid, and its one‐dimensional aggregates serve as a locus for the adsorption of pyrrole oligomers. This is followed by the growth of polypyrrole chains constituting the nanotube wall. Safranin, a cationic dye, produces a template by a completely different mechanism, the oxidative generation of insoluble safranin oligomers that perform with similar results. Other mechanisms of template formation are also proposed and discussed but mainly organic dyes have a significant potential to support the one‐dimensional growth of polypyrrole. The role of surfactants that affect the morphology of templates, and subsequently also of polypyrrole, is demonstrated. © 2018 Society of Chemical Industry

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Water‐Soluble Methyl Orange Fibrils as Versatile Templates for the Fabrication of Conducting Polymer Microtubules

Cited by 63 publications

References 58 publications

Assembly of Polypyrrole-Graphene Oxide Hydrogel Nanocomposites and Their Swelling Properties

Assembly of Polypyrrole-Graphene Oxide Hydrogel Nanocomposites and Their Swelling Properties

Conducting polymer nanostructures and their application in biosensors

Strategies towards the control of one‐dimensional polypyrrole nanomorphology and conductivity

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