Inclusion of Conducting Polymers in Inorganic Hosts: Towards Conducting Nanostructures

Bein, Thomas; Enzel, Patricia

doi:10.1007/978-94-017-1952-0_6

Cited by 49 publications

(1 citation statement)

References 27 publications

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“…These structural defects severely hinder the charge-transport process in polymers [3]. One way to reduce such structural defects is to encapsulate these polymers in heterogeneous hosts, such as zeolites [4] and layered materials [4], which would reduce interchain interactions.…”

Section: Introductionmentioning

confidence: 99%

Polypyrrole-Montmorillonite Nanocomposite: A Composite Fast Ion Conductor

Krishantha

Rajapakse

Tennakoon

et al. 2005

Journal of Composite Materials

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Cu(II)-exchanged montmorillonite [Cu(II)-MMT] takes up pyrrolium ions by ion exchange. Two pyrrolium ions are inserted for each Cu(II) ion expelled from its interlayers. These pyrrolium ions undergo spontaneous polymerization because of the remaining Cu(II) ions present within the intergalleries to form Cu(I)-polypyrrole-MMT nanocomposite. The polypyrrole (PPY) dispels any water already present within the intergalleries and the material becomes hydrophobic and reluctant to take up water. The inherent d-spacing due to anhydrous PPY present within the intergalleries is 16.0 A, which is a 6.4 A enhancement from the situation, which contains a bare inorganic ion. The material possesses unusually high mixed electrical conductivity. The conjugation length (and hence the electronic conductivity) decreases as the temperature is increased as confirmed by the Fourier transform infrared spectroscopy. However, the ionic component of the conductivity increases with temperature. The temperature dependence of conductivity shows Arrhenius behavior but two different activation regions are clearly visible. The activation energy for Cu(I) migration within the nanocomposite is much lower than 100 C (Ea1/4 0.09 eV). At the higher temperature region, the activation energy is 0.23 eV and this value is also comparatively low suggesting the favorable motion of Cu(I) ions within the PPY-MMT nanocomposite thus making it a fast Cu(I) ion conductor. The ionic conductivities are in the range 0.66-1.15 mS cm 1 in the temperature range from 25 to 120 C.

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Section: Introductionmentioning

confidence: 99%

Polypyrrole-Montmorillonite Nanocomposite: A Composite Fast Ion Conductor

Krishantha

Rajapakse

Tennakoon

et al. 2005

Journal of Composite Materials

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Organoporous hosts with adjustable molecular environments

Swift¹,

Russell²,

Ward³

1997

Advanced Materials

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Tailored organoporous materials—the organic counterparts to inorganic nanoporous materials–have been prepared by a design strategy based on the observation that guanidinium organosulfonates (C(NH2)3⊕RSO3⊖) crystallize predictably in layered structures. The extension to disulfonates is shown to produce, among others, the motif shown in the Figure (the ovals are organodisulfonate pillars and the rectangles, guests).

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Classes of CPs: Part 1

Chandrasekhar

1999

Conducting Polymers, Fundamentals and Applications

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Inclusion of Conducting Polymers in Inorganic Hosts: Towards Conducting Nanostructures

Cited by 49 publications

References 27 publications

Polypyrrole-Montmorillonite Nanocomposite: A Composite Fast Ion Conductor

Polypyrrole-Montmorillonite Nanocomposite: A Composite Fast Ion Conductor

Organoporous hosts with adjustable molecular environments

Classes of CPs: Part 1

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