Investigation of Ag-poly(3,4-ethylenedioxythiophene):polystyrene sulfonate nanocomposite films prepared by a one-step aqueous method

Poly(3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS) hybrid films containing Ag nanoparticles were synthesized by a one-step aqueous method. The embedded Ag nanoparticles were produced using PEDOT as a reducing agent and PSS as a stabilizer. We have also demonstrated nanoparticle growt...

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Bibliographic Details
Published in:Journal of applied physics 2011-06, Vol.109 (12), p.124902-124902-4
Main Authors: Wang, Seok-Joo, Choi, Yong-June, Park, Hyung-Ho
Format: Article
Language:English
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Summary:Poly(3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS) hybrid films containing Ag nanoparticles were synthesized by a one-step aqueous method. The embedded Ag nanoparticles were produced using PEDOT as a reducing agent and PSS as a stabilizer. We have also demonstrated nanoparticle growth with increasing reaction time and silver nitrate content. Finally, as a nanocomposite-containing nanoparticle without surface-capping molecules and embedded in a conducting polymer matrix, the Ag NPs-PEDOT:PSS nanocomposite is interesting because it represents a type of material in which a metallic nano-island is embedded in the semiconducting matrix with a pure interface. One-step synthesized silver nanoparticles were found to induce a lowering of the work function and an increase of the highest occupied molecular orbital level in pristine PEDOT:PSS films by electron exchange with PEDOT, and also induced an inhibition of the electrostatic bond between PEDOT and PSS.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.3596570