Charge transfer effect in the polyaniline-gold nanoparticle memory system

Ricky J. Tseng; Christina O. Baker; Brian Shedd; Jiaxing Huang; Richard B. Kaner; Jianyong Ouyang; Yang Yang

doi:10.1063/1.2434167

Charge transfer effect in the polyaniline-gold nanoparticle memory system

Ricky J. Tseng^*, Christina O. Baker, Brian Shedd, Jiaxing Huang, Richard B. Kaner, Jianyong Ouyang, Yang Yang

^*Corresponding author for this work

Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

171 Scopus citations

Abstract

A composite system comprised of polyaniline nanofibers bonded with gold nanoparticles is shown to possess a memory effect via a charge transfer mechanism. The charge transfer occurs between the imine nitrogen in the polyaniline and the gold nanoparticles as confirmed by x-ray photoelectron spectroscopy and Raman spectroscopy. This charge transfer enables a bistable electrical conductivity, allowing the material system to be used as a digital memory device. The charge transfer is further confirmed by the elimination of the conductance switching when the fully reduced form of polyaniline, leucoemeraldine, which possesses no imine nitrogens, is used in place of the emeraldine form.

Original language	English (US)
Article number	053101
Journal	Applied Physics Letters
Volume	90
Issue number	5
DOIs	https://doi.org/10.1063/1.2434167
State	Published - 2007

Funding

This work has been supported by the Microelectronics Advanced Research Corp. (MARCO) Focus Center on Functional Engineered Nano Architectonics (FENA) of UCLA, the Air Force Office of Scientific Research, and the National Science Foundation NIRT Grant No. 0507294. One of the authors (B.S.) was supported by a NSF IGERT fellowship.

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.2434167

Cite this

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title = "Charge transfer effect in the polyaniline-gold nanoparticle memory system",

abstract = "A composite system comprised of polyaniline nanofibers bonded with gold nanoparticles is shown to possess a memory effect via a charge transfer mechanism. The charge transfer occurs between the imine nitrogen in the polyaniline and the gold nanoparticles as confirmed by x-ray photoelectron spectroscopy and Raman spectroscopy. This charge transfer enables a bistable electrical conductivity, allowing the material system to be used as a digital memory device. The charge transfer is further confirmed by the elimination of the conductance switching when the fully reduced form of polyaniline, leucoemeraldine, which possesses no imine nitrogens, is used in place of the emeraldine form.",

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AU - Baker, Christina O.

AU - Shedd, Brian

AU - Huang, Jiaxing

AU - Kaner, Richard B.

AU - Ouyang, Jianyong

AU - Yang, Yang

N1 - Funding Information: This work has been supported by the Microelectronics Advanced Research Corp. (MARCO) Focus Center on Functional Engineered Nano Architectonics (FENA) of UCLA, the Air Force Office of Scientific Research, and the National Science Foundation NIRT Grant No. 0507294. One of the authors (B.S.) was supported by a NSF IGERT fellowship.

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N2 - A composite system comprised of polyaniline nanofibers bonded with gold nanoparticles is shown to possess a memory effect via a charge transfer mechanism. The charge transfer occurs between the imine nitrogen in the polyaniline and the gold nanoparticles as confirmed by x-ray photoelectron spectroscopy and Raman spectroscopy. This charge transfer enables a bistable electrical conductivity, allowing the material system to be used as a digital memory device. The charge transfer is further confirmed by the elimination of the conductance switching when the fully reduced form of polyaniline, leucoemeraldine, which possesses no imine nitrogens, is used in place of the emeraldine form.

AB - A composite system comprised of polyaniline nanofibers bonded with gold nanoparticles is shown to possess a memory effect via a charge transfer mechanism. The charge transfer occurs between the imine nitrogen in the polyaniline and the gold nanoparticles as confirmed by x-ray photoelectron spectroscopy and Raman spectroscopy. This charge transfer enables a bistable electrical conductivity, allowing the material system to be used as a digital memory device. The charge transfer is further confirmed by the elimination of the conductance switching when the fully reduced form of polyaniline, leucoemeraldine, which possesses no imine nitrogens, is used in place of the emeraldine form.

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Charge transfer effect in the polyaniline-gold nanoparticle memory system

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