Characterization of electrochromic properties of au nanoparticles incorporated poly (3, 4-ethylenedioxythiphene) film

Jong Seok Lee, Kyoung Hoe Koo, Hyung Ho Park

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The electrochromic properties of Au nanoparticles (NPs) incorporating poly (3, 4-ethylenedioxythiphene) (PEDOT) film were investigated. Trisodium citrate was used for stabilizing Au NPs to control the size. The capping molecules of the Au nanoparticles were exchanged from citrate to 2-mercaptoethanol (2-ME). Water was removed by centrifuge and Au NPs were redispersed in methanol (MeOH). Finally, we obtained ca. 11.7 nm diameter of Au NPs. The effects of 0.15 at% of Au NPs incorporation on the optical, electrical, and eletrochromic properties of PEDOT films were investigated. The electrical property and switching speed of Au/PEDOT film was slightly improved over that of PEDOT film because Au NPs play a hopping site role and affect packing density of the PEDOT chain. Through the ultra violet-visible spectra of PEDOT and Au/PEDOT films at -0.7 V (vs Ag/AgCl), blue shift of maximum absorption peak was observed from PEDOT (585.4 nm) to Au/PEDOT (572.2 nm) due to a shortening of conjugated length of PEDOT. The Au NPs interfered with the degree of conjugation and the maximum absorption peak was shifted to shorter wavelength.

Original languageEnglish
Pages (from-to)527-532
Number of pages6
JournalKorean Journal of Materials Research
Volume19
Issue number10
DOIs
Publication statusPublished - 2009 Oct 1

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Nanoparticles
Mercaptoethanol
Centrifuges
Citric Acid
Methanol
Electric properties
Wavelength
Molecules
Water

All Science Journal Classification (ASJC) codes

  • Materials Science(all)

Cite this

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title = "Characterization of electrochromic properties of au nanoparticles incorporated poly (3, 4-ethylenedioxythiphene) film",
abstract = "The electrochromic properties of Au nanoparticles (NPs) incorporating poly (3, 4-ethylenedioxythiphene) (PEDOT) film were investigated. Trisodium citrate was used for stabilizing Au NPs to control the size. The capping molecules of the Au nanoparticles were exchanged from citrate to 2-mercaptoethanol (2-ME). Water was removed by centrifuge and Au NPs were redispersed in methanol (MeOH). Finally, we obtained ca. 11.7 nm diameter of Au NPs. The effects of 0.15 at{\%} of Au NPs incorporation on the optical, electrical, and eletrochromic properties of PEDOT films were investigated. The electrical property and switching speed of Au/PEDOT film was slightly improved over that of PEDOT film because Au NPs play a hopping site role and affect packing density of the PEDOT chain. Through the ultra violet-visible spectra of PEDOT and Au/PEDOT films at -0.7 V (vs Ag/AgCl), blue shift of maximum absorption peak was observed from PEDOT (585.4 nm) to Au/PEDOT (572.2 nm) due to a shortening of conjugated length of PEDOT. The Au NPs interfered with the degree of conjugation and the maximum absorption peak was shifted to shorter wavelength.",
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Characterization of electrochromic properties of au nanoparticles incorporated poly (3, 4-ethylenedioxythiphene) film. / Lee, Jong Seok; Koo, Kyoung Hoe; Park, Hyung Ho.

In: Korean Journal of Materials Research, Vol. 19, No. 10, 01.10.2009, p. 527-532.

Research output: Contribution to journalArticle

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