화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Journal of Materials Research, Vol.19, No.10, 527-532, October, 2009
DOI10.3740/MRSK.2009.19.10.527  Export Citation
Au 나노입자가 함침된 Poly (3, 4-ethylenedioxythiphene) 고분자 박막의 전기변색 특성연구
Characterization of Electrochromic Properties of Au Nanoparticles Incorporated Poly (3, 4-ethylenedioxythiphene) Film
이종석, 구경회1, 박형호†
  • 연세대학교 신소재공학과
  • 1(주) 삼영필텍
Jong Seok Lee, Kyoung-Hoe Koo1, and Hyung-Ho Park†
  • Department of Materials Science and Engineering, Yonsei University, Seoul 120-749, Korea
  • 1Sam Young Fil-Tech. LTD, Seoul, 153-768, Korea
E-mail:
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.
Keywords:electrochromic;PEDOT;Au nanoparticles;hybrid film;switching speed
  1. Ito T, Shirakawa H, Ikeda S, J. Polym. Sci. Chem. Ed., 12, 11 (1974)
  2. Granqvist CG, Rev. Solid State Mater. Sci., 16, 291 (1990)
  3. Logdlund M, Lazzaroni R, Stafstrom S, Salaneck WR, Phys. Rev. Lett., 63, 1841 (1989)
  4. Frens G, Nat. Phys. Sci., 241, 20 (1973)
  5. Murata K, Suzuki M, Kajiya K, Nakamura N, Ohno H, Electrochem. Commun., 11, 668 (2009)
  6. Leff DV, Ohara PC, Heath JR, Gelbart WM, J. Phys. Chem., 99(18), 7036 (1995)
  7. Link S, El-Sayed MA, J. Phys. Chem., 103, 4212 (1999)
  8. Kvarnstrom C, Neugebauer H, Blomquist S, Ahonen HJ, Kankare J, Ivaska A, Electrochim. Acta, 44(16), 2739 (1999)
  9. Selvaganesh SV, Mathiyarasu J, Phani KLN, Yegnaraman V, Nanoscale Res. Lett., 2, 546 (2007)
  10. Kumar SS, Kumar CS, Mathiyarasu J, Phani KL, Langmuir, 23(6), 3401 (2007)
  11. Subramanian P, Clark NB, Spiccia L, MacFarlane DR, Jensen BW, Forsyth C, Synth. Met., 158, 704 (2008)
  12. Kim TY, Kim JE, Suh KS, Polym. Int., 55, 80 (2006)
  13. Lachkar A, Selmani A, Sacher E, Leclerc M, Mokhliss R, Synth. Met., 66, 209 (1994)
  14. Groenendaal BL, Jonas F, Freitag D, Pielartzik H, Reynolds JR, Adv. Mater., 12(7), 481 (2000)
  15. Sih BC, Wolf MO, Chem. Commun., 3375 (2005)
  16. Wang SJ, Lee CY, Park HH, Korean J. Mater. Res., 18(9), 503 (2008)
  17. Tehrani P, Isaksson J, Mammo W, Andersson MR, Robinson ND, Berggren M, Thin Solid Films, 515(4), 2485 (2006)
  18. Xiong SX, Xiao Y, Ma J, Zhang LY, Lu XH, Macromol. Rapid Commun., 28(3), 281 (2007)