Journal of Materials Science

, Volume 43, Issue 9, pp 3333–3337 | Cite as

Hopping conduction on PPy/SiO2 nanocomposites obtained via in situ emulsion polymerization

  • C. P. L. RubingerEmail author
  • L. C. Costa
  • A. C. C. Esteves
  • A. Barros-Timmons
  • J. A. Martins


This work describes the preparation and electrical characterization of conducting polypyrrole (PPy) and silica nanocomposites. Four samples were investigated: (i) pure PPy, (ii) PPy-covered SiO2 spherical nanoparticles, (iii) PPy-covered SiO2 spherical nanoparticles modified with 3-aminopropyltriethoxysilane (APS), and (iv) PPy-covered SiO2 fibers. Structural characterization was made by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The electrical conductivity was measured from 80 K to 300 K and three-dimensional variable range hopping conduction was observed. From the hopping parameter the mean hopping distance was obtained as well as the density of active center and the energy associated with it.


Emulsion Polymerization Conduction Process SiO2 Nanoparticles SiO2 Particle Scanning Electron Microscopy Characterization 



C.P.L. Rubinger (BPD 34868/2007) and A.C.C. Esteves thank Fundação para a Ciência e Tecnologia (FCT).


  1. 1.
    Sayari A, Hamoudi S (2001) Chem Mater 13:3151CrossRefGoogle Scholar
  2. 2.
    Tien YI, Wei KH (2001) Polymer 42:3213CrossRefGoogle Scholar
  3. 3.
    Zinger B, Miller LL (1984) J Am Chem Soc 106:6861CrossRefGoogle Scholar
  4. 4.
    Venkatachalam K, Gavalas VG, Xu SF, de Leon AC, Bhattacharyya D, Bachas LG (2006) J Nanosci Nanotechnol 6:2408CrossRefGoogle Scholar
  5. 5.
    Kim SW, Kim M, Lee WY, Hyeon T (2002) J Am Chem Soc 124:7642CrossRefGoogle Scholar
  6. 6.
    Hao LY, Zhu CL, Chen CN, Kang P, Hu Y, Fan WC, Chen ZY (2003) Synth Met 139:391CrossRefGoogle Scholar
  7. 7.
    Tourillon G, Garnier F (1982) J Electroanal Chem 135:173CrossRefGoogle Scholar
  8. 8.
    Gangopadhyay R, De A (2000) Chem Mater 12:608CrossRefGoogle Scholar
  9. 9.
    Dutta K, De SK (2006) Solid State Commun 140:167CrossRefGoogle Scholar
  10. 10.
    Maeda S, Armes SP (1995) Synth Met 73:151CrossRefGoogle Scholar
  11. 11.
    Huang CL, Matijevic E (1995) J Mater Res 10:1327CrossRefGoogle Scholar
  12. 12.
    Butterworth MD, Bell SA, Armes SP, Simpson AW (1996) J Colloid Interface Sci 183:91CrossRefGoogle Scholar
  13. 13.
    Maeda S, Armes SP (1993) J Colloid Interface Sci 159:257CrossRefGoogle Scholar
  14. 14.
    André A (1996) PhD Thesis, Université Pierre et Marie Curie, France Google Scholar
  15. 15.
    Foschiera JL, Pizzolato TM, Benvenutti EV (2001) J Braz Chem Soc 12:159CrossRefGoogle Scholar
  16. 16.
    Stöber W, Fink A, Bohn E (1968) J Colloid Interface Sci 26:62CrossRefGoogle Scholar
  17. 17.
    Esteves ACC, Barros-Timmons AM, Martins JA, Zhang W, Cruz-Pinto J, Trindade T (2005) Compos part B-Eng 36:51CrossRefGoogle Scholar
  18. 18.
    Mann S, Miyaki F, Davis SA, Charmant JPH (1999) Chem Matter 11:3021CrossRefGoogle Scholar
  19. 19.
    Armes SP, Vincent B (1987) J Chem Soc Chem Commun 288Google Scholar
  20. 20.
    Mott N (1968) J Non Cryst Solids 1:1CrossRefGoogle Scholar
  21. 21.
    Mott NF, Davis EA (1979) Electronic process in non-crystalline materials. Clarendon, OxfordGoogle Scholar
  22. 22.
    Austin IG, Mott NF (1969) Adv Phys 18:41CrossRefGoogle Scholar
  23. 23.
    Paul DK, Mitra SS (1973) Phys Rev Lett 31:1000CrossRefGoogle Scholar
  24. 24.
    Ambegaokar V, Halperin BI, Langer JS (1971) Phys Rev B 4:2612CrossRefGoogle Scholar
  25. 25.
    Fritzsche H (1974) Amorphous semiconductors. New York, Plenum, p 233Google Scholar
  26. 26.
    Gangopadhyay R, De A, Das S (2000) J Appl Phys 87:2363CrossRefGoogle Scholar
  27. 27.
    Singh R, Narula AK, Tandon RP, Mansingh A, Chandra S (1996) J Appl Phys 79:1476CrossRefGoogle Scholar
  28. 28.
    Singh R, Tandon RP, Chandra S (1993) J Phys Condens Matter 5:1313 CrossRefGoogle Scholar
  29. 29.
    Ho PKH, Friend RH (2002) J Chem Phys 116:6782CrossRefGoogle Scholar
  30. 30.
    Ho PKH, Thomas DS, Friend RH, Tessler N (1999) Science 285:233 CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media, LLC 2008

Authors and Affiliations

  • C. P. L. Rubinger
    • 1
    Email author
  • L. C. Costa
    • 1
  • A. C. C. Esteves
    • 2
  • A. Barros-Timmons
    • 2
  • J. A. Martins
    • 3
  1. 1.Physics DepartmentI3N, University of AveiroAveiroPortugal
  2. 2.Chemistry DepartmentCICECO, University of AveiroAveiroPortugal
  3. 3.Polymer Engineering DepartmentCICECO, University of MinhoGuimaraesPortugal

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