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Molecular interfacial engineering of adhesion between polyfluorene and indium–tin oxide

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Abstract

A self-assembly monolayer (SAM) selected from alkyl- and phenyl-silanes was inserted between polyfluorene (PFO) and indium–tin oxide (ITO). The relative changes in adhesion energy of PFO/SAM/ITO were semi-quantitatively measured. These relative changes are calculated by dividing the gains in adhesion energy by the adhesion energy of PFO/ITO with no SAM. The values for five alkyl-silanes with varying chain lengths are in the range of 1.0±0.2 to 1.8±0.5, and those for five selected phenyl-silanes are 1.8±0.5 to 4.1±1.1. Phenyl-silanes with a unit larger than that of benzene, together with appropriate tail-group functionality, give the best enhancement in adhesion.

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Authors and Affiliations

  1. Department of Physics and the Materials Science and Technology Research Centre, the Chinese University of Hong Kong, Shatin, Hong Kong, P.R. China

    K.W. Wong, L.Y. Sin, M.K. Yeung, S.K. Hark & W.M. Lau

  2. Institute of Precision Engineering, the Chinese University of Hong Kong, Shatin, Hong Kong, P.R. China

    K.W. Wong & W.M. Lau

  3. Surface Science Western, University of Western Ontario, London, Ontario, N6A 5B7, Canada

    W.M. Lau

Authors
  1. K.W. Wong
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  2. L.Y. Sin
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  3. M.K. Yeung
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  4. S.K. Hark
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  5. W.M. Lau
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Corresponding author

Correspondence to W.M. Lau.

Additional information

PACS

61.30.Hn; 61.82.Pv; 62.20.-x; 68.35.-p; 68.35.Np

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Wong, K., Sin, L., Yeung, M. et al. Molecular interfacial engineering of adhesion between polyfluorene and indium–tin oxide. Appl. Phys. A 87, 23–26 (2007). https://doi.org/10.1007/s00339-007-3876-1

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  • DOI: https://doi.org/10.1007/s00339-007-3876-1

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