Tribology Letters

, Volume 7, Issue 2–3, pp 79–85 | Cite as

Large friction anisotropy of a polydiacetylene monolayer

  • R.W. Carpick
  • D.Y. Sasaki
  • A.R. Burns


Friction force microscopy measurements of a polydiacetylene monolayer film reveal a 300% friction anisotropy that is correlated with the film structure. The film consists of a monolayer of the red form of N‐(2‐ethanol)‐10,12‐pentacosadiynamide, prepared on a Langmuir trough and deposited on a mica substrate. As confirmed by atomic force microscopy and fluorescence microscopy, the monolayer consists of domains of linearly oriented conjugated backbones with pendant hydrocarbon side chains above and below the backbones. Maximum friction occurs when the sliding direction is perpendicular to the backbones. We propose that this effect is due to anisotropic film stiffness, which is a result of anisotropic side chain packing and/or anisotropic stiffness of the backbone itself. Friction anisotropy is therefore a sensitive, optically‐independent indicator of polymer backbone direction and monolayer structural properties.

atomic force microscopy friction force microscopy friction anisotropy friction asymmetry nanotribology polydiacetylene LB films directional dependence fluorescence 


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  1. [1]
    R.W. Carpick and M. Salmeron, Chem. Rev. 97 (1997) 1163.CrossRefGoogle Scholar
  2. [2]
    R.W. Carpick, N. Agra¨ýt, D.F. Ogletree and M. Salmeron, J. Vac. Sci. Technol. B 14 (1996) 1289.CrossRefGoogle Scholar
  3. [3]
    H. Yoshizawa, Y.-L. Chen and J. Israelachvili, Wear 168 (1993) 161.CrossRefGoogle Scholar
  4. [4]
    T. Bouhacina, J.P. Aimé, S. Gauthier, D. Michel and V. Heroguez, Phys. Rev. B 56 (1997) 7694.CrossRefGoogle Scholar
  5. [5]
    M. Hirano, K. Shinjo, R. Kaneko and Y. Murata, Phys. Rev. Lett. 67 (1991) 2642.CrossRefGoogle Scholar
  6. [6]
    R.M. Overney, H. Takano, M. Fujihira, W. Paulus and H. Ringsdorf, Phys. Rev. Lett. 72 (1994) 3546.CrossRefGoogle Scholar
  7. [7]
    H. Bluhm, U.D. Schwarz, K.P. Meyer and R. Wiesendanger, Appl. Phys. A 61 (1995) 525.Google Scholar
  8. [8]
    U.D. Schwarz, H. Bluhm, H. Hölscher, W. Allers and R. Wiesendanger, in: Physics of Sliding Friction, eds. B.N.J. Persson and E. Tosatti (Kluwer, 1996), p. 369.Google Scholar
  9. [9]
    P.E. Sheehan and C.M. Lieber, Science 272 (1996) 1158.Google Scholar
  10. [10]
    U. Gehlert, J.Y. Fang and C.M. Knobler, J. Phys. Chem. B 102 (1998) 2614.Google Scholar
  11. [11]
    M. Liley, D. Gourdon, D. Stamou, U. Meseth, T.M. Fischer, C. Lautz, H. Stahlberg, H. Vogel, N.A. Burnham and C. Duschl, Science 280 (1998) 273.CrossRefGoogle Scholar
  12. [12]
    R. Pearce and G.J. Vancso, Polymer 39 (1998) 6743.CrossRefGoogle Scholar
  13. [13]
    A. Artsyukhovich, L.D. Broekman and M. Salmeron, Langmuir 15 (1999) 2217.CrossRefGoogle Scholar
  14. [14]
    D. Bloor and R.R. Chance, in: Polydiacetylenes: Synthesis, Struc-ture, and Electronic Properties, eds. D. Bloor and R.R. Chance (Mar-tinus Nijhoff, Dordrecht, 1985).Google Scholar
  15. [15]
    A. Ulman, in: Introduction to Ultrathin Organic Films from Langmuir-Blodgett to Self-Assembly (Academic Press, 1991) pp. 182-191 and references therein.Google Scholar
  16. [16]
    D.N. Batchelder, S.D. Evans, T.L. Freeman, L. Haussling, H. Ringsdorf and H. Wolf, J. Am. Chem. Soc. 116 (1994) 1050.CrossRefGoogle Scholar
  17. [17]
    T. Kim and R.M. Crooks, Tetrahedron Lett. 35 (1994) 9501.CrossRefGoogle Scholar
  18. [18]
    M.D. Mowery and C.E. Evans, Tetrahedron Lett. 38 (1997) 11.CrossRefGoogle Scholar
  19. [19]
    M. Wenzel and G.H. Atkinson, J. Am. Chem. Soc. 111 (1989) 6123.CrossRefGoogle Scholar
  20. [20]
    A. Lio, A. Reichert, D.J. Ahn, J.O. Nagy, M. Salmeron and D.H. Charych, Langmuir 13 (1997) 6524.CrossRefGoogle Scholar
  21. [21]
    H. Muller and C.J. Eckhardt, Mol. Cryst. Liq. Cryst. 45 (1978) 313.Google Scholar
  22. [22]
    Y. Tomioka, N. Tanaka and S. Imazeki, J. Chem. Phys. 91 (1989) 5694.CrossRefGoogle Scholar
  23. [23]
    R.A. Nallicheri and M.F. Rubner, Macromolecules 24 (1991) 517.CrossRefGoogle Scholar
  24. [24]
    D.H. Charych, J.O. Nagy, W. Spevak and M.D. Bednarski, Science 261 (1993) 585.Google Scholar
  25. [25]
    A. Reichert, J.O. Nagy, W. Spevak and D. Charych, J. Am. Chem. Soc. 117 (1995) 829.CrossRefGoogle Scholar
  26. [26]
    D. Charych, Q. Cheng, A. Reichert, G. Kuziemko, M. Stroh, J.O. Nagy, W. Spevak and R.C. Stevens, Chemistry & Biology 3 (1996) 113.CrossRefGoogle Scholar
  27. [27]
    R.W. Carpick, D.Y. Sasaki and A.R. Burns, Langmuir (1999), sub-mitted.Google Scholar
  28. [28]
    D.Y. Sasaki, R.W. Carpick and A.R. Burns, in preparation (1999).Google Scholar
  29. [29]
    D.F. Ogletree, R.W. Carpick and M. Salmeron, Rev. Sci. Instrum. 67 (1996) 3298.CrossRefGoogle Scholar
  30. [30]
    R.R. Chance, G.N. Patel and J.D. Witt, J. Chem. Phys. 71 (1979) 206.CrossRefGoogle Scholar
  31. [31]
    M.H.P. Moers, H.E. Gaub and N.F. Vanhulst, Langmuir 10 (1994) 2774.CrossRefGoogle Scholar
  32. [32]
    S. Yamada and Y. Shimoyama, Jpn. J. Appl. Phys. 1, Regul. Pap. 35 (1996) 4480.CrossRefGoogle Scholar
  33. [33]
    A. Lio, A. Reichert, J.O. Nagy, M. Salmeron and D.H. Charych, J. Vac. Sci. Technol. B 14 (1996) 1481.CrossRefGoogle Scholar
  34. [34]
    M.D. Porter, T.B. Bright, D.L. Allara and C.E.D. Chidsey, J. Am. Chem. Soc. 109 (1987) 3559.CrossRefGoogle Scholar
  35. [35]
    M.A. Bryant and J.E. Pemberton, J. Am. Chem. Soc. 113 (1991) 8284.CrossRefGoogle Scholar
  36. [36]
    P. Fenter, P. Eisenberger and K.S. Liang, Phys. Rev. Lett. 70 (1993) 2447.CrossRefGoogle Scholar
  37. [37]
    A. Lio, D.H. Charych and M. Salmeron, J. Phys. Chem. B 101 (1997) 3800.Google Scholar
  38. [38]
    M.T. McDermott, J.-B.D. Green and M.D. Porter, Langmuir 13 (1997) 2505.CrossRefGoogle Scholar
  39. [39]
    J.D. Kiely, J.E. Houston, J.A. Mulder, R.P. Hsung and X.Y. Zhu, Tribol. Lett. 7 (1999) 103.CrossRefGoogle Scholar
  40. [40]
    J.D. Kiely, N.D. Shinn and J.E. Houston, Langmuir (1999), in prepa-ration.Google Scholar
  41. [41]
    R.W. Carpick, D.F. Ogletree and M. Salmeron, Appl. Phys. Lett. 70 (1997) 1548.CrossRefGoogle Scholar
  42. [42]
    M.D. Mowery, H. Menzel, M. Cai and C.E. Evans, Langmuir 14 (1998) 5594.CrossRefGoogle Scholar

Copyright information

© Kluwer Academic Publishers 1999

Authors and Affiliations

  • R.W. Carpick
    • 1
  • D.Y. Sasaki
    • 2
  • A.R. Burns
    • 1
  1. 1.Sandia National LaboratoriesSurface and Interface SciencesAlbuquerqueUSA
  2. 2.Sandia National LaboratoriesOrganic Materials Aging and ReliabilityAlbuquerqueUSA

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