Octadecanoic acid self-assembled monolayer growth at sapphire surfaces

Langmuir

Volumn 19, Issue 7, 2003, Pages 2665-2672

  Taylor, Chad E ^a   Schwartz, Daniel K ^a  

^a UCB 450   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

CONTACT ANGLE MEASUREMENTS; OCTADECANOIC ACID; SELF ASSEMBLY MONOLAYER GROWTH;

ANNEALING; ATOMIC FORCE MICROSCOPY; CONTACT ANGLE; FOURIER TRANSFORM INFRARED SPECTROSCOPY; MONOLAYERS; SELF ASSEMBLY; SINGLE CRYSTALS; SOLUTIONS; SUBSTRATES; SURFACES;

SAPPHIRE;

EID: 0038399950     PISSN: 07437463     EISSN: None     Source Type: Journal    
DOI: 10.1021/la026218b     Document Type: Article

References (39)

1. Schwartz, D. K. Annu. Rev. Phys. Chem. 2001, 52, 107.
2. Ulman, A. Chem. Rev. 1996, 96, 1533.
3. Doudevski, I.; Hayes, W. A.; Schwartz, D. K. Phys. Rev. Lett. 1998, 81, 4297.
4. Doudevski, I.; Schwartz, D. K. J. Am. Chem. Soc. 2001, 123, 6867.
5. Tao, Y.-T. J. Am. Chem. Soc. 1993, 115, 4350.
6. Gun, J.; Iscovici, R.; Sagiv, J. J. Colloid Interfac. Sci. 1984, 101, 201.
7. Allara, D. L.; Nuzzo, R. G. Langmuir 1985, 1, 45.
8. Allara, D. L.; Nuzzo, R. G. Langmuir 1985, 1, 52.
9. Laibinis, P. E.; Hickman, J. J.; Wrighton, M. S.; Whitesides, G. M. Science 1989, 245, 845.
10. Folkers, J. P.; Gorman, C. B.; Laibinis, P. E.; Bucholz, S.; Whitesides, G. M.; Nuzzo, R. G. Langmuir 1995, 11, 813.
11. Thompson, W. R.; Pemberton, J. E. Langmuir 1995, 11, 1720.
12. Chen, S. H.; Frank, C. W. Langmuir 1989, 5, 978.
13. Gao, W.; Dickinson, L.; Grozinger, C.; Morin, F. G.; Reven, L. Langmuir 1996, 12, 6429.
14. Pawsey, S.; Yach, K.; Halla, J.; Reven, L. Langmuir 2000, 16, 3294.
15. Alexander, M. R.; Thompson, G. E.; Beamson, G. Surf. Interface Anal. 2000, 29, 468.
16. Woodward, J. T.; Ulman, A.; Schwartz, D. K. Langmuir 1996, 12, 3626.
17. Woodward, J. T.; Schwartz, D. K. J. Am. Chem. Soc. 1996, 118, 7861.
18. Woodward, J. T.; Doudevski, I.; Sikes, H. D.; Schwartz, D. K. J. Phys. Chem. B 1997, 101, 7535.
19. Doudevski, I.; Schwartz, D. K. Phys. Rev. B 1999, 60, 14.
20. Hayes, W. A.; Schwartz, D. K. Langmuir 1998, 14, 5913.
21. Messerschmidt, C.; Schwartz, D. K. Langmuir 2001, 17, 462.
22. Henrich, V. E.; Cox, P. A. In The Surface Science of Metal Oxides; Cambridge University Press: Cambridge, 1996.
23. Guo, J.; Chang, H. L. M.; Lam, D. J. Appl. Phys. Lett. 1992, 61, 3116.
24. Guo, J.; Ellis, D. E.; Lam, D. J. Phys. Rev. B 1992, 45, 13647.
25. Bench, M. W.; Kotula, P. G.; Carter, C. B. Surf. Sci. 1997, 391, 183.
26. Yoshimoto, M.; Maeda, T.; Ohnishi, T.; Koinuma, H.; Ishiyama, O.; Shinohara, M.; Kubo, M.; Miura, R.; Miyamoto, A. Appl. Phys. Lett. 1995, 67, L2615.
27. Cui, J.; Sun, A.; Reshichkov, M.; Yun, F.; Morkoc, H. MRS Internet J. Nitride Semicond. Res. 2000, 5, 1.
28. Bain, C. D.; Troughton, E. B.; Tao, Y.-T.; Evall, J.; Whitesides, G. M.; Nuzzo, R. G. J. Am. Chem. Soc. 1989, 111, 321.
29. At these C- and R-sapphire surfaces, terraces are aligned parallel to each other and separated by monatomic steps. The observed step heights are characteristic of the crystal plane (0.22 ± 0.02 nm for C and 0.36 ± 0.03 nm for R), and the terrace widths are the result of the orientational miscut of the crystal from its nominal plane.
30. In ex situ analyses, film growth is quenched upon surface removal from solution. Although our previous studies of OPA SAMs on mica indicate the morphology of quenched films is qualitatively similar to that of SAMs growth in situ (i.e., isolated islands of close-packed molecules), there is concern that the process of quenching may introduce changes in submonolayer structures. Significantly, in the OPA/mica system, quantitative changes in the surface coverage and island size distribution were noted. Certainly, an in situ study of octadecanoic acid SAM growth on sapphire may be pursued in future experiments.
31. Magonov, S. N.; Elings, V.; Whangbo, M.-H. Surf. Sci. Lett. 1997, 375, L385.
32. Sauer, B. B.; McLean, R. S.; Thomas, R. R. Langmuir 1998, 14, 3045.
33. Cassie, A. B. D. Discuss. Faraday Soc. 1952, 75, 5041.
34. Snyder, R. G.; Strauss, H. L.; Ellinger, C. A. J. Phys. Chem. 1982, 86, 5145.
35. Snyder, R. G.; Hsu, S. L.; Krimm, S. Spectrochim. Acta, Part A 1978, 34, 395.
36. Oberg, K.; Persson, P.; Shchukarev, A.; Eliasson, B. Thin Solid Films 2001, 397, 102.
37. 2)) vibrational mode could be identified. Although octadecanoic acid is bound very weakly to the sapphire surface (discussed in more detail later), we speculate it is chemisorbed as the carboxylate species, consistent with all other reports of carboxylic acid adsorption at alumina surfaces.
38. Alexander, M. R. Self-assembled monolayers on aluminum: The role of oxide surface chemistry. Oral presentation at the 2002 American Vacuum Society National Meeting.
39. Goetting, L. B.; Deng, T.; Whitesides, G. M. Langmuir 1999, 15, 1182.