Design of self-assembled monolayers that release attached groups using applied electrical potentials

Langmuir

Volumn 13, Issue 23, 1997, Pages

  Hodneland, Christian D ^a   Mrksich, Milan ^a  

^a UNIVERSITY OF CHICAGO   (United States)

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[No Author keywords available]

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EID: 5244226776     PISSN: 07437463     EISSN: None     Source Type: Journal    
DOI: None     Document Type: Article

References (20)

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2. Chidsey, C. E. D. Science 1991, 251, 919-922. Finklea, H. O.; Hanshew, D. D. J. Am. Chem. Soc. 1992, 114, 3173-3181. Rowe, G. K.; Creager, S. E. Langmuir 1991, 7, 2307-2312.
3. Chidsey, C. E. D. Science 1991, 251, 919-922. Finklea, H. O.; Hanshew, D. D. J. Am. Chem. Soc. 1992, 114, 3173-3181. Rowe, G. K.; Creager, S. E. Langmuir 1991, 7, 2307-2312.
4. Mrksich, M.; Grunwell, J. R.; Whitesides, G. M. J. Am. Chem. Soc. 1995, 117, 12009-12010. Motesharei, K.; Myles, D. C. J. Am. Chem. Soc. 1994, 116, 7413-7414. Spinke, J.; Liley, M.; Guder, H.-J.; Angermaier, L.; Knoll, W. Langmuir 1993, 9, 1821-1825.
5. Mrksich, M.; Grunwell, J. R.; Whitesides, G. M. J. Am. Chem. Soc. 1995, 117, 12009-12010. Motesharei, K.; Myles, D. C. J. Am. Chem. Soc. 1994, 116, 7413-7414. Spinke, J.; Liley, M.; Guder, H.-J.; Angermaier, L.; Knoll, W. Langmuir 1993, 9, 1821-1825.
6. Mrksich, M.; Grunwell, J. R.; Whitesides, G. M. J. Am. Chem. Soc. 1995, 117, 12009-12010. Motesharei, K.; Myles, D. C. J. Am. Chem. Soc. 1994, 116, 7413-7414. Spinke, J.; Liley, M.; Guder, H.-J.; Angermaier, L.; Knoll, W. Langmuir 1993, 9, 1821-1825.
7. Mrksich, M.; Whitesides, G.M. Annu. Rev. Biophys. Biomol. Struct. 1996, 25, 55-78. Mrksich, M. Curr. Opin. Colloid Interface Sci. 1997, 2, 83-88.
8. Mrksich, M.; Whitesides, G.M. Annu. Rev. Biophys. Biomol. Struct. 1996, 25, 55-78. Mrksich, M. Curr. Opin. Colloid Interface Sci. 1997, 2, 83-88.
9. For reviews, see: Bishop, A. R.; Nuzzo, R. G. Curr. Op. Colloid Interface Sci. 1996, 1, 127-135. Ulman, A. Chem. Rev. 1996, 96, 1533-1544.
10. For reviews, see: Bishop, A. R.; Nuzzo, R. G. Curr. Op. Colloid Interface Sci. 1996, 1, 127-135. Ulman, A. Chem. Rev. 1996, 96, 1533-1544.
11. Hickman, J. J.; Ofer, D.; Laibinis, P. E.; Whitesides, G. M.; Wrighton, M. S. Science 1991, 252, 688-691.
12. Abbott, L.; Whitesides, G. M. Langmuir 1994, 10, 1493-1497.
13. Zweig, A.; Hodgson, W. G.; Jura, W. H. J. Am. Chem. Soc. 1964, 86, 4124-4129.
14. Cyclic voltammetry was performed with a Bioanalytical Systems CV-50W potentiostat using a cell fitted with a carbon working electrode, Pt counter electrode, and Ag/AgCl reference electrode. All scans were performed at 100 mV/s with the electroactive molecule at a concentration of 1 mM.
15. Substrates were prepared by electron-beam evaporation of an adhesion layer of titanium (2.5 nm) and then gold (80 nm) onto silicon wafers (Silicon Sense). The substrates were immersed in solutions of 2-ethoxy-5-methoxy-1,3-benzodioxole terminated undecanethiol (x = 0.3) and 11-mercapto-1-undecanol (Aldrich) in ethanol (1 mM total) for 12 h to give mixed SAMs.
16. 1H NMR spectra. Details will be described in a subsequent full report.
17. All cyclic voltammograms were performed with a fabricated cell fitted with the gold/SAM working electrode, platinum counter electrode, and silver wire pseudo-reference electrode. All scans were performed at 50 mV/s in aqueous 0.15 M NaCl at pH 7.4 (phosphate buffer),
18. SAMs were prepared from a mixture of catechol terminated alkanethiol (x = 0.5 ) and hydroxyl-terminated alkanethiol. The catecholterminated alkanethiol was an intermediate in the synthesis of the corresponding orthoformate (see ref 10).
19. 4 for 15 min, thoroughly rinsed with water and then with ethanol, and dried with a stream of nitrogen. The monolayer was electrochemically cycled from -300 to 1000 mV and produced voltammograms that were indistinguishable from those for a monolayer presenting catechol and hydroxyl groups (as in Figure 3C).
20. Lau, A. N. K. and Miller, L. L. J. Am. Chem. Soc. 1983, 105, 5271-5277.