Abstract

We present a method to characterize surface-chemical properties of gold nanocrystals. Spherical, 60nm gold nanocrystals were immobilized on quartz substrates by a coupling agent and cleaned in a hydrogen plasma. The nanocrystals were then functionalized with alkanethiol self-assembled monolayers (SAM) of varying chain lengths by adsorption from the gas phase, and localized surface plasmon resonance (LSPR) spectroscopy was performed on the samples. Depending on the alkanethiol chain length, the adsorption of the SAM redshifted the LSPR to different extents, in accordance with Mie theory. SAM thickness differences below 1nm could be easily resolved. Our results demonstrate that LSPR spectroscopy can be applied to characterize thin organic layers on dry supported gold particles with high sensitivity.

© 2008 Optical Society of America

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  1. M. Daniel and D. Astruc, Chem. Rev. 104, 293 (2004).
    [CrossRef] [PubMed]
  2. C. L. Nehl, H. Liao, and J. H. Hafner, Nano Lett. 6, 683 (2006).
    [CrossRef] [PubMed]
  3. S. Link and M. A. El-Sayed, Annu. Rev. Phys. Chem. 54, 331 (2003).
    [CrossRef] [PubMed]
  4. T. Kraus, L. Malaquin, E. Delamarche, H. Schmid, N. D. Spencer, and H. Wolf, Adv. Mater. 17, 2438 (2005).
    [CrossRef]
  5. W. Lu and C. M. Lieber, J. Phys. D 39, 387 (2006).
    [CrossRef]
  6. N. Nath and A. Chilkoti, Anal. Chem. 74, 504 (2002).
    [CrossRef] [PubMed]
  7. J. Liao, L. Bernard, M. Langer, C. Schönenberger, and M. Calame, Adv. Mater. 18, 2444 (2006).
    [CrossRef]
  8. E. Hutter and J. H. Fendler, Adv. Mater. 16, 1685 (2004).
    [CrossRef]
  9. U. Kreibig and M. Vollmer, Optical Properties of Metal Clusters, Springer Series in Materials Science (Springer, 1995), Vol. 25.
  10. M. D. Malinsky, K. L. Kelly, G. C. Schatz, and R. P. van Duyne, J. Am. Chem. Soc. 123, 1471 (2001).
    [CrossRef]
  11. A. J. Haes, S. Zou, G. C. Schatz, and R. P. van Duyne, J. Phys. Chem. B 108, 6961 (2004).
    [CrossRef]
  12. P. Mulvaney, Langmuir 12, 788 (1996).
    [CrossRef]
  13. M. D. Porter, T. B. Bright, D. L. Allara, and C. E. D. Chidsey, J. Am. Chem. Soc. 109, 3559 (1987).
    [CrossRef]
  14. M. Quinten and U. Kreibig, Surf. Sci. 172, 557 (1986).
    [CrossRef]

2006

C. L. Nehl, H. Liao, and J. H. Hafner, Nano Lett. 6, 683 (2006).
[CrossRef] [PubMed]

W. Lu and C. M. Lieber, J. Phys. D 39, 387 (2006).
[CrossRef]

J. Liao, L. Bernard, M. Langer, C. Schönenberger, and M. Calame, Adv. Mater. 18, 2444 (2006).
[CrossRef]

2005

T. Kraus, L. Malaquin, E. Delamarche, H. Schmid, N. D. Spencer, and H. Wolf, Adv. Mater. 17, 2438 (2005).
[CrossRef]

2004

M. Daniel and D. Astruc, Chem. Rev. 104, 293 (2004).
[CrossRef] [PubMed]

E. Hutter and J. H. Fendler, Adv. Mater. 16, 1685 (2004).
[CrossRef]

A. J. Haes, S. Zou, G. C. Schatz, and R. P. van Duyne, J. Phys. Chem. B 108, 6961 (2004).
[CrossRef]

2003

S. Link and M. A. El-Sayed, Annu. Rev. Phys. Chem. 54, 331 (2003).
[CrossRef] [PubMed]

2002

N. Nath and A. Chilkoti, Anal. Chem. 74, 504 (2002).
[CrossRef] [PubMed]

2001

M. D. Malinsky, K. L. Kelly, G. C. Schatz, and R. P. van Duyne, J. Am. Chem. Soc. 123, 1471 (2001).
[CrossRef]

1996

P. Mulvaney, Langmuir 12, 788 (1996).
[CrossRef]

1987

M. D. Porter, T. B. Bright, D. L. Allara, and C. E. D. Chidsey, J. Am. Chem. Soc. 109, 3559 (1987).
[CrossRef]

1986

M. Quinten and U. Kreibig, Surf. Sci. 172, 557 (1986).
[CrossRef]

Adv. Mater.

T. Kraus, L. Malaquin, E. Delamarche, H. Schmid, N. D. Spencer, and H. Wolf, Adv. Mater. 17, 2438 (2005).
[CrossRef]

J. Liao, L. Bernard, M. Langer, C. Schönenberger, and M. Calame, Adv. Mater. 18, 2444 (2006).
[CrossRef]

E. Hutter and J. H. Fendler, Adv. Mater. 16, 1685 (2004).
[CrossRef]

Anal. Chem.

N. Nath and A. Chilkoti, Anal. Chem. 74, 504 (2002).
[CrossRef] [PubMed]

Annu. Rev. Phys. Chem.

S. Link and M. A. El-Sayed, Annu. Rev. Phys. Chem. 54, 331 (2003).
[CrossRef] [PubMed]

Chem. Rev.

M. Daniel and D. Astruc, Chem. Rev. 104, 293 (2004).
[CrossRef] [PubMed]

J. Am. Chem. Soc.

M. D. Malinsky, K. L. Kelly, G. C. Schatz, and R. P. van Duyne, J. Am. Chem. Soc. 123, 1471 (2001).
[CrossRef]

M. D. Porter, T. B. Bright, D. L. Allara, and C. E. D. Chidsey, J. Am. Chem. Soc. 109, 3559 (1987).
[CrossRef]

J. Phys. Chem. B

A. J. Haes, S. Zou, G. C. Schatz, and R. P. van Duyne, J. Phys. Chem. B 108, 6961 (2004).
[CrossRef]

J. Phys. D

W. Lu and C. M. Lieber, J. Phys. D 39, 387 (2006).
[CrossRef]

Langmuir

P. Mulvaney, Langmuir 12, 788 (1996).
[CrossRef]

Nano Lett.

C. L. Nehl, H. Liao, and J. H. Hafner, Nano Lett. 6, 683 (2006).
[CrossRef] [PubMed]

Surf. Sci.

M. Quinten and U. Kreibig, Surf. Sci. 172, 557 (1986).
[CrossRef]

Other

U. Kreibig and M. Vollmer, Optical Properties of Metal Clusters, Springer Series in Materials Science (Springer, 1995), Vol. 25.

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Figures (4)

Fig. 1
Fig. 1

Scanning electron micrograph (SEM) of a 60 nm gold nanocrystals film on a quartz substrate after plasma treatment. The film is covered with a thin gold layer to enable SEM imaging.

Fig. 2
Fig. 2

Extinction spectra of (a) plasma-treated and alkanethiol-functionalized gold nanocrystal films, (b) HT, (c) DDT, and (d) ODT.

Fig. 3
Fig. 3

Plasmon peak shift Δ λ LSPR (nm) upon functionalization versus the number of carbon atoms N C in the relevant alkanethiol (HT, 6 C atoms; DDT, 12 C atoms; ODT, 18 C atoms).

Fig. 4
Fig. 4

Spectra before and after functionalization with ODT from solution. The inset shows a scanning electron micrograph of a selected area of the particle film after functionalization.

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