Modulation of the photophysical properties of gold nanoparticles by accurate control of the surface coverage

Langmuir

Volumn 20, Issue 18, 2004, Pages 7884-7886

  Montalti, Marco ^a   Prodi, Luca ^a   Zaccheroni, Nelsi ^a   Battistini, Gionata ^a  

^a UNIVERSITY OF BOLOGNA   (Italy)

Author keywords

[No Author keywords available]

Indexed keywords

FLUORESCENCE SPECTROSCOPY; NANOPARTICLES; PHOTOPHYSICAL PROPERTIES; UV-VIS SPECTROSCOPY;

ABSORPTION SPECTROSCOPY; FLUORESCENCE; GOLD; PHOTOCHEMICAL REACTIONS; SPECTROPHOTOMETERS; SYNTHESIS (CHEMICAL); TRANSMISSION ELECTRON MICROSCOPY; ULTRAVIOLET SPECTROSCOPY;

NANOSTRUCTURED MATERIALS;

FLUORESCENCE; GOLD; PHOTOCHEMISTRY; PHOTOMETERS; SPECTROMETERS; SYNTHESIS; TRANSMISSION ELECTRON MICROSCOPY; ULTRAVIOLET SPECTROSCOPY;

EID: 4444288161     PISSN: 07437463     EISSN: None     Source Type: Journal    
DOI: 10.1021/la0491044     Document Type: Article

References (22)

1. Brust, M.; Walker, M.; Bethell, D.; Schiffrin, D. J.; Whyman, R. J. Chem. Soc., Chem. Commun. 1994, 801.
2. (a) Thomas, K. J.; Kamat, P. Acc. Chem. Res. 2003, 36, 888.
3. (b) Shenhar, R.; Rotello, V. M. Acc. Chem. Res. 2003, 36, 549.
4. Templeton, A. C.; Wuelfing, W. P., Murray, R. W. Acc. Chem. Res. 2000, 33, 27.
5. Labande, A.; Astruc, D. Chem. Soc., Chem. Commun. 2000, 1007.
6. (e) Patolsky, F.; Ranjit, K. T.; Lichtenstein, A.; Willner, I. Chem. Soc., Chem. Commun. 2000, 1025.
7. (f) Chen, S. J. Phys. Chem. B 2000, 104, 663.
8. (g) Fitzmaurice, D.; Rao S. N.; Stoddart, J. F.; Wenger, S.; Zaccheroni, N. Angew. Chem., Int. Ed. 1999, 38, 1147.
9. (a) Kamat, P. V.; Barazzouk, S.; Hotchandani, S. Angew. Chem., Int. Ed. 2002, 41, 2764.
10. (b) Chen, M. M. Y.; Katz, A. Langmuir 2002, 18, 2413.
11. Wang, T.; Zhang, D.; Xu, W.; Yang, J.; Han, R.; Zhu, D. Langmuir 2002, 18, 1840.
12. Werts, M. H. V.; Zaim, H.; Blanchard-Desce M. Photochem. Photobiol. Sci. 2004, 3, 29.
13. Credi, A.; Prodi, L. Spectrochim. Acta, Part A 1998, 54, 159.
14. Montalti, M.; Prodi, L.; Zaccheroni, N.; Baxter, R.; Teobaldi, G.; Zerbetto, F. Langmuir 2003, 19, 5172.
15. - in the absence of stabilizing thiols have tetraoctylammonium bromide (TOAB) weakely bound to the surface.
16. Ipe, B. I.; Thomas, K. G.; Barazzouk, S.; Hotohandani, S.; Kamat, P. V. J. Phys. Chem. B 2002, 106, 18.
17. Each pair of points in Figure 1 (triangle and filled circles) correspond in fact to two solutions which have the same absorption at the excitation wavelength and at the emission wavelength. As a consequence their comparison allows a direct quantitative evaluation of the degree of quenching of 1 because of the interaction with the gold nanoclusters (see ref 4).
18. The linkage of the thiol to the gold nanoparticles takes place in less than 1 min.
19. (a) Lakowicz, J. R. Principles of Fluorescence Spectroscopy; Kluwer Academic/Plenum Publishers: New York, 1999.
20. (b) Valeur, B. New Trends in Fluorescence Spectroscopy: Applications to Chemical and Life Sciences; Wiley VCH: Weinheim, 2001.
21. Prodi, L.; Ballardini, R.; Gandolfi, M. T.; Roversi, R. J. Photochem. Photobiol., A 2000, 136, 49.
22. Since the interaction may involve more than just a pair of fluorophores, the use of the term "dimer" could be inappropriate.