Spectroscopic properties of noble metal nano-particles covered with J-aggregates of cyanine dye

Chemistry Letters

Volumn , Issue 5, 2001, Pages 402-403

  Sato, Tomoo ^a   Tsugawa, Fusahiro ^a   Tomita, Toshinori ^a   Kawasaki, Mitsuo ^a  

^a KYOTO UNIVERSITY   (Japan)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 0035533853     PISSN: 03667022     EISSN: None     Source Type: Journal    
DOI: 10.1246/cl.2001.402     Document Type: Article

References (16)

1. D. Möbius, Adv. Mater., 7, 437 (1995).
2. "J-Aggregates," ed. by T. Kobayashi, World Scientific, Singapore (1996).
3. M. Kawasaki and H. Ishii, J. Imaging Sci. Tech., 39, 210 (1995).
4. A. M. Glass, P. F. Liao, J. G. Bergman, and D. H. Olson, Opt. Lett., 5, 368 (1980).
5. H. G. Craighead and A. M. Glass, Opt. Lett., 6, 248 (1981).
6. S. Garoff, D. A. Weitz., T. J. Gramila, and C. D. Hanson, Opt. Lett., 6, 245 (1981).
7. F. R. Aussenegg, A. Leitner, M. E. Lippitsh, H. Reinisch, and M. Riegler, Surf. Sci., 189/190, 935 (1987).
8. J. A. Creighton, C. G. Blatchford, and M. G. Albrecht, Trans. Faraday Soc., 75, 790 (1979).
9. T. Sato, T. Ichikawa, T. Ito, Y. Yonezawa, K. Kadono, T. Sakaguchi, and M. Miya, Chem. Phys. Lett., 242, 310 (1995).
10. The selection of dye I, which has sulfopropyl groups, was very important. For example, the adsorption of cationic cyanine dye (pseudo isocyanine), which consists of only the cationic chromophore, introduced further aggregation and precipitation of colloidal silver. Dye 1 is adsorbed in the orientation with the cationic chromophore facing the colloidal silver and the sulfopropyl groups being at the outermost surface. The sulfopropyl groups might prevent the colloidal silver from precipitating.
11. The solutions were prepared by use of a mixed water and ethanol solvent of 1:1 volume ratio.
12. M. Kawasaki and H. Uchiki, Surf. Sci., 388, L1121 (1997).
13. Difference of peak wavelength of surface plasmon band from that of colloidal silver in solution comes from the difference of the particle size, shape and matrix (water or mica/air interface).
14. The preparation method of gold island film covered with dye was almost the same as silver except for immersing KI solution instead of KBr solution for halogenation.
15. On the gold island films, dye II adsorption led to the normal absorption peak by the J-band, although dye I adsorption produced a spectral hole at the position of the J-band.
16. M. Kerker, J. Colloid Interface Sci., 105, 297 (1985).