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Surface enhanced Raman scattering (SERS) effect is currently exploited as the basis of a new type of optical labels for in vivo investigation of the tissues, especially for early medical diagnostic. Silver colloidal nanoparticles decorated with chemisorbed cresyl violet molecular species could act as hybrid SERS labels. Their Raman scattering properties have been characterized here using different SERS techniques, and probing different excitation wavelengths, even in the near infrared. Obtaining FT-SERS signal of cresyl violet is of particular importance for applying FT-Raman spectroscopy to the tissues or cells, in providing sensitive information in the close vicinity of the SERS label incubated into the biological sample. Furthermore, upon chemisorption on the silver nanoparticles, cresyl violet molecular orientation provided both amino functional groups free of interaction with the silver, resulting double amino-functionalized Ag nanoparticles suitable for DNA tagging. SERS tests of melanoma induced in mouse using CV-Ag SERS label suggested the possibility to setup the tissue labeling procedure for skin cancer monitoring.(doi: 10.5562/cca2067

Double Amino Functionalized Ag Nanoparticles as SERS Tags in Raman Diagnostic