Pulsed Laser Deposited Au Nanoparticles as Substrates for Surface-Enhanced Vibrational Spectroscopy

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• 作者：Concepció ; n Domingo ; Vincenzo Resta ; Santiago Sanchez-Cortes ; Jos&eacute ; V. Garcí ; a-Ramos ; Jos&eacute ; Gonzalo
• 刊名：Journal of Physical Chemistry C
• 出版年：2007
• 出版时间：June 14, 2007
• 年：2007
• 卷：111
• 期：23
• 页码：8149 - 8152
• 全文大小：102K
• 年卷期：v.111,no.23(June 14, 2007)
• ISSN：1932-7455

文摘

Gold nanoparticles with enhanced efficiency as substrates for surface-enhanced Raman and infraredspectroscopies have been grown by pulsed laser deposition on glass and CaF₂ substrates. Transmission electronmicroscopy analysis has evidenced the presence of nanoparticles with characteristic sizes of several nanometersin diameter. The capabilities of the produced nanoparticles as enhancer substrates have been investigatedusing the dithiocarbamate fungicide thiram as a test molecule. The enhancement factors and features of SERSand SEIRA spectra are compared to those observed from large Au nanoparticles produced by evaporation athigh temperatures. Slight changes in favor of the new substrates are discussed.