Surface Enhanced Raman Spectroscopy (SERS) is exploited here to investigate the interaction of isolated sp carbon chains (polyynes) in a methanol solution with silver nanoparticles. Hydrogen-terminated polyynes show a strong interaction with silver colloids used as the SERS active medium revealing a chemical SERS effect. SERS spectra after mixing polyynes with silver colloids show a noticeable time evolution. Experimental results, supported by density functional theory (DFT) calculations of the Raman modes, allow us to investigate the behavior and stability of polyynes of different lengths and the overall sp conversion towards sp2 phase.

sp Carbon chain interaction with silver nanoparticles probed by Surface Enhanced Raman Scattering

LUCOTTI, ANDREA;CASARI, CARLO SPARTACO;TOMMASINI, MATTEO MARIA SAVERIO;LI BASSI, ANDREA;FAZZI, DANIELE;RUSSO, VALERIA;DEL ZOPPO, MIRELLA ELVIRA ANGELA;CASTIGLIONI, CHIARA;BOTTANI, CARLO ENRICO;ZERBI, GIUSEPPE
2009

Abstract

Surface Enhanced Raman Spectroscopy (SERS) is exploited here to investigate the interaction of isolated sp carbon chains (polyynes) in a methanol solution with silver nanoparticles. Hydrogen-terminated polyynes show a strong interaction with silver colloids used as the SERS active medium revealing a chemical SERS effect. SERS spectra after mixing polyynes with silver colloids show a noticeable time evolution. Experimental results, supported by density functional theory (DFT) calculations of the Raman modes, allow us to investigate the behavior and stability of polyynes of different lengths and the overall sp conversion towards sp2 phase.
File in questo prodotto:
File Dimensione Formato  
Lucotti-CPL2009-polyyne.pdf

Accesso riservato

: Altro materiale allegato
Dimensione 1.16 MB
Formato Adobe PDF
1.16 MB Adobe PDF   Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11311/545436
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 36
  • ???jsp.display-item.citation.isi??? 35
social impact