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
2009-01-01
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 | 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.
