Characterization of ultrafast fluorescence from nanometric carbon particles

DE LISIO, CORRADO and D'ALESSIO, ANTONIO (2006) Characterization of ultrafast fluorescence from nanometric carbon particles. [Pubblicazione su rivista scientifica]

Full text non disponibile da questo archivio.

URL: stacks.iop.org/JOptA/8/S578

Abstract

We present two distinct implementations of the time resolved fluorescence polarization anisotropy (TRFPA) technique for the analysis of carbon nanoparticles collected from laminar laboratory flames and from the exhaust of a gasoline vehicle engine. By exploiting the high time-resolution and the spectral resolution of our TRFPA setups, we could identify two groups of particles, with diameter of 1.4 and 2.2 nm, respectively, within the laminar flame sample. On the other hand, the high time-resolution TRFPA analysis of the gasoline sample led to the identification of two distinct decay channels. The slower one was consistent with a single kind of small particle with diameter of 1.3 nm. Moreover, an analysis of the fast decay versus the temperature allowed us to rule out that it was due to the presence of lighter particles within the sample. Most likely, it is related to the relaxation of internal degrees of freedom.

Tipologia di documento:Pubblicazione su rivista scientifica
Parole chiave:Nanometric particles, Fluorescence anisotropy, Carbon particles
Settori scientifico-disciplinari MIUR:Non specificato
Stato del full text:Accessibilità ristretta
Data:2006
Altri Autori:A. Bruno, C. de Lisio, P. Minutolo, A. D'Alessio
Editore:IOP Publishing Limited:Dirac House, Temple Back, Bristol BS1 6BE United Kingdom:011 44 117 9297481, EMAIL: custserv@iop.org, INTERNET: http://www.iop.org, Fax: 011 44 117 9294318
Numero di pagine:7
Intervallo di pagina:S578-S584
Volume:8
URL:stacks.iop.org/JOptA/8/S578
Dipartimento o Struttura:Dipartimento di Scienze Fisiche
Numero identificativo:10.1088/1464-4258/8/7/S44
Titolo rivista/pubblicazione:JOURNAL OF OPTICS. A, PURE AND APPLIED OPTICS
Numero di sistema:6546
Depositato il:20 Ottobre 2010 10:01
Ultima modifica:20 Ottobre 2010 10:01

Solo per gli Amministratori dell'archivio: edita il record