Photo-induced production of sp-hybridized carbon species from Ag-coated polytetrafluoro ethylene (PTFE)
Articolo
Data di Pubblicazione:
2005
Citazione:
Photo-induced production of sp-hybridized carbon species from Ag-coated polytetrafluoro ethylene (PTFE) / L. Ravagnan, F. Siviero, C. S. Casari, A. L. Bassi, C. Lenardi, C. E. Bottani, P. Milani. - In: CARBON. - ISSN 0008-6223. - 43:6(2005), pp. 1337-1339.
Abstract:
Carbon solids based on sp hybridization, although
subject of intense experimental efforts, seem to be the
most elusive of the different carbon families [1]. The existence
of linear chains of carbon atoms linked by alternating
single and triple bonds (polyyne) or double
bonds (polycumulene) with stabilizing molecular complexes
at the end of the chains, has been recognized in
interstellar molecular clouds and can be artificially produced
by different chemical routes [2].
Polyyne and polycumulene chains are very reactive:
exposure to oxygen and/or water completely destroys
these species [1], and at room temperature they spontaneously
undergo chain–chain cross-linking reaction,
evolving towards an sp2 phase [2]. Isolated carbon
chains have been extensively studied only in the gas
phase [3] or by means of matrix isolation spectroscopy
at very low temperature [4].
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
Carbyne; Catalyst; Laser irradiation; Raman spectroscopy
Elenco autori:
L. Ravagnan, F. Siviero, C. S. Casari, A. L. Bassi, C. Lenardi, C. E. Bottani, P. Milani
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