http://www.cnr.it/ontology/cnr/individuo/prodotto/ID39460
Spontaneous liquifaction of isomerizable molecular crystals. (Articolo in rivista)
- Type
- Label
- Spontaneous liquifaction of isomerizable molecular crystals. (Articolo in rivista) (literal)
- Anno
- 2007-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1063/1.2432345 (literal)
- Alternative label
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Tombari E. (1); Ferrari C. (1); Salvetti G. (1);Johari G.P. (2) (literal)
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- http://jcp.aip.org/ (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
- Rivista
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#note
- Art. No. 021107 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
- Note
- ISI Web of Science (WOS) (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- (1) IPCF - CNR
(2) McMaster Univ, Dept Mat Sci & Engn, Hamilton, ON L8S 4L7 Canada (literal)
- Titolo
- Spontaneous liquifaction of isomerizable molecular crystals. (literal)
- Abstract
- A lattice vacancy raises the energy of the neighboring (flexible) molecule in a crystal, which may be enough to isomerize it to a tautomer that does not fit the lattice site, thus creating a liquidlike local region embedding the vacancy. Similar regions may appear elsewhere in the lattice and the regions may ultimately merge. Thus a crystal may spontaneously liquefy over a period of hours to years at a temperature below its normal melting point. Simultaneous heat capacity and heat absorption measurements of several such molecular crystals show that they spontaneously liquefy at a temperature far below their reputed melting point, according to a non-exponential rate kinetics and a temperature dependent rate constant, and do not crystallize on cooling. (c) 2007 American Institute of Physics. (literal)
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