http://www.cnr.it/ontology/cnr/individuo/prodotto/ID48314
Vibrational and electronic properties of painting lakes (Articolo in rivista)
- Type
- Label
- Vibrational and electronic properties of painting lakes (Articolo in rivista) (literal)
- Anno
- 2008-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1007/s00339-008-4474-6 (literal)
- Alternative label
Clementi, C.; Doherty, B.; Gentili, P. L.; Miliani, C.; Romani, A.; Brunetti, B. G.; Sgamellotti, A. (2008)
Vibrational and electronic properties of painting lakes
in Applied physics. A, Materials science & processing (Print)
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Clementi, C.; Doherty, B.; Gentili, P. L.; Miliani, C.; Romani, A.; Brunetti, B. G.; Sgamellotti, A. (literal)
- Pagina inizio
- Pagina fine
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
- Rivista
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#note
- DOI: 10.1007/s00339-008-4474-6 (literal)
- Note
- ISI Web of Science (WOS) (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- Clementi, C.; Doherty, B.; Gentili, P. L.; ; Romani, A.; Brunetti, B. G.; Sgamellotti, A. Univ Perugia, Dept Chem, I-06123 Perugia, Italy
Miliani, C. CNR-ISTM (literal)
- Titolo
- Vibrational and electronic properties of painting lakes (literal)
- Abstract
- Naturally occurring dyes have been used to produce painting pigments,
called lakes, by precipitation or adsorption of an organic dyestuff
onto an insoluble inorganic substrate. Most natural dyes link to metal
cations, by means of coordination bonds. The stable complexes formed
precipitate together with solid amorphous hydrous aluminum oxide in
alkaline solutions, yielding a hybrid material called a lake.
Conventional chromatographic methods for lake analysis require dye
extraction from the substrate; as a consequence, they do not provide
any information about the organo-metallic complexes. In this work a
comprehensive investigation based on X-ray fluorescence, Fourier
transform infrared and UV-visible absorption and emission
spectroscopies was carried out on 13 organic pigments derived from
eight different natural sources. Three different kinds of substrate
containing aluminum hydroxide were distinguished dependent on different
preparation procedures. Information concerning the recipe and the dye
composition was obtained by UV-visible spectroscopies. Dyes from
different sources (animal or vegetal) could be distinguished. This
study shows that the combined use of different spectroscopic techniques
provides complementary information to high-performance liquid
chromatography and therefore can be proposed for a molecular
non-invasive investigation of these materials on works of art. (literal)
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- Autore CNR
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