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Your search keyword '"Celebre, Giorgio"' showing total 5 results
Start Over Author "Celebre, Giorgio" Topic chemicals, plastics and rubber industries
5 results on '"Celebre, Giorgio"'

1. Multitechnique investigation of conformational features of small molecules: the case of methyl phenyl sulfoxide

Author

Celebre, Giorgio, Cinacchi, Giorgio, De Luca, Guiseppina, Giuliano, Barbara M., Iemma, Francesca, and Melandri, Sonia

Subjects
Methyl groups -- Chemical properties, Nuclear magnetic resonance -- Usage, Quantum chemistry -- Research, Chemicals, plastics and rubber industries
Abstract

The study of conformational distribution of methyl phenyl sulfoxide is carried out using NMR in liquid crystal solvents and quantum chemical calculations. The results show the tendency of the molecule to favor conformations due to intramolecular interaction, where the conjugation energy results in its stabilization.

Published
2008

3. Orientational mechanisms in liquid crystalline systems. 2. The contribution to solute ordering from the reaction field interaction between the solute electric quadrupole moment and the solvent electric field gradient

Author

Celebre, Giorgio and Ionescu, Andreea

Subjects
Electrostatic interactions -- Analysis, Liquid crystals -- Structure, Liquid crystals -- Chemical properties, Liquid crystals -- Electric properties, Nuclear magnetic resonance spectroscopy -- Usage, Benzene -- Structure, Benzene -- Chemical properties, Electric fields -- Analysis, Chemicals, plastics and rubber industries
Published
2010

4. An explicit relationship between the dielectric anisotropy and the average electric field gradient in nematic solvents

Author

Celebre, Giorgio

Subjects
Anisotropy -- Analysis, Electric fields -- Research, Twisted nematic liquid crystal displays -- Electric properties, Chemicals, plastics and rubber industries
Abstract

The interaction between the electric quadrupole moment of a probe-solute and the average electric field gradient (EFG) of the nematic medium is investigated and a method is proposed to assess the correlation between the EFG and the macroscopic properties of the nematic medium. It is demonstrated that a direct relationship exist between the EFG of a nematic solvent and the dielectric permittivity of the medium and also with the quadrupole moment of the solute.

Published
2007

5. Short-range molecular interactions governing the orientational ordering of apolar molecules dissolved in nematic solvents

Author

Celebre, Giorgio and De Luca, Giuseppina

Subjects
Dissociation -- Research, Molecular dynamics -- Research, Chemistry, Physical and theoretical -- Research, Chemicals, plastics and rubber industries
Abstract

A model carried out the ordering of apolar molecules dissolved in uniaxial mesophases where the interactions between the solute and the local medium were described on a molecular scale. The proposed model proved to be highly reliable and very effective tool for the description of orientational order when short-range interactions totally control the solute ordering.

Published
2003

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