The structure of choline-amino acid ionic liquids, atoxic task-specific solvents composed of materials originated from renewable feedstocks, is reviewed in this letter. The varied and strong interactions that these liquids are capable of establishing are largely dependent on their structure and confer them outstanding solvating properties with respect to a large number of different solutes. Among the experimental methods capable of yielding structural insight, the energy-dispersive version of X-Ray diffraction, that uses the Bremsstrahlung radiation of the X-Ray tube, is a technique very well suited to investigate these liquid systems. The diffraction spectra of five choline-amino acid ionic liquids, recently measured, are reported and discussed; in particular, the presence or absence of the medium-range order pre-peak is related to the presence of polar groups within the amino acid side chain that destroys the hydrophobic interactions between aliphatic chains. In the final section, a recent example of choline-amino acid ionic liquids as for ancient paper preservation and two other interesting results are discussed at the end

Gontrani, L. (2018). Choline-amino acid ionic liquids: past and recent achievements about the structure and properties of these really "green" chemicals. BIOPHYSICAL REVIEWS, 10(3), 873-880 [10.1007/s12551-018-0420-9].

Choline-amino acid ionic liquids: past and recent achievements about the structure and properties of these really "green" chemicals

Gontrani L.
Writing – Original Draft Preparation
2018-01-01

Abstract

The structure of choline-amino acid ionic liquids, atoxic task-specific solvents composed of materials originated from renewable feedstocks, is reviewed in this letter. The varied and strong interactions that these liquids are capable of establishing are largely dependent on their structure and confer them outstanding solvating properties with respect to a large number of different solutes. Among the experimental methods capable of yielding structural insight, the energy-dispersive version of X-Ray diffraction, that uses the Bremsstrahlung radiation of the X-Ray tube, is a technique very well suited to investigate these liquid systems. The diffraction spectra of five choline-amino acid ionic liquids, recently measured, are reported and discussed; in particular, the presence or absence of the medium-range order pre-peak is related to the presence of polar groups within the amino acid side chain that destroys the hydrophobic interactions between aliphatic chains. In the final section, a recent example of choline-amino acid ionic liquids as for ancient paper preservation and two other interesting results are discussed at the end
2018
Pubblicato
Rilevanza internazionale
Recensione
Esperti anonimi
Settore CHIM/02 - CHIMICA FISICA
English
Choline-amino acid ionic liquids; EDXD; Ion pairs; Pre-peak; Renewable material
Gontrani, L. (2018). Choline-amino acid ionic liquids: past and recent achievements about the structure and properties of these really "green" chemicals. BIOPHYSICAL REVIEWS, 10(3), 873-880 [10.1007/s12551-018-0420-9].
Gontrani, L
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/294739
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