Structural and dynamic properties of di-alkyl sulfoxides-ionic liquids mixtures

• Grant number: 16/10699-0
• Support Opportunities: Scholarships abroad - Research Internship - Doctorate (Direct)
• Start date: October 10, 2016
• End date: October 09, 2017
• Field of knowledge: Physical Sciences and Mathematics - Chemistry - Physical-Chemistry
• Principal Investigator: Paulo Sergio Santos
• Grantee: Jocasta Neves Libório de Avila
• Supervisor: Alessandro Triolo
• Host Institution: Instituto de Química (IQ). Universidade de São Paulo (USP). São Paulo , SP, Brazil
• Institution abroad: Consiglio Nazionale delle Ricerche (CNR), Italy
• Associated to the scholarship: 15/02501-2 - Dimethyl sulfoxide (DMSO) as a probe to intermolecular interactions, BP.DD

Abstract

Dimethyl sulfoxide (DMSO) is a widely spread polar aprotic solvent with enhanced capability of dissolving polar and apolar compounds, whose usage spans from medical to cryo-protection and in general as a powerful dissolution medium. Such properties are the consequences of the substantial dipole moment of sulfoxides as well as its amphiphilic nature. With this proposal, we aim to extend our present study on DMSO structural and dynamical properties in concentrated electrolytic solutions with Raman and 13C NMR spectroscopy, by exploring phase diagram and structural/dynamic properties in DMSO (and its parent compounds: dialkyl sulfoxides) mixtures with ionic liquids, by means of a range of complementary experimental (x-ray/neutron scattering, low frequency Raman and dielectric spectroscopies) and computational (Molecular Dynamics) techniques. (AU)