Journal
RSC ADVANCES
Volume 10, Issue 40, Pages 23682-23689Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d0ra04525j
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Funding
- University of Geneva
- Swiss National Science Foundation [PZ00P2_174116]
- Swiss National Science Foundation (SNF) [PZ00P2_174116] Funding Source: Swiss National Science Foundation (SNF)
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Characterization of propyl acetate/butyronitrile (PA/BuCN) mixtures by various spectroscopic techniques is described. The neat solvents have identical viscosities and refractive indices but their dielectric constants differ significantly. Detailed solvatochromic and titration data show that the mixtures do not exhibit specific solute-solvent interactions or significant dielectric enrichment effects. Therefore, the mixtures are ideally suited for investigating the effect of dielectric stabilization on (photo)chemical reactions. Dynamic Stokes shift experiments performed on two push-pull probes demonstrate that the solvation dynamics are significantly decelerated in the mixtures as compared to the neat solvents. Therefore, the mixtures allow for varying both the extent and time scale of the dielectric stabilization in a predictable manner.
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