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Structure and Ultrafast Dynamics in Deep Eutectic Solvents

Project description

First-of-its-kind study could reveal the underlying mechanisms in deep eutectic solvents

Deep eutectic solvents are made by mixing two compatible components together to form a resulting liquid product. The melting point is significantly lower than that of each of the individual components. Such solvents have recently emerged as eco-friendly alternatives to harmful ionic liquids that are used in chemical and industrial applications. Despite their potential, experimental investigations into their properties at a molecular level are lacking. Funded by the Marie Skłodowska-Curie Actions programme, the STUDYES project plans to identify the underpinning molecular structures and ultrafast dynamics of deep eutectic solvents for the first time through spectroscopic techniques. Project results will lead to a clearer understanding of how molecular dynamics affect the macroscopic physicochemical properties of such solvents.

Objective

Deep eutectic solvents (DESs) are binary-component mixtures which melt at a temperature that is several tens to a few hundreds of degrees lower than an ideal binary mixture of the same two compounds in the same ratio. DESs are usually environment-friendly solvents that hold great promise for replacing harmful ionic liquids and volatile organic compounds in chemical and industrial applications. Despite this significant potential, experimental investigations of the fundamental molecular-scale properties and dynamics of these solvents are strikingly lacking. This proposal (acronym STUDYES) aims to identify the underpinning molecular structures and ultrafast dynamics of DESs for the first time. Within STUDYES, I will use state-of-the-art ultrafast, non-linear spectroscopic techniques to unravel the real-time structural and dynamical behaviour of these solvents through their molecular vibrations.
I will characterize the ultrafast structural dynamics at the eutectic point of DESs through both temperature- and composition-dependent nonlinear vibrational spectroscopic measurements. The stretching vibrations of the nascent functional groups will be probed in one- and two-dimensional experiments, which will allow a direct visualization of the structural heterogeneities, intermolecular interactions and inter-mode couplings in DESs. I will also investigate the effects of an external agent such as water on the structure and ultrafast dynamics of the DES and identify the critical concentration at which water disrupts the DES structural order. The results of these experiments will provide an important first step to a molecular-level understanding of the special macroscopic physicochemical properties of DESs.

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Keywords

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Programme(s)

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Topic(s)

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Funding Scheme

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MSCA-IF - Marie Skłodowska-Curie Individual Fellowships (IF)

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Call for proposal

Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.

(opens in new window) H2020-MSCA-IF-2018

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Coordinator

STICHTING NEDERLANDSE WETENSCHAPPELIJK ONDERZOEK INSTITUTEN
Net EU contribution

Net EU financial contribution. The sum of money that the participant receives, deducted by the EU contribution to its linked third party. It considers the distribution of the EU financial contribution between direct beneficiaries of the project and other types of participants, like third-party participants.

€ 187 572,48
Total cost

The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.

€ 187 572,48
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