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Dielectric measurement of two-dimentionally confined biomolecules at the nanoscale

Project description

A novel platform traps and zaps biomolecules

Molecular polarisability is a measure of a molecule's electron redistribution in response to an electric field. It is an important factor shaping the molecular structure of biomolecules and influencing biochemical reactions. For example, it is instrumental in driving the structure-activity relationships critical to drug discovery. Despite its significance, the polarisation properties of single molecules are difficult to measure due to the resolution of current technologies. The EU-funded Dielec2DBiomolecules project will confine biomolecules in 2D crystals to enable nanometre resolution of their molecular polarisability for the first time.

Objective

Macromolecular organization and interactions have long been recognized to be strongly influenced by electrostatic and electrodynamics interactions which in turn depend on the molecular polarizability. In particular, molecular polarization plays a fundamental role in the molecular structure of biomolecules like DNA and proteins. Yet, this physical property of biomolecules has remained almost unexplored so far because measurements on the molecular scale are a technical challenge. Previous experimental work mostly relied on standard approaches as such broadband dielectric spectroscopy which are limited to the micrometer scale and, therefore, cannot resolve the polarization properties of single molecules. Hence, new experimental approaches are needed to measure the polarizability of molecules at molecular level. In this project, we will tackle this important issue and develop a novel experimental platform that will allow to access for the first time the polarizability of biomolecules under two-dimensional (2D) confinement. This will be achieved by coupling two novel technologies of nanoscience: scanning dielectric microscopy, a recently developed scanning probe technique, and the 2D-materials technology. We will engineer novel 2D liquid cells by assembling 2D crystals, and we will measure the dielectric properties of the biomolecules confined inside using a scanning probe. This is an ambitious experimental research with a strong interdisciplinary and groundbreaking nature, based on the powerful combination of new microscopic approaches with novel 2D materials. The developed platform will access previously unknown physical properties of biomolecules that are crucial to understand their behaviour. It will provide much-needed feedback for first-principles and mean-field theories and allow a better understanding of biomolecular structure and functions.

Fields of science (EuroSciVoc)

Programme(s)

Topic(s)

Funding Scheme

MSCA-IF-EF-ST - Standard EF

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Call for proposal

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

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Coordinator

THE UNIVERSITY OF MANCHESTER
Net EU contribution
€ 224 933,76
Address
OXFORD ROAD
M13 9PL Manchester
United Kingdom
Region
North West (England) Greater Manchester Manchester
Activity type
Higher or Secondary Education Establishments
Links
Total cost
€ 224 933,76