Skip to main content
Go to the home page of the European Commission (opens in new window)
English en
CORDIS - EU research results
CORDIS

Harnessing Ostwald Ripening for Dynamic Emulsions

Project description

Controlling chemical exchange in synthetic compartments

Life depends on tightly regulated exchange of molecules between cells and organelles. This is mediated by diffusion as well as specialised biological machinery. Systems chemistry aims to recreate this complexity using synthetic compartments, but a major challenge is controlling how molecules move between them. To regulate diffusion, the ERC-funded HORDE project will harness a physical process called Ostwald ripening, where molecules diffuse from smaller to larger droplets. By using a variety of techniques, the research team will create droplets that grow or shrink on demand. This will enable the controlled transfer of molecular information and pave the way for advanced synthetic compartments.

Objective

Controlling the exchange of material between organs, cells and organelles is essential for all of the processes essential to life, such as signalling, metabolism and reproduction. Chemicals pass between compartments by diffusion, which is often assisted or rectified by biological machinery. A central goal of Systems Chemistry is to produce networks of discrete synthetic compartments that interact with the same complexity seen in life. Key to achieving this is the ability to control and regulate diffusion. The HORDE programme will harness Ostwald ripening as a tool that will enable controlled diffusion within emulsions.

Ostwald ripening is the net directional diffusion of molecules from less to more stable states. In emulsions, this results in a spontaneous increase of average droplet size. This is thermodynamically favourable as it reduces the disfavoured liquid-liquid interface area. Ostwald ripening is generally seen as an unwanted process as it can lead to emulsion deterioration. However, when controlled, it will prove a powerful method for directing diffusion between compartments. HORDE will address this gap of knowledge by developing the novel methodology and insight that enables Ostwald ripening to be toggled and reversed. We will apply dynamic chemistries, switchable costabilisers and reversible polymerisation to control nanoemulsions.

I will apply my unique expertise that spans supramolecular chemistry and polymer nanotechnology to develop nanoemulsions with droplets that shrink or grow on demand. We will then apply this technology to generate nonequilibrium states and direct the transfer of polymer sequence information between droplets. The HORDE programme will thus demonstrate the exceptional promise of controlled Ostwald ripening as a mechanism for developing complex networks of interacting compartments. This ERC Starting Grant will establish the Fielden group as world leaders in developing responsive nanoscale systems.

Fields of science (EuroSciVoc)

Keywords

Programme(s)

Topic(s)

Funding Scheme

HORIZON-ERC - HORIZON ERC Grants

See all projects funded under this funding scheme

Call for proposal

(opens in new window) ERC-2025-STG

See all projects funded under this call

Host institution

THE UNIVERSITY OF BIRMINGHAM
Net EU contribution
€ 1 891 138,00
Address
Edgbaston
B15 2TT Birmingham
United Kingdom
Region
West Midlands (England) West Midlands Birmingham
Activity type
Higher or Secondary Education Establishments
Links
Total cost
€ 1 891 138,00

Beneficiaries (1)