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-Photo-switchable 2D COFs for Controlling Directional Charge Transport

Project description

Light-switchable frameworks for future electronics

Imagine electronics that physically morph in response to light. Photo-responsive materials are expected to revolutionise how we build everything from sensors to adaptive circuits. However, the main bottleneck is the design of stable crystalline materials that can shift their geometry on command and return to their original state. Supported by the Marie Skłodowska-Curie Actions programme, the SwitchCOF project is developing flexible two-dimensional covalent organic frameworks (COFs) that incorporate photoswitchable components. Using experimental and theoretical approaches, the project will test how light-induced structural changes influence electronic coupling and transport properties. Ultimately, SwitchCOF aims to support future optoelectronic technologies.

Objective

Crystalline, photo-switchable frameworks enable the precise arrangement of functional building blocks with tuneable structural and physical properties. By permitting remote control over framework geometry, and thereby over intra- and intermolecular ordering and electronic coupling, they offer a transformative basis for advancing (opto)electronics. However, compatible framework designs that realise structural changes under illumination remain scarce, as photoswitch operation is often significantly hindered in confined spaces.

SwitchCOF aims to overcome these limitations by creating crystalline frameworks whose geometries can be reversibly switched by light. The project introduces a novel strategy based on two-dimensional (2D) flexible covalent organic frameworks (COFs), incorporating photoswitches such as azo(hetero)arenes, which toggle the framework geometry between distinct states and thereby enable non-invasive spatiotemporal control over charge transport in both in-plane and out-of-plane directions.

This will be achieved through three complementary approaches: employing photoswitch-modified building blocks (nodes and bridges) in flexible 2D COFs, and combining theoretical and experimental methods to elucidate directional charge transport in distinct light-induced states.

SwitchCOF will advance fundamental knowledge in reticular chemistry by establishing a new paradigm for constructing light-responsive 2D COFs, and in (opto)electronics by uncovering structure–electronic coupling mechanisms through light-induced, precise control over intrinsic framework transformations.

Fields of science (EuroSciVoc)

Keywords

Programme(s)

Topic(s)

Funding Scheme

HORIZON-TMA-MSCA-PF-EF - HORIZON TMA MSCA Postdoctoral Fellowships - European Fellowships

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Call for proposal

(opens in new window) HORIZON-MSCA-2025-PF

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Coordinator

MAX-PLANCK-GESELLSCHAFT ZUR FORDERUNG DER WISSENSCHAFTEN EV
Net EU contribution
€ 217 965,12
Address
HOFGARTENSTRASSE 8
80539 MUNCHEN
Germany
Region
Berlin Berlin Berlin
Activity type
Research Organisations
Links
Total cost
No data