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Synthesis, Supramolecular Chemistry and Physics of Molecular Quantum Rings

Ziel

This project will investigate the chemistry and physics of molecular quantum rings with radii of 1–10 nm. A quantum ring is a nanostructure that confines electrons to a circular path resulting in unique quantum mechanical behavior. Quantum rings made from metals and semiconductors with radii of 10–500 nm are widely studied. Small aromatic molecules, with radii less than 1 nm, also behave like quantum rings. We will study coherently delocalized rings of intermediate size, that bridge the gap between small molecules and top-down nanostructures. Quantum rings of this size have scarcely been investigated.

We focus on two types of macrocycles: (a) cyclocarbons, i.e. molecular rings consisting only of carbon, and (b) triple strand edge-fused porphyrin nanobelts.

Cyclocarbons have previously been studied in the gas phase and on surfaces at cryogenic temperatures. Recently, we made the surprising discovery that they can be studied in solution at room temperature. We will synthesize supramolecular receptors for encapsulating and stabilizing them, so that their properties can be fully investigated in solution and in the solid state.

Porphyrin nanobelts are the largest neutral molecules to exhibit global ring currents. Nanobelts with many paramagnetic metal centers are expected to exhibit collective delocalized spin waves, with potential applications in quantum technologies. Möbius nanobelts will be synthesized to explore how a twist introduces a phase shift and switches the magnetic behavior.

All these rings will be investigated in multiple oxidation states, to test the effects of adding or removing electrons, focusing on the less-studied 4n+1 and 4n+3 states. The project combines organic synthesis, supramolecular chemistry, computational simulations, NMR and EPR spectroscopy and magnetochemistry. The core objective is to create molecular materials with unprecedented emergent electronic and magnetic properties and to understand their structure-property relationships.

Wissenschaftliches Gebiet (EuroSciVoc)

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Finanzierungsplan

HORIZON-ERC - HORIZON ERC Grants

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Aufforderung zur Vorschlagseinreichung

(öffnet in neuem Fenster) ERC-2025-ADG

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Gastgebende Einrichtung

THE CHANCELLOR, MASTERS AND SCHOLARS OF THE UNIVERSITY OF OXFORD
Netto-EU-Beitrag
€ 2 498 646,00
Adresse
WELLINGTON SQUARE UNIVERSITY OFFICES
OX1 2JD Oxford
Vereinigtes Königreich
Region
South East (England) Berkshire, Buckinghamshire and Oxfordshire Oxfordshire
Aktivitätstyp
Higher or Secondary Education Establishments
Links
Gesamtkosten
Keine Daten

Begünstigte (1)