Descripción del proyecto
Averiguar por qué las moléculas quirales actúan como filtros de espín electrónico
Las moléculas quirales presentan dos simetrías diferentes, similares a la lateralidad diestra o siniestra, denominadas «enantiómeros». Al moverse a través de moléculas quirales, los electrones se comportan como si existiera un campo magnético actuando sobre ellos. Dicho campo interactúa con su espín; cuando un electrón se transfiere a través de moléculas quirales, un espín tiene preferencia sobre el otro, según la lateralidad de las moléculas y la dirección del movimiento del electrón. Esta selectividad de espín provocada por los quirales tiene importantes repercusiones en la química, tales como un mejor control de las reacciones enantioselectivas y una separación más sencilla de los enantiómeros. El equipo del proyecto CISSE, financiado por las Acciones Marie Skłodowska-Curie, creará una colaboración interdisciplinar entre investigadores europeos, estadounidenses e israelíes para estudiar los mecanismos subyacentes de este efecto.
Objetivo
Chirality is often considered as a structural properties of molecules, but the concept also applies to elementary particles having a non-zero spin, i.e. electrons at rest are achiral but they acquire a helicity (chirality) in the direction of motion. Consequently, electrons are filtered according to their spin when crossing chiral materials. This newly uncovered chiral-induced spin selectivity (CISS) effect is surprisingly large. Spin polarization up to 100% has been demonstrated paving the way to multiple applications in chemistry, such as improved control of enantioselective reactions and easier separation of enantiomers. Impacts are also expected in physics (spintronics) and biology (molecular recognition of biomolecules, origin of bio-homo-chirality, magnetic compass of migratory songbirds). CISS effect is theoretically ill-defined. Sound structure-property relationship lacks also for the link between molecule chirality and CISS effect magnitude. CISSE proposal intends to contribute to a giant leap forward in the knowledge of CISS effect by putting together some of the best European, American and Israeli experts of the field, who will work towards its fundamental understanding. To this end, members of the CISSE consortium have been selected for their expertise and complementarities encompassing: synthetic chemistry, electrochemistry, surface science, bio-physical chemistry, quantum chemistry, nanoscience, industrial processes, analytical chemistry, and scientific instrument developments. Importantly, some beneficiaries have filled the first patent applications on CISS effect and have started to valorize them. Considerable scope for new discoveries and invention remains because the field of CISS effect is still in its infancy. The topic is particularly suited to educate ESRs because of its novelty and potential. To gain a different perspective on their research activities, ESRs will also contribute to an artistic creation highlighting spin and chirality.
Ámbito científico
Palabras clave
Programa(s)
- HORIZON.1.2 - Marie Skłodowska-Curie Actions (MSCA) Main Programme
Régimen de financiación
HORIZON-TMA-MSCA-DN - HORIZON TMA MSCA Doctoral NetworksCoordinador
1050 Bruxelles / Brussel
Bélgica