TY - JOUR
T1 - Room-Temperature Spin-Dependent Transport in Metalloporphyrin-Based Supramolecular Wires
AU - Aragonès, Albert C.
AU - Martín-Rodríguez, Alejandro
AU - Aravena, Daniel
AU - di Palma, Giuseppe
AU - Qian, Wenjie
AU - Puigmartí-Luis, Josep
AU - Aliaga-Alcalde, Núria
AU - González-Campo, Arántzazu
AU - Díez-Pérez, Ismael
AU - Ruiz, Eliseo
N1 - Funding Information:
The research reported here was supported by the Spanish Ministerio de Ciencia, e Innovación (grants PGC2018‐093863‐B‐C21, PID2019‐108794GB‐100 and MDM‐2017‐0767) and the ERC Grants Fields4CAT (grant 772391) and Tmol4TRANS (grant 724981). I.D.‐P. thanks King's College London for start‐up funds support. A.C.A. thanks the European Union for a H2020‐MSCA‐IF‐2018 Fellowship (TECh‐MoDE, 844668). A.M.R. thanks the Ministerio de Ciencia, e Innovación for a predoctoral FPI grant. E.R. thanks Generalitat de Catalunya for an ICREA Academia award and for the SGR2017‐1289 grant. N.A.‐A. and A.G.‐C. thank the Generalitat de Catalunya for the grant 2017SGR1277 and the Severo Ochoa Program for Centers of Excellence in R&D (FUNFUTURE, CEX2019‐000917‐S). A.G.C. thanks Ministerio de Ciencia e Innovación for Ramon y Cajal grant (RYC‐2017‐22910). The authors acknowledge the general facilities of the Universitat de Barcelona (CCiT‐UB) and the computer resources, technical expertise and assistance provided by the Barcelona Supercomputing Centre.
Funding Information:
The research reported here was supported by the Spanish Ministerio de Ciencia, e Innovaci?n (grants PGC2018-093863-B-C21, PID2019-108794GB-100 and MDM-2017-0767) and the ERC Grants Fields4CAT (grant 772391) and Tmol4TRANS (grant 724981). I.D.-P. thanks King's College London for start-up funds support. A.C.A. thanks the European Union for a H2020-MSCA-IF-2018 Fellowship (TECh-MoDE, 844668). A.M.R. thanks the Ministerio de Ciencia, e Innovaci?n for a predoctoral FPI grant. E.R. thanks Generalitat de Catalunya for an ICREA Academia award and for the SGR2017-1289 grant. N.A.-A. and A.G.-C. thank the Generalitat de Catalunya for the grant 2017SGR1277 and the Severo Ochoa Program for Centers of Excellence in R&D (FUNFUTURE, CEX2019-000917-S). A.G.C. thanks Ministerio de Ciencia e Innovaci?n for Ramon y Cajal grant (RYC-2017-22910). The authors acknowledge the general facilities of the Universitat de Barcelona (CCiT-UB) and the computer resources, technical expertise and assistance provided by the Barcelona Supercomputing Centre.
Publisher Copyright:
© 2021 The Authors. Angewandte Chemie International Edition published by Wiley-VCH GmbH
PY - 2021/12/1
Y1 - 2021/12/1
N2 - Here we present room-temperature spin-dependent charge transport measurements in single-molecule junctions made of metalloporphyrin-based supramolecular assemblies. They display large conductance switching for magnetoresistance in a single-molecule junction. The magnetoresistance depends acutely on the probed electron pathway through the supramolecular wire: those involving the metal center showed marked magnetoresistance effects as opposed to those exclusively involving the porphyrin ring which present nearly complete absence of spin-dependent charge transport. The molecular junction magnetoresistance is highly anisotropic, being observable when the magnetization of the ferromagnetic junction electrode is oriented along the main molecular junction axis, and almost suppressed when it is perpendicular. The key ingredients for the above effect to manifest are the electronic structure of the paramagnetic metalloporphyrin, and the spinterface created at the molecule–electrode contact.
AB - Here we present room-temperature spin-dependent charge transport measurements in single-molecule junctions made of metalloporphyrin-based supramolecular assemblies. They display large conductance switching for magnetoresistance in a single-molecule junction. The magnetoresistance depends acutely on the probed electron pathway through the supramolecular wire: those involving the metal center showed marked magnetoresistance effects as opposed to those exclusively involving the porphyrin ring which present nearly complete absence of spin-dependent charge transport. The molecular junction magnetoresistance is highly anisotropic, being observable when the magnetization of the ferromagnetic junction electrode is oriented along the main molecular junction axis, and almost suppressed when it is perpendicular. The key ingredients for the above effect to manifest are the electronic structure of the paramagnetic metalloporphyrin, and the spinterface created at the molecule–electrode contact.
KW - density functional calculations
KW - magnetoresistance
KW - metalloporphyrins
KW - single-molecule junctions
KW - spinterface
UR - http://www.scopus.com/inward/record.url?scp=85118363372&partnerID=8YFLogxK
U2 - 10.1002/anie.202110515
DO - 10.1002/anie.202110515
M3 - Article
AN - SCOPUS:85118363372
SN - 1433-7851
VL - 60
SP - 25958
EP - 25965
JO - Angewandte Chemie - International Edition
JF - Angewandte Chemie - International Edition
IS - 49
ER -