Εξειδίκευση τύπου :	Άρθρο σε επιστημονικό περιοδικό
Τίτλος:	Robust coherent spin centers from stable azafullerene radicals entrapped in cycloparaphenylene rings
Δημιουργός/Συγγραφέας:	Tanuma, Yuri Stergiou, Anastasios Bužan Bobnar, Andreja Gaboardi, Mattia Rio, Jeremy Volkmann, Jannis Wegner, Hermann A. [EL] Ταγματάρχης, Νίκος[EN] Tagmatarchis, Nikos Ewels, Christopher P. Arčon, Denis
Εκδότης:	Royal Society of Chemistry
Ημερομηνία:	2021-11-15
Γλώσσα:	Αγγλικά
ISSN:	2040-3364 2040-3372
DOI:	10.1039/D1NR06393F
Περίληψη:	Molecular entities with robust spin-1/2 are natural two-level quantum systems for realizing qubits and are key ingredients of emerging quantum technologies such as quantum computing. Here we show that robust and abundant spin-1/2 species can be created in-situ in the solid state from spin-active azafullerene (C59N) cages supramolecularly hosted in crystals of [10]cycloparaphenylene ([10]CPP) nanohoops. This is achieved via a two-stage thermally-assisted homolysis of the parent diamagnetic [10]CPP⊃(C59N)2⊂[10]CPP supramolecular complex. Upon cooling, the otherwise unstable C59N• radical is remarkably persistent with a measured radical lifetime of several years. Additionally, pulsed electron paramagnetic resonance measurements show long coherence times, fulfilling a basic condition for any qubit manipulation, and observed Rabi oscillations demonstrate single qubit operation. These findings together with rapid recent advances on the synthesis of carbon nanohoops offer the potential to fabricate tailored cycloparaphenylene networks hosting C59N• centers, providing a promising platform for building complex qubit circuits.
Τίτλος πηγής δημοσίευσης:	Nanoscale
Τόμος/Κεφάλαιο:	13
Τεύχος:	47
Σελίδες:	19946-19955
Θεματική Κατηγορία:	[EL] Φυσική και θεωρητική χημεία[EN] Physical and theoretical chemistry [EL] Χημική τεχνολογία[EN] Chemical technolgy
Λέξεις-Κλειδιά:	Cycloparaphenylenes Azafullerenes EPR Qubits
EU Grant identifier:	No. P1-0125 No. J1-9145 No. N1-0052 BI-FR/21-22-PROTEUS-003 MIS 5002772 IKYDA 2292
Ηλεκτρονική διεύθυνση στον εκδότη (link):	https://pubs.rsc.org/en/content/articlelanding/2021/NR/D1NR06393F
Σημειώσεις:	Authors would like to thank Alan Gregorovič (Institute Jožef Stefan, Ljubljana, Slovenia) for assistance with NMR experiments. Authors acknowledge help and fruitful discussions with L. Petaccia and J. Plaisier (Sincrotrone Trieste, Trieste, Italy) on the powder XRD results. Eletta is acknowledged for providing in house time on the MCX beamline. Y. T. acknowledges funding from French Government Scholarships and from Inoue Enryo Memorial Grant Toyo University. D. A. acknowledges financial support from the Slovenian Research Agency (Core Research Funding no. P1-0125 and projects no. J1-9145 and no. N1-0052). Y. T., J. R. and C. E. thank the CCIPL (Center de Calculs Intensif Pays de la Loire) where DFT calculations were performed. C. E., J. R., Y. T., N. T. and H. W. acknowledge the Pays de la Loire Pari Scientifique project “NEWTUBE” for funding. D. A. and C. E. acknowledge BI-FR/21-22-PROTEUS-003 project for funding. Support of this work by the project “National Infrastructure in Nanotechnology, Advanced Materials and Micro-/Nanoelectronics” (MIS 5002772), implemented under the “Reinforcement of the Research and Innovation Infrastructures”, funded by the Operational Program “Competitiveness, Entrepreneurship, and Innovation” (NSRF 2014–2020) and co-financed by Greece and the European Union (European Regional Development Fund), is acknowledged. Partial support by the programme for the promotion of the exchange and scientific cooperation between Greece and Germany, IKYDA 2020 (grant number 2292).
Εμφανίζεται στις συλλογές:	Ινστιτούτο Θεωρητικής και Φυσικής Χημείας (ΙΘΦΧ) - Επιστημονικό έργο