Engineering 2D spin networks by on-surface encapsulation of azafullerene radicals in nanotemplates

Kladnik, Gregor (avtor), Bavdek, Gregor (avtor), Arčon, Denis (avtor), Cvetko, Dean (avtor)

We present an efficient strategy for on-surface engineering of organic metal-free supramolecular complexes with long-term spin protection. By vacuum deposition of azafullerene (C$_{59}$N$^•$) monomers on a pre-deposited template layer of [10]cycloparaphenylene ([10]CPP) nanohoops on Au(111) surface we exploit the molecular shape matching between the C$_{59}$N$^•$ and [10]CPP for the azafullerene encapsulation with nanohoops in a guest-host complexation geometry. C$_{59}$N$^•$$\subset$[10]CPP supramolecular complexes self-assemble into an extended two-dimensional hexagonal lattice yielding a high density network of stable spin-1/2 radicals. We find compelling evidence for electronic coupling between the guest C$_{59}$N$^•$ and the host [10]CPP in supramolecular species. At the same time, [10]CPP effectively protects the radical state of encapsulated azafullerenes against dimerization and inhibits C$_{59}$N$^•$ coupling to the Au substrate. Azafullerene encapsulation by nanohoops represents a viable realization of molecular spin protection while simultaneously demonstrating exceptional self-assembling properties by which large-scale 2D architectures of molecular spins can be realized.

• Jezik: Angleški jezik
• Ključne besede: physical chemistry, electron transfer, electronic properties and materials, electronic structure of atoms and molecules, qubits, spintronics
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FMF - Fakulteta za matematiko in fiziko ; PEF - Pedagoška fakulteta
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2025
• Št. strani: 10 str.
• Številčenje: Vol. 16, art. 193
• PID: 20.500.12556/RUL-166363
• UDK: 544
• ISSN pri članku: 2041-1723
• DOI: 10.1038/s41467-024-55521-2
• COBISS.SI-ID: 221416707
• Datum objave v RUL: 08.01.2025

Gradivo je del revije

• Naslov: Nature communications
• Skrajšan naslov: Nat. commun.
• Založnik: Springer Nature
• ISSN: 2041-1723
• COBISS.SI-ID: 2315876

Licence

• Licenca: CC BY-NC-ND 4.0, Creative Commons Priznanje avtorstva-Nekomercialno-Brez predelav 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by-nc-nd/4.0/deed.sl
• Opis: Najbolj omejujoča licenca Creative Commons. Uporabniki lahko prenesejo in delijo delo v nekomercialne namene in ga ne smejo uporabiti za nobene druge namene.

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: fizikalna kemija