Excellent self-assembly properties of Iron Phthalocyanines on alumina for locally ordered single-atom catalysts

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F25%3A10510158" target="_blank" >RIV/00216208:11320/25:10510158 - isvavai.cz</a>

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=aldvgXDW~J" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=aldvgXDW~J</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.physo.2025.100259" target="_blank" >10.1016/j.physo.2025.100259</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Excellent self-assembly properties of Iron Phthalocyanines on alumina for locally ordered single-atom catalysts

Popis výsledku v původním jazyce

In a biomimetic approach, metal Phthalocyanines (Pcs) can be considered to efficiently model single atom catalysts (SACs), hosting catalytically active single metal atoms in their macrocyclic cages. An ordered 2D array of SACs can thus be obtained when metal Pcs are assembled in a regular framework. In this work we consider in particular Iron Pcs (FePcs) on an ultra-thin alumina film grown on the Ni3Al(111) surface. Intrinsic modulations in the potential energy surface related with the oxide film structure drive the self-assembly of FePc molecules into a regular array, with molecular vacancies forming a hexagonal Bravais lattice with the same periodicity of the substrate, i.e. with a lattice parameter of about 4 nm. The symmetry of the supramolecular structure is dictated by the template rather than by the C4v symmetry of the individual molecules, thus indicating prevalence of molecule-substrate interactions with respect to intermolecular forces. The same hexagonal periodicity extends also to the multilayer, which starts forming already before completion of the first, interfacial monolayer. The latter exhibits a local definite chirality, also propagating to the multilayer in a determined stacking sequence.

Název v anglickém jazyce

Excellent self-assembly properties of Iron Phthalocyanines on alumina for locally ordered single-atom catalysts

Popis výsledku anglicky

In a biomimetic approach, metal Phthalocyanines (Pcs) can be considered to efficiently model single atom catalysts (SACs), hosting catalytically active single metal atoms in their macrocyclic cages. An ordered 2D array of SACs can thus be obtained when metal Pcs are assembled in a regular framework. In this work we consider in particular Iron Pcs (FePcs) on an ultra-thin alumina film grown on the Ni3Al(111) surface. Intrinsic modulations in the potential energy surface related with the oxide film structure drive the self-assembly of FePc molecules into a regular array, with molecular vacancies forming a hexagonal Bravais lattice with the same periodicity of the substrate, i.e. with a lattice parameter of about 4 nm. The symmetry of the supramolecular structure is dictated by the template rather than by the C4v symmetry of the individual molecules, thus indicating prevalence of molecule-substrate interactions with respect to intermolecular forces. The same hexagonal periodicity extends also to the multilayer, which starts forming already before completion of the first, interfacial monolayer. The latter exhibits a local definite chirality, also propagating to the multilayer in a determined stacking sequence.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10305 - Fluids and plasma physics (including surface physics)

Projekt

—

Návaznosti

—

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Physics Open

ISSN

2666-0326

e-ISSN

2666-0326

Svazek periodika

23

Číslo periodika v rámci svazku

May

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

8

Strana od-do

100259

Kód UT WoS článku

001435235500001

EID výsledku v databázi Scopus

2-s2.0-85218872942