On-Surface Synthesis of Non-Benzenoid Nanographenes Embedding Azulene and Stone-Wales Topologies

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15640%2F24%3A73624709" target="_blank" >RIV/61989592:15640/24:73624709 - isvavai.cz</a>

Alternative codes found

RIV/68378271:_____/24:00585348 RIV/00216208:11320/24:10494610

Result on the web

<a href="https://onlinelibrary.wiley.com/doi/10.1002/anie.202318185" target="_blank" >https://onlinelibrary.wiley.com/doi/10.1002/anie.202318185</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/anie.202318185" target="_blank" >10.1002/anie.202318185</a>

Result language

angličtina

Original language name

On-Surface Synthesis of Non-Benzenoid Nanographenes Embedding Azulene and Stone-Wales Topologies

Original language description

The incorporation of non-benzenoid motifs in graphene nanostructures significantly impacts their properties, making them attractive for applications in carbon-based electronics. However, understanding how specific non-benzenoid structures influence their properties remains limited, and further investigations are needed to fully comprehend their implications. Here, we report an on-surface synthetic strategy toward fabricating non-benzenoid nanographenes containing different combinations of pentagonal and heptagonal rings. Their structure and electronic properties were investigated via scanning tunneling microscopy and spectroscopy, complemented by computational investigations. After thermal activation of the precursor P on the Au(111) surface, we detected two major nanographene products. Nanographene A(a-a) embeds two azulene units formed through oxidative ring-closure of methyl substituents, while A(a-s) contains one azulene unit and one Stone-Wales defect, formed by the combination of oxidative ring-closure and skeletal ring-rearrangement reactions. A(a-a) exhibits an antiferromagnetic ground state with the highest magnetic exchange coupling reported up to date for a non-benzenoid containing nanographene, coexisting with side-products with closed shell configurations resulted from the combination of ring-closure and ring-rearragement reactions (Ba-a, Ba-s, Bs-a and Bs-s). Our results provide insights into the single gold atom assisted synthesis of novel NGs containing non-benzenoid motifs and their tailored electronic/magnetic properties.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10301 - Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2024

Confidentiality

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

Name of the periodical

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

ISSN

1433-7851

e-ISSN

1521-3773

Volume of the periodical

63

Issue of the periodical within the volume

13

Country of publishing house

DE - GERMANY

Number of pages

9

Pages from-to

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UT code for WoS article

001169597100001

EID of the result in the Scopus database

2-s2.0-85185442427