Interplay between π-Conjugation and Exchange Magnetism in One- Dimensional Porphyrinoid Polymers

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15640%2F22%3A73627008" target="_blank" >RIV/61989592:15640/22:73627008 - isvavai.cz</a>

Alternative codes found

RIV/68378271:_____/22:00561260 RIV/61388955:_____/22:00561260

Result on the web

<a href="https://pubs.acs.org/doi/10.1021/jacs.2c02700" target="_blank" >https://pubs.acs.org/doi/10.1021/jacs.2c02700</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/jacs.2c02700" target="_blank" >10.1021/jacs.2c02700</a>

Result language

angličtina

Original language name

Interplay between π-Conjugation and Exchange Magnetism in One- Dimensional Porphyrinoid Polymers

Original language description

The synthesis of novel polymeric materials with porphyrinoid compounds as key components of the repeating units attracts widespread interest from several scientific fields in view of their extraordinary variety of functional properties with potential applications in a wide range of highly significant technologies. The vast majority of such polymers present a closed-shell ground state, and, only recently, as the result of improved synthetic strategies, the engineering of open-shell porphyrinoid polymers with spin delocalization along the conjugation length has been achieved . Here, we present a combined strategy toward the fabrication of one-dimensional porphyrinoid-based polymers homocoupled via surface-catalyzed [3 + 3] cycloaromatization of isopropyl substituents on Au(111). Scanning tunneling microscopy and noncontact atomic force microscopy describe the thermal-activated intra-and intermolecula r oxidative ring closure reactions as well as the controlled tip-induced hydrogen dissociation from the porphyrinoid units. In addition, scanning tunneling spectroscopy measurements, complemented by computational investigations, reveal the open-shell character, that is, the antiferromagnetic singlet ground state (S = 0) of the formed polymers, characterized by singlet-triplet inelastic excitations observed between spins of adjacent porphyrinoid units. Our approach sheds light on the crucial relevance of the pi-conjugation in the correlations between spins, while expanding the on-surface synthesis toolbox and opening avenues toward the synthesis of innovative functional nanomaterials with prospects in carbon-based spintronics.

Czech name

—

Czech description

—

Type

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

CEP classification

—

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

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2022

Confidentiality

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

Name of the periodical

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY

ISSN

0002-7863

e-ISSN

1520-5126

Volume of the periodical

144

Issue of the periodical within the volume

28

Country of publishing house

US - UNITED STATES

Number of pages

7

Pages from-to

"12725 "- 12731

UT code for WoS article

000829574800001

EID of the result in the Scopus database

2-s2.0-85134720574