Designing highly delocalized solitons by harnessing the structural parity of π-conjugated polymers

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F25%3A00599756" target="_blank" >RIV/68378271:_____/25:00599756 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1038/s44160-024-00665-8" target="_blank" >https://doi.org/10.1038/s44160-024-00665-8</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1038/s44160-024-00665-8" target="_blank" >10.1038/s44160-024-00665-8</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Designing highly delocalized solitons by harnessing the structural parity of π-conjugated polymers

Popis výsledku v původním jazyce

π-Conjugated polymers are a class of materials featuring an alternation of single and double bonds along their backbone, a configuration that can result in delocalized π-electrons. The unique electronic structure of these polymers makes them vital in applications such as organic electronics, solar cells and light-emitting diodes. A key feature in such materials is the emergence of topological quasiparticles, termed solitons, which are crucial for their observed high electrical conductivity. By using on-surface synthesis, we present a chemical reaction based on the regio- and stereoselective coupling of indenyl moieties for fabricating π-conjugated acenoindenylidene polymers, which feature a longitudinal polyacetylene backbone, on a Au(111) surface. The relationship between structural parity and electronic properties is investigated. We discover that odd-membered polymers exhibit an in-gap soliton state, which, due to their low bandgaps, spatially extends several nanometres along the longitudinal polyacetylene backbone. Our findings pave the way for the design of π-conjugated polymers that are able to host intrinsic solitons through chemical design by exploiting structural parity, without the need for external doping.

Název v anglickém jazyce

Designing highly delocalized solitons by harnessing the structural parity of π-conjugated polymers

Popis výsledku anglicky

π-Conjugated polymers are a class of materials featuring an alternation of single and double bonds along their backbone, a configuration that can result in delocalized π-electrons. The unique electronic structure of these polymers makes them vital in applications such as organic electronics, solar cells and light-emitting diodes. A key feature in such materials is the emergence of topological quasiparticles, termed solitons, which are crucial for their observed high electrical conductivity. By using on-surface synthesis, we present a chemical reaction based on the regio- and stereoselective coupling of indenyl moieties for fabricating π-conjugated acenoindenylidene polymers, which feature a longitudinal polyacetylene backbone, on a Au(111) surface. The relationship between structural parity and electronic properties is investigated. We discover that odd-membered polymers exhibit an in-gap soliton state, which, due to their low bandgaps, spatially extends several nanometres along the longitudinal polyacetylene backbone. Our findings pave the way for the design of π-conjugated polymers that are able to host intrinsic solitons through chemical design by exploiting structural parity, without the need for external doping.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Nature Synthesis

ISSN

2731-0582

e-ISSN

2731-0582

Svazek periodika

4

Číslo periodika v rámci svazku

Feb

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

10

Strana od-do

233-242

Kód UT WoS článku

001335106400001

EID výsledku v databázi Scopus

2-s2.0-85206924212