Poly(3-hexylthiophene)s Functionalized with N-Heterocyclic Carbenes as Robust and Conductive Ligands for the Stabilization of Gold Nanoparticles.
N-heteroyclic carbenes
chain growth polymerization
conjugated polymers
gold nanoparticles
hybrid materials
Journal
Angewandte Chemie (International ed. in English)
ISSN: 1521-3773
Titre abrégé: Angew Chem Int Ed Engl
Pays: Germany
ID NLM: 0370543
Informations de publication
Date de publication:
19 Feb 2021
19 Feb 2021
Historique:
received:
07
09
2020
revised:
22
10
2020
pubmed:
3
11
2020
medline:
3
11
2020
entrez:
2
11
2020
Statut:
ppublish
Résumé
Recently, N-heterocyclic carbenes (NHCs) are explored as anchor groups to bind organic ligands to colloidal gold (i.e. gold nanoparticles, Au NPs), yet these efforts are confined to non-conjugated ligands so far-that is, focused solely on exploiting the stability aspect. Using NHCs to link Au NPs and electronically active organic components, for example, conjugated polymers (CPs), will allow capitalizing on both the stability as well as the inherent conductivity of the NHC anchors. Here, we report three types of Br-NHC-Au-X (X=Cl, Br) complexes, which, when used as starting points for Kumada polymerizations, yield regioregular poly(3-hexylthiophenes)-NHC-Au (P3HTs-NHC-Au) with narrow molecular weight distributions. The corresponding NPs are obtained via direct reduction and show excellent thermal as well as redox stability. The NHC anchors enable electron delocalization over the gold/CP interface, resulting in an improved electrochromic response behavior in comparison with P3HT-NHC-Au.
Identifiants
pubmed: 33135279
doi: 10.1002/anie.202012216
pmc: PMC7898828
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
3912-3917Subventions
Organisme : Fonds der Chemischen Industrie (FCI)
ID : Liebig Fellowship
Organisme : Deutsche Forschungsgemeinschaft
ID : 407193529
Informations de copyright
© 2020 The Authors. Angewandte Chemie International Edition published by Wiley-VCH GmbH.
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