Functionalization of biphenylcarbazole (CBP) with siloxane-hybrid chains for solvent-free liquid materials
Abstract
We report herein the synthesis of siloxane-functionalized CBP molecules (4,4′-bis(carbazole)-1,1′-biphenyl) for liquid optoelectronic applications. The room-temperature liquid state is obtained through a convenient functionalization of the molecules with heptamethyltrisiloxane chains via hydrosilylation of alkenyl spacers. The synthesis comprises screening of metal-catalyzed methodologies to introduce alkenyl linkers into carbazoles (Stille and Suzuki Miyaura cross-couplings), incorporate the alkenylcarbazoles to dihalobiphenyls (Ullmann coupling), and finally introduce the siloxane chains. The used conditions allowed the synthesis of the target compounds, despite the high reactivity of the alkenyl moieties bound to π-conjugated systems toward undesired side reactions such as polymerization, isomerization, and hydrogenation. The features of these solvent-free liquid CBP derivatives make them potentially interesting for fluidic optoelectronic applications.
Citation
Shaya , J , Correia , G , Heinrich , B , Ribierre , J-C , Polychronopoulou , K , Mager , L & Méry , S 2021 , ' Functionalization of biphenylcarbazole (CBP) with siloxane-hybrid chains for solvent-free liquid materials ' , Molecules , vol. 27 , no. 1 , 89 . https://doi.org/10.3390/molecules27010089
Publication
Molecules
Status
Peer reviewed
ISSN
1420-3049Type
Journal article
Description
Funding: This research was funded by the French National Research Agency (ANR) through the Programme d’Investissement d’Avenir under contract ANR-11-LABX-0058-NIE within the Investissement d’Avenir program ANR-10-IDEX-0002-02 and was supported by Khalifa University through the grant RC2-2018-024.Collections
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