Journal
RSC ADVANCES
Volume 11, Issue 9, Pages 5276-5283Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d0ra01564d
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Funding
- EU project [679789]
- EPSRC [EP/S003126/1]
- EPSRC [EP/S003126/1] Funding Source: UKRI
- European Research Council (ERC) [679789] Funding Source: European Research Council (ERC)
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A novel methodology towards fully asymmetric DPP derivatives was demonstrated by synthesizing alkylated thienyl pyrrolinone esters with aromatic nitriles followed by N-alkylation. Two fully asymmetric DPP structural isomers were successfully synthesized, showcasing the full customizability of the DPP core. Additionally, two fully asymmetric DPP derivatives incorporating an ethylene glycol chain and a furan moiety were also synthesized, highlighting the potential to significantly broaden the library of available DPP derivatives.
Diaryl-diketopyrrolopyrroles (DPP) are a widely studied class of chromophore that possesses unique properties which have been of great interest for use in conjugated polymers and as small molecules in optoelectronic devices. While previously only partially asymmetric DPP derivatives have been reported, here a novel methodology towards fully asymmetric DPP derivatives is demonstrated via the synthesis and condensation of novel alkylated thienyl pyrrolinone esters with aromatic nitriles followed by N-alkylation. Two fully asymmetric DPP structural isomers T-DPP-P and P-DPP-T were synthesised demonstrating the full customizability of the DPP core. A further two fully asymmetric DPP derivatives incorporating an ethylene glycol chain and a furan moiety were also synthesised, demonstrating the scope of this powerful methodology and it's potential to largely broaden the library of available DPP derivatives.
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