With DMSO as the solvent and the precursor of –SO2Me unit at room temperature, a novel electrochemical oxidization and amination of DMSO with amines was developed for the synthesis of...
To investigate the effect of different carbon hybridization in 9H-fluorene on the resultant polymers, a series of donor–acceptor conjugated polymers have been synthesized by copolymerizing substituted 9H-fluorenes with triazoloquinoxaline. All polymers exhibit good solution-processability and broad absorption in 350–1000 nm region with narrow optical bandgaps ranging from 1.27 eV to 1.55 eV. The results indicate that fluorene functionalization via different carbon hybridization on 9-position could be an effective strategy to fine-tune the absorption, energy levels, and photovoltaic performance of the polymers. 9-Position sp2-hybridized carbon in fluorene could enhance absorption of ultraviolet-visible and form good morphology of blending layers, through its planar rigid structure. All polymer solar cells devices exhibited moderate performance with the best power conversion efficiency of 3.02% achieved based on P2. Compared to ladder-type multifused fluorene, carbon-hybridized 9H-fluorene units can be a very useful building block for constructing narrow bandgap polymers with facile synthesis, and even interesting optoelectronic properties.
Ausgehend von dem nach Literaturmethoden dargestellten Ferrocenderivat (I) werden durch Polykondensation unter verschiedenen Bedingungen mit Disäurechloriden (II) oder Diisocyanaten (IV) ferrocenhaltige Polyamide (III) und Polyharnstoffe (V) erhalten.
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