Abstract
A series of random low band-gap conjugated copolymers (PFO-DDSTQ) derived from 9,9-dioctylfluorene (DOF) and 6,7-dimethyl-4,9-di(selenophen-2-yl)-[1,2,5]thiadiazolo[3,4-g]quinoxaline (DDSTQ) are prepared by the palladium-catalyzed Suzuki coupling reaction. The obtained polymers are readily soluble in common organic solvents. The polymers absorb light from 300 to 880nm with two absorbance peaks at around 370 and 740nm. The optical band gaps of the resulting polymers with 15 or 30% narrow band-gap units in the polymer backbone calculated from the absorption onset are around 1.41eV. The electroluminescent properties of the polymers were investigated and it was found that with 5% DDSTQ copolymerized on the main chain, the resulting polymer PFO-DDSTQ5 exhibited an exclusively near-infrared emission at 860nm.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
