Alkylated selenophene-based ladder-type monomers via a facile route for high performance thin-film transistor applications
McNeill, Christopher R.
Anthopoulos, Thomas D.
KAUST DepartmentKAUST Solar Center (KSC)
Materials Science and Engineering Program
Physical Sciences and Engineering (PSE) Division
Permanent link to this recordhttp://hdl.handle.net/10754/623756
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AbstractWe report the synthesis of two new selenophene containing ladder-type monomers, cyclopentadiselenophene (CDS) and indacenodiselenophene (IDSe), via a twofold and fourfold Pd catalyzed coupling with a 1,1-diborylmethane derivative. Co-polymers with benzothiadiazole (BT) were prepared in high yield by Suzuki polymerization to afford co-polymers which exhibited excellent solubility in a range of non-chlorinated solvents. The CDS co-polymer exhibited a band gap of just 1.18 eV, which is amongst the lowest reported for donor-acceptor polymers. Thin-film transistors were fabricated using environmentally benign, non-chlorinated solvents with the CDS and IDSe co-polymers exhibiting hole mobility up to 0.15 and 6.4 cm2 /Vs, respectively. This high performance was achieved without the undesirable peak in mobility often observed at low gate voltages due to parasitic contact resistance.
CitationFei Z, Han Y, Gann E, Hodsden T, Chesman A, et al. (2017) Alkylated selenophene-based ladder-type monomers via a facile route for high performance thin-film transistor applications. Journal of the American Chemical Society. Available: http://dx.doi.org/10.1021/jacs.7b03099.
SponsorsWe thank the British Council (Grant Number 173601536) and EPSRC (EP/L016702/1) for support. C.R.M. acknowledges support from the Australian Research Council (DP130102616). This research was undertaken in part on the SAXS/WAXS beamline at the Australian Synchrotron, Victoria, Australia.
PublisherAmerican Chemical Society (ACS)