Stable 7,14-disubstituted-5,12-dithiapentacenes with quinoidal conjugation
KAUST DepartmentKAUST Catalysis Center (KCC)
Physical Sciences and Engineering (PSE) Division
Chemical Science Program
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AbstractTwo 7,14-disubstituted-5,12-dithiapentacenes (1 and 2) with quinoidal conjugation were synthesized. Their ground-state quinoidal structures were proven by X-ray crystallographic analysis. They showed very different electronic and optical properties from those of the corresponding pentacene derivatives with diene conjugation, and their stability was significantly improved. Organic field effect transistors based on solution processed thin films of 1 and 2 exhibited a hole mobility of up to 0.032 cm-2 V-1 s -1. © 2014 American Chemical Society.
SponsorsC.C. acknowledges financial support from the NUS Start-Up grant (R-143-000-486-133) and MOE AcRF Tier 1 grants (R-143-000-510-112 and R-143-000-573-112). K.H. acknowledges financial support from KAUST.
PublisherAmerican Chemical Society (ACS)