Effects of chalcogen atom substitution on the optoelectronic and charge-transport properties in picene-type π-systems

A series of pi-conjugated 3,10-dialkyl-dinaphtho[1,2-b:2 ',1 '-d] chalcogenophenes incorporating S, Se, and Te as the central chalcogen atom was newly synthesized, and their optoelectronic and chargetransport properties were systematically investigated. High carrier mobilities of up to 4.7 cm(2) V-1 s(-1) were achieved for solution-processed organic field-effect transistors using these materials as p-channel organic semiconductors.