The　development　of　high　mobility　emissive　organic　semiconductors　is　of　great　significance　for　the　fabrication　of　miniaturized　optoelectronic　devices,　such　as　organic　light　emitting　transistors.　However,　great　challenge　exists　in　designing　key　materials,　especially　those　who　integrates　triplet　exciton　utilization　ability.　Herein,　dinaphthylanthracene　diimides　(DNADIs),　with　2,6-extended　anthracene　donor,　and　3　＇-　or　4　＇-substituted　naphthalene　monoimide　acceptors　were　designed　and　synthesized.　By　introducing　acceptor-donor-acceptor　structure,　both　materials　show　high　electron　mobility.　Moreover,　by　fine-tuning　of　substitution　sites,　good　integration　with　high　solid　state　photoluminescence　quantum　yield　of　26　%,　high　electron　mobility　of　0.02　cm(2)　V-1　s(-1),　and　the　feature　of　hot-exciton　induced　delayed　fluorescence　were　obtained　in　4　＇-DNADI.　This　work　opens　a　new　avenue　for　developing　high　electron　mobility　emissive　organic　semiconductors　with　efficient　utilization　of　triplet　excitons.