We have synthesized a new compound of a benzothiadiazole central core coupled to terminal thienoimide (TI) via vinyl linker, namely, C8-TI-BT. We investigated physical properties of vacuum-deposited and spin-coated thin films of C8-TI-BT. Optical properties of C8-TI-BT were different between thin films fabricated by vacuum deposition and spin-coating method. The vacuum-deposited films become more ordered structures by heat treatment. The thin-film transistor (TFT) shows ambipolar semiconducting behavior. We further demonstrated characteristics of electroluminescence (EL) device with the spin-coated C8-TI-BT films.