We have designed and synthesized a new donor/acceptor‐type tetracene derivative by the introduction of dicarboxylicimide and disulfide groups as electron‐withdrawing and ‐donating units, respectively. The prepared compounds, tetracenedicarboxylicimide (TI) and itsdisulfide (TIDS) have high chemical and electrochemical stability as well as long‐wavelength absorptions of up to 886 nm in the thin