Synthesis of an Isomerized Bithiazole Imide (iBTzI) Acceptor and π-Extension via Intramolecular Noncovalent Interactions

An isomerized bithiazole imide (iBTzI) acceptor was effectively synthesized and functionalized via Suzuki or Stille coupling reactions. Compared with the isomerized bithiophene imide (iBTI) and bithiazole imide (BTzI), iBTzI has a more planar skeleton. Furthermore, the conjugated skeleton of iBTzI can be extended by hydrogen and chalcogen bonds. The donor-acceptor-donor-type (D-A-D-type) iBTzI derivatives display blue-to-red emission and enhanced photoluminescence quantum yields (Φ