Prof. Bernd Tieke "Polymers based on diketopyrrolopyrrole and related chromophors for electronic applications"

A useful strategy in the design of new polymers for electronic applications is to incorporate highly UV absorbing and emitting chromophores into π-conjugated polymers chains. Potentially useful chromophores can be found among organic colorants, especially in the field of ‘high performance pigments’ developed in the last three decades such as 2,5-diketopyrrolo[3,4-c]pyrrole (DPP) and its derivatives. After it was demonstrated that DPP-containing polymers exhibit light-emitting properties, an increasing number of publications was concerned with synthesis, characterization and electronic applications of π-conjugated polymers containing DPP-based chromophores in the main chain. Very recently, new oligomers and polymers based on DPP-related chromophores such as isomeric 2,5-diketopyrrolo[3,2-b]pyrrole (isoDPP), 2,5-dithioketopyrrolo[3,4-c]-pyrrole (DTPP), benzo-[1,2-b:4,5-b´]difuranone (para-BDF), benzo[1,2-b:6,5-b´]difuranone (ortho-BDF), naphtho-[2,1-b:3,4-b´]difuranone (NDF), and benzo[1,2-b:4,5-b´]dipyrrolidone (BDP) were synthesized. In the contribution, preparation, optical and electrochemical properties of the polymers are described. Structure-property relationships and potential applications in electronic devices are discussed.