Samala Venkateswarlu

Syntheses and Characterizations of Materials The required starting materials were purchased from commercial sources. Benzo[ b ] benzo[4,5]thieno[2,3- d ]thiophene ( BTBT ) ( 1 ) (30) was prepared using a known literature protocol in the literature. The reactions, such as Friedal-Crafts acylation, reduction, Sonagashira C–C cross-coupling, and copper-catalyzed C–C cross-coupling, were carried out under a nitrogen atmosphere.

1 INTRODUCTION Solution-processed π-conjugated polymers have garnered significant research interest due to their potential applications in various organic electronic devices, including organic light-emitting diodes (OLEDs), organic solar cells (OSCs), and organic field-effect transistors (OFETs).[1-4] Among the plethora of building blocks for constructing semiconducting polymers, diketopyrrolopyrrole (DPP) stands out as a crucial electron-accepting unit utilized in numerous high-performance...