| abstract |
The invention relates to a preparation method of a diketopyrrolopyrrole compound containing a bi[n]alkynyl group at the end, and the compound is composed of 3,6-bis(thiophen-2-yl)pyrrolo[3,4-c]pyrrole ‑1,4‑diketone (DPP) is synthesized by a chemical reaction with a small molecule containing a bi[n] alkyne group, wherein n is an integer greater than or equal to 1, and all preparation methods include two methods: the preparation method (1) consists of Terminal alkyne-DPP derivatives and 1-alkyne alkyne generation Glaser coupling reaction, can obtain the target product of n=1,2; Preparation method (2) by soluble dibrominated DPP derivative and bi[n] alkyne alkyne generation The Cadiot-Chodkiewicz coupling reaction can synthesize the target product with n≥2 in higher yield; the obtained compound can be widely used in organic light-emitting diodes, field effect tubes and solar cells. |