Precision and Purity of Conjugated Polymers – To be Ensured Before Processing

Synthesis of Narrowly Distributed α,ω-Bifunctionalized Conjugated Polymers

“…Conjugated polymers as a kind of intriguing materials have shown wide application scopes in fluorescent imaging and sensing, − organic light emission diodes (OLEDs), − organic photovoltaics (OPVs), − and organic field effect transistors (OFETs). − The π-conjugated backbones of conjugated polymers are mainly constructed with cross-coupling polymerizations through the step growth polymerization (SGP) pathway . With the ever-increasing demand in improving the overall properties of conjugated polymers and pushing forward for industrial applications, the precise control of the backbone, terminal structure, functionality, molecular weight, and molecular weight distribution (MWD, commonly measured as dispersity, Đ ) of conjugated polymers is of essential importance. Due to the uncontrolled nature of SGP, the majority of conjugated polymers are synthesized with broad dispersity and/or difficult-to-control chain-end structures. − Resolving these issues would surely open a new era in the applications of functional conjugated polymer materials.…”

“…15−19 The π-conjugated backbones of conjugated polymers are mainly constructed with cross-coupling polymerizations through the step growth polymerization (SGP) pathway. 20 With the ever-increasing demand in improving the overall properties of conjugated polymers and pushing forward for industrial applications, 21 the precise control of the backbone, terminal structure, functionality, molecular weight, and molecular weight distribution (MWD, commonly measured as dispersity, Đ) of conjugated polymers is of essential importance. Due to the uncontrolled nature of SGP, the majority of conjugated polymers are synthesized with broad dispersity and/or difficult-to-control chain-end structures.…”