N-oxide-Functionalized Bipyridines as Strong Electron-Deficient Units to Construct High-Performance n-Type Conjugated Polymers.

ABSTRACT: Developing low-cost unipolar n-type organic thin-film transistors (OTFTs) is necessary for logic circuits. To achieve this objective, the usage of new electron-deficient building blocks with simple structure and easy synthetic route is desirable. Among all electron-deficient building units, N-oxide-functionalized bipyridines can be prepared through a simple oxidized transformation of bipyridines. However, employing N-oxide-functionalized bipyridines as the building unit to construct efficient N-type polymers has been overlooked. This gap strongly encourages us to design and synthesize two new N-oxide building blocks, 5,5'-dibromo-[2,2'-bipyridine] 1-oxide (BPyO) and 5,5'-dibromo-[2,2'-bipyridine] 1,1'-dioxide (BPyDO), through the oxidation of sp²-N in 2,2'-bipyridine. The single

SUBMITTER: Li M 

PROVIDER: S-EPMC11884590 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature