Synthesis, structural characterization, and optical properties of benzo[f]naphtho[2,3-b]phosphoindoles.

ABSTRACT: Phosphole-fused π-conjugated acenes have been attracting interest because of the attractive features of the phosphole moiety, such as fluorescence and chemically modifiable properties. Herein, 6-phenyl-6H-benzo[f]naphtho[2,3-b]phosphoindole was prepared by reacting dichlorophenylphosphine with a dilithium intermediate derived from 3,3'-dibromo-2,2'-binaphthyl. Various derivatives, such as a phospholium salt and a borane-phosphole complex with functional groups on the phosphorus atom were synthesized using the obtained phosphole as a common starting material. Single-crystal X-ray analysis of the parent benzo[f]naphtho[2,3-b]phosphoindole revealed that the pentacyclic ring is almost planar. Fluorescence spectroscopy data showed that the phosphole derivative

SUBMITTER: Matsumura M 

PROVIDER: S-EPMC7940816 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature