polyfluorenes

https://doi.org/10.1351/goldbook.08892
Polymers composed of macromolecules containing fluorenediyl or substituted fluorenediyl (mainly 2,7-diyl) constitutional repeating units in the backbone (structure-based polymer class name).
Note:
Polyfluorenes are used as photoconducting, photoluminescent and electroluminescent materials for organic light-emitting diodes, organic thin film transistors and polymer solar cells.
Source:
PAC, 2022, 94, 15. (Glossary of terms relating to electronic, photonic and magnetic properties of polymers (IUPAC Recommendations 2021)) on page 57 [Terms] [Paper]