Jump to main content
Jump to site search


Efficient synthesis of discrete oligo(fluorenediacetylene)s toward chain-length-dependent optical and structural properties

Author affiliations

Abstract

Discrete oligomers are perfect candidates for understanding the structure-dependent properties of polymers. Herein, a series of discrete conjugated oligo(fluorenediacetylene)s (D-oFDAs) with a degree of polymerization (DP) up to 10 were obtained by purification with automated flash column chromatography from polydisperse polymers. It is found that the chain length can affect not only photophysical properties but also crystalline properties. As the DP of D-oFDAs increased, the longer conjugation length caused red shifts in their optical spectra and weaker crystallinity. The effective conjugation length has been extrapolated to be as long as 9 fluorenediacetylene units. Moreover, the oligomers can form uniform films by solution casting for the fabrication of light-emitting diodes, showing that the octamer has the most efficient electroluminescence (EL) properties. When the crystal of the dimer was exposed to 254 nm UV light, only part of the sample was polymerized via a 1,4-addition reaction. Significantly, the simple, scalable and effective strategy provides opportunities to further optimize the structure with diverse blocks and side chains for precisely building macromolecular architectures.

Graphical abstract: Efficient synthesis of discrete oligo(fluorenediacetylene)s toward chain-length-dependent optical and structural properties

Back to tab navigation

Supplementary files

Article information


Submitted
05 Feb 2021
Accepted
30 Mar 2021
First published
31 Mar 2021

Polym. Chem., 2021, Advance Article
Article type
Paper

Efficient synthesis of discrete oligo(fluorenediacetylene)s toward chain-length-dependent optical and structural properties

X. Shi, M. Liu, L. Li, J. Zhang, H. Li, Z. Huang, W. Zhang, Z. Zhang, N. Zhou and X. Zhu, Polym. Chem., 2021, Advance Article , DOI: 10.1039/D1PY00165E

Social activity

Search articles by author

Spotlight

Advertisements