Issue 39, 2019

Defining side chain successions in anthracene-based poly(arylene ethynylene)-alt-poly(phenylene vinylene)s: probing structure–property relationships

Abstract

By optimizing and adapting the synthesis of double dissymmetric functionalized phenylene building blocks, a library of nine anthracene-containing poly(arylene ethynylene)-alt-poly(phenylene vinylene)s (AnE-PVs) with diverse successions of octyloxy and 2-ethylhexyloxy side chains was realized. Despite the structural resemblance of the regioisomeric comonomers and the polymers, their 1H NMR spectra were found to feature perceptible side chain configuration-specific patterns. The differentiation of the photophysical characteristics of the polymers induced by the various defined, semi-defined and random side chain sequences has been thoroughly investigated by UV-vis absorption and photoluminescence spectroscopy in solution and in thin film. The gained insights allowed the specification of the notions on the complex structure–property relationships in AnE-PV systems. In particular, the side chain assignment in direct proximity to the anthracene moieties distinctly affects the optical properties. This systematic study presents an illustrative example for the versatile but also intricate capabilities of side chain engineering.

Graphical abstract: Defining side chain successions in anthracene-based poly(arylene ethynylene)-alt-poly(phenylene vinylene)s: probing structure–property relationships

Supplementary files

Article information

Article type
Paper
Submitted
11 Jul 2019
Accepted
08 Sep 2019
First published
18 Sep 2019
This article is Open Access
Creative Commons BY license

Polym. Chem., 2019,10, 5339-5347

Defining side chain successions in anthracene-based poly(arylene ethynylene)-alt-poly(phenylene vinylene)s: probing structure–property relationships

C. Ulbricht, N. Bouguerra, S. Inack Ngi, O. Brüggemann and D. A. M. Egbe, Polym. Chem., 2019, 10, 5339 DOI: 10.1039/C9PY01030K

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