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DOI: 10.1055/s-0041-1727181
π-Extended Ladder-Type Conjugated Polymers via BN-Annulation
Abstract
Two kinds of ladder-type conjugated polymers were concisely synthesized by the formation of single-stranded conjugated polymers via Stille cross-couplings, followed by nitrogen-directed electrophilic borylations at electron-rich aromatic rings. The resulting BN-annulated polymers show good film-forming behaviors and high air and thermal stability. Their structurally shape-persistent rigid backbones render them with π-extended conjugation, allowing for efficient light harvesting in the low-energy regions, and emitting strong fluorescence with narrow emission widths.
Key words
ladder-type polymers - BN-annulation - π-extended conjugation - light harvesting - fluorescence emissionSupporting Information
Supporting information for this article is available online at https://doi.org/10.1055/s-0041-1727181.
# Equally contributed.
Dedicated to Professor Peter Bäuerle on the occasion of his 65th birthday.
Publication History
Received: 17 January 2021
Accepted: 01 March 2021
Article published online:
26 April 2021
© 2021. The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commercial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/)
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