What question did this study set out to answer?

This research aims to develop new conjugated polymers that absorb strongly in the near-infrared region for various applications.

April 22, 2026Open Access

Facile synthesis of ultralow-band-gap alkoxythiophene-flanked diketopyrrolopyrrole homopolymers via FeCl 3 -mediated oxidative polymerization

SVSamala VenkateswarluUniversity of Waterloo RSRavinder SinghUniversity of Waterloo SCSongbo CuiZhejiang International Studies University

Key Points

This research aims to develop new conjugated polymers that absorb strongly in the near-infrared region for various applications.
Conducted oxidative polymerization using FeCl3 as a catalyst.
Synthesized alkoxythiophene-flanked diketopyrrolopyrrole homopolymers under controlled conditions.
Analyzed the optical properties of the resulting polymers.
The synthesized polymers exhibited strong absorption in the NIR-II region.
Enhanced properties indicate potential for use in optoelectronic devices.
Results show the polymers are viable for biomedical applications.

Abstract

Conjugated polymers with strong absorption in the near-infrared-II (NIR-II, 1000-1700 nm) region are highly attractive for optoelectronic and biomedical applications. However, their availability remains limited, and their synthesis often relies...

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