Highly sensitive and selective Fe³⁺ fluorescence probes based on thermally activated delayed fluorescence materials.

Authors

Changjiang Zhou, Zaimai Tu, Kongqing Zhang, Jiyuan Liu, Yangtian Ma, Zhichao Qiu, Suraj Kumar Pathak, Hongwei Ma, Ke Sun

Published in

Dalton transactions (Cambridge, England : 2003). Oct 20, 2026. Epub Oct 20, 2026.

Abstract

Iron ions play a significant role in the biological metabolism of the human body. Both the deficiency and excess of iron ions can lead to various diseases. Herein, two novel fluorescent probes, DMAC-BP-MD and DMAC-BPTAZ, were designed and synthesized for the detection of Fe³⁺ ions based on thermally activated delayed fluorescence (TADF) emitters. Attributed to the formation of complexes and a competitive absorption mechanism, the two sensors demonstrate excellent selectivity and high sensitivity towards Fe³⁺ in a water/tetrahydrofuran (9 : 1, v/v) mixture. Among the two probes, DMAC-BP-MD achieves superior detection sensitivity with a lower limit of detection (LOD) of 2.45 × 10^-6 mol L^-1. This research contribution presents a novel molecular design strategy for high-performance fluorescent probes.

PMID:
42900501
Bibliographic data and abstract were imported from PubMed on 21 Oct 2026.

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