Issue 62, 2019

A stimuli responsive triplet–triplet annihilation upconversion system and its application as a ratiometric sensor for Fe3+ ions

Abstract

A ratiometric fluorescent sensor for the detection of Fe3+ ions is achieved based on triplet–triplet annihilation upconversion (TTA-UC) luminescence. A new anthracene derivative (named as DHTPA) is designed and synthesized and reveals similar optical properties to 9,10-diphenylanthracene (DPA) and is used as a stimuli responsive annihilator in a TTA-UC system due to its complexation ability. As a result, the UC emission can be significantly quenched by Fe3+ ions, while the phosphorescence (PL) emission of sensitizer palladium(II) octaetylporphyrin (PdOEP) remains nearly constant, which makes the PL signal an appropriate internal reference for the UC signal. The UC and ratio signals (IUC/IPL) both reveal a good linear relationship with Fe3+ ion concentration, which for the first time makes the TTA-UC system a perfect ratiometric sensor for Fe3+ ion detection. This sensing method will open a novel avenue to achieve ratiometric sensors in chemical and biological fields.

Graphical abstract: A stimuli responsive triplet–triplet annihilation upconversion system and its application as a ratiometric sensor for Fe3+ ions

Supplementary files

Article information

Article type
Paper
Submitted
20 Aug 2019
Accepted
31 Oct 2019
First published
08 Nov 2019
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2019,9, 36410-36415

A stimuli responsive triplet–triplet annihilation upconversion system and its application as a ratiometric sensor for Fe3+ ions

S. Chen, F. Chen, P. Han, C. Ye, S. Huang, L. Xu, X. Wang and Y. Song, RSC Adv., 2019, 9, 36410 DOI: 10.1039/C9RA06524E

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