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Updated: May 15, 2025

Time-resolved Photophysical Characterization of Triplet-harvesting Organic Compounds at an Oxygen-free Environment Using an iCCD Camera
Published on: December 27, 2018
Highly Sensitive Thianthrene Covalent Trimer Room-Temperature Phosphorescent Materials for Low-Concentration Oxygen
Zhiqiang Yang1, Junjie Qian1, Shuaiqiang Zhao1
1State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, Jilin, 130012, P.R. China.
None:
Oxygen is ubiquitous and vital to life, industry, and environmental safety, so accurate and reliable oxygen sensing and detection are of great significance, especially for oxygen in the low concentration range. Herein, two pure organic metal-free room-temperature phosphorescence (RTP) materials were developed using a covalent trimerization strategy of thianthrene (TA), which exhibit high oxygen sensitivity and fluorescence-RTP separated dual emission due to the moderate spin-orbit coupling (SOC). Compared with traditional metal-organic complexes, the oxygen sensitivity of RTP is improved by about two orders of magnitude, especially facilitating accurate quantitative detection of low-concentration oxygen. Leveraging oxygen quenching-induced changes in emission color and intensity, coupled with computer-assisted image processing, a simple oxygen monitoring device was established to realize real-time and accurate detection of low-concentration oxygen, promoting the industrial practical application in many related fields.
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