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Photon upconversion from one-photon absorption to triplet-triplet annihilation based on halofluoresceins and dual-channel upconversion ion detection

Journal of Luminescence, ISSN: 0022-2313, Vol: 260, Page: 119890
2023
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Article Description

Halofluorescein derivatives were found to exhibit one-photon absorption upconversion (oPUC) at ∼585 nm under the excitation of 655 nm diode laser (∼1.0 W⋅cm −2 ); on the other hand, they can induce emitter 9,10-diphenylanthracene ( DPA ) to emit triplet-triplet annihilation upconversion (TTA-UC) at ∼430 nm under the excitation of 532 nm diode laser (∼0.5 W⋅cm −2 ). Inspired by such unique feature, a turn-on upconversion (UC) chemsensor (i.e, halofluorescein thiospirolactone) was synthesized to develop dual-channel ion detection. The results have shown that the limit of detection (LOD) to Hg 2+ can be as low as nanomolar concentration (1.4 nM) based on the TTA-UC probing, while the upper detection limit to Hg 2+ can reach as high as millimolar concentration range (0.5 mM) based on the oPUC probing. The importance in this work may provide a new strategy that the high concentration probing with the low detection limit can be realized by one probe, based on simultaneously using the oPUC and TTA-UC detection methods.

Bibliographic Details

Jize Ma; Changqing Ye; Zuoqin Liang; Shuoran Chen; Lin Li; Yizhong Shi; Shigang Wan; Kai Zhao; Xiaomei Wang

Elsevier BV

Biochemistry, Genetics and Molecular Biology; Physics and Astronomy; Chemistry

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