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Near infrared-to-blue photon upconversion by exploiting direct S–T absorption of a molecular sensitizer

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Abstract

Triplet–triplet annihilation-based photon upconversion (TTA-UC) from NIR to blue light remains a great challenge. Here, we employ a direct singlet-to-triplet (S–T) excitation to circumvent an energy loss associated with the intersystem crossing (ISC) of triplet sensitizers. The TTA-UC based on the S–T absorption (STUC) allowed an efficient NIR (λ = 724 nm)-to-blue (λ = 462 nm) upconversion with a large anti-Stokes shift of 0.97 eV.

Graphical abstract: Near infrared-to-blue photon upconversion by exploiting direct S–T absorption of a molecular sensitizer

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Publication details

The article was received on 23 Feb 2017, accepted on 01 May 2017 and first published on 02 May 2017


Article type: Communication
DOI: 10.1039/C7TC00827A
Citation: J. Mater. Chem. C, 2017, Advance Article
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    Near infrared-to-blue photon upconversion by exploiting direct S–T absorption of a molecular sensitizer

    Y. Sasaki, S. Amemori, H. Kouno, N. Yanai and N. Kimizuka, J. Mater. Chem. C, 2017, Advance Article , DOI: 10.1039/C7TC00827A

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