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Issue 1, 2017
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Efficient triplet–triplet annihilation upconversion in binary crystalline solids fabricated via solution casting and operated in air

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Abstract

Binary crystalline solids consisting of a sensitizer (Pt-octaethylporphyrin) and an emitter (9,10-diphenylanthracene (DPA) or its alkyl-strapped derivative (C7-sDPA)) were fabricated by solution casting under rapid drying conditions and found to show efficient triplet–triplet annihilation upconversion by the suppression of component segregation. Microspectroscopic studies of individual crystalline particles of the binary solids revealed threshold intensities as low as 5 mW cm−2, close to solar levels, and UC quantum yields of 20% were possible when using C7-sDPA as an emitter, even in air.

Graphical abstract: Efficient triplet–triplet annihilation upconversion in binary crystalline solids fabricated via solution casting and operated in air

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Publication details

The article was received on 11 Oct 2016, accepted on 19 Oct 2016 and first published on 19 Oct 2016


Article type: Communication
DOI: 10.1039/C6MH00413J
Citation: Mater. Horiz., 2017,4, 83-87
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    Efficient triplet–triplet annihilation upconversion in binary crystalline solids fabricated via solution casting and operated in air

    K. Kamada, Y. Sakagami, T. Mizokuro, Y. Fujiwara, K. Kobayashi, K. Narushima, S. Hirata and M. Vacha, Mater. Horiz., 2017, 4, 83
    DOI: 10.1039/C6MH00413J

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