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Peptide assembly assisted triplet–triplet annihilation photon upconversion in non-deoxygenated water

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Abstract

Triplet–triplet annihilation upconversion (TTA-UC) has great potential in many fields. However, a stable TTA-UC system with adjustable UC efficiency in non-deoxygenated water is still in urgent demand. Here, the first example of short peptide-tuned UC luminescence in water is reported. With only a small amount of peptides, UC chromophores can assemble into tetrahedral microrods with adjustable size and UC efficiency. Successful TTA-UC luminescence of these microrods in water is achieved due to the regular and dense organization of molecular upconversion chromophores tuned by peptides, which allows rapid triplet exciton migration, avoids aggregation-induced quenching and screens molecular oxygen to upconversion chromophores.

Graphical abstract: Peptide assembly assisted triplet–triplet annihilation photon upconversion in non-deoxygenated water

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Article information


Submitted
12 Feb 2020
Accepted
20 Mar 2020
First published
24 Mar 2020

Biomater. Sci., 2020, Advance Article
Article type
Paper

Peptide assembly assisted triplet–triplet annihilation photon upconversion in non-deoxygenated water

Y. Tian, J. Li, L. Zhao, X. Zhang, A. Wang, H. Jian, S. Bai and X. Yan, Biomater. Sci., 2020, Advance Article , DOI: 10.1039/D0BM00231C

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