Issue 11, 2020
From the journal:

Biomaterials Science

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

Yajie Tian,‡a   Jieling Li,‡b   Luyang Zhao,b   Xianglan Zhang,a   Anhe Wang,b   Honglei Jian,b   Shuo Bai ORCID logo *b  and  Xuehai Yan ORCID logo *b  

* Corresponding authors

a School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), No.1 D-11, Xueyuan Road, Haidian District, 100083 Beijing, China

b State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, No.1 North 2nd Street, Zhongguancun, 100190 Beijing, China
E-mail: baishuo@ipe.ac.cn, yanxh@ipe.ac.cn

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

DOI
https://doi.org/10.1039/D0BM00231C
Article type
Paper
Submitted
12 Feb 2020
Accepted
20 Mar 2020
First published
24 Mar 2020

Biomater. Sci., 2020,8, 3072-3077

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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, 8, 3072 DOI: 10.1039/D0BM00231C

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