Related Experiment Video
Updated: Dec 24, 2025

Integrating a Triplet-triplet Annihilation Up-conversion System to Enhance Dye-sensitized Solar Cell Response to Sub-bandgap Light
Published on: September 12, 2014
Peptide assembly assisted triplet-triplet annihilation photon upconversion in non-deoxygenated water
Yajie Tian1, Jieling Li, Luyang Zhao
1School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), No.1 D-11, Xueyuan Road, Haidian District, 100083 Beijing, China.
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.
Related Concept Videos
Deactivation Processes: Jablonski Diagram
Nuclear Overhauser Enhancement (NOE)
Double Resonance Techniques: Overview
Spin decoupling is usually achieved by...
Photoluminescence: Fluorescence and Phosphorescence
A pair of electrons in a...
Oxygenic Photosynthesis
Peptide Identification Using Tandem Mass Spectrometry
This technique helps gather information regarding the protein from which the peptide was obtained and to study the peptides’ amino acid sequence. Identifying peptides from a complex mixture is an important component of the growing field of...

