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Highly Efficient Artificial Light-Harvesting Systems Constructed in Aqueous Solution Based on Supramolecular
Shuwen Guo1, Yongshang Song1, Yuling He2
1Key Laboratory of Mesoscopic Chemistry of MOE and Collaborative Innovation Center of Chemistry for Life Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China.
Angewandte Chemie (International Ed. in English)
|February 1, 2018
Summary
Researchers developed efficient artificial light-harvesting systems using supramolecular self-assembly. These systems utilize a water-soluble pillar[6]arene (WP6) and fluorescence dyes for enhanced energy transfer and an ultrahigh antenna effect.
Area of Science:
- Supramolecular Chemistry
- Materials Science
- Photochemistry
Background:
- Artificial light-harvesting systems mimic natural photosynthesis to capture and transfer light energy.
- Developing efficient and stable light-harvesting systems in aqueous media is crucial for various applications.
- Supramolecular self-assembly offers a versatile platform for constructing functional nanomaterials.
Purpose of the Study:
- To fabricate highly efficient light-harvesting systems in aqueous solution.
- To investigate the supramolecular self-assembly of water-soluble pillar[6]arene (WP6) with a salicylaldehyde azine derivative (G) and fluorescence dyes.
- To evaluate the energy transfer efficiency and antenna effect in the fabricated systems.
Main Methods:
- Fabrication of supramolecular assemblies in aqueous solution using WP6, G, and fluorescence dyes (Nile Red or Eosin Y).
- Characterization of aggregation-induced emission enhancement of the WP6-G assembly.
- Investigation of energy transfer processes from the WP6-G assembly (donor) to the dyes (acceptors).
- Evaluation of the antenna effect at high donor/acceptor ratios.
Main Results:
- Successful fabrication of aqueous light-harvesting systems based on WP6-G supramolecular assembly.
- WP6-G assembly demonstrated enhanced aggregation-induced emission and acted as an efficient energy donor.
- Efficient energy transfer was observed from WP6-G to both Nile Red and Eosin Y.
- Both WP6-G-NiR and WP6-G-ESY systems exhibited an ultrahigh antenna effect at high donor/acceptor ratios.
Conclusions:
- The WP6-G supramolecular assembly is a promising platform for constructing efficient artificial light-harvesting systems in water.
- The self-assembly approach enables effective energy transfer and an enhanced antenna effect, crucial for light-harvesting applications.
- These systems hold potential for applications requiring efficient light capture and energy conversion in aqueous environments.
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