Highly Efficient Artificial Light-Harvesting Systems Constructed in an Aqueous Solution Based on Twisted...

Area of Science:

• Supramolecular Chemistry
• Materials Science
• Photochemistry

Background:

• Supramolecular self-assembly offers a versatile platform for designing functional materials.
• Artificial light-harvesting systems aim to mimic natural photosynthesis for energy conversion.

Purpose of the Study:

• To design and synthesize highly efficient, water-soluble artificial light-harvesting systems.
• To investigate energy transfer processes within supramolecular assemblies.

Main Methods:

• Supramolecular self-assembly of twisted cucurbit[14]urils (tQ[14]) with anthracene derivatives (ADPy).
• Formation of ADPy@tQ[14] supramolecular polymers with aggregation-induced fluorescence.
• Loading of Nile red (NiR) and rhodamine B (RB) as energy acceptors onto ADPy@tQ[14].

Main Results:

• ADPy@tQ[14] supramolecular polymers exhibited spherical morphology and aggregation-induced fluorescence.
• Efficient energy transfer was observed from ADPy@tQ[14] to NiR and RB.
• Energy transfer efficiency to NiR reached 72.45% with an antenna effect of 55.4 at a 100:1 donor/acceptor ratio.

Conclusions:

• The designed supramolecular systems function as effective artificial light-harvesting platforms.
• These systems demonstrate significant potential for simulating natural photosynthesis in aqueous media.
• The study highlights the utility of supramolecular self-assembly for creating advanced functional materials.