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Multi-step FRET systems based on discrete supramolecular assemblies.

Dengli Chen1, Tangxin Xiao2, Éric Monflier3

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|April 18, 2024
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Discrete supramolecular assemblies (DSAs) enable multi-step fluorescence resonance energy transfer (FRET) for enhanced light-harvesting and optoelectronic applications. This perspective reviews recent advances in DSA fabrication and applications, highlighting future challenges and opportunities.

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Area of Science:

  • Supramolecular Chemistry
  • Photophysics
  • Materials Science

Background:

  • Fluorescence resonance energy transfer (FRET) is a key photophysical mechanism with broad applications.
  • Natural photosynthetic systems demonstrate efficient sequential energy transfer, inspiring artificial systems.
  • Discrete supramolecular assemblies (DSAs) are emerging as platforms for controlled multi-step FRET.

Purpose of the Study:

  • To review recent advancements in the fabrication of DSAs designed for multi-step FRET.
  • To discuss the diverse applications of these DSAs in various scientific and technological fields.
  • To identify future research directions and challenges in the field of multi-step FRET using DSAs.

Main Methods:

  • Categorization of DSAs based on their non-covalent scaffolds.
  • Analysis of recent literature on the construction and performance of DSAs with multi-step FRET.
  • Discussion of fabrication strategies for DSAs incorporating donor and multiple acceptor units.

Main Results:

  • DSAs utilizing scaffolds like amphiphilic nanoparticles, host-guest assemblies, metal-coordination complexes, and biomolecular structures have been successfully developed.
  • These DSAs facilitate efficient multi-step FRET, mimicking natural light-harvesting processes.
  • Demonstrated applications span light-harvesting, therapy, bioimaging, optoelectronics, and information security.

Conclusions:

  • DSAs offer a powerful platform for achieving sophisticated multi-step FRET processes.
  • Continued research into novel non-covalent scaffolds and fabrication techniques will expand their capabilities.
  • Addressing challenges in stability, efficiency, and scalability is crucial for future applications.