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Electron transfer-based single molecule fluorescence as a probe for nano-environment dynamics.

Ruiyun Chen1, Ruixiang Wu2, Guofeng Zhang3

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Electron transfer (ET) single molecule probes reveal nano-environment dynamics. Changes in fluorescence from ET sensitively track glass dynamics, binding events, and polymer behavior.

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Area of Science:

  • Fundamental processes in biology, chemistry, and physics.
  • Single-molecule spectroscopy and nanoscience.

Background:

  • Electron transfer (ET) is a fundamental elementary process.
  • Single molecule probes offer high sensitivity for studying complex systems.

Purpose of the Study:

  • To review recent research on single molecule probes utilizing electron transfer.
  • To highlight the application of ET-based probes in diverse scientific fields.

Main Methods:

  • Utilizing electron transfer (ET) to induce changes in fluorescence trajectory and lifetime of single molecules.
  • Analyzing fluorescence data from single molecules to probe nano-environments.

Main Results:

  • Demonstrated ET-induced fluorescence changes as a sensitive method for nano-environment probing.
  • Showcased applications in glass-forming systems, surface binding, semiconductor interfacial ET, and polymer dynamics.

Conclusions:

  • Single molecule probes based on electron transfer provide sensitive insights into surrounding nano-environments.
  • ET-based fluorescence changes are versatile tools for investigating dynamics across various scientific disciplines.