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Metal ions can be separated from one another by complexation with organic ligands–the chelating agent– to form uncharged chelates. Here, the chelating agent must contain hydrophobic groups and behave as a weak acid, losing a proton to bind with the metal. Since most organic ligands used in this process are insoluble or undergo oxidation in the aqueous phase, the chelating agent is initially added to the organic phase and extracted into the aqueous phase. The metal-ligand complex is...
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Bacterial Immobilization for Imaging by Atomic Force Microscopy
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Atomic single-molecule imaging by the confinement methods in advanced microscopy.

Jiale Feng1,2, Mengmeng Ma1,2, Bin Song1,2

  • 1Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University, Suzhou 215123, China.

Fundamental Research
|January 30, 2026
PubMed
Summary
This summary is machine-generated.

Atomic single-molecule imaging techniques visualize small molecules. Spatial confinement using microporous materials like zeolites enables room-temperature imaging of molecular structures and behaviors.

Keywords:
Atomic resolutionConfinement methodMicroscopyMolecular configurationSingle-molecule imaging

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Area of Science:

  • Physical Chemistry
  • Materials Science
  • Nanotechnology

Background:

  • Atomic single-molecule imaging is crucial for understanding small molecule properties.
  • Current methods face challenges like thermal activity and beam sensitivity.
  • Ångström-level resolution has been achieved using techniques like scanning tunneling microscopy and electron microscopy.

Purpose of the Study:

  • To review confinement strategies in single-molecule imaging.
  • To summarize recent studies on single-molecule structures and behaviors.
  • To highlight novel confinement approaches.

Main Methods:

  • Focus on spatial confinement strategies in various imaging techniques.
  • Discuss the use of microporous materials (e.g., zeolites) for molecular confinement.
  • Analyze recent studies employing these confinement methods.

Main Results:

  • Spatial confinement at room temperature is achievable using microporous materials.
  • Zeolites enable the fixation and visualization of single molecules within their channels.
  • This approach overcomes limitations of thermal activity and beam sensitivity.

Conclusions:

  • Confinement strategies significantly advance single-molecule imaging capabilities.
  • Microporous materials offer a promising route for room-temperature molecular visualization.
  • Future research directions include exploring new confinement applications and potential discoveries.