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Intermolecular Forces in Solutions02:28

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The formation of a solution is an example of a spontaneous process, a process that occurs under specified conditions without energy from some external source.
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Intermolecular forces (IMF) are electrostatic attractions arising from charge-charge interactions between molecules. The strength of the intermolecular force is influenced by the distance of separation between molecules. The forces significantly affect the interactions in solids and liquids, where the molecules are close together. In gases, IMFs become important only under high-pressure conditions (due to the proximity of gas molecules). Intermolecular forces dictate the physical properties of...
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Light-driven Molecular Motors on Surfaces for Single Molecular Imaging
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Light-Driven Reversible Intermolecular Proton Transfer at Single-Molecule Junctions.

Shuning Cai1, Wenting Deng1, Feifei Huang1

  • 1State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, iChEM, Xiamen University, Xiamen, 361005, China.

Angewandte Chemie (International Ed. in English)
|January 29, 2019
PubMed
Summary
This summary is machine-generated.

Researchers developed a photoinduced proton transfer (PIPT) strategy to create light-controlled molecular electronic devices using non-photoresponsive molecules. This breakthrough enables reversible control over charge transport and logic gate operations with visible light.

Keywords:
electronic devicesmaterials sciencemolecular electronicsphotochemistryproton transfer

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Area of Science:

  • Molecular electronics
  • Supramolecular chemistry
  • Photochemistry

Background:

  • Photoresponsive molecular systems are crucial for molecular optoelectronics.
  • Most molecular building blocks lack inherent photoresponsiveness.
  • Controlling charge transport in single-molecule junctions is a key challenge.

Purpose of the Study:

  • To develop a strategy for creating photoresponsive molecular devices from non-photoresponsive components.
  • To control charge transport in single-molecule junctions using visible light.
  • To demonstrate the application of this strategy in molecular logic gates.

Main Methods:

  • Utilized a photoinduced proton transfer (PIPT) strategy.
  • Employed single-molecule azulene junctions.
  • Operated under visible light at ambient conditions.

Main Results:

  • Achieved reversible and controllable photoresponsive molecular devices.
  • Demonstrated control over charge transport through single-molecule azulene junctions.
  • Successfully implemented PIPT in single-molecule AND and OR gate devices with electrical outputs.

Conclusions:

  • Photoinduced proton transfer (PIPT) offers a viable route to engineer photoresponsive behavior in non-photoresponsive molecular systems.
  • This approach enables the development of light-switchable molecular electronic devices and logic gates.
  • The strategy provides a versatile platform for advanced molecular optoelectronics.