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Related Concept Videos

Two Components: Liquid–Liquid Systems01:27

Two Components: Liquid–Liquid Systems

A pressure-composition phase diagram explicitly describes the behavior of an ideal solution of two volatile liquids under varying pressures and compositions. A pressure-composition diagram has two main curves. The bubble point curve represents the plot of pressure versus liquid mole fraction. It indicates the pressure at which the first bubble of vapor forms from the liquid phase as the system pressure decreases.The dew point curve is the pressure versus vapor mole fraction. It indicates the...
Nonideal Two-Component Liquid Solutions01:29

Nonideal Two-Component Liquid Solutions

Nonideal liquid solutions, also known as real solutions, do not strictly follow Raoult's law. Raoult's law is a rule of thumb in physical chemistry. However, not all mixtures adhere to this law due to varying molecular interactions. For example, in an acetone/chloroform solution, the individual vapor pressures of the components are lower than expected, resulting in a total vapor pressure below that predicted by Raoult's law, causing a negative deviation.On the other hand, in an ethanol/water...
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The process of a solid dissolving in a liquid to form a solution is governed by the solubility limit, which is the maximum amount of the solid substance, or solute, that can be dissolved in a specific volume of the liquid or solvent. As the solute dissolves, it reaches a point where no more solute can be dissolved at a given temperature - this is known as the saturation point. However, if further solute is added and it manages to dissolve, the solution becomes supersaturated. Supersaturated...

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Liquid-nano-liquid interface-oriented anisotropic encapsulation.

Yating Zhan1, Xirui Huang1, Minchao Liu1

  • 1Department of Chemistry, State Key Laboratory of Molecular Engineering of Polymers, College of Chemistry and Materials, iChem (Collaborative Innovation Center of Chemistry for Energy Materials), Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200433, China.

Proceedings of the National Academy of Sciences of the United States of America
|January 10, 2025
PubMed
Summary
This summary is machine-generated.

Researchers developed a novel liquid-nano-liquid interface strategy to create asymmetric nanohybrids. This method enables precise control over nanoparticle encapsulation, leading to diverse nanostructures with potential applications in nanomedicine.

Keywords:
anisotropic assemblyemulsion interfacemesoporousnanohybridsnanoparticle

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Area of Science:

  • Materials Science and Engineering
  • Nanotechnology
  • Colloid and Surface Chemistry

Background:

  • Emulsion interface engineering is crucial for synthesizing diverse nanomaterials.
  • Limitations in controlling nanomaterial fabrication arise from interfacial instability and interactions.

Purpose of the Study:

  • To develop a liquid-nano-liquid interface-oriented strategy for fabricating asymmetric nanohybrids.
  • To achieve controllable synthesis of various nanostructures through anisotropic encapsulation.

Main Methods:

  • Anisotropic encapsulation of functional nanoparticles (magnetic, fluorescent, Au nanorods) using mesoporous polydopamine (mPDA).
  • Manipulation of nanoparticle wetting behavior at the water/oil interface using emulsion stabilizers (surfactants).
  • Fabrication of diverse nanostructures: core-shell, yolk-shell, ball-in-bowl, and multipetal.

Main Results:

  • Successful anisotropic encapsulation of various functional nanoparticles by mPDA.
  • Demonstration of controllable formation of diverse asymmetric nanostructures.
  • Proof-of-concept nanomotors (Fe3O4@SiO2&mPDA) showed effective bacterial biofilm penetration and infected wound healing promotion.

Conclusions:

  • The developed strategy offers a new perspective for designing morphologically controllable asymmetric nanostructures.
  • Microemulsion systems based on liquid-nano-liquid interfaces hold significant potential for innovative functional nanomaterials.
  • Asymmetric nanohybrids exhibit promising biomedical applications due to their unique structural and functional properties.