Related Experiment Video
Updated: Jun 27, 2026
09:47
Facile Preparation of Internally Self-assembled Lipid Particles Stabilized by Carbon Nanotubes
Published on: February 19, 2016
9.8K
Carbon Nanoparticle-Induced Changes to Lipid Monolayer Structure at Water-Air Interfaces
Nida Shaikh1, Jessica M Andriolo2,3, Jack L Skinner2,3,4
1Chemistry and Biochemistry Department, Montana State University, Bozeman, Montana 59717, United States.
The Journal of Physical Chemistry. B
|July 25, 2022
Summary
Soluble carbon particulates, specifically PHF, interact with DPPC lipid monolayers at the water-air interface. These interactions decrease compressibility and alter acyl chain ordering, indicating a cooperative adsorption mechanism.
Area of Science:
- Surface chemistry
- Physical chemistry
- Materials science
Background:
- Lipid monolayers at the water-air interface are crucial in biological systems.
- Understanding interactions between insoluble lipids and soluble particulates is key to characterizing interfacial phenomena.
Purpose of the Study:
- To investigate the effects of soluble carbon particulates (PHF) on 1,2-dimyristoyl-sn-glycero-3-phosphocholine (DPPC) lipid monolayers.
- To elucidate the adsorption mechanism and structural consequences of PHF-DPPC interactions.
Main Methods:
- Surface-specific vibrational spectroscopy (VSFG)
- Surface tension measurements
- Spectroscopic ellipsometry
- Langmuir trough technique
Main Results:
- Low concentrations of PHF decrease DPPC monolayer compressibility.
- Positive excess free energies (ΔGmixE) support a cooperative adsorption mechanism.
- PHF alters DPPC acyl chain ordering and film thickness depending on monolayer packing density.
Conclusions:
- Soluble PHF particulates cooperatively adsorb to DPPC lipid monolayers at the water-air interface.
- This adsorption measurably impacts monolayer structure, affecting compressibility and acyl chain order.
- The findings provide insights into interfacial behavior relevant to complex fluid systems.
