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Related Concept Videos

Membrane Fluidity01:23

Membrane Fluidity

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Cell membranes are composed of phospholipids, proteins, and carbohydrates loosely attached to one another through chemical interactions. Molecules are generally able to move about in the plane of the membrane, giving the membrane its flexible nature called fluidity. Two other features of the membrane contribute to membrane fluidity: the chemical structure of the phospholipids and the presence of cholesterol in the membrane.
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Solution, Solubility, and Solubility Equilibrium
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The process of surrounding a solute with solvent is called solvation. It involves evenly distributing the solute within the solvent. The rule of thumb for determining a solvent for a given compound is that like dissolves like. A good solvent has molecular characteristics similar to those of the compound to be dissolved. For example, polar solutions dissolve polar solutes, and apolar solvents dissolve apolar solutes. A polar solvent is a solvent that has a high dielectric constant (ϵ...
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The rate of acid-catalyzed hydration of alkenes depends on the alkene's structure, as the presence of alkyl substituents at the double bond can significantly influence the rate.
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Thermal Scanning Conductometry TSC as a General Method for Studying and Controlling the Phase Behavior of Conductive Physical Gels
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Organogels of FmocFF: Exploring the Solvent-Dependent Gelmorphic Behavior.

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  • 1Department of Chemistry, Molecular Imaging and Photonics, KULAK-KU Leuven, E. Sabbelaan 53, 8500 Kortrijk, Belgium.

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|November 26, 2024
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Summary

9-fluorenyl methoxycarbonyl-phenylalanine (FmocFF) forms robust organogels in various solvents. Gel properties depend on solvent choice, crystallinity, and morphology, revealed by rheology and in situ SHG microscopy.

Keywords:
FmocFFSHG microscopygel morphologyorganogelsolvent effect

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Area of Science:

  • Supramolecular Chemistry
  • Materials Science
  • Organic Chemistry

Background:

  • 9-fluorenyl methoxycarbonyl-phenylalanine (FmocFF) is a well-studied low-molecular-weight hydrogelator.
  • The organogelation potential of FmocFF remains underexplored despite extensive hydrogel research.

Purpose of the Study:

  • To systematically investigate the formation and properties of FmocFF-based organogels across a spectrum of organic solvents.
  • To elucidate the factors influencing gelmorphic behavior, mechanical strength, and structural characteristics of FmocFF organogels.

Main Methods:

  • Systematic exploration of FmocFF organogelation in diverse organic solvents.
  • Rheological measurements to assess mechanical strength.
  • In situ second-harmonic generation (SHG) microscopy for native gel structure analysis.

Main Results:

  • FmocFF demonstrates robust organogelation capabilities across various organic solvents.
  • Organogels exhibit diverse gel morphologies and degrees of crystallinity, influenced by the solvent.
  • Mechanical properties and structure are significantly affected by both solvent-solute interactions and the degree of crystallinity.

Conclusions:

  • FmocFF is a versatile organogeltor with tunable properties based on solvent selection.
  • Crystallinity emerges as a critical factor, alongside solvent-solute interactions, in dictating FmocFF organogel structure and mechanical performance.
  • In situ SHG microscopy provides valuable insights into the native state of organogel structures.