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Related Concept Videos

Cohesion01:07

Cohesion

Cohesion is the attraction between molecules of the same type, such as water molecules. Water molecules have an overall neutral charge but are polar molecule. An oxygen atom in one water molecule has a partial negative charge that can bind to a hydrogen atom with a partial positive charge in a second water molecule, forming a hydrogen bond. Each water molecule can form up to four hydrogen bonds with other water molecules. Hydrogen bonds are responsible for water's cohesive nature.
On a surface,...
Adaptations that Reduce Water Loss01:57

Adaptations that Reduce Water Loss

Though evaporation from plant leaves drives transpiration, it also results in loss of water. Because water is critical for photosynthetic reactions and other cellular processes, evolutionary pressures on plants in different environments have driven the acquisition of adaptations that reduce water loss.
Intermolecular Forces03:13

Intermolecular Forces

Atoms and molecules interact through bonds (or forces): intramolecular and intermolecular. The forces are electrostatic as they arise from interactions (attractive or repulsive) between charged species (permanent, partial, or temporary charges) and exist with varying strengths between ions, polar, nonpolar, and neutral molecules. The different types of intermolecular forces are ion–dipole, dipole–dipole, hydrogen bonds, and dispersion; among these, dipole–dipole, hydrogen bonds, and dispersion...
Noncovalent Attractions in Biomolecules02:35

Noncovalent Attractions in Biomolecules

Noncovalent attractions are associations within and between molecules that influence the shape and structural stability of complexes. These interactions differ from covalent bonding in that they do not involve sharing of electrons.
Four types of noncovalent interactions are hydrogen bonds, van der Waals forces, ionic bonds, and hydrophobic interactions.
Hydrogen bonding results from the electrostatic attraction of a hydrogen atom covalently bonded to a strong-electronegative atom like oxygen,...
Noncovalent Attractions in Biomolecules02:35

Noncovalent Attractions in Biomolecules

Noncovalent attractions are associations within and between molecules that influence the shape and structural stability of complexes. These interactions differ from covalent bonding in that they do not involve sharing of electrons.
Four types of noncovalent interactions are hydrogen bonds, van der Waals forces, ionic bonds, and hydrophobic interactions.
Hydrogen bonding results from the electrostatic attraction of a hydrogen atom covalently bonded to a strong-electronegative atom like oxygen,...
Waterproofing and Anti-Bacterial Admixtures in Concrete01:22

Waterproofing and Anti-Bacterial Admixtures in Concrete

Concrete's susceptibility to water absorption is due to the capillary action within the pores of its hydrated cement paste. This action draws water in, creating the need for waterproofing admixtures to prevent such penetration. The efficacy of these admixtures is contingent upon the water pressure, with variations arising from different conditions such as rain, capillary rise, or hydrostatic pressure in structures intended to hold water.
Waterproofing admixtures render concrete hydrophobic,...

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Updated: May 31, 2026

Surface Functionalization of Metal-Organic Frameworks for Improved Moisture Resistance
08:12

Surface Functionalization of Metal-Organic Frameworks for Improved Moisture Resistance

Published on: September 5, 2018

Noncovalent water-based materials: robust yet adaptive.

Elisha Krieg1, Boris Rybtchinski

  • 1Department of Organic Chemistry, Weizmann Institute of Science, Rehovot 76100, Israel.

Chemistry (Weinheim an Der Bergstrasse, Germany)
|July 5, 2011
PubMed
Summary
This summary is machine-generated.

Robust noncovalent materials with adaptive properties can be created using strong hydrophobic interactions. These water-based assemblies offer a promising alternative to conventional polymers, enabling new applications.

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Area of Science:

  • Materials Science
  • Supramolecular Chemistry

Background:

  • Noncovalent materials offer adaptive properties like self-healing and stimuli-responsiveness.
  • Poor robustness limits the real-world application of traditional noncovalent systems.

Purpose of the Study:

  • To explore the creation of robust noncovalent arrays using strong hydrophobic interactions.
  • To demonstrate the potential of these materials as alternatives to conventional polymers.

Main Methods:

  • Utilizing strong hydrophobic interactions to form noncovalent arrays.
  • Designing aqueous assemblies with aromatic amphiphiles featuring extended hydrophobic cores.

Main Results:

  • Developed robust noncovalent arrays with multiple stimuli-responsiveness and pathway-dependent self-assembly.
  • Demonstrated functional materials, such as filtration membranes, that rival covalent systems.
  • Showcased the potential of water-based noncovalent materials.

Conclusions:

  • Strong hydrophobic interactions can yield robust and adaptive noncovalent materials.
  • These materials can be processed in water, offering environmental benefits.
  • Water-based noncovalent materials show promise for replacing or complementing conventional polymers in diverse applications.