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Related Concept Videos

Intermolecular Forces03:13

Intermolecular Forces

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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...
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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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Comparing Intermolecular Forces: Melting Point, Boiling Point, and Miscibility02:34

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Intermolecular forces are attractive forces that exist between molecules. They dictate several bulk properties, such as melting points, boiling points, and solubilities (miscibilities) of substances. Molar mass, molecular shape, and polarity affect the strength of different intermolecular forces, which influence the magnitude of physical properties across a family of molecules.
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Intermolecular vs Intramolecular Forces03:00

Intermolecular vs Intramolecular Forces

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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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The polymerization process that involves carbanion as an intermediate is called anionic polymerization. It is also a type of addition or chain-growth polymerization. Anionic polymerization gets initiated by a strong nucleophile such as an organolithium or a Grignard reagent. The most commonly used initiator for anionic polymerization is butyl lithium. Monomers involved in anionic polymerization must possess a vinyl group bonded to one or two electron-withdrawing groups. For instance,...
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Updated: Sep 29, 2025

From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding
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Strong Dynamic Interfacial Adhesion by Polymeric Ionic Liquids under Extreme Conditions.

Xinling Deng1, Jiaqi Tang1, Wang Guan1

  • 1Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, PR China.

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|March 18, 2022
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Summary

Researchers developed new polymers with strong adhesion for extreme conditions. These materials maintain stability in organic solvents and ultracold temperatures, offering solutions for oil and gas applications.

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interfacesionic liquidspolymeric adhesivesresistance to organic solventsultralow temperature resistance

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Area of Science:

  • Materials Science
  • Polymer Chemistry

Background:

  • Interfacial adhesion is crucial for applications like stopping oil/gas leaks.
  • Adhesion stability is a challenge at ultralow temperatures and in organic solvents.

Purpose of the Study:

  • To investigate molecular-level processes governing interfacial adhesion under extreme conditions.
  • To develop stable and adaptive functional materials for real-world applications.

Main Methods:

  • Prepared four linear polymers using an intermolecular force-control strategy.
  • Tuned hydrogen bonding proportions and electrostatic site numbers.
  • Investigated adhesion at various interfaces, including tolerance to organic solvents and ultracold temperatures.

Main Results:

  • Synthesized polymeric ion liquids exhibiting strong dynamic adhesion.
  • Demonstrated efficient tolerance to organic solvents and ultracold temperatures.
  • Observed highly reversible rheological behaviors across a wide thermal cycle.

Conclusions:

  • The intermolecular force-control strategy yields environmentally adaptive functional materials.
  • Molecular-level understanding of adhesion/debonding processes was achieved through spectroscopy and theoretical calculations.
  • Developed materials show promise for applications requiring robust interfacial adhesion under extreme conditions.