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Related Concept Videos

Polymers02:34

Polymers

41.5K
The word polymer is derived from the Greek words “poly” which means “many” and “mer” which means “parts”. Polymers are long chains of molecules composed of repeating units of smaller molecules, known as monomers. They either occur naturally, such as DNA and proteins, or can be constructed synthetically, like plastics. They have varied structural characteristics, such as linear chains, branched chains, or complex networks, that contribute to the...
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Polymers02:34

Polymers

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Ionic Crystal Structures02:42

Ionic Crystal Structures

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Ionic crystals consist of two or more different kinds of ions that usually have different sizes. The packing of these ions into a crystal structure is more complex than the packing of metal atoms that are the same size.
Most monatomic ions behave as charged spheres, and their attraction for ions of opposite charge is the same in every direction. Consequently, stable structures for ionic compounds result (1) when ions of one charge are surrounded by as many ions as possible of the opposite...
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Crystal Field Theory - Octahedral Complexes02:58

Crystal Field Theory - Octahedral Complexes

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Crystal Field Theory
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...
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Crystal Growth: Principles of Crystallization01:25

Crystal Growth: Principles of Crystallization

5.2K
Crystallization is a phase transformation process in which crystals are precipitated from a supersaturated solution or formed from other sources. During crystallization, atoms or molecules arrange themselves into a well-defined, rigid crystal lattice to minimize energy.
Initiating crystallization involves manipulating the concentration of the solute and the temperature of the solution. Since crystal growth occurs when the ratio of concentration and solubility of the solute in the solvent...
5.2K
Crystal Field Theory - Tetrahedral and Square Planar Complexes02:46

Crystal Field Theory - Tetrahedral and Square Planar Complexes

48.7K
Tetrahedral Complexes
Crystal field theory (CFT) is applicable to molecules in geometries other than octahedral. In octahedral complexes, the lobes of the dx2−y2 and dz2 orbitals point directly at the ligands. For tetrahedral complexes, the d orbitals remain in place, but with only four ligands located between the axes. None of the orbitals points directly at the tetrahedral ligands. However, the dx2−y2 and dz2 orbitals (along the Cartesian axes) overlap with the ligands less than the dxy,...
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Synthesis of Biocompatible Liquid Crystal Elastomer Foams as Cell Scaffolds for 3D Spatial Cell Cultures
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Nanoporous Polymers Based on Liquid Crystals.

Jody Lugger1,2, Dirk Jan Mulder3,4, Rint Sijbesma5,6

  • 1Laboratory of Supramolecular Polymer Chemistry, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands. j.a.m.lugger@tue.nl.

Materials (Basel, Switzerland)
|January 12, 2018
PubMed
Summary
This summary is machine-generated.

Recent advances in nanoporous networks from polymerisable liquid crystals have yielded polymers with nanoscale channels. Future challenges include integrating these nanoporous membranes into functional devices.

Keywords:
adsorptionfiltrationion conductivityliquid crystalsnanoporous membranespolymer networkseparation

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Area of Science:

  • Materials Science
  • Polymer Chemistry

Background:

  • Nanoporous networks offer unique properties for various applications.
  • Polymerisable liquid crystals provide a versatile platform for creating ordered nanoporous structures.
  • Significant progress has been made in the last decade in this field.

Purpose of the Study:

  • To review recent advancements in nanoporous networks derived from polymerisable liquid crystals.
  • To highlight the development of polymers with controlled 1D, 2D, and 3D nanoporous channels.
  • To identify and discuss future challenges and opportunities in the field.

Main Methods:

  • Review of existing literature on polymerisable liquid crystals and nanoporous materials.
  • Analysis of synthesis strategies for creating ordered polymer networks.
  • Discussion of characterization techniques for nanoporous structures.

Main Results:

  • Demonstration of polymers with tunable 1D, 2D, and 3D channels.
  • Achieved pore sizes on the nanometer scale.
  • Matured field with diverse structural possibilities.

Conclusions:

  • Nanoporous networks from polymerisable liquid crystals represent a significant area of materials science.
  • The integration of these nanoporous membranes into functional devices remains a key future challenge.
  • Continued research is needed to overcome integration hurdles and unlock full application potential.