Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Crystal Field Theory - Octahedral Complexes02:58

Crystal Field Theory - Octahedral Complexes

28.5K
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...
28.5K
Crystal Field Theory - Tetrahedral and Square Planar Complexes02:46

Crystal Field Theory - Tetrahedral and Square Planar Complexes

47.6K
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...
47.6K
Thermal Sigmatropic Reactions: Overview01:16

Thermal Sigmatropic Reactions: Overview

1.6K
Sigmatropic rearrangements are a class of pericyclic reactions in which a σ bond migrates from one part of a π system to another. These are intramolecular rearrangements where the total number of σ and π bonds remain unchanged.
Sigmatropic shifts are classified based on an order term [i, j ], where i and j indicate the number of atoms across which each end of the σ bond migrates. Below are examples of a [3,3] sigmatropic shift in...
1.6K
Complexation Equilibria: The Chelate Effect01:19

Complexation Equilibria: The Chelate Effect

1.7K
In complexation reactions, metal atoms or cations interact with ligands to form donor-acceptor adducts called metal complexes. Ligands that bind through one donor site are monodentate, ligands with two donor sites are bidentate, and those with more than two donor sites are polydentate ligands. For example, ethylene diamine is a bidentate ligand that binds through two nitrogen donor atoms, forming a five-membered ring. EDTA is a polydentate ligand that binds through four oxygen and two nitrogen...
1.7K
Ionic Crystal Structures02:42

Ionic Crystal Structures

18.1K
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...
18.1K
Phase Diagrams of Ternary Systems01:28

Phase Diagrams of Ternary Systems

167
Consider a ternary system, which is composed of three components: water (W), ethanoic acid (E), and trichloromethane (T). Here, Ethanoic acid (E) is fully miscible with both water (W) and trichloromethane (T), meaning it can mix entirely with either of them. However, water and trichloromethane have partial miscibility, meaning they can only mix to a certain extent, beyond which two separate phases will form.The phase diagram of a ternary system is represented as an equilateral triangle, where...
167

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Coronary Angiography-Derived Index of Microvascular Resistance.

Frontiers in physiology·2021
Same author

Three-Dimensional Metamaterial for Plasmon-Enhanced Raman Scattering at any Excitation Wavelengths from the Visible to Near-Infrared Range.

Analytical chemistry·2020
Same author

Correction to: Predicting and clustering plant CLE genes with a new method developed specifically for short amino acid sequences.

BMC genomics·2020
Same author

Transferrin receptor (TFRC) is essential for meiotic progression during mouse spermatogenesis.

Zygote (Cambridge, England)·2020
Same author

Effect of aspartic acid on the crystallization kinetics of ACP and dentin remineralization.

Journal of the mechanical behavior of biomedical materials·2020
Same author

Model vs. observation discrepancy in aerosol characteristics during a half-year long campaign in Northeast China: The role of biomass burning.

Environmental pollution (Barking, Essex : 1987)·2020

Related Experiment Video

Updated: May 7, 2026

Phase Diagram Characterization Using Magnetic Beads as Liquid Carriers
12:37

Phase Diagram Characterization Using Magnetic Beads as Liquid Carriers

Published on: September 4, 2015

12.1K

LCST-type phase behavior induced by pillar[5]arene/ionic liquid host-guest complexation.

Shengyi Dong1, Bo Zheng, Yong Yao

  • 1Department of Chemistry, Zhejiang University, Hangzhou, 310027, P. R. China.

Advanced Materials (Deerfield Beach, Fla.)
|October 10, 2013
PubMed
Summary
This summary is machine-generated.

A dipropoxypillar[5]arene and ionic liquid complex shows a lower critical solution temperature (LCST) phase transition in chloroform. This behavior is tunable and useful for separation applications.

Keywords:
host-guest systemsionic liquidslower critical solution temperaturepillararenessupramolecular chemistry

More Related Videos

From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding
06:44

From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding

Published on: March 24, 2018

71.2K
Orientational Transition in a Liquid Crystal Triggered by the Thermodynamic Growth of Interfacial Wetting Sheets
06:26

Orientational Transition in a Liquid Crystal Triggered by the Thermodynamic Growth of Interfacial Wetting Sheets

Published on: May 15, 2017

6.4K

Related Experiment Videos

Last Updated: May 7, 2026

Phase Diagram Characterization Using Magnetic Beads as Liquid Carriers
12:37

Phase Diagram Characterization Using Magnetic Beads as Liquid Carriers

Published on: September 4, 2015

12.1K
From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding
06:44

From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding

Published on: March 24, 2018

71.2K
Orientational Transition in a Liquid Crystal Triggered by the Thermodynamic Growth of Interfacial Wetting Sheets
06:26

Orientational Transition in a Liquid Crystal Triggered by the Thermodynamic Growth of Interfacial Wetting Sheets

Published on: May 15, 2017

6.4K

Area of Science:

  • Supramolecular Chemistry
  • Materials Science

Background:

  • Host-guest complexation plays a crucial role in designing functional materials.
  • Ionic liquids offer unique solvent properties and tunable characteristics.

Purpose of the Study:

  • To investigate the phase transition behavior of a dipropoxypillar[5]arene and 1,3-dimethylimidazolium iodide complex.
  • To explore the potential of this system for separation applications.

Main Methods:

  • Synthesis and characterization of the host-guest complex.
  • Solubility studies in chloroform.
  • Observation of lower critical solution temperature (LCST)-type phase transition.

Main Results:

  • The dipropoxypillar[5]arene-ionic liquid complex exhibits an LCST-type phase transition in chloroform.
  • The phase transition temperature is sensitive to experimental parameters.
  • The system demonstrates potential for product and educt separation.

Conclusions:

  • The studied host-guest complex displays tunable LCST behavior.
  • This phenomenon can be exploited for efficient separation processes involving ionic liquids.