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

28.7K
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...
28.7K
Valence Bond Theory02:42

Valence Bond Theory

10.0K
Coordination compounds and complexes exhibit different colors, geometries, and magnetic behavior, depending on the metal atom/ion and ligands from which they are composed. In an attempt to explain the bonding and structure of coordination complexes, Linus Pauling proposed the valence bond theory, or VBT, using the concepts of hybridization and the overlapping of the atomic orbitals. According to VBT, the central metal atom or ion (Lewis acid) hybridizes to provide empty orbitals of suitable...
10.0K
Ionic Crystal Structures02:42

Ionic Crystal Structures

16.0K
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...
16.0K
Aromatic Hydrocarbon Cations: Structural Overview01:18

Aromatic Hydrocarbon Cations: Structural Overview

3.3K
Cycloheptatriene is a neutral monocyclic unsaturated hydrocarbon that consists of an odd number of carbon atoms and an intervening sp3 carbon in the ring. The three double bonds in the ring correspond to 6 π electrons, which is a Huckel number, and therefore satisfies the criteria of 4n + 2 π electrons. However, the intervening sp3 carbon disrupts the continuous overlap of p orbitals. As a result, cycloheptatriene is not aromatic.
Removing one hydrogen from the intervening CH2 group...
3.3K
Crystal Field Theory - Tetrahedral and Square Planar Complexes02:46

Crystal Field Theory - Tetrahedral and Square Planar Complexes

45.7K
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,...
45.7K
Lewis Structures of Molecular Compounds and Polyatomic Ions02:54

Lewis Structures of Molecular Compounds and Polyatomic Ions

41.3K
To draw Lewis structures for complicated molecules and molecular ions, it is helpful to follow a step-by-step procedure as outlined:
41.3K

You might also read

Related Articles

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

Sort by
Same author

Nanomedicine-Based Therapeutic Strategies for Next-Generation Cancer Immunotherapy.

ACS applied materials & interfaces·2026
Same author

Exploring Privileged Structure Repurposing: Target Similarity as a Catalyst for Cross-Species Drug Discovery.

Journal of medicinal chemistry·2026
Same author

Clinical and neuroimaging correlates of motoric cognitive risk syndrome in cerebral small vessel disease: a cross-sectional study.

Frontiers in aging neuroscience·2026
Same author

Medical escort service demand and service attributes among outpatients based on the Kano model: A cross-sectional study.

Acta psychologica·2026
Same author

SlABH15 Promotes Jasmonate-Mediated Lead Detoxification in Tomato: A Promising Target for Enhancing Phytoremediation and Lead Stress Tolerance.

Journal of agricultural and food chemistry·2026
Same author

miR-150 controls developmental angiogenesis via ribosome biogenesis-dependent regulation of Notch signaling.

Angiogenesis·2026

Related Experiment Video

Updated: Nov 6, 2025

Microfluidic-based Synthesis of Covalent Organic Frameworks COFs: A Tool for Continuous Production of COF Fibers and Direct Printing on a Surface
08:42

Microfluidic-based Synthesis of Covalent Organic Frameworks COFs: A Tool for Continuous Production of COF Fibers and Direct Printing on a Surface

Published on: July 10, 2017

13.7K

High iodine uptake in two-dimensional covalent organic frameworks.

Lingyan Zhang1, Jinheng Li1, Huixin Zhang1

  • 1Tianjin Key Laboratory of Structure and Performance for Functional Molecules, Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry (Ministry of Education), College of Chemistry, Tianjin Normal University, Tianjin, 300387, P. R. China. guiyanliu2013@163.com yfzeng@nankai.edu.cn.

Chemical Communications (Cambridge, England)
|May 10, 2021
PubMed
Summary

Two novel 2-dimensional covalent organic frameworks (COFs) demonstrate exceptional iodine adsorption capabilities. These highly crystalline porous materials exhibit superior performance for iodine capture applications.

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

69.3K
Synthesis and Characterization of Functionalized Metal-organic Frameworks
11:27

Synthesis and Characterization of Functionalized Metal-organic Frameworks

Published on: September 5, 2014

48.6K

Related Experiment Videos

Last Updated: Nov 6, 2025

Microfluidic-based Synthesis of Covalent Organic Frameworks COFs: A Tool for Continuous Production of COF Fibers and Direct Printing on a Surface
08:42

Microfluidic-based Synthesis of Covalent Organic Frameworks COFs: A Tool for Continuous Production of COF Fibers and Direct Printing on a Surface

Published on: July 10, 2017

13.7K
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

69.3K
Synthesis and Characterization of Functionalized Metal-organic Frameworks
11:27

Synthesis and Characterization of Functionalized Metal-organic Frameworks

Published on: September 5, 2014

48.6K

Area of Science:

  • Materials Science
  • Chemistry

Background:

  • Covalent organic frameworks (COFs) are advanced porous materials with tunable structures.
  • Developing COFs with high surface area and specific adsorption properties is crucial for applications like iodine capture.

Purpose of the Study:

  • To rationally design and fabricate two novel 2-dimensional covalent organic frameworks (COFs), named TJNU-203 and TJNU-204.
  • To evaluate the iodine adsorption performance of these newly synthesized COFs.

Main Methods:

  • Fabrication of 2D COFs using a three-connected distorted building block and linear linkers.
  • Characterization of COF crystallinity and specific surface area.
  • Measurement of iodine uptake capacity through physical-chemical adsorption.

Main Results:

  • Successful synthesis of highly crystalline 2D COFs (TJNU-203 and TJNU-204) with large specific surface areas.
  • TJNU-203 achieved an iodine uptake of 5.885 g g-1, and TJNU-204 achieved 5.335 g g-1.
  • The observed high iodine uptake is attributed to effective physical-chemical adsorption mechanisms.

Conclusions:

  • The synthesized COFs (TJNU-203 and TJNU-204) represent some of the best porous materials for iodine adsorption.
  • These COFs show significant potential for applications requiring efficient iodine capture and storage.