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

Imperfections in Crystal Structure: Non-Stoichiometric Defects01:29

Imperfections in Crystal Structure: Non-Stoichiometric Defects

Non-stoichiometric defects refer to a type of defect in the crystal structure of a compound where the ratio of its constituent elements deviates from the ideal stoichiometric ratio. There are two main types of non-stoichiometric defects: metal excess defects and metal deficiency defects.Metal excess defects occur when there is a slight surplus of metal ions than what is required by the stoichiometric ratio of the compound. For example, heating a sodium chloride crystal in sodium vapor results...
Imperfections in Crystal Structure: Stoichiometric Point Defects01:26

Imperfections in Crystal Structure: Stoichiometric Point Defects

Schottky defects arise when some lattice points in a crystal, such as those in NaCl, remain unoccupied, creating lattice vacancies without disturbing the overall electrical neutrality of the crystal. This defect is common in ionic crystals where the positive and negative ions are similar in size, as seen in sodium chloride and cesium chloride. The presence of Schottky defects enables the crystal to conduct electricity to a small extent through an ionic mechanism. Electric fields cause nearby...
Imperfections in Crystal Structure: Point, Line and Plane Defects01:25

Imperfections in Crystal Structure: Point, Line and Plane Defects

A perfect crystal, in theory, has a uniform structure with the same unit cell and lattice points throughout. However, any deviation from this periodic arrangement is known as an imperfection or defect. These defects can be categorized into three types: point, line, and plane defects.Point defects occur when there is a deviation from the ideal due to missing atoms, displaced atoms, or additional atoms. These imperfections might occur due to imperfect packing during crystallization or because of...
Lumber Defects01:23

Lumber Defects

Lumber defects, which can affect both the appearance and structural integrity of wood, include a variety of growth and manufacturing flaws. Growth defects such as knots and knotholes occur where branches were once attached to the tree trunk, with knotholes forming when these knots fall out. Other natural defects include decay and insect damage, which compromise the wood's strength and durability.
Shakes are minor fractures that run along or across the wood's annual rings, while wane is...
Mismatch Repair01:20

Mismatch Repair

Organisms are capable of detecting and fixing nucleotide mismatches that occur during DNA replication. This sophisticated process requires identifying the new strand and replacing the erroneous bases with correct nucleotides. Mismatch repair is coordinated by many proteins in both prokaryotes and eukaryotes.
The Mutator Protein Family Plays a Key Role in DNA Mismatch Repair
The human genome has more than 3 billion base pairs of DNA per cell. Prior to cell division, that vast amount of genetic...
Mismatch Repair01:36

Mismatch Repair

Overview

You might also read

Related Articles

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

Sort by
Same author

Development and Validation of a Multivariable Nomogram Predictive of Kidney Function after Cardiopulmonary Resuscitation.

Kidney diseases (Basel, Switzerland)·2026
Same author

In Situ Fabricated Three-Dimensional Composite Electrode of Mo-Ni<sub>3</sub>S<sub>2</sub>/Nickel Foam for Enhanced Electrocatalytic Hydrogen Evolution.

Langmuir : the ACS journal of surfaces and colloids·2026
Same author

Amorphous Ru-bda MCOF: A Frontier in Heterogeneous Molecular Catalysis for Water Oxidation.

Inorganic chemistry·2026
Same author

RMScratcher: An edge-AI platform for high-throughput analysis of rodent scratching behavior.

Journal of neuroscience methods·2026
Same author

The effects of traditional Chinese mind-body training on physical health in university students: a multilevel meta-analysis.

Frontiers in physiology·2026
Same author

Single-crystal to single-crystal editing of metal-organic frameworks via ligand removal.

Nature chemistry·2026
Same journal

Influence of Magnetic Field and Solvent Environment on Laser-Ablated Ag and Cu-Based Nanoparticles: Optical and Thermal Correlations.

Chemphyschem : a European journal of chemical physics and physical chemistry·2026
Same journal

Beyond Conventional Catalyst Design: A Perspective on the Inverse Catalyst Strategy in Ammonia Synthesis and Decomposition.

Chemphyschem : a European journal of chemical physics and physical chemistry·2026
Same journal

A Theoretical Study of Electron Attachment to Uracil and 5-Halouracil.

Chemphyschem : a European journal of chemical physics and physical chemistry·2026
Same journal

A Short Review on the Electron Transfer at the Interface Metal/Semiconductor During Hydrogen Ions Reduction to H<sub>2</sub> Under Photoirradiation.

Chemphyschem : a European journal of chemical physics and physical chemistry·2026
Same journal

Spectroscopic Investigation of the In Vivo Light-Dependent Photodynamics of the Marine Diatom Phaeodactylum tricornutum.

Chemphyschem : a European journal of chemical physics and physical chemistry·2026
Same journal

Atomistic Insights into the Thermal Decomposition and Runaway Mechanism of Peroxypropionic Acid.

Chemphyschem : a European journal of chemical physics and physical chemistry·2026
See all related articles

Related Experiment Video

Updated: May 23, 2026

Comprehensive Characterization of Extended Defects in Semiconductor Materials by a Scanning Electron Microscope
11:14

Comprehensive Characterization of Extended Defects in Semiconductor Materials by a Scanning Electron Microscope

Published on: May 28, 2016

Defects in MOFs: a thorough characterization.

Petko St Petkov1, Georgi N Vayssilov, Jinxuan Liu

  • 1Faculty of Chemistry and Pharmacy, University of Sofia, 1126 Sofia, Bulgaria.

Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry
|April 21, 2012
PubMed
Summary
This summary is machine-generated.

The most defect-free surface-mounted metal-organic frameworks (SURMOFs) contain approximately 4% defective copper (Cu) sites, confirmed by multiple experimental and computational methods. This finding is crucial for understanding and optimizing SURMOF properties.

More Related Videos

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

Synthesis and Characterization of Functionalized Metal-organic Frameworks

Published on: September 5, 2014

A Technical Guide for Performing Spectroscopic Measurements on Metal-Organic Frameworks
10:13

A Technical Guide for Performing Spectroscopic Measurements on Metal-Organic Frameworks

Published on: April 28, 2023

Related Experiment Videos

Last Updated: May 23, 2026

Comprehensive Characterization of Extended Defects in Semiconductor Materials by a Scanning Electron Microscope
11:14

Comprehensive Characterization of Extended Defects in Semiconductor Materials by a Scanning Electron Microscope

Published on: May 28, 2016

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

Synthesis and Characterization of Functionalized Metal-organic Frameworks

Published on: September 5, 2014

A Technical Guide for Performing Spectroscopic Measurements on Metal-Organic Frameworks
10:13

A Technical Guide for Performing Spectroscopic Measurements on Metal-Organic Frameworks

Published on: April 28, 2023

Area of Science:

  • Materials Science
  • Surface Chemistry
  • Nanotechnology

Background:

  • Surface-mounted metal-organic frameworks (SURMOFs) are advanced materials with tunable properties.
  • Accurate characterization of defect sites is essential for understanding SURMOF performance.
  • Copper (Cu) sites are critical components in many SURMOF applications.

Purpose of the Study:

  • To precisely quantify the defect concentration in the most defect-free SURMOFs.
  • To reconcile conflicting data from different characterization techniques.
  • To establish a reliable method for defect analysis in SURMOFs.

Main Methods:

  • X-ray diffraction (XRD) for structural analysis.
  • Infrared (IR) spectroscopy to probe guest molecule interactions.
  • Computational simulations to model framework behavior.
  • X-ray photoelectron spectroscopy (XPS) for surface elemental analysis.

Main Results:

  • XRD data indicated highly crystalline SURMOFs with minimal defects.
  • IR spectroscopy of CO guest molecules revealed an unexpected two-signal spectrum.
  • Computer simulations and XPS experiments confirmed the presence of approximately 4% defective Cu sites.
  • Reconciliation of XRD and IR data was achieved by accounting for these defect sites.

Conclusions:

  • Even the most defect-free SURMOFs exhibit a small but significant concentration of defective Cu sites (around 4%).
  • A combination of experimental techniques and computational modeling is necessary for accurate defect characterization.
  • Understanding and controlling these defects is key to optimizing SURMOF functionality.