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

Colors and Magnetism03:02

Colors and Magnetism

11.4K
Color in Coordination Complexes
When atoms or molecules absorb light at the proper frequency, their electrons are excited to higher-energy orbitals. For many main group atoms and molecules, the absorbed photons are in the ultraviolet range of the electromagnetic spectrum, which cannot be detected by the human eye. For coordination compounds, the energy difference between the d orbitals often allows photons in the visible range to be absorbed and emitted, which is seen as colors by the human...
11.4K

You might also read

Related Articles

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

Sort by
Same author

Metal-center electron affinity modulates multicolor electrochromism in 2D conjugated metal-organic frameworks.

Nature communications·2026
Same author

Deprotonation-Induced Strong Covalent Interfacial Bonding Stabilizes the Solid Electrolyte Interphase and Raises the Performance of Lithium-Ion Batteries.

Journal of the American Chemical Society·2026
Same author

Coupled Electronic-Catalytic Regulation in All-in-One VN/B<sub>2</sub>O<sub>3</sub> Ceramic Enables Fast Polysulfides Conversion in Li-S Batteries.

Angewandte Chemie (International ed. in English)·2026
Same author

Selective Wettability and Pore-Size Exclusion Synergistic Membrane for Efficient Oil-Water Separation.

The journal of physical chemistry letters·2026
Same author

Metastable Structure for Ultra-Sustainable, High Capacity and Kinetics-Enhanced Magnesium-Ion Battery.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)·2026
Same author

Size-dependent pyrolysis pathways of Co-triazolate MOFs tailor carbon-matrix morphology and catalytic site distribution.

Materials horizons·2026

Related Experiment Video

Updated: May 20, 2025

Author Spotlight: Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks
06:53

Author Spotlight: Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks

Published on: June 9, 2023

1.9K

Water-Enhanced Multicolor Electrochromism in Nickel-Catecholate MOFs.

Qi Zhao1, Jing Yang2, Xingyang Wang1

  • 1Department of Materials Science and Engineering, National University of Singapore, Singapore, 117575, Republic of Singapore.

Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
|March 27, 2025
PubMed
Summary

Researchers developed new nickel-catecholate metal-organic frameworks (MOFs) exhibiting multicolor electrochromism. These advanced MOFs offer enhanced stability and faster switching speeds for flexible devices.

Keywords:
coloring mechanismconducting metal–organic frameworksmulticolor electrochromic behaviorwater molecules

More Related Videos

Surface Functionalization of Metal-Organic Frameworks for Improved Moisture Resistance
08:12

Surface Functionalization of Metal-Organic Frameworks for Improved Moisture Resistance

Published on: September 5, 2018

16.0K
Preparation of Polyoxometalate-based Photo-responsive Membranes for the Photo-activation of Manganese Oxide Catalysts
05:47

Preparation of Polyoxometalate-based Photo-responsive Membranes for the Photo-activation of Manganese Oxide Catalysts

Published on: August 7, 2018

7.6K

Related Experiment Videos

Last Updated: May 20, 2025

Author Spotlight: Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks
06:53

Author Spotlight: Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks

Published on: June 9, 2023

1.9K
Surface Functionalization of Metal-Organic Frameworks for Improved Moisture Resistance
08:12

Surface Functionalization of Metal-Organic Frameworks for Improved Moisture Resistance

Published on: September 5, 2018

16.0K
Preparation of Polyoxometalate-based Photo-responsive Membranes for the Photo-activation of Manganese Oxide Catalysts
05:47

Preparation of Polyoxometalate-based Photo-responsive Membranes for the Photo-activation of Manganese Oxide Catalysts

Published on: August 7, 2018

7.6K

Area of Science:

  • Materials Science
  • Electrochemistry
  • Nanotechnology

Background:

  • Metal-organic frameworks (MOFs) show promise as electrochromic materials.
  • Current MOFs face limitations in color tunability, switching speed, and cycling stability.

Purpose of the Study:

  • To develop MOFs with enhanced multicolor electrochromic properties.
  • To investigate the mechanism behind the electrochromic behavior and the role of water molecules.
  • To demonstrate practical applications in flexible devices.

Main Methods:

  • Synthesis of conducting nickel-catecholate (Ni-CAT-1) MOFs.
  • Electrochemical characterization to assess color transitions and stability.
  • Spectroscopic analysis to understand the coloring mechanism.

Main Results:

  • Achieved multicolor electrochromism with transitions from green to blue to purple.
  • Demonstrated significantly improved cycling stability (2000 cycles) and reduced switching time (3.6 s).
  • Revealed the crucial role of water molecules in facilitating redox processes and color interconversion.

Conclusions:

  • Ni-CAT-1 MOFs offer superior electrochromic performance compared to existing systems.
  • Understanding the redox mechanism involving C-O bond interconversion and water's role is key.
  • Developed flexible multicolor electrochromic devices (FMEDs) for applications in camouflage, displays, and AR.