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

Thermal and Photochemical Electrocyclic Reactions: Overview01:26

Thermal and Photochemical Electrocyclic Reactions: Overview

2.3K
Electrocyclic reactions are reversible reactions. They involve an intramolecular cyclization or ring-opening of a conjugated polyene. Shown below are two examples of electrocyclic reactions. In the first reaction, the formation of the cyclic product is favored. In contrast, in the second reaction, ring-opening is favored due to the high ring strain associated with cyclobutene formation.
2.3K
Photochemical Electrocyclic Reactions: Stereochemistry01:26

Photochemical Electrocyclic Reactions: Stereochemistry

1.8K
The absorption of UV–visible light by conjugated systems causes the promotion of an electron from the ground state to the excited state. Consequently, photochemical electrocyclic reactions proceed via the excited-state HOMO rather than the ground-state HOMO. Since the ground- and excited-state HOMOs have different symmetries, the stereochemical outcome of electrocyclic reactions depends on the mode of activation; i.e., thermal or photochemical.
Selection Rules: Photochemical Activation
1.8K
Oxidation and Reduction of Organic Molecules01:19

Oxidation and Reduction of Organic Molecules

6.1K
Energy production within a cell involves many coordinated chemical pathways. Most of these pathways are combinations of oxidation and reduction reactions, which occur at the same time. An oxidation reaction strips an electron from an atom in a compound, and the addition of this electron to another compound is a reduction reaction. Because oxidation and reduction usually occur together, these pairs of reactions are called redox reactions.
The removal of an electron from a molecule, results in a...
6.1K
Crown Ethers02:36

Crown Ethers

5.1K
Crown ethers are cyclic polyethers that contain multiple oxygen atoms, usually arranged in a regular pattern. The first crown ether was synthesized by Charles Pederson while working at DuPont in 1967. For this work, Pedersen was co-awarded the 1987 Nobel Prize in Chemistry. Crown ethers are named using the formula x-crown-y, where x is the total number of atoms in the ring and y is the number of ether oxygen atoms. The term 'crown' refers to the crown-like shape that these ether...
5.1K

You might also read

Related Articles

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

Sort by
Same author

Recent Advances in Transition Metal-Based Catalysts and Strategies for Promoting Alkaline Water Electrolysis.

ChemSusChem·2026
Same author

Electrocatalytic methane oxidation <i>via</i> integrated design of mechanism, microenvironment, and mass transfer.

Chemical science·2026
Same author

Spin-Dominated Reconstruction Kinetics in Prussian Blue Analog Enables Efficient Seawater Splitting.

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

Suppressing Charge Screening via Z-Scheme With Polarization Field for In Situ H<sub>2</sub>O<sub>2</sub> Generation and Utilization.

Advanced materials (Deerfield Beach, Fla.)·2026
Same author

Asymmetric charge-polarization tailoring active hydrogen transfer for selective photoreduction CO<sub>2</sub> to CH<sub>4</sub>.

Nature communications·2026
Same author

Lattice strain-mediated MoSe<sub>2</sub> enable superior piezocatalysis activity for upcycling of organic pollutants.

Nature communications·2026

Related Experiment Video

Updated: May 29, 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

13.3K

Ether-Embedded Covalent Organic Frameworks Enable Efficient Photocatalytic CO2 Reduction.

Desen Zhou1, Qi Chen1, Jun Zhang1

  • 1Key Laboratory of Green Chemical Process of Ministry of Education, Hubei Key Laboratory of Novel Reactor and Green Chemical Technology, School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Wuhan, 430205, P. R. China.

Angewandte Chemie (International Ed. in English)
|February 7, 2025
PubMed
Summary

Introducing ether groups into porphyrin-triazine covalent organic frameworks (COFs) enhances photocatalytic carbon dioxide (CO2) reduction. This modification improves electron transfer and CO2 conversion into solar fuels.

Keywords:
CO2 adsorptionCO2 reductionCOFsElectron enrichmentPhotocatalysis

More Related Videos

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

2.3K
Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction
10:57

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction

Published on: April 10, 2018

18.1K

Related Experiment Videos

Last Updated: May 29, 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

13.3K
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

2.3K
Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction
10:57

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction

Published on: April 10, 2018

18.1K

Area of Science:

  • Materials Science
  • Photocatalysis
  • Green Chemistry

Background:

  • Photocatalytic conversion of carbon dioxide (CO2) into solar fuels offers a sustainable energy solution.
  • Efficiently directing photogenerated electrons to CO2 active sites is crucial for high-performance CO2 reduction.
  • Porphyrin-triazine covalent organic frameworks (COFs) are promising materials for CO2 photoreduction.

Purpose of the Study:

  • To enhance the photocatalytic efficiency of porphyrin-triazine COFs for CO2 reduction.
  • To investigate the role of embedded functional groups in regulating photogenerated electron transfer.
  • To develop novel COF materials with improved solar fuel production capabilities.

Main Methods:

  • Synthesis of ether-embedded porphyrin-triazine COFs (TOT-TAPP, BOD-TAPP, QOB-TAPP).
  • Evaluation of photocatalytic activity for CO2 reduction.
  • Utilizing theoretical calculations and in situ characterizations to understand electron transfer mechanisms.

Main Results:

  • Ether-embedded COFs exhibited significantly faster charge transport compared to non-ether-embedded counterparts.
  • The ether group accelerated the separation of photogenerated charge carriers.
  • Enhanced accumulation of electrons at the C=N imine bond sites promoted CO2 photoreduction efficiency.

Conclusions:

  • Embedding ether groups into porphyrin-triazine COFs is an effective strategy to boost photocatalytic CO2 reduction.
  • Ether groups play a key role in optimizing electron transfer dynamics and CO2 activation.
  • These findings pave the way for developing advanced materials for solar fuel production and greenhouse gas mitigation.