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

Catalysis02:50

Catalysis

23.1K
The presence of a catalyst affects the rate of a chemical reaction. A catalyst is a substance that can increase the reaction rate without being consumed during the process. A basic comprehension of a catalysts’ role during chemical reactions can be understood from the concept of reaction mechanisms and energy diagrams.
23.1K
Regioselectivity and Stereochemistry of Acid-Catalyzed Hydration02:34

Regioselectivity and Stereochemistry of Acid-Catalyzed Hydration

8.2K
The rate of acid-catalyzed hydration of alkenes depends on the alkene's structure, as the presence of alkyl substituents at the double bond can significantly influence the rate.
8.2K
UV–Vis Spectroscopy of Conjugated Systems01:32

UV–Vis Spectroscopy of Conjugated Systems

5.9K
Organic compounds with conjugated double bonds show strong absorption features in the UV–visible region of the electromagnetic spectrum attributed to π → π* electronic excitations. Generally, a UV–vis absorption spectrum is recorded as a plot of absorbance vs wavelength. The wavelength of maximum absorbance, which manifests as a peak in the absorption spectrum, is denoted as λmax.
One of the factors influencing λmax is...
5.9K
Photochemical Electrocyclic Reactions: Stereochemistry01:26

Photochemical Electrocyclic Reactions: Stereochemistry

1.4K
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
1.4K
Solubility Equilibria: Ionic Product of Water01:16

Solubility Equilibria: Ionic Product of Water

2.2K
Pure water is a weak electrolyte; only a small amount ionizes into hydrogen and hydroxide ions. At any given temperature, the concentration of undissociated water is almost constant, so the ionic product of water is the product of the hydrogen and hydroxide ion concentrations, denoted as Kw. The square root of Kw gives the individual ion concentrations.
The ionic product of water varies with temperature, and its value is 1.0 x 10−14 at standard experimental conditions. Per Le...
2.2K
Fast Reactions01:27

Fast Reactions

9
Fast reactions occurring in times shorter than the time needed to mix reactants pose a unique challenge for investigation. In a liquid-phase continuous-flow system, reactants A and B are swiftly pushed into the mixing chamber, where mixing occurs within 1 ms. The reaction mixture then flows through an observation tube, and one measures light absorption to determine species concentrations at various points of the tube. This method is most appropriate when relatively large volumes of reactants...
9

You might also read

Related Articles

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

Sort by
Same author

A Biomimetic Copper-Caffeic Acid Nanozyme Activates Cuproptosis and Pyroptosis by Mimicking the Neutrophil Enzymatic Cascade.

Advanced healthcare materials·2026
Same author

Research status and trends of Piezo1 and brain: A bibliometric analysis.

Neuroprotection (Chichester, England)·2026
Same author

Two-year outcomes of modified external suture trabeculotomy for Chinese open-angle glaucoma patients.

Frontiers in medicine·2026
Same author

Cathodic aggregation-induced electrochemiluminescence sensor based on trinuclear iridium complexes for sensing Cu<sup>2+</sup> ions.

Analytica chimica acta·2026
Same author

Partially Reduced PtO Promoted Activation of Oxygen and Ammonia for Ambient Photocatalytic Ammoxidation.

Journal of the American Chemical Society·2026
Same author

CD276 promotes CD36-mediated lipid metabolism and confers resistance to tyrosine kinase inhibitors.

Cancer letters·2026
Same journal

Gas-Responsive Metal-Organic Frameworks for Adaptive Thermal Energy Storage with Tunable Charge-Discharge Temperatures.

Journal of the American Chemical Society·2026
Same journal

Engineering a Thiamine-Dependent Benzoylformate Decarboxylase for Stereodivergent Radical C(sp<sup>3</sup>)-C(sp<sup>3</sup>) Bond Formation.

Journal of the American Chemical Society·2026
Same journal

Accelerated Directional Proton-Coupled Electron Transfer Enabled by Intrinsic Dipole Field in Biomimetic α-Helical Structure.

Journal of the American Chemical Society·2026
Same journal

Alternating Current-Driven Hydrogen Isotope Labeling of Aliphatic Amines Using 1,3-Propanedithiol as an Efficient Hydrogen Atom Transfer Reagent.

Journal of the American Chemical Society·2026
Same journal

Two-Dimensional van der Waals Polar Metal MoOBr<sub>2</sub>.

Journal of the American Chemical Society·2026
Same journal

Negatively Curved Chiral Bilayer Nanographene.

Journal of the American Chemical Society·2026
See all related articles

Related Experiment Video

Updated: May 6, 2026

Preparation and Use of Photocatalytically Active Segmented Ag|ZnO and Coaxial TiO2-Ag Nanowires Made by Templated Electrodeposition
12:47

Preparation and Use of Photocatalytically Active Segmented Ag|ZnO and Coaxial TiO2-Ag Nanowires Made by Templated Electrodeposition

Published on: May 2, 2014

22.1K

Water-Promoted Molar-Level Photocatalysis and Spontaneous Product Separation with Near-Unity Quantum Efficiency.

Yangyang Lu1,2, Ruoming Luo1, Xueyang Leng3

  • 1Soochow Institute for Energy and Materials Innovations (SIEMIS), Soochow University, Suzhou 215006, China.

Journal of the American Chemical Society
|November 25, 2025
PubMed
Summary
This summary is machine-generated.

Water addition significantly enhances photocatalytic amine conversion to imines, achieving high yields and quantum efficiencies (QE) without organic solvents. This sustainable method offers practical, scalable synthesis with easy product separation.

More Related Videos

Photochemical Oxidative Growth of Iridium Oxide Nanoparticles on CdSe@CdS Nanorods
05:41

Photochemical Oxidative Growth of Iridium Oxide Nanoparticles on CdSe@CdS Nanorods

Published on: February 11, 2016

10.0K
Developing Photosensitizer-Cobaloxime Hybrids for Solar-Driven H2 Production in Aqueous Aerobic Conditions
10:21

Developing Photosensitizer-Cobaloxime Hybrids for Solar-Driven H2 Production in Aqueous Aerobic Conditions

Published on: October 5, 2019

8.9K

Related Experiment Videos

Last Updated: May 6, 2026

Preparation and Use of Photocatalytically Active Segmented Ag|ZnO and Coaxial TiO2-Ag Nanowires Made by Templated Electrodeposition
12:47

Preparation and Use of Photocatalytically Active Segmented Ag|ZnO and Coaxial TiO2-Ag Nanowires Made by Templated Electrodeposition

Published on: May 2, 2014

22.1K
Photochemical Oxidative Growth of Iridium Oxide Nanoparticles on CdSe@CdS Nanorods
05:41

Photochemical Oxidative Growth of Iridium Oxide Nanoparticles on CdSe@CdS Nanorods

Published on: February 11, 2016

10.0K
Developing Photosensitizer-Cobaloxime Hybrids for Solar-Driven H2 Production in Aqueous Aerobic Conditions
10:21

Developing Photosensitizer-Cobaloxime Hybrids for Solar-Driven H2 Production in Aqueous Aerobic Conditions

Published on: October 5, 2019

8.9K

Area of Science:

  • Green Chemistry
  • Photocatalysis
  • Organic Synthesis

Background:

  • Photocatalysis offers sustainable routes for redox chemistry and chemical synthesis.
  • Traditional photocatalysis in organic solvents suffers from low reactant concentrations and modest yields, necessitating complex purification.
  • The use of organic solvents raises environmental and practical concerns for large-scale applications.

Purpose of the Study:

  • To investigate the effect of water addition on photocatalytic amine conversion.
  • To develop a solvent-free, efficient, and scalable method for imine synthesis.
  • To enhance quantum efficiencies (QE) and simplify product separation in photocatalytic reactions.

Main Methods:

  • Utilized Ruthenium on Titanium Dioxide (Ru/TiO2) and Rhodium on Titanium Dioxide (Rh/TiO2) photocatalysts.
  • Performed photocatalytic dehydrogenative condensation of amines in the presence of water.
  • Investigated reaction parameters including concentration, scale, and catalyst type.

Main Results:

  • Water addition promoted efficient imine synthesis from amines without organic solvents.
  • Achieved complete conversion of 20 vol% benzylamine with Ru/TiO2, yielding ∼20 g of product with 20% QE.
  • Attained near-unity QE for 70 vol% benzylamine conversion using Rh/TiO2, demonstrating excellent scalability and spontaneous product separation.

Conclusions:

  • Water acts as a promoter by facilitating hydrogen atom desorption and guiding intermediate conversion through favorable pathways.
  • The water-promoted method enables high-concentration amine conversion, outstanding QE, and simplified purification.
  • This approach provides an economical, sustainable, and scalable solution for practical imine synthesis.