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

30.2K
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.
30.2K
Types of Membrane Protrusions01:28

Types of Membrane Protrusions

3.6K
The protrusion of the cell surface is an initial step for several cellular processes, including cell migration, phagocytosis, and neurite outgrowth. These membrane protrusions are a result of cytoskeletal rearrangement. The most  widely observed cell protrusions include lamellipodia, pseudopodia, filopodia, microvilli, invadopodia, and podosomes. These protrusions can be of two types — static or dynamic.
The microvilli, an example of stable protrusions, are finger-like projections...
3.6K
Introduction to Mechanisms of Enzyme Catalysis01:13

Introduction to Mechanisms of Enzyme Catalysis

10.5K
For many years, scientists thought that enzyme-substrate binding took place in a simple "lock-and-key" fashion. This model stated that the enzyme and substrate fit together perfectly in one instantaneous step. However, current research supports a more refined view scientists call induced fit. The induced-fit model expands upon the lock-and-key model by describing a more dynamic interaction between enzyme and substrate. As the enzyme and substrate come together, their interaction causes...
10.5K
Olefin Metathesis Polymerization: Ring-Opening Metathesis Polymerization (ROMP)01:16

Olefin Metathesis Polymerization: Ring-Opening Metathesis Polymerization (ROMP)

3.1K
Ring-opening metathesis polymerization or ROMP involves strained cycloalkenes as starting materials. The mechanism of ROMP proceeds by reacting cycloalkene with Grubbs catalyst to give metallacyclobutane intermediate which undergoes a ring-opening reaction to form new carbene. The new carbene reacts with another molecule of cycloalkene. Repetition of these steps leads to the formation of an unsaturated open-chain polymer product. All these steps are reversible, however, relieving the ring...
3.1K
Actin Polymerization01:42

Actin Polymerization

8.4K
Actin polymerization occurs through the head-to-tail association of binding sites on monomeric actin or G-actin to form filamentous or F-actin. The polymerization can be divided into three phases ̶  nucleation, elongation, and steady-state phase.
The nucleation phase involves forming a stable nucleus consisting of three actin monomers to form a new actin filament. Actin-binding proteins such as formins and Arp2/3 complex help filament growth post-nucleation. The Formins form straight...
8.4K
Types of Hormones02:13

Types of Hormones

83.3K
Hormones can be classified into three main types based on their chemical structures: steroids, peptides, and amines. Their actions are mediated by the specific receptors they bind to on target cells.
83.3K

You might also read

Related Articles

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

Sort by
Same author

Boosting Photocatalytic H<sub>2</sub>O<sub>2</sub> Production via the Synergy of Protonation and Heterojunction in Covalent Organic Frameworks.

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

Synergistic enhancement of thermomechanical properties and oxidation resistance in aligned Co-continuous carbon-ceramic hybrid fibers.

Materials horizons·2024
Same author

Mechanical complexity of living cells can be mapped onto simple homogeneous equivalents.

Biomechanics and modeling in mechanobiology·2024
Same author

Nominally identical microplastic models differ greatly in their particle-cell interactions.

Nature communications·2024
Same author

Enhanced cycling stability of Li-sulfur battery composites by low pressure penetration of PEDOT:PSS coating.

Physical chemistry chemical physics : PCCP·2023
Same author

Extremely low thermal conductivity and high electrical conductivity of sustainable carbon-ceramic electrospun nonwoven materials.

Science advances·2023

Related Experiment Video

Updated: Jan 25, 2026

Facile Synthesis of Worm-like Micelles by Visible Light Mediated Dispersion Polymerization Using Photoredox Catalyst
07:39

Facile Synthesis of Worm-like Micelles by Visible Light Mediated Dispersion Polymerization Using Photoredox Catalyst

Published on: June 8, 2016

10.0K

Wolf-Lamb-type Catalysis in One Pot Using Electrospun Polymeric Catalyst Membranes.

Martin O Pretscher1, Stephan Gekle2, Seema Agarwal1

  • 1Macromolecular Chemistry II, Bavarian Polymer Institute, University of Bayreuth, Universitätsstraße 30, 95440, Bayreuth, Germany.

Macromolecular Rapid Communications
|May 10, 2019
PubMed
Summary

This study demonstrates modular electrospun catalytic membranes for one-pot Wolf-Lamb-type reaction cascades. This compartmentalization approach enables efficient multistep transformations with incompatible catalysts, achieving high product yields.

Keywords:
Wolf-Lamb-typeacid-base catalysisheterogenous catalysisone-pot reactions

More Related Videos

Imine Metathesis by Silica-Supported Catalysts Using the Methodology of Surface Organometallic Chemistry
09:37

Imine Metathesis by Silica-Supported Catalysts Using the Methodology of Surface Organometallic Chemistry

Published on: October 18, 2019

10.1K
HKUST-1 as a Heterogeneous Catalyst for the Synthesis of Vanillin
11:15

HKUST-1 as a Heterogeneous Catalyst for the Synthesis of Vanillin

Published on: July 23, 2016

10.7K

Related Experiment Videos

Last Updated: Jan 25, 2026

Facile Synthesis of Worm-like Micelles by Visible Light Mediated Dispersion Polymerization Using Photoredox Catalyst
07:39

Facile Synthesis of Worm-like Micelles by Visible Light Mediated Dispersion Polymerization Using Photoredox Catalyst

Published on: June 8, 2016

10.0K
Imine Metathesis by Silica-Supported Catalysts Using the Methodology of Surface Organometallic Chemistry
09:37

Imine Metathesis by Silica-Supported Catalysts Using the Methodology of Surface Organometallic Chemistry

Published on: October 18, 2019

10.1K
HKUST-1 as a Heterogeneous Catalyst for the Synthesis of Vanillin
11:15

HKUST-1 as a Heterogeneous Catalyst for the Synthesis of Vanillin

Published on: July 23, 2016

10.7K

Area of Science:

  • Catalysis
  • Materials Science
  • Chemical Engineering

Background:

  • Multistep catalytic reactions with incompatible catalysts require catalyst site isolation.
  • Compartmentalization is a key strategy for achieving this isolation in one-pot systems.
  • Wolf-Lamb-type reactions present specific challenges due to catalyst incompatibility.

Purpose of the Study:

  • To demonstrate the use of modular electrospun catalytic membranes for one-pot Wolf-Lamb-type reaction cascades.
  • To showcase compartmentalization as a method for site isolation of incompatible catalysts.
  • To evaluate the efficiency and scalability of this approach.

Main Methods:

  • Fabrication of acidic and basic electrospun catalytic membranes using specific polymers.
  • Implementation of a two-step, one-pot cascade reaction: deacetylation followed by condensation.
  • Monitoring reaction kinetics using differential equations to analyze reaction step timing.

Main Results:

  • Successful application of modular electrospun membranes for compartmentalized catalysis.
  • High product yield (>90%) achieved in the model two-step cascade reaction.
  • Kinetic analysis revealed the necessity of a parameter (Δt) for the retarded start of the second reaction step.

Conclusions:

  • Electrospun catalytic membranes offer an effective modular approach for compartmentalization in one-pot cascade reactions.
  • This method facilitates the use of incompatible catalysts in Wolf-Lamb-type systems.
  • The developed concept is easy to implement and scalable for industrial applications.