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Oscillating Reactions

Chemical clocks: oscillating reactions in chemistry and biochemistry.


Oscillating reactions are chemical processes in which the reaction rate has periodic fluctuations, which may manifest itself, for example, by color changes of the reaction mixture. These reactions have, for example, biochemical significance as biological clocks (circadian clocks) and in certain electrochemical processes.

For the occurrence of an oscillating reaction several conditions must be met, simplified: The oscillating system must be open to an exchange of energy and materials from the surroundings, several (at least two) can take steady states, with between states no thermodynamic equilibrium must have set. The system may oscillate, when a reaction step involves a feedback, such as by autocatalysis.

Below you will find online available information resources on oscillating chemical reactions.

Content, Topics

Lecture Notes, Tutorials

Biochemical Oscillations
Part of an eBook - Format: PDF

The Mathematics of the Brusselator - Format: PDF

Models of Oscillating Chemical Reactions
Particularities of some proposed models for the characterization of chemical oscillations - Format: PDF

Oscillating Chemical Reactions
How do reactions oscillate? - Format: PDF

Oscillating Chemical Reactions
... and nonlinear dynamics - Format: PDF

Oscillating Chemical Reactions
Tutorial - Format: PDF

Oscillating Chemical Reactions
Ordinary differential equations, oscillating chemical reactions, and chaos - Format: PDF

Oscillating Chemical Reactions
Background Information, History, Basics

Oscillating Reactions
Linearized stability analysis

Oscillating Reactions
Lecture notes

Oscillating Reactions
Oscillating Reactions Web Module: Belousov-Zhabotinsky (BZ) reaction; Equations; Oscillations; BZ Code; Video; Linearization

Special Information

Amplified Biochemical Oscillations
... in cellular systems

Autocatalytic Modeling
Nathan Claasen and Shalise Radford differential equations - Format: PDF

Autonomous Oscillation of Polymer Chains
... induced by the Belousov-Zhabotinsky Reaction - Format: PDF

Belousov-Zhabotinskii Reaction
An analysis of the Belousov-Zhabotinskii Reaction

Belousov-Zhabotinsky Oscillator
An overview - Format: PDF

Briggs-Rauscher Reaction
The Briggs-Rauscher Oscillating Reaction - Format: PDF

Briggs-Rauscher Reaction
Lecture demonstrations: yellow to blue switcheroo - Format: PDF

Briggs-Rauscher Reaction
An investigation - Format: PDF

Bromate Oscillators with 1,4-Cyclohexanedione
An example of an oscillatory reaction - Format: PDF

Electrochemical Oscillations
Non-linear phenomena in electrochemical systems - Format: PDF

Iodine Clock
Kinetics of an iodine clock reaction - Format: PDF

Iodine Clock
Chemical kinetics of an iodine clock reaction

Landolt Iodine Clock
Two clear colorless solutions are mixed and after a short period of time turn dark blue - Format: PDF

Peroxidase-Oxidase Reaction
Chaos in oscillating chemical reactions - Format: PDF

The Kinetic Study of the Chemical Oscillating System of 1,3-Propanediol/Acetone as the Organic Substrate - Format: PDF

Synchronization of Oscillating Reactions in an Extended Fluid System
PDF article, Physical Review Letters; 2006 - Format: PDF

Practical Courses

Briggs-Rauscher Reaction
Demonstration of an oscillating reaction

Chemiluminescent Oscillating Demonstrations
The Chemical Buoy, the Lighting Wave, and the Ghostly Cylinder - Format: PDF

Oscillating reactions - Chemical waves
The experiments on this site show the Belousov-Zhabotinsky reaction (or BZ reaction). The theoretical development is very short, but some easy thermodynamical notions are given to improve the comprehension of the observations ...

Simple Oscillating Reaction
Use this teacher demonstration to illustrate an oscillating reaction as bromate ions oxidise malonic acid to carbon dioxide


Oscillating reactions at metal electrodes in solid electrolytes
The transfer of matter and charge across interfaces between two solids is generally related to processes of defect relaxation in the regions near the interface ... Dissertation, University of Giessen, Germany. University of Giessen


Last update: 21.10.2022

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