Related Experiment Video
Updated: Jun 19, 2026
05:20
Characterization of Thermal Transport in One-dimensional Solid Materials
Published on: January 26, 2014
Quantitatively interpreting thermal behavior of self-associating systems.
Ger J M Koper1, Christophe B Minkenberg, Ian S Upton
1DelftChemTech, Delft University of Technology, Julianalaan 136, 2628 BL Delft, The Netherlands.
The Journal of Physical Chemistry. B
|October 21, 2009
Summary
This study introduces a method to analyze calorimetric data for self-associating systems, revealing thermodynamic and structural details. It successfully determines aggregation numbers for surfactant self-assembly, validated by experimental evidence.
Area of Science:
- Physical Chemistry
- Thermodynamics
- Materials Science
Background:
- Calorimetric data provides rich information on molecular interactions.
- Analyzing self-associating systems requires robust thermodynamic models.
- Extracting structural information from calorimetric data is challenging.
Purpose of the Study:
- To present a general method for extracting thermodynamic and structural information from calorimetric data.
- To apply this method to ligand binding and surfactant self-assembly.
- To determine aggregation numbers using a mass balance model.
Main Methods:
- Utilized existing statistical thermodynamic models.
- Applied the method to simple and complex ligand binding systems.
- Employed a simple mass balance model for surfactant self-assembly.
Main Results:
- Successfully extracted thermodynamic and structural information from calorimetric data.
- Determined aggregation numbers for surfactant self-assembly.
- Validated the method with literature examples and experimental evidence.
Conclusions:
- The presented method offers a versatile approach to analyze calorimetric data for self-associating systems.
- It enables the determination of key thermodynamic and structural parameters, including aggregation numbers.
- This approach enhances the understanding of molecular interactions in various systems.
Related Concept Videos
02:46Quantifying Heat
Thermal Energy Microscopically, thermal energy is the kinetic energy associated with the random motion of atoms and molecules. Temperature is a quantitative measure of “hot” or “cold”, which depends on the amount of thermal energy. When the atoms and molecules in an object are moving or vibrating quickly, they have a higher average kinetic energy (KE) (or higher thermal energy), and the object is perceived as “hot”, or it is described as being at a higher temperature. When the atoms and...
01:27Thermal expansion and Thermal stress: Problem Solving
San Francisco's Golden Gate Bridge is exposed to temperatures ranging from -15 °C to 40 °C. At its coldest, the main span of the bridge is 1275 m long. Assuming that the bridge is made entirely of steel, what is the change in its length between these temperatures?
To solve the problem, first, identify the known and unknown quantities. The initial length (L) of the bridge is 1275 m, the coefficient of linear expansion (α) for steel is 12 x 10-6/°C, and the change in temperature (ΔT) is 55 °C.
To solve the problem, first, identify the known and unknown quantities. The initial length (L) of the bridge is 1275 m, the coefficient of linear expansion (α) for steel is 12 x 10-6/°C, and the change in temperature (ΔT) is 55 °C.
01:16Thermal Sigmatropic Reactions: Overview
Sigmatropic rearrangements are a class of pericyclic reactions in which a σ bond migrates from one part of a π system to another. These are intramolecular rearrangements where the total number of σ and π bonds remain unchanged.
Sigmatropic shifts are classified based on an order term [i, j ], where i and j indicate the number of atoms across which each end of the σ bond migrates. Below are examples of a [3,3] sigmatropic shift in 1,5-hexadiene, referred to as...
Sigmatropic shifts are classified based on an order term [i, j ], where i and j indicate the number of atoms across which each end of the σ bond migrates. Below are examples of a [3,3] sigmatropic shift in 1,5-hexadiene, referred to as...
01:06Thermodynamic Systems
A thermodynamic system is a set of objects whose thermodynamic properties are of interest. The system is considered to be embedded in its surroundings or the environment. The system and its environment can exchange heat and do work on each other through a boundary that separates them. However, the immediate surroundings of the system interact with it directly and therefore have a much stronger influence on its behavior and properties.
Consider an example of tea boiling in a kettle. The tea and...
Consider an example of tea boiling in a kettle. The tea and...
02:44Heating and Cooling Curves
When a substance—isolated from its environment—is subjected to heat changes, corresponding changes in temperature and phase of the substance is observed; this is graphically represented by heating and cooling curves.
For instance, the addition of heat raises the temperature of a solid; the amount of heat absorbed depends on the heat capacity of the solid (q = mcsolidΔT). According to thermochemistry, the relation between the amount of heat absorbed or released by a substance, q, and its...
For instance, the addition of heat raises the temperature of a solid; the amount of heat absorbed depends on the heat capacity of the solid (q = mcsolidΔT). According to thermochemistry, the relation between the amount of heat absorbed or released by a substance, q, and its...
02:49Second Law of Thermodynamics
In the quest to identify a property that may reliably predict the spontaneity of a process, a promising candidate has been identified: entropy. Processes that involve an increase in entropy of the system (ΔS > 0) are very often spontaneous; however, examples to the contrary are plentiful. By expanding consideration of entropy changes to include the surroundings, a significant conclusion regarding the relation between this property and spontaneity may be reached. In thermodynamic models, the...