Related Experiment Video
Updated: Aug 7, 2026
16:24
Controlling the Size, Shape and Stability of Supramolecular Polymers in Water
Published on: August 2, 2012
Physicochemical Properties of Dodecylammonium Picrate
Tomasic1, Tusek-Bozic, Visnjevac
1Department of Physical Chemistry, Ruder Boskovic Institute, Zagreb, Croatia
Journal of Colloid and Interface Science
|June 30, 2000
Summary
Researchers synthesized dodecylammonium picrate (DDAP), a novel surfactant. Its properties were studied, revealing how counterion specificity impacts solid-state transitions and solution behaviors like solubility and micellization.
Area of Science:
- Surfactant chemistry
- Physical chemistry
- Materials science
Background:
- Surfactants are crucial in various industrial applications.
- Understanding counterion effects is key to tailoring surfactant behavior.
- Dodecylammonium picrate (DDAP) is a novel surfactant with potential applications.
Purpose of the Study:
- To synthesize and characterize a novel surfactant, dodecylammonium picrate (DDAP).
- To investigate the influence of counterion specificity on DDAP's physicochemical properties.
- To analyze thermal solid-state transitions and solution properties of DDAP.
Main Methods:
- X-ray diffraction for crystal structure determination.
- Spectroscopic techniques (IR, NMR) for chemical analysis.
- Thermal, microscopic, and conductometric studies for property evaluation.
Main Results:
- The crystal structure of DDAP was successfully determined.
- Physicochemical properties including Krafft point, solubility, and critical micelle concentration were measured.
- Counterion specificity was shown to significantly affect thermal transitions and solution properties.
Conclusions:
- DDAP is a novel surfactant with characterized structure and properties.
- Counterion specificity plays a vital role in dictating DDAP's behavior in solid and solution states.
- Findings provide insights into designing surfactants with tailored properties.
Related Concept Videos
02:48Bond Polarity, Dipole Moment, and Percent Ionic Character
Bond Polarity
02:33Physical Properties of Alkanes
Alkanes are nonpolar molecules due to the presence of only carbon and hydrogen atoms. The electronegativity difference between carbon and hydrogen is minimal, and hence alkanes have a zero dipole moment. This leads to the presence of only dispersion forces between the molecules. The strength of dispersion forces is dependent on the surface area of the molecules on which they act. Since the surface area increases with the molecular length for straight-chain alkanes, the dispersion forces also...
01:21Basicity of Aliphatic Amines
Amines can behave as Brønsted–Lowry bases by accepting a proton from the acid to form corresponding conjugate acids. Due to a lone pair of nonbonding electrons, aliphatic amines can also act as Lewis bases by forming a covalent bond with an electrophile.
To measure the basicity of amines, two conventions are generally used. The first defines Kb as the basicity constant for the deprotonation reaction of water by the amine, as presented in Figure 1. Conventionally, lower Kb indicates higher...
To measure the basicity of amines, two conventions are generally used. The first defines Kb as the basicity constant for the deprotonation reaction of water by the amine, as presented in Figure 1. Conventionally, lower Kb indicates higher...
01:19Physical Properties of Carboxylic Acid Derivatives
Intermolecular forces dictate several physical properties such as boiling points, melting points, solubilities, and so forth. They are classified into four types: ionic forces, hydrogen bonds, dipole–dipole forces, and dispersion forces. Ionic forces are the strongest, while dispersion forces are the weakest.
Among the carboxylic acid derivatives, the boiling points of acid chlorides and esters are very similar and are the lowest in the series. Acid anhydrides have slightly higher boiling...
Among the carboxylic acid derivatives, the boiling points of acid chlorides and esters are very similar and are the lowest in the series. Acid anhydrides have slightly higher boiling...
01:26Physical Properties of Amines
Amines with low molecular weight are usually gaseous at room temperature, while those with high molecular weight are liquid or solids in nature. Usually, low molecular weight amines have a rotten fish-like smell. Diamines typically have a pungent smell. For instance, cadaverine and putrescine, depicted in Figure 1, are two molecules responsible for decaying tissue.
01:31Physical Properties of Carboxylic Acids
Carboxylic acids with lower molecular weight exhibit a sharp and unpleasant odor. They also have higher boiling and melting points than analogous compounds, such as aldehydes, ketones, and alcohols.