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Solubilizing Nonpolar Substances in Polar Solvents: Strategies, Molecular Mechanisms, and Applications
Xiaogang Mu1, Rui Wang1, Shenghui Wang1
1Zhijian Laboratory, Rocket Force University of Engineering, Xi'an 710025, China.
International Journal of Molecular Sciences
|May 27, 2026
Summary
Overcoming the challenge of dissolving nonpolar substances in polar solvents is key for environmental remediation and green chemistry. This review explores thermodynamic principles and innovative strategies for enhanced solubilization.
Area of Science:
- Environmental Science
- Green Chemistry
- Physical Chemistry
Background:
- Solubilizing nonpolar substances in polar solvents is difficult due to the hydrophobic effect, causing low solubility and phase separation.
- This fundamental challenge impacts environmental remediation, green chemistry, and separation technologies.
Purpose of the Study:
- To review the thermodynamic basis of solubilization, including free-energy changes and molecular interactions.
- To discuss current strategies and their applications in enhancing the solubility of nonpolar substances.
Main Methods:
- Thermodynamic analysis of solubilization processes.
- Review of molecular interaction mechanisms.
- Examination of various solubilization strategies and their practical applications.
Main Results:
- The hydrophobic effect presents significant thermodynamic barriers to solubilization.
- Strategies like surface engineering, host-guest inclusion, solvent engineering, and nanostructure encapsulation can overcome these barriers.
- These methods offer practical solutions for environmental and chemical processes.
Conclusions:
- Understanding thermodynamic principles is crucial for efficient solubilization.
- Advanced strategies provide effective means to enhance the solubility of nonpolar compounds.
- Future research should focus on smart materials, green solvents, and simulation-based design.
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