I found that hydrophobic comprised of many types such as pi-sigma interaction, alkyl interaction etc. What are the differences between them? Can someone enlighten me? I am still new in this field. Thank you in advance.
The intermolecular interaction of two hydrophobic/hydrophilic molecules can consist of two or more contributions. For example, the intermolecular interaction of alkyl carboxylic acids in water consists of a hydrogen bond and a hydrophobic interaction. The intermolecular interaction of two pyrimidine bases consists of a stack and a hydrophobic interaction. Two hydrophobic ions with opposite charges from electrostatic and hydrophobic interaction. Such a division can be made by changing the Gibbs energy of their contributions.