Study of complex formation in the “β cyclodextrin - p aminobenzoic acid” system
Protolytic transitions of p‑aminobenzoic acid from molecular to anionic (or protonated) form were studied by UV spectroscopy. The change of ionization constants values as a result of p‑aminobenzoic acid localization in the hydrophobic cavity of β‑cyclodextrin was demonstrated. It was fo...
Saved in:
| Date: | 2009 |
|---|---|
| Main Authors: | , |
| Format: | Article |
| Language: | Russian |
| Published: |
Chuiko Institute of Surface Chemistry National Academy of Sciences of Ukraine
2009
|
| Online Access: | https://surfacezbir.com.ua/index.php/surface/article/view/329 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Journal Title: | Surface |
| Download file: |  |
Institution
Surface| Summary: | Protolytic transitions of p‑aminobenzoic acid from molecular to anionic (or protonated) form were studied by UV spectroscopy. The change of ionization constants values as a result of p‑aminobenzoic acid localization in the hydrophobic cavity of β‑cyclodextrin was demonstrated. It was found that p‑amonobenzoic acid forms supramolecular structures with stoichiometric composition 1 : 1. The stability constants of “β‑cyclodextrin - p‑aminobenzoic acid” inclusion complex at 289, 292, 313 K and thermodynamic parameters involved in the complex formation (∆G°, ∆H°, ∆S°) were calculated. |
|---|