Issa, R. M. and Zewail, A. H. (1971) Spectrophotometric studies on purpurin and quinalizarin in aqueous solutions. United Arab Republic Journal of Chemistry, 14 (5). pp. 461-472. ISSN 0372-3704. https://resolver.caltech.edu/CaltechAUTHORS:20170706-125723645
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Abstract
The absorption spectra of purpurine and quinalizarin is studied in solutions of varying PH's. The change of spectra with pH indicates the existence of two equilibria between noncharged molecules, singly ionized and doubly ionized species. The pK values of the two equilibria are determined using three methods and are discussed in relation to molecular structure. The effect of pH on the electronic transition reveals that all transitions are influenced by intramolecular charge transfer.
| Item Type: | Article |
|---|---|
| Additional Information: | Received 27/5/1970 |
| Issue or Number: | 5 |
| Record Number: | CaltechAUTHORS:20170706-125723645 |
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20170706-125723645 |
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. |
| ID Code: | 78811 |
| Collection: | CaltechAUTHORS |
| Deposited By: | Donna Wrublewski |
| Deposited On: | 06 Jul 2017 20:38 |
| Last Modified: | 03 Oct 2019 18:12 |
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