Synthesis of pyropheophytin-anthraquinone linked molecules as models for the study of photoinduced electron transfer
โ Scribed by Andrei Y. Tauber; Risto K. Kostiainen; Paavo H. Hynninen
- Book ID
- 104203081
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- French
- Weight
- 733 KB
- Volume
- 50
- Category
- Article
- ISSN
- 0040-4020
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โฆ Synopsis
Abstractz me fmt synthesis of pyropheophytin-anthraquinone compounds with the quinone covalenUy linked to the P4 allylic position of the phytyl chain is described. The results of preliminary conformational studies are reported for the two P4 steaeoisomers obtained. These results suggest differences in the orientation of the anthraquinonyl-phytyI moiety relative to the phorbin macrocycle In the isomers.
๐ SIMILAR VOLUMES
The solution structures of the P4-epimers of Zn(II)-pyropheophytin-anthraquinone dyads (ZnPQ1 and ZnPQ2) were determined using two-dimensional NMR spectroscopy and molecular modeling. The mutual orientation of the anthraquinone and Zn-pyropheophytin rings was found to be di โ erent in the two P4-epim
The preparation of a doubly cofacial porphyrin trimer consisting of a Zn mesoporphyrin -Zn mesoporphyrin mesoporphyrin stack is described. The optical absorp,tion and fluorescence properties of the molecule as a function of solvent are also reported.