✦ LIBER ✦

Zero-field optically detected magnetic resonance of model compounds for pheophytins

✍ Scribed by Sievert J. Van Der Bent; Tjeerd J. Schaafsma

Publisher: Elsevier Science
Year: 1975
Tongue: English
Weight: 735 KB
Volume: 35
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(75)85586-2

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✦ Synopsis

ZFS pvamzters and kinetic constants of the lowest tiplet state of chlorin znd tetraphenylchlorin free base in n-octene I-avc be-en determined by fluorescence-detected ODhiR at 4.2 IL These compounds can be considered as model compounds for pheaphytin, a compound of biological interest. For both compounds the middle spin-IerEl is the most active one in the populating and depopulating pathwzy. In the lowest triple: state the NH-'NH axis in both chlorins is probabiy fmed to one orientation not involving the reduced ring. and no evidence was found for the occurrence of two tzutomeric forms 3s in the corresponding porphyrins.

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