Journal
JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS
Volume 23, Issue 1, Pages 180-185Publisher
SPRINGER
DOI: 10.1007/s10904-012-9726-4
Keywords
Porphyrin; Zn(II) complex; Quinone; Folding structure; Structural switching
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Funding
- Ministry of Education, Culture, Sports, Science, and Technology, Japan
- [2107]
- [21108012]
- Grants-in-Aid for Scientific Research [21108012, 25410065] Funding Source: KAKEN
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We report the synthesis of a novel quinone-sandwiched porphyrin in which two benzoquinones are connected oppositely at the meso positions of a porphyrin through rigid 3-amido 2,2'-bipyridine linkers. H-1-NMR and single crystal X-ray analyses revealed that the quinone-sandwiched porphyrin has a folded structure in which the porphyrin unit was inserted into the two quinone moieties via pi-stacking. Insertion of a Zn(II) ion into the porphyrin center induced a drastic conformational change which is resulted in coordination of the oxygen atoms of both benzoquinone moieties to the Zn-porphyrin to afford a 6-coordinated structure.
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