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Volumn 5, Issue 9, 1999, Pages 2668-2679

Side-to-face ruthenium porphyrin arrays: Photophysical behavior of dimeric and pentameric systems

Author keywords

Energy transfer; Photochemistry; Porphyrin arrays; Supramolecular chemistry

Indexed keywords

CHLOROPHYLL; PORPHYRIN; RUTHENIUM;

EID: 0032819540     PISSN: 09476539     EISSN: None     Source Type: Journal    
DOI: 10.1002/(sici)1521-3765(19990903)5:9<2668::aid-chem2668>3.0.co;2-m     Document Type: Article
Times cited : (111)

References (92)
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    • Abbreviations: TPP=5,10,15,20-tetraphenylporphyrin; 4′MPyP= 5-(4′-pyridyl)-10,15,20-triphenylporphyrin; 4′TPyP=5,10,15,20-tetra-(4′-pyridyl)porphyrin; 3′MPyP=5-(3′-pyridyl)-10,15,20-triphenylporphyrin; 3′TPyP=5,10,15,20-tetra(3′-pyridyl)porphyrin.
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    • We thank a referee for pointing out this problem in an early version of this paper.
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    • [45, 50] have been found to take place efficiently across a variety of similarly twisted connecting groups.
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    • This is a true symmetry axis only for the perpendicular arrays. It could also be considered for the canted arrays to describe the local symmetry of the axial junction.
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    • [55]
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    • In the perpendicular and canted arrays, respectively, the center-to-center distances are about 9.8 and 8.6 Å, and the number of bonds intervening between the porphyrin rings is six and five.
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    • -1, respectively. In these systems, the center-to-center distance was about 13.6 Å and the through-bond pathway between the porphyrin rings involved 15 bonds.
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    • The phenyl rings on TPP are hindered with respect to rotation about the C(meso)-C(phenyl) bond and are nearly perpendicular to the Ru(TPP) mean plane. Therefore the ortho and meta protons on one side of each phenyl ring (endo-H) fall into the anisotropic region of the perpendicular pyridylporphyrin and experience its shielding effect; their resonances are consequently shifted upfield compared to those of the corresponding exo protons.


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