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Substituent effects on the excited-state properties of platinummeso-tetraphenylporphyrins

โœ Scribed by Beauford W. Atwater

Publisher
Springer
Year
1992
Tongue
English
Weight
887 KB
Volume
2
Category
Article
ISSN
1053-0509

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๐Ÿ“œ SIMILAR VOLUMES

Substituent effects on the redox reactio
Substituent effects on the redox reactions of tetraphenylporphyrins
โœ Karl M Kadish; Mark M Morrison ๐Ÿ“‚ Article ๐Ÿ“… 1977 ๐Ÿ› Elsevier Science โš– 543 KB

The effect of substituents on pi radical reactions of para-substituted tetraphenylporphyrins was investigated by cyclic voltammetry in methylene chloride. In all cases electron donating substituents produced a more difficult reduction and an easier oxidation. Plots of E1/2 vs. a yielded Hammett line

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โœ D. Weir; J.C. Scaiano ๐Ÿ“‚ Article ๐Ÿ“… 1986 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 305 KB

The room-temperature lifetimes of ring-substituted excited diphenylmethyl radicals have been shown to correlate well with the energy gap between the fluorescent lowest excited doublet and the ground state. Attempts to correlate the lifetimes with Hammett constants were unsuccessful.

Substituent effects on the physical prop
Substituent effects on the physical properties and pKa of aniline
โœ Kevin C. Gross; Paul G. Seybold ๐Ÿ“‚ Article ๐Ÿ“… 2000 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 199 KB ๐Ÿ‘ 2 views

The aniline molecule is nonplanar, with its NH 2 group lying at an angle ฮธ of approximately 42 โ€ข to the plane of the benzene ring. Substituents on the phenyl ring alter this out-of-plane angle as well as other molecular properties such as the ring bond lengths and angles, the barrier to inversion E