Results 321 to 330 of about 155,987 (342)

The Universe of Porphyrins [PDF]

, 1980
The simplest member of the porphyrin class of compounds is porphine — a planar molecule comprising four pyrrole rings linked by methene bridges. Strongly stabilized by aromatic conjugation, porphine absorbs in the visible range with electronic transitions giving rise to an intense absorption band in the optical blue: the Soret band just below 400 nm ...
C. G. Whiteley, G. W. Hodgson
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Porphyrin-lipoprotein association as a factor in porphyrin localization

Cancer Letters, 1986
Systemic administration of the tumor-localizing product hematoporphyrin derivative (HPD) to mice bearing the Lewis-Lung tumor leads to an initial distribution of porphyrins among plasma lipoproteins and albumin. The more hydrophobic components of HPD (including the tumor-localizing fraction) preferentially bind to plasma low density lipoprotein (LDL ...
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Cyclotriveratrylene-Containing Porphyrins

Inorganic Chemistry, 2016
The C3-symmetric cyclotriveratrylene (CTV) was covalently bonded via click chemistry to 1, 2, 3, and 6 zinc(II) porphyrin units to various host for C60. The binding constants, Ka, were measured from the quenching of the porphyrin fluorescence by C60. These constants vary between 400 and 4000 M(-1) and are considered weak. Computer modeling demonstrated
Claude P. Gros, Jude Deschamps, Pierre D. Harvey, Adam Langlois, Gaël Martin, Nicolas Desbois, Léo Bucher, Léo Bucher   +7 more
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Excited-state dynamics of porphyrin–naphthalenediimide–porphyrin triads

Phys. Chem. Chem. Phys., 2013
The excited-state dynamics of two triads consisting of a naphthalenediimide (cNDI) substituted at the core by two zinc (ZnP) or free-base tetraphenylporphyrins (FbP) was investigated by ultrafast fluorescence and transient absorption spectroscopy. The electronic absorption spectra of the triads are almost the composites of those of the constituents ...
Villamaina, Diego, Bhosale, Sheshanath V., Langford, Steven J., Vauthey, Eric   +3 more
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Geometry of porphyrin-porphyrin interactions

The Journal of Organic Chemistry, 1988
J. A. Cowan, Jeremy K. M. Sanders, Philip Leighton, Raymond J. Abraham   +3 more
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Porphyrias and Porphyrins

International Journal of Dermatology, 1991
Eugene T Conte, James W. Young
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PORPHYRINS

British Medical Bulletin, 1954
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The spectroscopy of the porphyrins [PDF]

Uspekhi Fizicheskih Nauk, 1963
Konstantin N Solov'ev, G P Gurinovich, A N Sevchenko   +2 more
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Evolution of Porphyrins

Clinics in Dermatology, 1998
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Porphyrin

2011
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