Results 11 to 20 of about 167,383 (325)

The shape of porphyrins [PDF]

open access: yesCoordination Chemistry Reviews, 2021
Abstract Porphyrin molecules are a widely exploited biochemical moiety, with uses in medicinal chemistry, sensing and materials science. The shape of porphyrins, as an aromatic unit, is reductively imagined to be approximately flat, with regular, rigid shape, owing to the popular depiction as a simplified skeletal model.
Christopher J. Kingsbury   +2 more
openaire   +4 more sources

Porphyrins at interfaces [PDF]

open access: yesNature Chemistry, 2015
Porphyrins and other tetrapyrrole macrocycles possess an impressive variety of functional properties that have been exploited in natural and artificial systems. Different metal centres incorporated within the tetradentate ligand are key for achieving and regulating vital processes, including reversible axial ligation of adducts, electron transfer ...
Willi Auwärter   +3 more
openaire   +3 more sources

PET/PDT theranostics: Synthesis and biological evaluation of a peptide-targeted gallium porphyrin [PDF]

open access: yes, 2015
The development of novel theranostic agents is an important step in the pathway towards personalised medicine, with the combination of diagnostic and therapeutic modalities into a single treatment agent naturally lending itself to the optimisation and ...
Boyle, Ross W.   +3 more
core   +1 more source

Porphyrin Wheels [PDF]

open access: yesJournal of the American Chemical Society, 1996
A simple method to prepare porphyrin 'wheels' on a micrometer scale is described. It is possible to arrange several types of porphyrin derivatives, including Protoporphyrin IX and Chlorophyll-a, in the form of rings using this method. A mechanism for the formation of these types of assemblies is proposed that is based on the generation of '2D-gas ...
Schenning, A.P.H.J   +4 more
openaire   +2 more sources

Porphyrin-derived carbon dots for an enhanced antiviral activity targeting the CTD of SARS-CoV-2 nucleocapsid

open access: yesJournal of Genetic Engineering and Biotechnology, 2023
Background Since effective antiviral drugs for COVID-19 are still limited in number, the exploration of compounds that have antiviral activity against SARS-CoV-2 is in high demand. Porphyrin is potentially developed as a COVID-19 antiviral drug. However,
Azzania Fibriani   +14 more
doaj   +1 more source

Urinary porphyrin excretion in hepatitis C infection [PDF]

open access: yes, 1999
A high prevalence of hepatitis C virus infection in porphyria cutanea tarda in some populations suggests a close link between viral hepatitis and alteration of porphyrin metabolism.
Jacob, Karl   +2 more
core   +1 more source

Synthesis of Fe(II)/Co(II)-Fused Triphenyl Porphyrin Dimer as Candidate for Oxygen Reduction Reaction Catalyst

open access: yesIndonesian Journal of Chemistry, 2021
This paper reports the synthesis of Fe(II)/Co(II) fused triphenyl porphyrin dimers as candidate of hybrid organic metal electrocatalyst. The synthesis was conducted in five-step reactions using the starting materials pyrrole and benzaldehyde.
Atmanto Heru Wibowo   +6 more
doaj   +1 more source

The biosynthesis of porphyrins [PDF]

open access: yesErgebnisse der Physiologie Biologischen Chemie und Experimentellen Pharmakologie, 1948
This article is intended as a summary of some of the work which has been done, over the past ten years, on the biosynthesis of porphyrins. The treatment accorded to this subject should not be considered to be that of an exhaustive review article. It will consider only those papers which, in the author’s opinion, are most pertinent to the particular ...
openaire   +4 more sources

Normalwerte der Porphyrine und Porphyrin-Vorstufen [PDF]

open access: yesClinical Chemistry and Laboratory Medicine, 1968
Normal values for the concentrations of porphyrins and porphyrin precursors With the methods routinely employed for porphyrinopathias, normal values were measured on 20—50 healthy persons and compared with the literature values. Die Differenzierung der hepatischen und erythropoetischen Formen der Porphyrinopathien ruckt immer mehr in den Vordergrund ...
GORECZKY, L., RÓTH, I., BRECKNER, M.
openaire   +4 more sources

Effect Of Zinc Cations On The Kinetics Of Supramolecular Assembly And The Chirality Of Porphyrin J-Aggregates [PDF]

open access: yes, 2017
Dilute aqueous solutions of anionic meso-4-sulfonatophenyl-porphyrin (TPPS) extract zinc(ii) ions from glass or quartz surfaces at room temperature and efficiently form the corresponding metal complex (ZnTPPS). The partial or complete formation of ZnTPPS
Castriciano, M. A.   +5 more
core   +3 more sources

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