Results 21 to 30 of about 76,963 (249)

Chiral porphyrin assemblies

open access: yesAggregate, 2023
Porphyrins are among the most important macrocycles because they perform many essential functions in living systems and serve as building blocks in many functional materials. Incorporating the chirality into porphyrins can aid biomimetic research and the
Li Zhang   +3 more
doaj   +1 more source

Phosphates Induced H-Type or J-Type Aggregation of Cationic Porphyrins with Varied Side Chains

open access: yesMolecules, 2023
Non-covalent interactions have been extensively used to fabricate nanoscale architectures in supramolecular chemistry. However, the biomimetic self-assembly of diverse nanostructures in aqueous solution with reversibility induced by different important ...
Zhiliang Li   +4 more
doaj   +1 more source

Preliminary study of metalloporphyrins in some oil shales, red sea, Egypt

open access: yesEgyptian Journal of Petroleum, 2017
Occurence and distribution of metalloporphyrins were studied in asphaltene and maltene fractions of some Egyptian oil shales from the main producing mines (Abu-Shegeili, El-Beida, El-Nakheil and Abu-Tundub I, II) in red sea area (Fig.
S.M. El-Sabagh   +3 more
doaj   +1 more source

Active loading into extracellular vesicles significantly improves the cellular uptake and photodynamic effect of porphyrins.

open access: yesJournal of Controlled Release, 2015
Extracellular vesicles (EVs) are phospholipid-based particles endogenously produced by cells. Their natural composition and selective cell interactions make them promising drug carriers.
G. Fuhrmann   +4 more
semanticscholar   +1 more source

Photophysical and Bactericidal Properties of Pyridinium and Imidazolium Porphyrins for Photodynamic Antimicrobial Chemotherapy

open access: yesMolecules, 2021
Despite advances achieved over the last decade, infections caused by multi-drug-resistant bacterial strains are increasingly becoming important societal issues that need to be addressed.
Florent Le Guern   +7 more
doaj   +1 more source

Xenobiotics Triggering Acute Intermittent Porphyria and Their Effect on Mouse Brain Respiratory Complexes

open access: yesJournal of Xenobiotics
Heme enzyme dysfunction causes a group of diseases called porphyrias. Particularly, a decrease in porphobilinogen deaminase, involved in the third step of heme biosynthesis, leads to acute intermittent porphyria (AIP).
Johanna Romina Zuccoli   +3 more
doaj   +1 more source

Effect of Antiepileptic Drugs on the Urinary Excretion of Porphyrins in Non-porphyric Subjects

open access: yesJournal of Pharmacological Sciences, 2005
The action of some anticonvulsant drugs as the causal agents of attacks of acute porphyria has been widely documented in the literature. However, little attention has been paid to the effect of these drugs on the urinary excretion of porphyrins in non ...
Maria J. Tutor-Crespo   +2 more
doaj   +1 more source

A Modified Vilsmeier–Haack Strategy to Construct β-Pyridine-Fused 5,10,15,20-Tetraarylporphyrins

open access: yesSynOpen, 2020
A modified Vilsmeier–Haack strategy has been developed to construct a novel series of π-extended nickel(II) or copper(II) complexes of 2-chloro-3-formyl- and 3-formylpyrido[2,3-b]porphyrins from 2-acetamido-meso-tetraarylporphyrins. After chromatographic
Pargat Singh, Mahendra Nath
doaj   +1 more source

Anthracene‐Porphyrin Nanoribbons

open access: yesAngewandte Chemie International Edition, 2023
Abstract π‐Conjugated nanoribbons attract interest because of their unusual electronic structures and charge‐transport behavior. Here, we report the synthesis of a series of fully edge‐fused porphyrin‐anthracene oligomeric ribbons (dimer and trimer), together with a computational study of the corresponding ...
Zhu, H   +4 more
openaire   +3 more sources

Synthesis and Photostability of Cyclooctatetraene-Substituted Free Base Porphyrins

open access: yesChemistry, 2021
A series of free base meso-tetraarylporphyrins functionalized with substituents containing one, two, and four cyclooctatetraene (COT) moieties have been obtained and characterized by spectral and photophysical studies. Three COT-free porphyrins served as
Joanna Buczyńska   +6 more
doaj   +1 more source

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