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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

An overview on AIEgen‐decorated porphyrins: Current status and applications

open access: yesAggregate, 2023
One of the major obstacles of porphyrins is the aggregation‐caused quenching (ACQ) of photoluminescence due to the strong intermolecular π–π interaction of the planar porphyrin core in the solid state.
Govardhana Babu Bodedla   +2 more
doaj   +1 more source

Functionalization of Porphyrins Using Metal-Catalyzed C–H Activation

open access: yesInorganics, 2022
The review is devoted to the C–H functionalization of porphyrins. Porphyrins exhibit the properties of organic semiconductors, light energy converters, chemical and electrochemical catalysts, and photocatalysts.
Aleksey N. Kiselev   +3 more
doaj   +1 more source

Air oxidation of the kerogen/asphaltene vanadyl porphyrins: an electron spin resonance study [PDF]

open access: yesJournal of the Serbian Chemical Society, 2000
The thermal behavior of vanadyl porphyrins was studied by electron spin resonance during heating of kerogens, isolated from the La Luna (Venezuela) and Serpiano (Switzerland) bituminous rocks, at 25°C for 1 to 20 days in the presence of air.
MIRJANA S. PAVLOVIC   +3 more
doaj   +2 more sources

Geospatial Synthesis of Biogeochemical Attributions of Porphyrins to Oil Pollution in Marine Sediments of the Gulf of México

open access: yesGeosciences, 2022
Porphyrins are highly persistent in the environment and represent a helpful biogeochemical attribute to assess the spatial distribution of the effects of oil spills on ecosystems and their resilience.
Francisco Muñoz-Arriola   +1 more
doaj   +1 more source

Low‐Bandgap Porphyrins for Highly Efficient Organic Solar Cells: Materials, Morphology, and Applications

open access: yesAdvances in Materials, 2020
With developments in materials, thin‐film processing, fine‐tuning of morphology, and optimization of device fabrication, the performance of organic solar cells (OSCs) has improved markedly in recent years. Designing low‐bandgap materials has been a focus
Ke Gao   +11 more
semanticscholar   +1 more source

Cellular Localization of Selected Porphyrins and Their Effect on the In Vitro Motility of Human Colon Tumors and Normal Cells

open access: yesMolecules, 2023
Standard therapies for colorectal cancer cannot eliminate or sufficiently reduce the metastasis process. Photodynamic therapy (PDT) may be an alternative to minimizing this problem.
Maciej P. Frant   +4 more
doaj   +1 more source

Carbon monoxide binding to iron porphyrins [PDF]

open access: yes, 1979
The carbon monoxide affinities of iron complexes of meso-tetra (α,α,α,α-o-pivalamidophenyl)porphyrin (the "picket fence" porphyrin) and of a "picket fence" porphyrin derivative with an appended axial base have been measured in solution and compared with ...
Brauman, John I.   +2 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

Assessing the In Vitro Activity of Selected Porphyrins in Human Colorectal Cancer Cells

open access: yesMolecules, 2022
Standard in vitro analyses determining the activity of different compounds included in the chemotherapy of colon cancer are currently insufficient. New ideas, such as photodynamic therapy (PDT), may bring tangible benefits.
Maciej Piotr Frant   +2 more
doaj   +1 more source

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