Results 21 to 30 of about 64,218 (310)

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

Directed Molecular Stacking for Engineered Fluorescent Three-Dimensional Reduced Graphene Oxide and Coronene Frameworks [PDF]

open access: yes, 2019
[EN] Three‐dimensional fluorescent graphene frameworks with controlled porous morphologies are of significant importance for practical applications reliant on controlled structural and electronic properties, such as organic electronics and photochemistry.
Botchway, S. W   +9 more
core   +1 more source

Porphyrins at interfaces

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

Porphyrinic metal-organic frameworks for biological applications

open access: yesAdvanced Sensor and Energy Materials, 2023
Porphyrins and their derivatives have been extensively applied in various fields owing to their photophysical and electrochemical properties. However, the drawbacks of self-aggregation and self-quenching in aqueous media limit their biological ...
Li-Jian Chen, Xu Zhao, Xiu-Ping Yan
doaj   +1 more source

Conjugatable water-soluble Pt(ii) and Pd(ii) porphyrin complexes: Novel nano- and molecular probes for optical oxygen tension measurement in tissue engineering [PDF]

open access: yes, 2014
Measurement of oxygen tension in compressed collagen sheets was performed using matrix-embedded optical oxygen sensors based on platinum(II) and palladium(II) porphyrins supported on polyacrylamide nanoparticles.
Athanasiadis, A.   +8 more
core   +1 more source

The photodynamic and non-photodynamic actions of porphyrins

open access: yesBrazilian Journal of Medical and Biological Research, 1999
Porphyrias are a family of inherited diseases, each associated with a partial defect in one of the enzymes of the heme biosynthetic pathway. In six of the eight porphyrias described, the main clinical manifestation is skin photosensitivity brought about ...
S.G. Afonso   +2 more
doaj   +1 more source

Reactions of HNO with Metal Porphyrins: Underscoring the Biological Relevance of HNO [PDF]

open access: yes, 2014
Azanone (1 HNO, nitroxyl) shows interesting yet poorly understood chemical and biological effects. HNO has some overlapping properties with nitric oxide (NO), sharing its biological reactivity toward heme proteins, thiols, and oxygen.
Bikiel, Damian Ezequiel   +4 more
core   +1 more source

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

Water-Solubilization of P(V) and Sb(V) Porphyrins and Their Photobiological Application

open access: yesInternational Journal of Photoenergy, 2015
Porphyrins have been widely utilized as biochemical and biological functional chromophores which can operate under visible-light irradiation. Water-soluble porphyrins have been used as the drug for photodynamic therapy (PDT) and photodynamic inactivation
Jin Matsumoto   +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

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