Results 81 to 90 of about 179,442 (256)

A Route to Surface-bound Metalloporphyrins as Models for Oxygen Reduction Catalysts [PDF]

open access: yes, 2017
The attachment nonmetal and magnesium ethynyl terminated porphyrin (TEPP and MgTEPP) to glassy carbon electrode was achieved through voltammetry. These attached porphyrins were studied by cyclic voltammetry (CV) and UV-visible spectroscopy. Surface-bound
Van Wyck, Stephen J
core   +1 more source

A Soft On/Off Switch Based on the Electrochemically Reversible H-J Interconversion of a Floating Porphyrin Membrane [PDF]

open access: green, 2021
Andrés F. Molina-Osorio   +4 more
openalex   +1 more source

The porphyrin metabolism in liver cirrhosis

open access: yesТерапевтический архив, 2013
AIM: To comparatively study porphyrin metabolic disturbances in liver cirrhosis (LC) of varying etiology and to estimate the diagnostic and prognostic value of the detected disorders/MATERIAL AND METHODS: Seventy-one patients were examined; among them 34,
A B Krivosheev   +4 more
doaj  

Design, Synthesis, and Pharmacological Screening of Novel Porphyrin Derivatives

open access: yesJournal of Chemistry, 2013
A series of porphyrin derivatives 2a–f was synthesized, namely, 5,10,15,20-mesotetrakis[p-methoxyphenyl]-21H,23H-porphyrin (2a), 5,10,15,20-mesotetrakis[2,6-dichloro-phenyl]-21H,23H-porphyrin (2b), 5,10,15,20-mesotetrakis[4-hydroxy-3,5-dimethoxyphenyl ...
Ahmed A. Fadda   +5 more
doaj   +1 more source

Porphyrin Functionalized Graphene for Sensitive Electrochemical Detection of Uric Acid

open access: yesInternational Journal of Electrochemical Science, 2016
In this study, by employing nanobiocomposite from porphyrin modified graphene oxide, we make a stable and sensitive amperometric UA amperometric biosensor.
Yun Yang   +5 more
doaj   +1 more source

A case of porphyria cutanea tarda in the setting of hepatitis C infection and tobacco usage [PDF]

open access: yes, 2019
Porphyria cutanea tarda (PCT) is the most common type of porphyria, presenting in middle-aged patients with a photodistributed vesiculobullous eruption, milia, and scars.
Brinster, NK   +4 more
core  

Supramolecular Self-Assembled Nanostructures Derived from Amplified Structural Isomerism of Zn(II)−Sn(IV)−Zn(II) Porphyrin Triads and Their Visible Light Photocatalytic Degradation of Pollutants

open access: yesNanomaterials
Two structural isomeric porphyrin-based triads (Zn(II)porphyrin−Sn(IV)porphyrin−Zn(II)porphyrin) denoted as T1 and T2 were prepared from the reaction of meso-[5-(4-hydroxyphenyl)-10,15,20-tris(3,5-di-tert-butylphenyl)porphyrinato]zinc(II) (ZnL) with ...
Nirmal Kumar Shee, Hee-Joon Kim
doaj   +1 more source

Probing the origin of fluorescence quenching of a graphene-porphyrin hybrid material

open access: yesEPJ Web of Conferences, 2013
We report transient absorption spectroscopic studies on the hybrid material composed of porphyrin molecules covalently attached to graphene for investigating the mechanism underlying the reported fluorescence quenching of porphyrin in the hybrid [1 ...
Huijser Annemarie   +5 more
doaj   +1 more source

Electronic structure of porphyrin-based metal– organic frameworks and their suitability for solar fuel production photocatalysis [PDF]

open access: yes, 2015
Metal–organic frameworks (MOFs) can be exceptionally good catalytic materials thanks to the presence of active metal centres and a porous structure that is advantageous for molecular adsorption and confinement.
Aziz, Alex   +5 more
core  

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