Results 1 to 10 of about 64,218 (310)

Magnetic exchange coupling of a synthetic Co(II)-complex to a ferromagnetic Ni substrate [PDF]

open access: yes, 2013
On-surface assembly of a spin-bearing and non-aromatic porphyrin-related synthetic Co(II)-complex on a ferromagnetic Ni thin film substrate and subsequent magnetic exchange interaction across the interface were studied by scanning tunnelling microscopy ...
Ali, Md Ehesan   +14 more
core   +1 more source

Synthesis and properties amphiphilic meso-arylsubstituted porphyrins

open access: yesТонкие химические технологии, 2007
Synthesis of amphiphilic meso-arylsubstituted porphyrins with hydrophobic long chain groups and with terminal carboxylic and hydroxylic groups via dipyrrolylmethanes and with the use of monopyrrolic condensation is described.
I. N. Fedulova   +5 more
doaj  

Entropy analysis of nickel(II) porphyrins network via curve fitting techniques

open access: yesScientific Reports, 2023
Nickel(II) porphyrins typically adopt a square planar coordination geometry, with the nickel atom located at the center of the porphyrin ring and the coordinating atoms arranged in a square plane.
Muhammad Talha Farooq   +2 more
doaj   +1 more source

Ab initio molecular dynamics study of manganese porphine hydration and interaction with nitric oxide

open access: yes, 2007
The authors use ab initio molecular dynamics and the density functional theory+U (DFT+U) method to compute the hydration environment of the manganese ion in manganese (II) and manganese (III) porphines (MnP) dispersed in liquid water.
Craig J. Medforth   +4 more
core   +1 more source

Electronic structure of an iron porphyrin derivative on Au(1 1 1) [PDF]

open access: yes, 2018
Surface-bound porphyrins are promising candidates for molecular switches, electronics and spintronics. Here, we studied the structural and the electronic properties of Fe-tetra-pyridil-porphyrin adsorbed on Au(1 1 1) in the monolayer regime.
Czekelius, Constantin   +5 more
core   +2 more sources

Synthesis and properties of zirconium-based porphyrin metal organic frameworks

open access: yes上海师范大学学报. 自然科学版
Porphyrins are ubiquitous in nature and are of great interest due to their excellent photophysical and electrochemical properties. However, intrinsic defects of porphyrins, such as instabilities, self-quenching, and poor water solubility, limit its ...
PENG Longxuan   +4 more
doaj   +1 more source

Porphyrins as Theranostic Agents from Prehistoric to Modern Times

open access: yesTheranostics, 2012
Long before humans roamed the planet, porphyrins in blood were serving not only as indispensable oxygen carriers, but also as the bright red contrast agent that unmistakably indicates injury sites.
Yumiao Zhang, Jonathan F. Lovell
doaj  

Synthesis of Asymmetrical Porphyrins Substituted in the meso-Position from Dipyrrolomethanes

open access: yesMolecules, 2000
A convenient procedure for the synthesis of 5-(4-acetamidophenyl)-10,15,20-tris(4-substituted phenyl) porphyrins from dipyrrolomethane is reported. meso-(4-Substituted phenyl) dipyrrolomethanes were obtained in yields of 72-84%. The amide porphyrins were
E. N. Durantini   +3 more
doaj   +1 more source

Effects of the Addition of Ortho- and Para-NH2 Substituted Tetraphenylporphyrins on the Structure of Nylon 66

open access: yesInternational Journal of Polymer Science, 2013
The synthetic tetrapyrrole macrocycles, such as porphyrins (H2P) and phthalocyanines (H2Pc), exhibit interesting physicochemical properties suitable to be used in modern technology.
Luis A. Díaz-Alejo   +4 more
doaj   +1 more source

Synthesis, Thermal Stability and Electrocatalytic Activities of meso-tetrakis (5-bromothiophen-2-yl) Porphyrin and Its Cobalt and Copper Complexes

open access: yesInternational Journal of Electrochemical Science, 2018
Linearly pi-extended thienyl porphyrin namely 5,10,15,20 tetrakis (5-bromothiophen-2-yl) porphyrin, and its cobalt and copper complexes were synthesized in good and quantitative yields respectively.
I. Elghamry   +4 more
doaj   +1 more source

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