Results 101 to 110 of about 103,245 (367)
Synthesis and properties amphiphilic meso-arylsubstituted porphyrins
Тонкие 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
Scientific 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
Advanced Materials, EarlyView.This review explores how in situ and operando spectroscopic techniques reveal the real‐time behavior of reticular materials, including MOFs and COFs. These methods track material formation and functionalization, structural changes, defect formation, dynamic responses to external triggers, and catalytic processes.
Bettina Baumgartner +4 more
wiley +1 more source
Electrically addressing the spin of a magnetic porphyrin through covalently connected graphene electrodes [PDF]
, 2019 We report on the fabrication and transport characterization of atomically-precise single molecule devices consisting of a magnetic porphyrin covalently wired by graphene nanoribbon electrodes. The tip of a scanning tunneling microscope was utilized to contact the end of a GNR-porphyrin-GNR hybrid system and create a molecular bridge between tip and ...
arxiv +1 more source
Synthesis of Asymmetrical Porphyrins Substituted in the meso-Position from Dipyrrolomethanes
Molecules, 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
Advanced Materials, EarlyView.Hierarchically porous covalent organic frameworks (hCOFs) are constructed using a solvothermal template‐induced synthetic strategy. Commercially available zinc oxide nanoparticles are employed as hard template enabling an increase in total pore volume in a series of COFs.
Fabian Heck +6 more
wiley +1 more source
When do tripdoublet states fluoresce? A theoretical study of copper(II) porphyrin [PDF]
arXiv, 2023 Open-shell molecules rarely fluoresce, due to their typically faster non-radiative relaxation rates compared to closed-shell ones. Even rarer is the fluorescence from states that have two more unpaired electrons than the open-shell ground state, for example tripdoublet states (a triplet excitation antiferromagnetically coupled to a doublet state).
arxiv
Porphyrias associated with malignant tumors: Results of treatment with ionizing irradiation [PDF]
, 2001 Background: Porphyrin metabolism disorders, known as porphyria, represent inherited or acquired diseases. The development of porphyria due to light sensibility occurs especially with exposure to wavelengths in the range of 300-700 nm.
Dühmke, Eckhart +4 more
core +1 more source
Porphyrins as Theranostic Agents from Prehistoric to Modern Times
Theranostics, 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
Responsive Molecules for Organic Neuromorphic Devices: Harnessing Memory Diversification
Advanced Materials, EarlyView.Responsive molecules are essential for organic in‐sensor computing devices. This Review highlights recent advances in thedesign, synthesis, and incorporation of electrically, optically, and magnetically responsive molecules in multifunctional synaptic perception devices endowedwith both nonvolatile and volatile memory diversification. By exploiting the
Yusheng Chen +4 more
wiley +1 more source