Results 31 to 40 of about 11,207 (210)

Consistent force field for metalloporphyrins [PDF]

open access: yesJournal of the Serbian Chemical Society, 2010
Molecular mechanics (MM) calculations to analyze the puckering of metalloporphyrins isolated and adsorbed on a graphite layer (0001) as a function of metal ion size and the peripheral substitution are presented.
LJUBICA ANDJELKOVIĆ   +5 more
doaj  

An Exploration of the Metal Dependent Selectivity of a Metalloporphyrins Coated Quartz Microbalances Array

open access: yesSensors, 2016
Several studies in the last two decades have demonstrated that metalloporphyrins coated quartz microbalances can be fruitfully used in many diverse applications, spanning from medical diagnosis to environmental control.
Alexandro Catini   +5 more
doaj   +1 more source

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

Equilibrium, photophysical and photochemical examination of anionic lanthanum(III) mono- and bisporphyrins: the effects of the out-of-plane structure [PDF]

open access: yes, 2012
Lanthanum(III) ion forms kinetically labile complexes with the 5,10,15,20-tetrakis(4-sulfonatophenyl)porphyrin anion (H2TSPP4-), the compositions and formation constants of which significantly depend on the presence of potential axial ligands (at 0.01 M)
Eller, Gábor   +2 more
core   +1 more source

Unravelling the structural‐property relations of porphyrinoids with respect to photo‐ and electro‐chemical activities

open access: yesElectrochemical Science Advances, 2023
Porphyrins have multiple roles in living and nonliving systems because of their exceptional tunable chemical and physical properties. They are interesting macrocyclic compounds that could be modified in a number of ways.
Gita Singh, Sudeshna Chandra
doaj   +1 more source

Near-IR Phosphorescence of Iridium(III) Corroles at Ambient Temperature [PDF]

open access: yes, 2010
The photophysical properties of Ir(III) corroles differ from those of phosphorescent porphyrin complexes, cyclometalated and polyimine Ir(III) compounds, and other luminescent metallocorroles.
Durrell, Alec C.   +4 more
core   +2 more sources

How does aromaticity rule the thermodynamic stability of hydroporphyrins? [PDF]

open access: yes, 2011
Several measures of aromaticity including energetic, magnetic, and electron density criteria are employed to show how aromatic stabilization can explain the stability sequence of hydroporphyrins, ranging from porphin to octahydroporphin, and their ...
Bultinck, Patrick   +5 more
core   +2 more sources

Seeing smells: development of an optoelectronic nose

open access: yesQuímica Nova, 2007
The development of an array of chemically-responsive dyes on a porous membrane and in its use as a general sensor for odors and volatile organic compounds (VOCs) is reviewed. These colorimetric sensor arrays (CSA) act as an "optoelectronic nose" by using
Kenneth S. Suslick   +11 more
doaj   +1 more source

Single-Walled Carbon Nanotube–Metalloporphyrin Chemiresistive Gas Sensor Arrays for Volatile Organic Compounds [PDF]

open access: yes, 2015
National Science Foundation (U.S.) (DMR-1410718)National Science Foundation (U.S.) (1122374)Massachusetts Institute of Technology. Institute for Soldier NanotechnologiesUnited States.
Liu, Sophie   +2 more
core   +2 more sources

Carbene Transfer Reactions Catalysed by Dyes of the Metalloporphyrin Group

open access: yesMolecules, 2018
Carbene transfer reactions are very important transformations in organic synthesis, allowing the generation of structurally challenging products by catalysed cyclopropanation, cyclopropenation, carbene C-H, N-H, O-H, S-H, and Si-H insertion, and ...
Mário M. Q. Simões   +8 more
doaj   +1 more source

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