Results 71 to 80 of about 63,566 (303)

Photofrin II as an efficient radiosensitizing agent in an experimental tumor [PDF]

open access: yes, 2001
Background and Objective: The use of ionizing irradiation as radiation therapy (RT) for tumor treatment represents a well-established method. The use of photodynamic therapy (PDT), especially with Photofrin II, for tumor treatment is also known. Chemical
Corti, L.   +6 more
core   +1 more source

Covalent Organic Frameworks for Photocatalytic CO2 Reduction: Metal Integration Principles, Strategies and Functions

open access: yesAdvanced Functional Materials, EarlyView.
Covalent organic frameworks (COFs) with metals have been recognized as versatile platforms for photocatalytic CO2 reduction (CO2PRR). Herein, an overview of metal integration strategies for COFs is systematically summarized. Regulatory mechanisms and structure–activity relationships between metal integration and COF‐based CO2PRR are emphasized.
Jie He   +5 more
wiley   +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  

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

Exciton‐Polaritons in Nanoscale Metal‐Organic Frameworks: A Platform for the Reversible Modulation of Strong Light‐Matter Coupling via the Chemical Environment

open access: yesAdvanced Functional Materials, EarlyView.
Strong exciton‐photon coupling is achieved by integrating porphyrin ligand‐based MOF nanoparticles in optical cavities, as evidenced by pronounced polariton branch anticrossing. The porous nature of the resonator enables precise, reversible tuning via vapor pressure, unlocking unprecedented chemical‐environment controlled dynamic polaritonic platforms ...
Beatriz de Sola‐Báez   +7 more
wiley   +1 more source

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

Nano‐ and Micro‐Sized Solid Materials Used as Antiviral Agents

open access: yesAdvanced Functional Materials, EarlyView.
Due to the rise of viral infections in humans and possible viral outbreaks, the use of nano‐ or micro‐sized materials as antiviral agents is rapidly increasing. This review explores their antiviral properties against RNA and DNA viruses, either as a prevention or a treatment tool, by delving into their mechanisms of action and how to properly assess ...
Orfeas‐Evangelos Plastiras   +6 more
wiley   +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  

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

Simulation of Heme using DFT+U: a step toward accurate spin-state energetics [PDF]

open access: yes, 2007
We investigate the DFT+U approach as a viable solution to describe the low-lying states of ligated and unligated iron heme complexes. Besides their central role in organometallic chemistry, these compounds represent a paradigmatic case where LDA, GGA ...
Cococcioni, Matteo   +3 more
core   +2 more sources

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