Results 21 to 30 of about 9,393 (223)

Reduced Graphene Oxide-Metalloporphyrin Sensors for Human Breath Screening

Applied Sciences, 2021
The objective of this study is to validate reduced graphene oxide (RGO)-based volatile organic compounds (VOC) sensors, assembled by simple and low-cost manufacturing, for the detection of disease-related VOCs in human breath using machine learning (ML ...
Bo Mi Lee, Ameen Eetemadi, Ilias Tagkopoulos   +2 more
doaj   +1 more source

Insight into Solvent Coordination of an Iron Porphyrin Hydroxylamine Complex from Spectroscopy and DFT Calculations [PDF]

, 2018
The reduction of Fe(OEP)(NO) in the presence of substituted phenols leads to a three‐electron reduction to form Fe(OEP)(NH2OH), which has been characterized by visible spectroscopy and electron stoichiometry.
Rahman, Md. Hafizur, Ryan, Michael D.
core   +2 more sources

Humidity-Resistive Optical NO Gas Sensor Devices Based on Cobalt Tetraphenylporphyrin Dispersed in Hydrophobic Polymer Matrix

Sensors, 2020
We report on an optical nitrogen oxide (NO) gas sensor device using cobalt tetraphenylporphyrin (CoTPP) dispersed in three kinds of hydrophobic polymer film matrix (polystyrene (PSt), ethylcellulose (EC), and polycyclohexyl methacrylate (PCHMA)) to ...
Shunsuke Shiba, Kohei Yamada, Masanobu Matsuguchi   +2 more
doaj   +1 more source

Self-Assembly of Chiral Cyclohexanohemicucurbit[n]urils with Bis(Zn Porphyrin): Size, Shape, and Time-Dependent Binding

Molecules, 2022
In order to investigate the ability of bis(zinc octaethylporphyrin) (bis–ZnOEP) to discriminate cyclohexanohemicucurbit[n]urils (cycHC[n]) of different shapes and sizes, the self-assembly of barrel-shaped chiral cycHC[n] with bis–ZnOEP was studied by ...
Marko Šakarašvili, Lukas Ustrnul, Elina Suut, Jagadeesh Varma Nallaparaju, Kamini A. Mishra, Nele Konrad, Jasper Adamson, Victor Borovkov, Riina Aav   +8 more
doaj   +1 more source

Treatment with a Catalytic Superoxide Dismutase (SOD) Mimetic Improves Liver Steatosis, Insulin Sensitivity, and Inflammation in Obesity-Induced Type 2 Diabetes

Antioxidants, 2017
Oxidative stress and persistent inflammation are exaggerated through chronic over-nutrition and a sedentary lifestyle, resulting in insulin resistance.
Gina M. Coudriet, Meghan M. Delmastro-Greenwood, Dana M. Previte, Meghan L. Marré, Erin C. O’Connor, Elizabeth A. Novak, Garret Vincent, Kevin P. Mollen, Sojin Lee, H. Henry Dong, Jon D. Piganelli   +10 more
doaj   +1 more source

Quantitative Structure–Electrochemistry Relationship (QSER) Studies on Metal–Amino–Porphyrins for the Rational Design of CO₂ Reduction Catalysts

Molecules, 2023
The quantitative structure–electrochemistry relationship (QSER) method was applied to a series of transition-metal-coordinated porphyrins to relate their structural properties to their electrochemical CO2 reduction activity.
Furong Chen, Amphawan Wiriyarattanakul, Wanting Xie, Liyi Shi, Thanyada Rungrotmongkol, Rongrong Jia, Phornphimon Maitarad   +6 more
doaj   +1 more source

Modified silicas covalently bounded to 5,10,15,20-tetrakis(2-hydroxy-5-nitrophenyl)porphyrinato iron(III): synthesis, spectroscopic and EPR characterization. Catalytic studies [PDF]

, 2008
In this work we have studied cyclooctene epoxidation with PhIO, using a new iron porphyrin, 5,10,15,20-tetrakis(2-hydroxy-5-nitrophenyl)porphyrinato iron(III), supported on silica matrices via eletrostatic interaction and / or covalent bonds as catalyst.
GANDINI, Maria Elisa F., IAMAMOTO, Yassuko, MINORIN, Tatiana Stedile, NASCIMENTO, Otaciro Rangel, NERI, Cláudio R., SERRA, Osvaldo Antônio, VINHADO, Fábio S.   +6 more
core   +1 more source

Spectral features of conjugated bichromophores: porphyrins with curcumin

EPJ Web of Conferences, 2018
Conjugated bichromophores of porphyrins with natural compound curcumin were synthesized and studied by methods of spectroscopy. The fluorescence spectra of bichromophore consist of four bands covered almost a whole visible spectrum from 450 to 700 nm.
Starukhin Aleksandr, Gorski Aleksander, Pavich Tatsiana, Kniukshto Valerii   +3 more
doaj   +1 more source

Aggregation induced photodynamic therapy enhancement based on linear and nonlinear excited FRET of fluorescent organic nanoparticles [PDF]

, 2013
A binary molecule can self-assemble to form fluorescent organic nanoparticles (FONs) based on the Aggregation-Induced Emission Enhancement (AIEE) property and subsequently, presents an efficient fluorescence resonance energy transfer (FRET) to generate ...
Cheng-Chung Chang, Cheng-Hao Chien, Meng-Chieh Hsieh, Ta-Chau Chang   +3 more
core   +1 more source

Structural Aspects of Porphyrins for Functional Materials Applications

Crystals, 2017
Porphyrinic compounds comprise a diverse group of materials which have in common the presence of one or more cyclic tetrapyrroles known as porphyrins in their molecular structures.
Lawrence P. Cook, Greg Brewer, Winnie Wong-Ng   +2 more
doaj   +1 more source