Results 11 to 20 of about 9,317 (210)

Ultrasensitive Electrochemical Detection of Butylated Hydroxy Anisole via Metalloporphyrin Covalent Organic Frameworks Possessing Variable Catalytic Active Sites

Biosensors, 2022
Three novel two-dimensional metalloporphyrin COFs (MPor−COF−366, M = Fe, Mn, Cu) were fabricated by changing the metal atoms in the center of the porphyrin framework.
Huacong Chu, Xin Sun, Xiaoqian Zha, Shifa Ullah Khan, Yang Wang   +4 more
doaj   +1 more source

Ascorbate-dependent and ascorbate-independent Mn porphyrin cytotoxicity: anticancer activity of Mn porphyrin-based SOD mimics through ascorbate-dependent and -independent routes

Redox Report, 2021
Objective The aim of this study was to investigate how modifications at the periphery of the porphyrin ring affect the anticancer activity of Mn porphyrins (MnPs)-based SOD mimics. Methods Six compounds: MnTE-2-PyP with a short ethyl chain on the pyridyl
Bader Hasan, Artak Tovmasyan, Ines Batinic-Haberle, Ludmil Benov   +3 more
doaj   +1 more source

Heme, Heme Oxygenase-1, Statins, and SARS-CoV-2

Antioxidants, 2023
Heme, a metalloporphyrin, or more specifically, a tetrapyrrole containing ferrous iron, is an ancient molecule [...]
David K. Stevenson, Hendrik J. Vreman, Ronald J. Wong   +2 more
doaj   +1 more source

A greener tetraphenylporphyrin synthesis and metallation: an undergraduate teaching experiment

Green Chemistry Letters and Reviews, 2023
While porphyrin-related syntheses have become classic experiments in the undergraduate curriculum, traditional syntheses of the free-base meso-tetraphenylporphyrin (H2TPP) and its metallated derivatives can be energy-intensive, use hazardous solvents ...
Matthew A. Nitka, Katarina E. Zerbee, Julianne M. Dee, Matthew A. Cranswick, Edward P. Zovinka, John R. De Backere   +5 more
doaj   +1 more source

A Novel Nanocomposite of Zn(II)-Protoporphyrin-Chitosan-Multi Walled Carbon Nanotubes and the Application to Caffeic Acid Sensing

Nanomaterials, 2022
Caffeic acid is an antioxidant that has been widely been related to the health benefits of people in recent years. In this paper, the amino side chains of chitosan (CS) were modified with protoporphyrin IX by amide cross-linking, and then Zn ions were ...
Bingkai Han, Xin Wen, Jinneng Wang, Yingrui Sun   +3 more
doaj   +1 more source

Asymptomatic Diagnosis of Huanglongbing Disease Using Metalloporphyrin Functionalized Single-Walled Carbon Nanotubes Sensor Arrays

Frontiers in Chemistry, 2020
Porphyrins, with or without metal ions (MPs), have been explored and applied in optical and electrochemical sensor fields owing to their special physicochemical properties.
Hui Wang, Hui Wang, Hui Wang, Hui Wang, Pankaj Ramnani, Tung Pham, Claudia Chaves Villarreal, Xuejun Yu, Gang Liu, Ashok Mulchandani   +9 more
doaj   +1 more source

Magnetic Nanoparticles with Dual Surface Functions—Efficient Carriers for Metalloporphyrin-Catalyzed Drug Metabolite Synthesis in Batch and Continuous-Flow Reactors

Nanomaterials, 2020
The dual functionalization of magnetic nanoparticles with inert (methyl) and reactive (aminopropyl) groups enables efficient immobilization of synthetic metalloporphyrins (such as 5,10,15,20-tetrakis(2,3,4,5,6-pentafluorophenyl)iron(II) porphyrin and 5 ...
Diána Balogh-Weiser, Balázs Decsi, Réka Krammer, Gergő Dargó, Ferenc Ender, János Mizsei, Róbert Berkecz, Benjámin Gyarmati, András Szilágyi, Róbert Tőtős, Csaba Paizs, László Poppe, György T. Balogh   +12 more
doaj   +1 more source

Gallium (III)-metalloporphyrin grafted magnetite nanoparticles for fluoride removal from aqueous solutions [PDF]

, 2017
Fluoride is a critical micronutrient for human health and is usually ingested through food and drinking water. This technique has done in monitoring the concentration of fluoride in water complications at mining operation that it effects on the ...
Asgari, Behnoosh, Bowen, James
core   +1 more source

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

Theoretical Study on Highly Active Bifunctional Metalloporphyrin Catalysts for the Coupling Reaction of Epoxides with Carbon Dioxide [PDF]

, 2016
Highly active bifunctional metalloporphyrin catalysts were developed for the coupling reaction of epoxides with CO2 to produce cyclic carbonates. The bifunctional catalysts have both quaternary ammonium halide groups and a metal center.
Ahmadi, Aida, Becke, Castro-Gómez, Chen, Chen, Cokoja, Cokoja, Comerford, D'Elia, Darensbourg, Ema, Ema, Ema, Foltran, Jin, Kielland, Kruper, Lee, Li, Li, Liu, Ma, Maeda, Maeda, Maeda, Martín, Paddock, Qin, Reed, Reed, Rocha, Stewart, Sun, Tlili, Tomasi, Tsuji, Wang, Wang, Wang, Whiteoak, Whiteoak   +41 more
core   +1 more source