Results 61 to 70 of about 11,207 (210)

Resonance polarization and phase-mismatched CARS of pheophytin b excited in the Qy band [PDF]

, 1993
Resonance polarization and phase-mismatched coherent anti-Stokes Raman scattering (CARS) measurements were performed on pheophytin b dissolved in acetone excited in the Qy absorption band, where strong broad fluorescence makes spontaneous Raman ...
de Boeij, W.P., Greve, Jan, Lucassen, G.W., Lucassen, Gerald, Otto, Cornelis   +4 more
core   +10 more sources

Asymmetric Electrolytes Govern Tetrahydroxozincate Dynamics for Stable Alkaline Zinc Batteries

Angewandte Chemie, Volume 138, Issue 12, 16 March 2026.
This research tackles the limitations of alkaline zinc batteries by designing a series of metalloporphyrin molecules (Co‐4N, Co‐3N‐O, Co‐3N‐S) as electrolyte additives. The asymmetric structures, particularly Co‐3N‐O, accelerate the Zn(OH)42− decomposition via a modulated metal center and control Zn2+ transport through carboxyl groups.
Xianhong Chen, Yang Wang, Jiaxiong Zhu, Chunyi Zhi, Wai‐Yeung Wong   +4 more
wiley   +2 more sources

Formation, Photophysics, Photochemistry and Quantum Chemistry of the Out-of-Plane Metalloporphyrins

Hungarian Journal of Industry and Chemistry, 2017
Among the complexes of porphyrins, special attention has been paid to those possessing out-of-plane (OOP) structures, for the formation of which the size, as well as the coordinative character of the metal center are responsible.
Valicsek Zsolt, Kiss Melitta P., Fodor Melinda A., Imran Muhammad, Horváth Ottó   +4 more
doaj   +1 more source

Active Site Determination of Heterogenized Molecular Electrocatalysts

Advanced Energy Materials, EarlyView.
Here, we develop a methodology to examine the active site availability of immobilized transition‐metal molecular complexes via cyclic voltammetry. By using varying loadings of the molecular complex FeTPP physically immobilized onto Vulcan Carbon, we show the influences of FeTPP/VC ratios on the total number of active sites.
Elena Antoniono, Shyam Kishore Kumar, Monique van der Veen, Thomas Burdyny   +3 more
wiley   +1 more source

Biomimetic Conversion of Glucose to Organic Acid Facilitated by Metalloporphyrin under Mild Conditions

BioResources, 2016
Biomimetic catalytic conversion of carbohydrates to low-molecular weight (LWM) organic acids was investigated in the presence of sulfonated metalloporphyrins (MTSPP, M = Fe, Mn, Co, Cu), with dioxygen as the oxidant.
Qiang Liu, Xiaohui Bai, Guixiang Feng, Ze Tan, Qing Jiang, Cancheng Guo   +5 more
doaj   +1 more source

Fiber‐type soft bioelectronics for wearable and implantable sensing and therapy

BMEMat, EarlyView.
Fiber‐type soft bioelectronics are emerging as versatile platforms for wearable and implantable health monitoring and therapeutic applications. These bioelectronics use organic and inorganic matrices combined with advanced fillers, which feature high conductivity, electrochemical sensitivity, softness, and biocompatibility.
Haneul Kim, Hak Yong Kim, Ja Hoon Koo, Gi Doo Cha, Dae‐Hyeong Kim, Hye Jin Kim   +5 more
wiley   +1 more source

Heterogeneous catalysis with encapsulated haem and other synthetic porphyrins: Harnessing the power of porphyrins for oxidation reactions

Open Chemistry, 2018
Encapsulated metalloporphyrins have been widely studied for their use as efficient heterogeneous catalysts, inspired by the known catalytic activity of porphyrins in haemoproteins.
Dare Nicola A., Egan Timothy J.
doaj   +1 more source

Photocatalytic Degradation of Methyl Orange over Metalloporphyrins Supported on TiO2 Degussa P25

Molecules, 2012
The photocatalytic activity of meso-tetraphenylporphyrins with different metal centers (Fe, Co, Mn and Cu) adsorbed on TiO2 (Degussa P25) surface has been investigated by carrying out the photodegradation of methyl orange (MO) under visible and ...
Xing-Jiao Huang, Hong-Bing Ji, Xian-Tai Zhou   +2 more
doaj   +1 more source

Research Progress of Polyoxometalate‐Integrated Frameworks: Syntheses, Properties, and Applications

ChemistryEurope, EarlyView.
This review systematically summarizes the integration of polyoxometalates with covalent organic frameworks, metal‐organic frameworks, hydrogen‐bonded organic frameworks, and emerging porous hosts. It highlights synergistic effects, synthesis strategies, and applications in catalysis, energy storage, sensing, and biomedicine, while addressing current ...
De‐Yin Wang, Zhang‐Di Liu, Rui Xing, Zi‐Hao Wei, Zaixiang Zhang, Yang Yang, Jin Zhu   +6 more
wiley   +1 more source

Mimicking The Photosynthetic Special Pair With Aluminum(III) Porphyrin Homodimer – Fullerene (C60) Supramolecular Assemblies Capable of Long‐Lived Charge Separation

Chemistry – A European Journal, EarlyView.
The axial‐bonding of aluminum(III) porphyrins was used to create two covalently linked special‐pair mimics to probe charge‐transfer between a porphyrin dimer and a C60 unit for artificial photosynthesis. Although excitonic coupling between the porphyrins is weak, incorporation of a second porphyrin markedly increases both the yield and lifetime of the ...
Stefan Charon, Jatan K. Sharma, Niloofar Zarrabi, Peyton Ellis, Paul A. Karr, Art van der Est, Francis D'Souza, Prashanth K. Poddutoori   +7 more
wiley   +1 more source