Results 51 to 60 of about 6,458 (220)

Synthesis and Characterization of Low Valent Metalloporphyrins [PDF]

, 2015
Metalloporphyrins and metalloporphinones have been seen in a number of enzymes and involved in nitrogen metabolism, photosynthesis, and methanogenesis. The reduction of metalloporphyrins and metalloporphinones are achievable, but the site of reduction in
Kundakarla, Nagabhushanam
core  

Non‐Covalent PL, CD, and CPL Activation of Linear Aromatic Oligomers within Axially Chiral Aromatic Capsules

Angewandte Chemie, Volume 138, Issue 42, 12 October 2026.
Linear aromatic oligomers display intense photoluminescence (PL), circular dichroism (CD), and circularly polarized luminescence (CPL) properties upon non‐covalent encapsulation by axially‐chiral aromatic capsules under ambient aqueous conditions.
Yoshihisa Hashimoto, Yuya Tanaka, Daiki Tauchi, Masashi Hasegawa, Michito Yoshizawa   +4 more
wiley   +2 more sources

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

Coordination Chemistry of Boron Subphthalocyanine With BINOL Derivatives: Unexpected Oxidation to Oxa[4]Helicene and Properties of the Resulting Axially Coordinated Complexes Containing Oxa[4]Helicene and/or BINOL Derivatives

Chemistry – A European Journal, EarlyView.
Treatment of BINOL with a boron subphthalocyanine derivative resulted in the formation of a complex coordinated to an oxa[4]helicene derivative, which is generated via a ring‐closure reaction of BINOL. In contrast, treatment of the monomethyl ether of 1,1′‐bi‐2‐naphthol (BINOL) afforded the expected axially coordinated complex.
Shafikul Islam, Kazuyuki Asahi, Hiroyuki Nishikawa, Daiki Tauchi, Masashi Hasegawa, Ken‐ichi Sugiura   +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

Exploring the Boundaries of Aromaticity in Complex Structures and Excited States Through Computational Analysis

Chemistry – A European Journal, EarlyView.
Understanding aromaticity has evolved from benzene‐centric concepts to a broad multidimensional framework spanning organic, inorganic, and excited‐state systems. This review highlights ambiguities between magnetic, electronic, geometric, and energetic descriptors, emphasizing the need for unified, multi‐criteria approaches.
Sílvia Escayola, Miquel Solà, Albert Poater   +2 more
wiley   +1 more source

METALLOPORPHYRINS

Journal of Biological Chemistry, 1940
W. Mansfield Clark, Marie E. Perkins
  +6 more sources

Using Displacement‐Assisted Desorption to Identify Reactive Intermediates: Ring‐Fused Porphyrins on Cu(111)

Chemistry – A European Journal, EarlyView.
We propose a novel displacement‐assisted approach for temperature‐programmed desorption (TPD), allowing for the detection of reactive intermediates of on‐surface reactions. We demonstrate the approach by investigating the temperature‐dependent ring fusion reactions (cyclodehydrogenations) of tetraphenylporphyrin on Cu(111), revealing the quantitative ...
Simon Steinbach, Alisson Ceccatto, Maximilian Muth, Hans‐Peter Steinrück, Ole Lytken   +4 more
wiley   +1 more source

Spectroelectrochemical Studies of Metalloporphyrins in Room Temperature Ionic Liquid [PDF]

, 2010
The oxidation/reduction reactions of porphyrins and metalloporphyrins play an important role in medicinal, industrial and biochemical reactions. Metalloporphyrins are particularly useful as potential catalysts for a variety of processes including ...
Soo Hoo, Yong
core