A systematic approach to the synthesis of σ-organometallophthalocyanines is described. Structurally characterized σ-organoPcM complexes are presented, including the first PcCr-aryl, PcCr-alkynyl, and PcCr-Wittig complexes - representing the first examples of these classes of complexes for any metallophthalocyanine - and the first PcCr-alkyl complexes, which span three chromium and two Pc-ring oxidation states. This represents a rational marriage of the broad organometallic and phthalocyanine fields, opening the door for the exploration of this classical, stable, redox-active macrocycle as an ancillary ligand in metal-carbon chemistry.
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http://dx.doi.org/10.1039/c7cc08781k | DOI Listing |
Chem Asian J
January 2025
Vijayanagara Sri Krishnadevaraya University Bellary, Chemistry, Vinayakanagar, Ballari, INDIA.
Hydrogen energy is widely regarded as one of the cleanest forms of green energy due to its bio-friendly nature. One of the major issues is related to high production cost, which can be overcome by designing of effective catalysts . In this study, we report the synthesis of an eco-friendly, affordable, and highly redox-active tetra-imidazole functionalized cobalt phthalocyanine (TImCoPc) through a straightforward method.
View Article and Find Full Text PDFChemSusChem
October 2024
Guangdong Engineering Technology Research Center of Efficient Green Energy and Environment Protection Materials, School of Electronic Science and Engineering (School of Microelectronics), South China Normal University, Foshan, 528225, China.
The construction of supercapacitor electrode materials with exceptional performance is crucial to the commercialisation of flexible supercapacitors. Here, a novel in-situ precipitation technique was applied for constructing iron(II)-phthalocyanine (FePc) based nanocomposite as the electrode material in quasi-solid-state flexible supercapacitors. The highly redox-active FePc nanostructures were grown in the multi-walled-CNTs (MWCNTs) networks, which shows convenient electron/electrolyte ion transport pathways along with outstanding structural stability, leading to high energy storage and long cycling life.
View Article and Find Full Text PDFChem Sci
July 2024
Department of Chemistry, University of Illinois Urbana-Champaign 600 S. Matthews Ave. Urbana IL 61801 USA
Improving the stability of platinum-group-metal-free (PGM-free) catalysts is a critical roadblock to the development of economically feasible energy storage and conversion technologies. Fe-N-C catalysts, the most promising class of PGM-free catalysts, suffer from rapid degradation. The generation of reactive oxygen species (ROS) during the oxygen reduction reaction (ORR) has been proposed as a central cause of this loss of activity.
View Article and Find Full Text PDFJ Phys Chem Lett
May 2024
Innovation Center for Chemical Science, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China.
Electrochemical CO reduction (COR) to feedstocks competes with the hydrogen evolution reaction (HER). Cobalt phthalocyanine (CoPc) immobilized onto carbon driven by π-π interaction represents a classical type of heterogeneous molecular catalyst for COR. However, the impacts of π conjugation on the electrocatalysis have not been clarified.
View Article and Find Full Text PDFTurk J Chem
May 2023
Department of Chemistry, Gebze Technical University, Kocaeli, Turkiye.
In this study, viologen-tetrasubstituted Zn(II) phthalocyanines ( and ) were designed and synthesized to achieve the tunable optical features via redox-active viologen groups. Several parameters relevant to the evaluation of the tunable optical features have been investigated: UV-Vis, cyclic voltammetry (CV), EPR, square wave voltammetry (SWV), and theoretical analyses. The results showed that upon reductions and oxidations of viologen groups either chemically or electrochemically, the optical features of and change drastically with switchable processes.
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