Synthesis and catalytic properties of an iron(III) complex supported by amine-bis(phenolate) ligand

Zhang, Yunxiao; Fu, Ling-Zhi; Zhou, Lei; Tang, Ling‐Zhi; Zhan, Shu‐Zhong

doi:10.1080/00958972.2015.1050005

Cited by 10 publications

(4 citation statements)

References 35 publications

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“…Chelation with related tetradentate tripodal ligands gives Fe14 and Fe15 , which are also active in aqueous media. , CV of Fe14 in DMF shows two features assigned as sequential one-electron reductions of the iron center, and addition of AcOH leads to an E onset that coincides with the Fe 2+ /Fe + redox wave . CPE in aqueous phosphate solution (pH 7.0) with a GC WE at E onset = −1.50 V vs Ag/AgNO 3 produced a FE H2 of 93% over 1 h (TON H2 = 141).…”

Section: Homogeneous Catalysismentioning

confidence: 98%

“…Longer CPE experiments showed that the current remains stable for at least 40 h . In contrast, complex Fe15 has an additional reductive feature in CV scans and is thought to be catalytically active as an Fe 0 species . Despite this, E onset occurs at a similar value to Fe14 .…”

Section: Homogeneous Catalysismentioning

confidence: 99%

“…CPE at E appl = −1.45 V vs Ag/AgCl with Fe15 in the same aqueous media gave a FE H2 of 96% after 2 h (TON H2 = 568). In this case the HEC was active for at least 72 h. 158 2.2.3.2. Photocatalysis.…”

Section: Manganesementioning

confidence: 99%

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Electro- and Solar-Driven Fuel Synthesis with First Row Transition Metal Complexes

et al. 2019

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The synthesis of renewable fuels from abundant water or the greenhouse gas CO 2 is a major step toward creating sustainable and scalable energy storage technologies. In the last few decades, much attention has focused on the development of nonprecious metal-based catalysts and, in more recent years, their integration in solid-state support materials and devices that operate in water. This review surveys the literature on 3d metal-based molecular catalysts and focuses on their immobilization on heterogeneous solid-state supports for electro-, photo-, and photoelectrocatalytic synthesis of fuels in aqueous media. The first sections highlight benchmark homogeneous systems using proton and CO 2 reducing 3d transition metal catalysts as well as commonly employed methods for catalyst immobilization, including a discussion of supporting materials and anchoring groups. The subsequent sections elaborate on productive associations between molecular catalysts and a wide range of substrates based on carbon, quantum dots, metal oxide surfaces, and semiconductors. The molecule–material hybrid systems are organized as “dark” cathodes, colloidal photocatalysts, and photocathodes, and their figures of merit are discussed alongside system stability and catalyst integrity. The final section extends the scope of this review to prospects and challenges in targeting catalysis beyond “classical” H 2 evolution and CO 2 reduction to C 1 products, by summarizing cases for higher-value products from N 2 reduction, C x >1 products from CO 2 utilization, and other reductive organic transformations.

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Section: Homogeneous Catalysismentioning

confidence: 98%

Section: Homogeneous Catalysismentioning

confidence: 99%

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Electro- and Solar-Driven Fuel Synthesis with First Row Transition Metal Complexes

et al. 2019

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“…In recent years, four-coordinate copper(I) complexes with two bidentate ligands (bisimine and/or bisphosphine ligands) have attracted increased interest as dopants due to the low price and consistent availability of copper metal . In order to reduce the electrostatic repulsion, the ground-state geometry of Cu(I) complexes favors a (distorted) tetrahedral arrangement of the ligands around the copper center. , Upon light excitation, a metal-to-ligand charge transfer (MLCT) transition from the 3d orbital of Cu(I) to the π*-orbital of the surrounding diimine ligand takes place. − We can modify the photophysical and electrochemical properties across a wide range due to the intrinsic structural diversity of the underlying diimine ligands. For the higher emission complexes, the use of sterically packed ligands provides a strict environment surrounding the copper center.…”

Section: Introductionmentioning

confidence: 99%

Mixed Ligand Copper(I) Complexes as Emitters Enable Higher OLED Device Performance for Energy-Harvesting Applications

Kandasamy,

Keerthi,

Jeyasekaran

2023

ACS Appl. Electron. Mater.

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OLEDs are generally used in display devices and lighting that significantly aid energy conservation. The focus of the current study was on the synthesis of four-coordinate mixed ligand copper(I) complexes containing 1,10-phenanthroline derivatives, which were produced from 1,10-phenanthroline-5,6-dione, 4nitrobenzaldehyde, thiophene-2-amine/furan-2-amine/pyrrole-2amine, and acetylacetone derivative (acacp). The [Cu-L 1−3 (acacp)]-produced complexes were evaluated using FT-IR, UV−vis, Raman, mass, molar conductance, and elemental analyses. The 1,10-phenanthroline derivative chelates with a copper(I) ion through a bidentate manner with distorted square-planar geometry. Complexes with nonelectrolyte composition are visible in the molar conductance measurements. The metal complexes mentioned above can be prepared for the production of OLED devices using the solution approach since they are soluble in organic solvents. Effective green-, yellow-, and red-emitting OLEDs are made using solution processing and emissive chemicals as the dopants. Additionally, the manufacture of OLED devices based on the copper(I) complex of L 1 demonstrated the best performance with a maximum brightness of 22,800 cd m 2 , a maximum current efficiency of 30.50 cd A 1 , and a maximum external quantum efficiency of 20.5%. The observed results suggested that the Cu(I) complex with a 1,10-phenanthroline backbone coated on the OLED device achieved good performances due to the copper complex as an emitter, inclusive of imidazole and diamine moieties and other heterocyclic cores, which increases the aromatic π-system compared with other ligand systems.

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Spectroscopic validation and biological screening of new iron(III) complexes with N, O donor ligands

et al. 2016

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Synthesis and catalytic properties of an iron(III) complex supported by amine-bis(phenolate) ligand

Cited by 10 publications

References 35 publications

Electro- and Solar-Driven Fuel Synthesis with First Row Transition Metal Complexes

Electro- and Solar-Driven Fuel Synthesis with First Row Transition Metal Complexes

Mixed Ligand Copper(I) Complexes as Emitters Enable Higher OLED Device Performance for Energy-Harvesting Applications

Spectroscopic validation and biological screening of new iron(III) complexes with N, O donor ligands

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