A new molecular electro-catalyst based on a triazenido–cobalt complex for generating hydrogen from both acetic acid and water

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

doi:10.1016/j.catcom.2015.07.010

Cited by 15 publications

(1 citation statement)

References 29 publications

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“…As a result, we started working on developing novel Cu(I) complex emitter materials with various heterocyclic structural cores for the production and performance studies of the OLED device (Figure ). − …”

Section: Results and Discussionmentioning

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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Section: Results and Discussionmentioning

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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Synthesis, characterization and electrocatalytic performance of a dinuclear triazenidosilver(I) complex for hydrogen production

Xue

Zhan

2017

Applied Organom Chemis

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Our group has developed a series of molecular electrocatalysts for hydrogen generation based on triazenido–metal complexes (cobalt, copper, etc.). In this paper, we first present the electrocatalytic performance of a new dinuclear silver complex, [Ag2(L)2], formed by the reaction of the triazenido ligand 1‐[(2‐carboxymethyl)benzene]‐3‐[(2‐methoxy)benzene]triazene (HL) with AgNO3. At room temperature, the silver complex shows photoluminescence at 653 nm. The electrocatalytic systems based on this silver complex can afford 106.57 and 1536.36 moles of hydrogen per mole of catalyst per hour from acetic acid at an overpotential (OP) of 991.6 mV and from a neutral aqueous buffer (pH = 7.0) at an OP of 837.6 mV, respectively. Electrochemical investigations show that both silver ion and triazenido ligand play a role in determining the catalytic activities of the electrocatalytic system.

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Electrocatalytic Hydrogen Production with a Molecular Cobalt Complex in Aqueous Solution

Wilken

Siewert

2020

ChemElectroChem

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Herein, we present the synthesis of a cobalt complex with a pentadentate ligand platform and its application in the electrochemical hydrogen evolution reaction (LCF3=2,6‐bis(methoxybis(4‐trifluormethyl‐1H‐imidazol‐2‐yl)methyl)pyridine). The complex is active in neutral to acidic solvent mixtures containing 50 % water. Electronic tuning in the ligand backbone, that is introduction of electron‐withdrawing CF3‐groups, shifts the onset potential of the catalytic wave to less negative potentials. NMR and UV/Vis studies indicate that the CoIII complex is deprotonated twice in the ligand backbone under neutral conditions. Reduction is accompanied by protonation, as indicated by pH‐dependent CV measurements, and the CoI state initiates catalysis. The result suggests that the pentadentate ligand is an ideal platform for cobalt catalysts in the oxidative and reductive water splitting reaction.

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A new molecular electro-catalyst based on a triazenido–cobalt complex for generating hydrogen from both acetic acid and water

Cited by 15 publications

References 29 publications

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

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

Synthesis, characterization and electrocatalytic performance of a dinuclear triazenidosilver(I) complex for hydrogen production

Electrocatalytic Hydrogen Production with a Molecular Cobalt Complex in Aqueous Solution

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