Multiple electrochemically accessible colour states in surface-confined metal–organic monolayers: stepwise embedding of individual metal centres

Abstract

Sequential embedding of metal complexes of 4′-(pyridin-4-yl)-2,2′:6′,2′′-terpyridine to a surface-enhanced supports pre-functionalized with a templating layer results in hetero-bimetallic (Os–Fe, Co–Fe) and hetero-trimetallic (Co–Os–Fe) monolayer materials.

Reducing the resistance for the use of electrochemical impedance spectroscopy analysis in materials chemistry

“…25 This method for the determination of diffusion coefficients has been effectively applied to describe and compare the performance of different supercapacitors. 7,19,74 Particularly, this method was used to study the suitability of different geometric architectures of porous copper(II) oxide nanostructures for supercapacitor application. In this work, pseudocapacitive three-dimensional architectures (3D) of CuO electrodes were prepared through the organized assembly of one-dimensional (1D) and two-dimensional (2D) nanostructures.…”

Probing the Influence of Counter Electrode Structure on Electrochromic‐Device Operating Potentials and Performance Using Electrochemical Impedance Spectroscopy

“…SEM and Optical 3D profilometry of the ITO‐50 support is shown in Figure S8. Further physical characterization of the ITO‐50 support can be found in our previously published work [28] …”

“…Further physical characterization of the ITO-50 support can be found in our previously published work. [28] Screen-Printed-Surface Functionalization by Fe (II) 4'-(4-pyridyl)-2,2':6',2"-Terpyridine Fe (II) 4'-(4-pyridyl)-2,2':6',2"-terpyridine (Fe 4'T) complex (shown in black in Figure 1A) was synthesized according to a previously published literature procedure. [56] First, ITO-50 screen printed substrate functionalization by the templating layer (shown in blue in Figure 1A) was performed under N 2 atmosphere in an MBraun LABstar Pro Glovebox.…”

“…Due to the necessity of these components in a functioning ECD, it is vital to assess and optimize their stability and performance. While the impact of the ligand, [4] metal, [27][28] and the support [29] of the WE on the properties of ECDs have been previously investigated, the influence of the CE was not explored in detail.…”

Systematic Design of Electrochromic Energy Storage Devices Based on Metal–Organic Monolayers

“…A significant packing density of well-defined metal complexes of various terpyridine derivatives combined with an enhanced surface area-conductive support leads to vivid colors of the resulting hybrid materials . The chemistry of polypyridine and especially terpyridine derivatives is well-developed; − and these ligands are known to form stable complexes with a variety of metals in different oxidation states. , Complexes of different metals can be covalently anchored to the surface either individually or jointly using a simultaneous or sequential deposition approach. The resulting monolayers demonstrate intense redox dependent absorbance in the UV–vis region due to metal-to-ligand charge transfer (MLCT) and d–d* transitions .…”