Switchable colloids, thin-films and interphases based on metal complexes with non-innocent ligands: the case of valence tautomerism and their applications

Abstract

Nanostructuration of valence tautomeric systems as colloids, thin-films and interphases, and their applications.

Spin Crossover Nanomaterials: From Fundamental Concepts to Devices

“…Recently, more complex architectures, such as core–shell particles, multilayer films, hybrid plasmonic, and fluorescent SCO particles have been also synthesized attesting a certain degree of maturity of the field and providing scope for the development of multifunctional nanomaterials displaying synergistic effects. Let us mention also that conceptually related valence tautomeric and Jahn–Teller switch type molecule‐based nanomaterials have been also synthesized recently—raising similar fundamental questions and application ideas …”

Stimulierung eines redoxinduzierten Elektronentransfers durch Interligand‐Wasserstoffbrücken in einem Cobaltkomplex mit redoxaktivem Guanidin‐Liganden

“…Cobaltkomplexe mit redoxaktiven Liganden waren in den letzten Jahrzehnten Gegenstand intensiver Forschung. [1][2][3][4][5][6] Insbesondere einkernige Komplexe mit einem oder zwei Liganden vom Dioxolen-Typ und zweikerne Komplexe mit einem verbrückenden Te traoxolen-Liganden wurden umfassend untersucht, zum Te il auch aufgrund ihres großen Potentials als Komplexe mit redoxaktiven Liganden in der Katalyse. [7][8][9][10][11][12][13] Intermolekularer Elektronentransfer konnte in solchen Komplexen durch verschiedene Stimulanzien ausgelçst werden.…”

Use of Crown Ether Functions as Secondary Coordination Spheres for the Manipulation of Ligand–Metal Intramolecular Electron Transfer in Copper–Guanidine Complexes

“…Several applications rely on a tunable and reversible intramolecular electron transfer (IET) between the redox‐active ligand and the metal [11] . For example, variations in the number of unpaired electrons accompanied by this electron transfer could be used for the design of switchable magnetic devices, [12] and also allow the tuning of other important material properties such as phase transitions [13, 14] . In the past, examples for intramolecular ligand–metal electron transfer stimulated by physical parameters (temperature, [15–18] pressure or light irradiation [19–21] ) were reported [22] .…”

“…[11] For example, variations in the number of unpaired electrons accompanied by this electron transfer couldb eu sed for the design of switchable magnetic devices, [12] and also allow the tuning of other important materialp roperties such as phase transitions. [13,14] In the past,e xamples for intramolecular ligand-metal electron transfer stimulated by physicalp arameters (temperature, [15][16][17][18] pressure or light irradiation [19][20][21] )w erer eported. [22] Moreover, chemists found ways to trigger ligand-metalI ET by (reversible) chemicalr eactions, for example, at ar emote part of the redoxactive ligand or at the co-ligands attached to the metal.…”