Synthesis and characterization of a ligand-substituted poly(amidoamine) dendrimer with external terpyridine units and its iron(II) complexes

Abstract

SUMMARY: The ligand-substituted poly(amido amine) dendrimer 2 containing terpyridine ligands located exclusively at the peripheries of the dendrimer and its iron-containing dendrimer 3 have been synthesized using modification reactions. Cyclic voltammetric studies indicate that the external iron centers on the outer surface of the dendrimer are electrochemically equivalent. The treatment of 2 with Fe 2+ ions leads to a dendrimer assembly due to the formation of iron complexes among the ligand-substituted dendrimers.

Macromolecules Containing Bipyridine and Terpyridine Metal Complexes: Towards Metallosupramolecular Polymers

“…Only one signal for the carbon atom was detected for the internal carboxylate group in the NMR spectrum. Poly(amidoamine) dendrimers with an ethylenediamine core were presented up to the third generation by Kimura et al [195] and up to the fourth generation by Abrun ƒ a and co-workers. [29±31] The fourth-generation dendrimer contains 64 bis(terpyridinyl)-ruthenium(ii) complexes and therefore a total of 128 positive charges.…”

A metallosupramolecular polymer deposited via inkjet printing for fast-switching pixelated electrochromic devices

“…Thereafter, the printed electrochromic layer was immersed in a lithium perchlorate (LiClO 4 ) aqueous solution for a few minutes to substitute the material from soluble acetate to insoluble perchlorate (ClO 4 − ). 35–38 According to the requirements of practical application, we could transfer more electrochromic material to the electrode by repeating the above process. Fig.…”

Makromoleküle mit Bipyridin- und Terpyridinkomplexen als Verknüpfungsstellen: erste Schritte auf dem Weg zu metallo-supramolekularen Polymeren

“…Nach einer Dialyse wurde u. a. NMR‐spektroskopisch charakterisiert und dabei nur ein Signal für die Kohlenstoffatome der internen Carboxylatgruppen gefunden. Poly(amidoamin)‐Dendrimere bis zur dritten und vierten Generation mit einem Ethylendiamin‐Kern wurden von Kimura et al195 bzw. Abruña et al beschrieben 29–31.…”