trans to cis photo-isomerization in merocyanine dysprosium and yttrium complexes - Archive ouverte HAL Access content directly
Journal Articles Dalton Transactions Year : 2018

trans to cis photo-isomerization in merocyanine dysprosium and yttrium complexes

Abstract

We report the synthesis of two lanthanide complexes including a chelating merocyanine (MC) ligand obtained from the reaction of a bis(pyridinemethyl)amine substituted spiropyran with yttrium(iii) or dysprosium(iii) triflate salts, whose structures were confirmed both in the solid state and in solution by single crystal X-ray diffraction studies and NMR investigations. The obtained merocyanine metal complexes can reversibly undergo a photo-triggered transformation consisting of a partial isomerization of the trans-merocyanine ligand to its cis isomer (cis-MC) providing complexes in which the metal-phenolate bond is retained. SQUID magnetometry experiments in combination with ab initio calculations were used to evidence and rationalize the single-molecule magnet behavior of the dysprosium complex and to probe the changes in the dysprosium ion local environment upon photo-isomerization.
Fichier principal
Vignette du fichier
Trans to cis photo-isomerization_accepted manuscript.pdf (1.47 Mo) Télécharger le fichier
Trans to cis photo-isomerization_supplementary data.pdf (855.84 Ko) Télécharger le fichier
Origin : Files produced by the author(s)

Dates and versions

hal-01744292 , version 1 (29-05-2018)

Identifiers

Cite

Pramila Selvanathan, Vincent Dorcet, Thierry Roisnel, Kevin Bernot, Gang Huang, et al.. trans to cis photo-isomerization in merocyanine dysprosium and yttrium complexes. Dalton Transactions, 2018, 47 (12), pp.4139-4148. ⟨10.1039/c8dt00299a⟩. ⟨hal-01744292⟩
104 View
196 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More