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Journal articles
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.
https://hal-univ-rennes1.archives-ouvertes.fr/hal-01744292
Contributor : Laurent Jonchère <>
Submitted on : Tuesday, May 29, 2018 - 10:40:12 AM
Last modification on : Tuesday, January 12, 2021 - 4:48:49 PM
Long-term archiving on: : Thursday, August 30, 2018 - 1:13:40 PM
Contributor : Laurent Jonchère <>
Submitted on : Tuesday, May 29, 2018 - 10:40:12 AM
Last modification on : Tuesday, January 12, 2021 - 4:48:49 PM
Long-term archiving on: : Thursday, August 30, 2018 - 1:13:40 PM