Issue 40, 2018

Stereocontrolled self-assembly and photochromic transformation of lanthanide supramolecular helicates

Abstract

Stereocontrolled self-assembly of a dinuclear triple-stranded europium helicate (Eu2L3) based on DTE-functionalized ligands has been achieved via the chiral-induction strategy. The point-chirality of the ligands is transferred to give either Δ or Λ metal-centers and hence leads to the overall P or M helical senses. CD spectroscopy and NMR enantiomeric differentiation experiments have confirmed the formation of enantiomers. Moreover, the helicates in solution feature reversible photocyclization and cycloreversion, offering an opportunity to develop as chiroptical switches.

Graphical abstract: Stereocontrolled self-assembly and photochromic transformation of lanthanide supramolecular helicates

Supplementary files

Article information

Article type
Paper
Submitted
05 mai 2018
Accepted
20 juin 2018
First published
20 juin 2018

Dalton Trans., 2018,47, 14204-14210

Stereocontrolled self-assembly and photochromic transformation of lanthanide supramolecular helicates

L. Cai, L. Yan, S. Li, L. Zhou and Q. Sun, Dalton Trans., 2018, 47, 14204 DOI: 10.1039/C8DT01808A

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