1450641-12-9Relevant academic research and scientific papers
Atropisomeric chiral probes to study the supramolecular organization in porphyrin self-assemblies
Chappaz-Gillot, Cyril,Canard, Gabriel,Andreoli, Federico,Vanthuyne, Nicolas,Giorgi, Michel,Naubron, Jean-Valere,Monnier, Valerie,Rosas, Roselyne,Roussel, Christian,Balaban, Teodor Silviu
, p. 6526 - 6536 (2012)
A noncatalysed nucleophilic aromatic substitution was used to prepare the (bacterio)chlorophyll mimics 2-Zn, 3-Zn, 4-Zn and 5-Zn. The localisation of the two recognition groups on the same side of the porphyrin macrocycles in 2-Zn, 4-Zn and 5-Zn produces, through metal-ligand interactions, oligomers that display both H-and J-type aggregates. These supramolecular architectures were confirmed by the introduction of optically pure atropisomers in 5-Zn, which produces chiral aggregates. The UV/Vis and electronic circular dichroism spectra of all aggregates are used to propose an excitonic splitting mode that would correspond to this dual type of chromophoric self-assembly.
