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On the Mechano‐Chiral Effect of Vortical Flows on the Dichroic Spectra of 5‐Phenyl‐10,15,20‐tris(4‐sulfonatophenyl)porphyrin J‐Aggregates
Author(s) -
ElHachemi Zoubir,
Arteaga Oriol,
Canillas Adolf,
Crusats Joaquim,
Escudero Carlos,
Kuroda Reiko,
Harada Takunori,
Rosa Mònica,
Ribó Josep M.
Publication year - 2008
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.200800307
Subject(s) - porphyrin , j aggregate , dichroic glass , chirality (physics) , ellipsometry , spectral line , materials science , chemical physics , tris , chemistry , condensed matter physics , optics , physics , photochemistry , exciton , chiral symmetry , nanotechnology , thin film , quantum mechanics , biochemistry , quark , nambu–jona lasinio model
Phase‐modulated ellipsometry of the J‐aggregates of the title porphyrin shows that the material gives a true CD signal. This confirms that there is a real chiral transfer by mechanical forces, mediated by shear gradient flows, from the macroscopic to the electronic transition level. Dislocations in the structure of the aggregate could justify the formation of chirality at the level of the electronic transitions once the mesophases can be sculptured by hydrodynamic gradient flows.