On the Mechano-Chiral Effect of Vortical Flows on the Dichroic Spectra of 5-Phenyl-10,15,20-tris(4-sulfonatophenyl)porphyrin J-Aggregates

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. Les mesures mitjançant el⋅lipsometria de fase modulada indiquen que els J‐agregats de la porfirina del títol mostren senyals de DC vers. Aquest resultat confirma que els gradients de flux de cisalla, originats per forces mecàniques, poden induir la transferència de quiralitat des de nivell macroscòpic al de transició electrònica. Aquesta formació de quiralitat a nivell de transicions electròniques podria ser deguda a les dislocacions generades pels gradients hidrodinàmics del flux, els quals podrien esculpir les mesofases de J‐agregat. Chiral sculpting: Phase‐modulated ellipsometry of the J‐aggregates of the title porphyrin shows that the material gives a true CD signal, which confirms that there is a real chiral transfer by mechanical forces, mediated by shear gradient flows, from the macroscopic to the electronic transition level (see picture). 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.