title: Hydrodynamic Effects in Soft-matter Self-assembly: The Case of J-Aggregates of Amphiphilic Porphyrins.
abstract: Chiral J-aggregates of achiral amphiphilic porphyrins (4-sulfonatophenyl and aryl meso-substituted porphyrins) show several effects under the hydrodynamic forces of common stirring. These effects can be classified as pure mechanic (e. g. elasticity, plasticity and breaking of the self-assembly non-covalent bonding) and chemically selective as detected in the formation/growth of the nanoparticles. Diastereoselective, enantioselective and, depending on the sign of chiral shear forces, even enantiospecific selections have been described. Some types of these effects have been reported in other type of J-aggregates. Reversible and irreversible structural effects have been studied by atomic force imaging. The determination of the optical polarization properties (linear and circular) of their solutions is best done using Mueller matrix polarimetry methods.
authors.affiliation: Department of Inorganic and Organic Chemistry, University of Barcelona (UB), c. Martí I Franques 1, 08-, Barcelona, Catalonia, Spain.|Institute of Cosmos Sciences, IEEC-UB, c. Martí I Franques 1, 08-, Barcelona, Catalonia, Spain.
authors.forename: Josep M
authors.initials: JM
authors.lastname: Ribo
authors.affiliation: Department of Inorganic and Organic Chemistry, University of Barcelona (UB), c. Martí I Franques 1, 08-, Barcelona, Catalonia, Spain.|Institute of Cosmos Sciences, IEEC-UB, c. Martí I Franques 1, 08-, Barcelona, Catalonia, Spain.
authors.forename: Zoubir
authors.initials: Z
authors.lastname: El-Hachemi
authors.affiliation: Department of Applied Physics, University of Barcelona (UB), c. Martí I Franques 1, 08-, Barcelona, Catalonia, Spain.|FEMAN Group, Institute of Nanoscience and Nanotechnology (IN2UB), c. Martí I Franques 1, 08-, Barcelona, Catalonia, Spain.
authors.forename: Oriol
authors.initials: O
authors.lastname: Arteaga
authors.affiliation: Department of Applied Physics, University of Barcelona (UB), c. Martí I Franques 1, 08-, Barcelona, Catalonia, Spain.|FEMAN Group, Institute of Nanoscience and Nanotechnology (IN2UB), c. Martí I Franques 1, 08-, Barcelona, Catalonia, Spain.
authors.forename: Adolf
authors.initials: A
authors.lastname: Canillas
authors.affiliation: Department of Inorganic and Organic Chemistry, University of Barcelona (UB), c. Martí I Franques 1, 08-, Barcelona, Catalonia, Spain.|Institute of Cosmos Sciences, IEEC-UB, c. Martí I Franques 1, 08-, Barcelona, Catalonia, Spain.
authors.forename: Joaquim
authors.initials: J
authors.lastname: Crusats
keywords: Aggregation; Chirality; Nanoparticles; Supramolecular chemistry