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Supramolecular Architectures from Bent‐Core Dendritic Molecules
Authors:Dr. Miguel Cano  Dr. Antoni Sánchez‐Ferrer  Prof. Dr. José Luis Serrano  Dr. Nélida Gimeno  Prof. Dr.  M. Blanca Ros
Affiliation:1. Instituto de Ciencia de Materiales de Aragón, Departamento de Química Orgánica. Facultad de Ciencias, Universidad de Zaragoza‐CSIC, Campus San Francisco. 50009‐Zaragoza (Spain);2. ETH Zurich, Department of Health Sciences and Technology, IFNH, Schmelzbergstrasse 9, LFO, E29, 8092 Zurich (Switzerland);3. Instituto de Nanociencia de Aragón, Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Zaragoza, Campus San Francisco, 50009‐Zaragoza (Spain)
Abstract:Control of the self‐assembly of small molecules to generate architectures with diverse shapes and dimensions is a challenging research field. We report unprecedented results on the ability of ionic, bent dendritic molecules to aggregate in water. A range of analytical techniques (TEM, SEM, SAED, and XRD) provide evidence of the formation of rods, spheres, fibers, helical ribbons, or tubules from achiral molecules. The compact packing of the bent‐core structures, which promotes the bent‐core mesophases, also occurs in the presence of a poor solvent to provide products ranging from single objects to supramolecular gels. The subtle balance of molecule/solvent interactions and appropriate molecular designs also allows the transfer of molecular conformational chirality to morphological chirality in the overall superstructure. Functional motifs and controlled morphologies can be combined, thereby opening up new prospects for the generation of nanostructured materials through a bottom‐up strategy.
Keywords:chirality transfer  ionic dendrimers  liquid crystals  self‐assembly  supramolecular chemistry
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