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The formation of helical structures by the supramolecular polymerization of a variety of self-assembling units is reviewed. These scaffolds are usually obtained by the operation of efficient transfer or amplification of chirality phenomena in which the starting self-assembling molecules possess different elements of asymmetry like point or axial chirality. We review herein relevant examples of helical supramolecular structures investigated under thermodynamic control and we also highlight the helical outcome of remarkable examples of chiral entities obtained through kinetic control. Finally, selected examples of flexible macroscopic chirality and catalysis are described to illustrate the applicability of helical aggregates.
This article was published in the following journal.
Name: Chemistry (Weinheim an der Bergstrasse, Germany)
Upon cooling in various solvents, chiral triarylamine tris-amide unimers produce organogels by stacking into helical supramolecular polymers which subsequently bundle into larger fibers. Interestingly...
Recent years have witnessed an increasing interest in hybrid molecular systems in which the programmability of DNA hybridization is used to introduce enhanced molecular control in synthetic systems. T...
Chiral inorganic nanomaterials are of great interest because of their excellent optical properties. Most of the attention has been focused on the utilization of biomolecules or their derivatives as li...
Introduction of chirality into supramolecular self-assembly system plays an indispensable role in attaining specific molecular recognition ability. Herein, a chiral anticancer drug 5'-deoxy-5-fluorour...
Frank-Kasper phases and liquid quasicrystals self-organize from supramolecular spheres of dendrimers, block copolymers, surfactants and other self-assembling molecules. These spheres are expected to b...
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To assess the safety and efficacy of a single fraction of radiotherapy using helical tomotherapy to treat bone metastases.
Although salivary contents play a major role in the early stage of food digestion process, their role in taste perception of glucose polymers is essentially unknown. It is hypothesized tha...
The major problem in stroke survivors that is being addressed in this research project is walking asymmetry, i.e., difference between the legs during walking (e.g. steps on the more affect...
Study on 'The Use of Non-Contrast Helical Computerized Tomogram in Predicting Treatment Outcomes of Upper Ureteric Stone by Extracorporeal Shock Wave Lithotripsy Using the Sonolith 4000+ Lithotripter'
The purpose of this research is to assess the role of non-contrast helical computerized tomogram in predicting the treatment outcome of upper ureteric stone by extracorporeal shock wave li...
Polymers of N-SUBSTITUTED GLYCINES containing chiral centers at the a-position of their side chains. These oligomers lack HYDROGEN BONDING donors, preventing formation of the usual intrachain hydrogen bonds but can form helices driven by the steric influence of chiral side chains.
Congenital or acquired asymmetry of the face.
High-molecular-weight insoluble polymers that contain functional cationic groups capable of undergoing exchange reactions with anions.
High molecular weight insoluble polymers which contain functional anionic groups that are capable of undergoing exchange reactions with cations.
High molecular weight, insoluble polymers which contain functional groups that are capable of undergoing exchange reactions (ION EXCHANGE) with either cations or anions.