Showing papers by "Jong Hyun Ahn published in 2005"
TL;DR: An unusual example of supramolecular barrels in the solid and in aqueous solution is presented, based on the self-assembly of amphiphilic rigid–flexible macrocycles driven by non-covalent interactions.
Abstract: Precise control of supramolecular objects requires the rational design of molecular components, because the information determining their specific assembly should be encoded in their molecular architecture1,2,3,4. In this context, diverse self-assembling molecules including liquid crystals5, dendrimers6, block copolymers7, hydrogen-bonded complexes8 and rigid macrocycles9 are being created as a means of manipulating supramolecular structure. Incorporation of a stiff rod-like building block into an amphiphilic molecular architecture leads to another class of self-assembling molecules10. Aggregation of rod building blocks can generate various nanoscale objects including bundles11,12, ribbons13, tubules14,15 and vesicles16, depending on the molecular structure and/or the presence of a selective solvent. We present here an unusual example of supramolecular barrels in the solid and in aqueous solution, based on the self-assembly of amphiphilic rigid–flexible macrocycles driven by non-covalent interactions. Preliminary experiments show that these amphiphilic macrocycles are membrane-active. The amphiphilic macrocycles might thus lead to an excellent model system for exploring biological processes in supramolecular materials.
86 citations
TL;DR: There is a growing interest in the rational design of new selfassembling molecules that possess various chemical or biological functionalities and self-assemble into tunable and predictable supramolecular structures.
Abstract: There is a growing interest in the rational design of new selfassembling molecules that possess various chemical or biological functionalities and self-assemble into tunable and predictable supramolecular structures. Among self-assembling molecular systems, a dendritic molecular architecture has proved to be a promising scaffold for nanometer-sized aggregation structures including spheres and cylinders. Rod–coil block molecules represent another class of selfassembling systems that are increasingly used for the construction of supramolecular architectures with well-defined shape. The supramolecular structures can be precisely controlled by systematic variation of the type and relative length of the respective blocks. 9] Incorporation of a rigid wedge-shaped building block into a diblock molecular architecture gives rise to a novel class of self-assembling systems consisting of a rigid wedge and a flexible coil because the molecule shares certain general characteristics of both dendrons and block copolymers.
54 citations
TL;DR: This work reports an unusual example of supramolecular structural inversion in coil-rod-coil molecules, from organized coil perforations in a rod layers to organized discrete rod-bundles in a coil matrix, while maintaining a 3-D hexagonal superlattice.
25 citations
TL;DR: In this paper, Figure 1 appeared incorrectly and should have appeared as shown below, instead of shown as shown in Figure 1 in this paper. But the error was later corrected by the authors.
Abstract: Nature Materials 4, 399–402 (2005). In this letter, Figure 1 appeared incorrectly. It should have appeared as shown below.
1 citations