Two-dimensional self-organization of rectangular OPE amphiphiles into microcrystalline lamellae.

Palladium- or proton-induced submicro spherical aggregation of macrocyclic amphiphiles in aqueous solution.

Synthetic amphiphiles have been found to self-assemble into a variety of structures such as micelles, vesicles, cylinders and lamellae in aqueous media over many length scales. We report herein cation-induced aggregation of hexaaza-cyclophanes in water. Pd(2+)- or proton-induced formation of submicro spherical aggregates was observed by several spectroscopic and microscopic methods.

Unraveling the mechanism of nanotube formation by chiral self-assembly of amphiphiles.

The self-assembly of nanotubes from chiral amphiphiles and peptide mimics is still poorly understood. Here, we present the first complete path to nanotubes by chiral self-assembly studied with C(12)-β(12) (N-α-lauryl-lysyl-aminolauryl-lysyl-amide), a molecule designed to have unique hybrid architecture. Using the technique of direct-imaging cryo-transmission electron microscopy (cryo-TEM), we s...

Self-assembly of laterally-tethered nanorods.

We report results from a computational study of laterally tethered nanorod "shape amphiphiles". Our simulations predict that the model nanorods self-assemble into stepped-ribbon-like micelles, a centered rectangular stepped-ribbon phase, and two structurally different liquid crystalline bilayer phases: one in which the bilayers have C(mm) symmetry and another in which they have P(2) symmetry. W...

 Abstract: Packing rectangular shapes into a rectangular space is one of the most important discussions on Cutting & Packing problems (C;P) such as: cutting problem, bin-packing problem and distributor's pallet loading problem, etc. Assume a set of rectangular pieces with specific lengths, widths and utility values. Also assume a rectangular packing space with specific width and length. The obj...

Supramolecular Assemblies of Starlike and V-Shaped PB-PEO AmphiphilesThe authors are grateful to the Donors of the American Chemical Society Petroleum Research Fund for partial support of this research (ACS-PRF No. 40727 G-10). PB[equals]polybutadiene, PEO[equals]poly(ethylene oxide).

Self-assembly of linear amphiphiles is a well-known phenomenon, and the number of different structures observed both in the solid-state and in selective solvents is exceedingly large. It is difficult to envision a diblock amphiphile that would not undergo self-assembly, and in this context, the terms “linear amphiphilic” and “self-assembling” are nearly synonymous. Branched amphiphiles such as ...