Following an initial work on the isolation of a single geometric isomer from an indene-C70 bisadduct (IC70BA) mixture, we report the full fractionation and identification of the bisadduct species in the material. Eleven fractions of IC70BA isomers were separated by high-performance liquid chromatography. A number of fractions contained relatively pure isomer species and their configuration were...

The sizes of available self-assembled hydrogen-bond-based supramolecular capsules and cages are rather limited. largest systems have volumes approximately 1400–2300 Å3. Herein, we report a large, hexameric cage based on intermolecular amide–amide dimerization. unusual structure with openings, reminiscent covalently linked cages, is held together by 24 hydrogen bonds. With diameter 2.3 nm cavity...

In experimental games, we observe the following phenomena: (1) many subjects cooperate contrary to their material interest, (2) they cooperate in a reciprocal manner, (3) subjects often punish those others who behave unkindly, and (4) previous history usually influences subjects’ choices. We propose a simple game-theoretical model to account for these and other experimental phenomena, and compa...

We present a model of directed communication network with endogenous link strength. Agents are endowed with a fixed amount of resource which they can distribute over links. They obtain indirect benefit by the path maximizing the product of link strength. In this environment, the wheel architecture is shown to be not only the unique efficient architecture but also the unique Nash architecture. J...

Azacalix[5]pyridine, a heteroatom bridged calixaromatic with an odd number of arene units, and azacalix[10]pyridine, a giant molecular belt, were selectively synthesized based on a 2 + 3 macrocyclic coupling strategy; both novel macrocyclic hosts formed strong 1 : 1 complexes with fullerenes C60 and C70 in a size-selective manner with association constants up to 1.3 x 10(5) +/- 0.03 x 10(5) M(-1).