Shape‐Persistent Acetylenic Macrocycles for Ordered Systems

Abstract

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Giant Thienylene-Acetylene-Ethylene Macrocycles with Large Two-Photon Absorption Cross Section and Semishape-Persistence

“…2 Macrocyclic thiophene n-mers 1-4 (n ) 12, 18, 24, and 30, respectively) have both moderate molecular rigidity and flexibility with 21-60 Å inner diameters 3,4 and can change their conformation according to an external parameter. 5 Since these π-expanded oligothiophenes possess similar molecular shape, important information can be obtained related to their ring size and functional properties, including evidence of cooperative enhancement in their nonlinear optical responses. In this contribution we investigate the two-photon properties of cyclic thiophenes 1-4 with varying sizes and number of building block chromophores.…”

Hexagonally Ordered Nanostructures Comprised of a Flexible Disk-like Molecule with High Self-Assembling Properties at Neutral and Cationic States

“…Self-assembly of organic π-conjugated systems in solution can be widely utilized to construct unique, complex supramolecular structures. 1,2 Thus, π-conjugated molecules with either electronwithdrawing groups or large π-circles and disks self-aggregate in solution by π-π stacking interactions and solvophobic effects. 3 On the other hand, solid state and surface organization of π-conjugated molecules is frequently applied to molecular electronics.…”

Curiosities of Weight Loss Diets of the Last 60 Years

“…There are no validated studies published on it, and St. Jeor et al [216] indicated the weight loss is due to caloric restriction. Hoeger and Hoeger [217] indicated that nausea, bad breath, fatigue, constipation, and a lack of fiber, vitamins, and minerals may increase the risk of osteoporosis, coronary heart disease, and cancer. In 2000s, Drs.…”