N-Benzyloxyethyl cyclic alpha-peptoids of various size were prepared and their conformational features were investigated by means of computational, spectroscopic, and X-ray crystallographic studies.

In this paper, we discuss the remarkable CO2 absorption properties of a new solvent-free porous organic solid, 1,2-dimethoxyp-tert-butylcalix[4]dihydroquinone. Exposure of 1 to H2 gas at 20 atm did not result in detectable absorption of this gas. High selectivity for CO2 over H2 is a requirement if these materials are to be used for CO2 separations from synthesis gas mixtures exiting, for example, a water-gas shift reactor

L-Proline and N-methoxyethyl glycine have been included in novel cyclic hexameric peptoids. Supramolecular coordination with Na(+) triggered the formation of the first 1D metal-organic framework based on peptoids.