《Systematic evaluation of textural properties, activation temperature and gas uptake of Cu2(pzdc)2L [L = dipyridyl-based ligands] porous coordination pillared-layer networks》 was published in Dalton Transactions in 2012. These research results belong to Garcia-Ricard, Omar J.; Silva-Martinez, Juan C.; Hernandez-Maldonado, Arturo J.. Category: amides-buliding-blocks The article mentions the following:
In situ high temperature x-ray diffraction, nitrogen porosimetry and gas adsorption at room temperature were used to elucidate the effect of the degassing or activation temperature on the long-range and micropore textural properties of a series of coordination polymers with pillared-layer structures. Ramp-and-soak TGA performed at selected activation temperatures were used to verify the thermal stability of a CPL-n series [Cu2(pzdc)2L; H2pzdc = pyrazine-2,3-dicarboxylic acid; L = 4,4′-azopyridine (apy) for CPL-4, 1,2-bis(4-pyridyl)ethylene (bpe) for CPL-5, N-(4-pyridyl)isonicotinamide (pia) for CPL-6, and 1,2-bis(4-pyridyl)glycol (dpyg) for CPL-7]. Although the activation temperatures were far below the decomposition point of the complexes, these resulted in significant and unique changes in micropore surface area and volume, even for CPL-4, -5 and -6, which contained pillar ligands with similar dimensions and similar structural long-range order. For the case of CPL-7, however, the framework appeared to be non-porous at any given activation temperature Pure component equilibrium adsorption data gathered for CO2, CH4, and N2 were used to elucidate the CPL-n materials potential for storage and separations at room temperature All of the materials exhibited considerable selectivity toward CO2, particularly at moderate pressures. Meanwhile, CO2 isosteric heats of adsorption indicated that the pore functionalities arising from the pillar ligands provided similar interactions with the adsorbate in the cases of CPL-4 and -5. For CPL-6, the presence of the carbonyl (C:O) group appeared to enhance interactions with CO2 at low loadings. After reading the article, we found that the author used N-(Pyridin-4-yl)isonicotinamide(cas: 64479-78-3Category: amides-buliding-blocks)
N-(Pyridin-4-yl)isonicotinamide(cas: 64479-78-3) belongs to amides. The solubilities of amides and esters are roughly comparable. Typically amides are less soluble than comparable amines and carboxylic acids since these compounds can both donate and accept hydrogen bonds.Category: amides-buliding-blocks
Referemce:
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics