On May 31, 2020, Hayashi, Mikihiro; Obara, Haruna; Shibata, Keisuke; Sugimoto, Kanta; Takasu, Akinori published an article.Synthetic Route of 111-29-5 The title of the article was Glass transition analysis of model metallosupramolecular polyesters bearing pendant pyridine ligands with a controlled ligand-ligand distance. And the article contained the following:
Supramol. materials formed via metal-ligand coordination, so-called metallosupramol. materials, have attracted attention due to their ability to modify a broad range of phys. properties depending on the association strength at the coordination bond. Here, we demonstrate the correlation between the glass transition properties and the ligand distance by utilizing amorphous polyesters (denoted as PE-Py) with pendant pyridine ligands arranged homogeneously along the chain. The ligand distance is treated as the pyridine group equivalent mol. weight (MPy) and takes values of 900, 750, 550, and 420. The metal salt ZnCl2 forms coordination bonds with the pyridine ligands, generating a metallosupramol. network. The fraction of coordinated pyridine is finely tuned by the mole ratio between the pyridine ligand and ZnCl2 ([Zn2+]/[Py]) while adhering to the stoichiometric rule. DSC measurements reveal that the variation in the glass transition temperature (Tg) with increasing [Zn2+]/[Py] is closely correlated with 1/MPy. Temperature-ramp rheol. measurements are also performed, revealing that the apparent activation energy (Ea) of segmental motion has a quasi-linear relationship with 1/MPy. Thus, the present study demonstrates that the degree of restriction for segmental motion is very systematically strengthened as the ligand distance decreases, highlighting the importance of ligand distance in phys. property control of metallosupramol. materials. The experimental process involved the reaction of Pentane-1,5-diol(cas: 111-29-5).Synthetic Route of 111-29-5
The Article related to polyester bearing zinc pyridine complex preparation glass transition, Inorganic Chemicals and Reactions: Coordination Compounds and other aspects.Synthetic Route of 111-29-5
Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts