Liu, Ruizhe published the artcileUnraveling Sequence Effect on Glass Transition Temperatures of Discrete Unconjugated Oligomers, Recommanded Product: Dimethyl fumarate, the publication is Macromolecular Rapid Communications (2022), 43(4), 2100666, database is CAplus and MEDLINE.
Sequence plays a critical role in enabling unique properties and functions of natural biomols., which has promoted the rapid advancement of synthetic sequence-defined polymers in recent decades. Particularly, study of short chain sequence-defined oligomers (also called discrete oligomers) on their properties has become a hot topic. However, most studies have focused on discrete oligomers with conjugated structures. But unconjugated oligomers remain relatively underexplored. Three pairs of discrete oligomers with the same composition but different sequence for each pair are employed for studying their glass transition temperatures (Tgs). The resultant Tgs of sequenced oligomers in each pair are significantly different (up to 11.6°), attributable to variations in mol. packing as demonstrated by mol. dynamics and d. function theory simulations. Intermol. interaction has less impact on Tgs than intramol. interaction. The mechanistic study into 2 model dimers suggests that monomer sequence caused the difference in intramol. rotational flexibility of the sequenced oligomers. Despite having different monomer sequence and Tgs, the oligomers have very similar solubility parameters, which supports their potential use as effective oligomeric plasticizers to tune the Tgs of bulk polymer materials.
Macromolecular Rapid Communications published new progress about 624-49-7. 624-49-7 belongs to esters-buliding-blocks, auxiliary class Inhibitor,Natural product, name is Dimethyl fumarate, and the molecular formula is C6H8O4, Recommanded Product: Dimethyl fumarate.
Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics