3 research outputs found
The Third Ambient Aspirin Polymorph
Polymorphism of aspirin (acetylsalicylic
acid), one of the most
widely consumed medications, was equivocal until the structure of
a second polymorph II, similar in structure to the original form I,
was reported in 2005. Here, the third ambient polymorph of aspirin
is described. It was crystallized from the melt, and its structure
was determined using a combination of X-ray powder diffraction analysis
and crystal structure prediction algorithms
The Third Ambient Aspirin Polymorph
Polymorphism of aspirin (acetylsalicylic
acid), one of the most
widely consumed medications, was equivocal until the structure of
a second polymorph II, similar in structure to the original form I,
was reported in 2005. Here, the third ambient polymorph of aspirin
is described. It was crystallized from the melt, and its structure
was determined using a combination of X-ray powder diffraction analysis
and crystal structure prediction algorithms
A Two-Dimensional Polymer from the Anthracene Dimer and Triptycene Motifs
A two-dimensional
polymer (2DP) based on the dimerization of anthraceno
groups arranged in a triptycene motif is reported. A photoinduced
polymerization is performed in the crystalline state and gives a lamellar
2DP via a crystal-to-crystal (but not single-crystal to single-crystal)
transformation. Solvent-induced exfoliation provides monolayer sheets
of the 2DP. The 2DP is considered to be a tiling, a mathematical approach
that facilitates structural elucidation