4.5 Article

Polymorphic phase transitions and melting in (+)-decursinol crystals studied by differential scanning calorimetry

Journal

THERMOCHIMICA ACTA
Volume 717, Issue -, Pages -

Publisher

ELSEVIER
DOI: 10.1016/j.tca.2022.179361

Keywords

Organic crystal growth; X-ray diffraction; Differential scanning calorimetry; Polymorphic phase transitions; Melting

Funding

  1. National Research Foundation of Korea (NRF) - Korea government (MSIT) [1711139323]
  2. National Research Foundation of Korea (NRF) - Korean Government (MSIT) [2020R1A2C101083111]

Ask authors/readers for more resources

The powder X-ray diffraction (PXRD) and differential scanning calorimetry (DSC) were used to characterize the structure and detect phase transformations of polycrystalline (+)-decursinol. The crystal system of decursinol was determined to be orthorhombic with a space group P212121 using PXRD. DSC analysis showed two polymorphic phase transitions at approximately 64°C and 68°C, and a melting peak at an extrapolated onset temperature of approximately 177°C.
The powder X-ray diffraction (PXRD) and differential scanning calorimetry (DSC) have been conducted both for structural characterization of polycrystalline (+)-decursinol (C14H14O4) and for detecting phase transformations. Using PXRD, the crystal system of decursinol was determined to be orthorhombic with a space group P212121, and the lattice parameters were derived. Upon heating in DSC, two polymorphic phase transitions were recog-nized as weak endothermic peaks around Tc2+approximate to 64 degrees C and Tc1+approximate to 68 degrees C. Further heating showed a large peak of melting with the extrapolated onset temperature Tm,o approximate to 177 degrees C.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.5
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available