X-Ray powder diffraction was measured to compare crystallinity.
Patterns were collected with a Panalytical Phillips X’Pert
PRO multipurpose diffractometer, with samples mounted on a zero
background silicon wafer fixed in a generic sample holder, using
monochromatic CuK˛ radiation ( = 1.5418 Å) in a range from 5 to
50 2 with step size of 0.026 and time per step of 80 s at room
temperature.