Micro-Raman high-pressure investigation on the malaria pigment hematin anhydride (β-hematin)

138Synopsis. Variable pressure Raman and emission spectroscopy are used to characterize synthetic malaria pigment, hematin anhydride (β-hematin). At an applied pressure of 10 kbar the autofluoresence at 718 nm is quenched and there is a uniform increase in most Raman bands until 27 kbar when a phase transition occurs.