Figure 5
From: A new look at imines and their mixture with PC71BM for organic, flexible photovoltaics
High-pressure absorption spectra for: (a) PC71BM dissolved in chloroform compressed up to 3.77 GPa; and (b) the solution of SC3 in 1,2-dichloroethane compressed up to 1.41 GPa. The PC71BM:chloroform solution remained liquid up to 0.74 GPa (i.e. approximately the freezing pressure of chloroform at 296 K)41; the inset shows the DAC chamber with the solution at 0.13 GPa. The SC3:1,2-dichloroethane solution froze at 0.50 GPa, which is lower than the freezing pressure of the pure 1,2-dichloroethane at 0.7 GPa42. We did not observe the precipitation of PC71BM or SC3 after the crystallization of the solvents.
