Figure 4

Top: Optical micrographs of as-deposited thin films of D; middle same film after 10 min at 140 °C; bottom UV-Vis absorption spectra of a film of D before (blue) and after (red) ten minutes at 140 °C.

Top: Optical micrographs of as-deposited thin films of D; middle same film after 10 min at 140 °C; bottom UV-Vis absorption spectra of a film of D before (blue) and after (red) ten minutes at 140 °C.