We start by considering the CH region. Upon exposure to TDMAH, we immediately observe the formation of bands at 2861, 2818 and 2774 cm -1 . The bands increase in intensity and gradually shift to higher wavenumbers. The two bands at higher wavenumbers shift to 2872 and 2830 cm -1 , respectively. The band at lower wavenumber first shifts to 2767 and, finally, to 2779 cm -1 . The integrated CH peak area increases with the number of pulses and eventually levels off after approximately 60 pulses. The signals at 1240 and 942 cm -1 are also present from the first pulse onwards. Similar to the behavior in the CH region, both signals increase in intensity and gradually blueshift to 1253 and 954 cm -1 , respectively. Looking at the evolution of the peak area, we observe that the peak area also increases for both signals upon initial exposure to TDMAH. After pulse 30, the peak area for the signal at 1240 -1253 cm -1 remains constant. In contrast, the peak area of the signal at 942 -954 cm -1 increases until it reaches its maximum after pulse 33 and then slightly decreases until saturation at the highest dose. Upon closer inspection, all signals originate from two overlapping bands that change their ratio over the course of the nucleation experiment, which is reflected as a shift.