Fig. 3: Front inhibition and acceleration.
From: Active light-controlled frontal ring-opening metathesis polymerization

a Representative curves of front position versus time for 2-channel tests with in situ irradiation (365 nm, 180 mW cm−2) and varying molar equivalents of NPPOC-TMG:catalyst (0–12 mol eq.). Purple indicates the irradiated region. b Inhibition and acceleration in 2-channel tests with NPPOC-TMG (365 nm, 180 mW cm−2) and CQ/EDAB (470 nm, 120 mW cm−2) at two different loadings. Data from three runs are shown for each formulation, indicated by the different sizes and shades of symbols. The blue and purple shading indicate the irradiated region. The position of the irradiated front relative to the control (unirradiated) front is tracked by subtracting the control front position from the irradiated front position at time (t) and plotting the relative position versus the distance of the control front. Negative values show inhibition and positive values show acceleration. c A 3-channel experiment showing in situ orthogonal control of FROMP in a single resin with both NPPOC-TMG (8 mol eq.) and CQ/EDAB (0.5 wt% CQ and 1 wt% EDAB) using 220 mW cm−2 365 nm light (left channel, inhibition) and 200 mW cm−2 470 nm light (right channel, acceleration). See also Supplementary Movie 2.