Figure 1
From: A Guanidine-Based Superbase as Efficient Chemiluminescence Booster

Chemiluminescence reaction of luminol in the presence of a base (and catalyst) triggered by H2O2, leading to the formation of 3-aminophthalic acid (3-APA). Next to previously used bases and catalysts, the structures of the organic superbases TBD, TMG and DBU are displayed.