The yields of the polymer nanospheres are typically 70_90%, depending on the
synthesis conditions (see SI).
Thanks to the diversity of the monomers that benzoxazine chemistry offers, one can envisage the generality and flexibility of our synthesis toward highly uniform polymer and carbon nanospheres.
For example, when we replaced DAH with other amines, such as 1,2-diaminoethane, and followed the synthesis conditions of PBFS-2, polymer nanospheres with uniform sizes were obtained as well (see representative SEM images in SI Figure S6).