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UV–vis spectra of the solution containing NB-PBAE-NB and P(MAG-co-HEMA)-Tz in DMSO at specific time intervals during the formation of P(MAG-co-HEMA)-b-PBAE via the tetrazine mediated IEDDA click reaction. P(MAG-co-HEMA)-Tz was added in two portions at t = 0 h and t = 26 h.
