Fig. 1. (a) First-order kinetics investigation of PHEMA; (b) number-average molecular weight (M_n) and molecular weight distribution (M_w/M_n) vs. monomer conversion for the RAFT polymerization of PHEMA; (c) ¹H NMR spectrum of PHEMA recorded at 25 °C with DMSO-d₆ as solvent; (d) FT-IR spectra of PHEMA, anthraquinone-2-carboxylic acid and functional PHEMA; (e) FT-IR spectra of GO and GO-DETA; (f) the TG spectra of GO, PHEMA and nanocomposite.