Fig. 1From: Mucoadhesive, antioxidant, and lubricant catechol-functionalized poly(phosphobetaine) as biomaterial nanotherapeutics for treating ocular drynessSynthesis routes and characterizations of copolymers. (a) The preparation of DMA monomer and p(MPC-co-DMA) copolymers. (b) 1H NMR spectrum of p(MPC1-co-DMA1) in D2O. (c) UV-VIS spectra of p(MPC-co-DMA) (1 wt%) with different compositions in PBS at pH 7.4Back to article page