Synthesis of new aliphatic poly(ester‐carbonate)s bearing amino groups based on photolabile protecting group and evaluation of antibacterial property

Abstract Amino‐functionalized six‐membered cyclic carbonate 5‐((2‐nitrobenzyl) amino)‐1,3‐dioxan‐2‐one (NBAC) was synthesized with 2‐nitrobenzyl group as photolabile protecting group. The following copolymerization was carried out by using l ‐lactide as comonomer and Sn (Oct) 2 as catalyst. The amino‐functionalized polymer P(LA‐ co ‐AC) was obtained by ultraviolet irradiation of P(LA‐ co ‐NBAC) to remove the protecting group. The structures of products were confirmed by 1 H nuclear magnetic resonance (NMR) and 13 C NMR analysis. The pendant amino groups not only resulted in an enhancement of the hydrophilicity, but also played a role of antibacterial effect due to the positive charge imparted to the material.