Scheme 1. Synthetic Route for the Preparation of Ethylene Glycol Vinyl Ether-Functionalized Cyclic Phosphotriester Monomer 1 and Homopolymer 2 by ROP Followed by Postpolymerization Modifications via Three Different Types of Conjugation Chemistries: Thiol–Ene “Click” Reaction, Acetalization, or Thio–Acetalization Reaction.
