Showing papers by "John Chiefari published in 2017"

Preparation of Forced Gradient Copolymers Using Tube‐in‐Tube Continuous Flow Reactors

Abstract: The preparation of forced gradient polymers has received considerable attention using batch reactors, while the preparation of usable quantities of forced gradient copolymers using continuous flow reactors has been hampered by the need to vary the composition of the monomer feedstock continuously during the reaction. A reactor that allows for addition of a monomer feedstock continuously at all points along the length of the reactor tubing allows for the preparation of forced gradient copolymers in continuous flow reactors, allowing for the scale-up and bulk preparation of these polymers. This study reports here the initial investigation of preparing forced gradient copolymers using the reversible addition–fragmentation chain transfer methodology in tube-in-tube continuous flow reactors.

Biocompatible and hydrophilic polymer conjugate for targeted delivery of an agent

Abstract: The present invention provides a biocompatible and hydrophilic polymer conjugate comprising a linear, aliphatic copolymer backbone to which is conjugated a binding moiety and an agent. The binding moiety is conjugated to an end of the copolymer backbone and facilitates targeted delivery of the agent. Also provided are methods for preparing such polymer conjugates via free radical polymerisation techniques such as reversible addition fragmentation chain transfer (RAFT) polymerisation and uses of such polymer conjugates in diagnosis or therapy.