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Photocatalytic Polymerisation of Polymer Brushes

Synthesis of RAFT Initiator on Glassy Carbon Surfaces

Student: Jonas Greibe Hansen

Aim

The aim of this project is to synthesise a RAFT initiator on a glassy carbon surface. The purpose of the initiators is to use them in a photocatalytic polymerisation of polymer brushes in water.

 

Methods

The project will start to focus on two potential methods.

Method 1 uses a disulfide diazonium salt as a grafting agent. By reducing the disulfide will cleave the disulfide, leaving a monolayer of the grafting agent. The thiolate might then react with carbondisulfide to form trithiocarbonate, which can react with a benzylic position to form a RAFT agent.

Method 2 is another approach to form a RAFT agent. Diethylcarbamodithioate (DEDTC) will be added on the benzylic position in 1-(chloromethyl)-4-nitrobenzene. This will then be grafted on a surface.

 

Perspectives

With a photo catalysed polymerisation, it will be possible to make polymer brushes in water and without metals. Hopefully the photo catalysed reaction will have fast reaction rates for quick and efficient polymerisation.

 

Involved Partners

SP group, Radisurf, Alfa Laval.