Final draft.
*Corrected the names so they have unified abbreviations (DMCYS, DMGSH, DMPEN, DMNAC).
*Added section conclusion 3.1.3
*Integrated the Chem Comm paper into chapter 2 and merged formatting, numbering and figure numbers. (Mind helping me check this is a valid of way of doing a paper chapter? I remember this was commented up last time and I'm not sure if i'm missing anything).
*Added a "extensions to this experiment" to all experiments in section 3
*Name correction on (MeAsO)x - methylarsine oxide
*layout and references have been updated.