There are journal articles removed from the full text to uphold Copyright permissions. Alternative versions of these articles can be found at Section 1.2.1 link to http://eprints.bham.ac.uk/985/ Section 2.1.1 link to http://eprints.bham.ac.uk/1004/ Section 2.4.1 link to http://eprints.bham.ac.uk/983/ Section 2.7.1 link to http://eprints.bham.ac.uk/1008/ Section 4.3 link to http://epapers.bham.ac.uk/1573/ Other papers written by the author are: http://pubs.rsc.org/en/content/articlelanding/2007/em/b616567b http://eprints.bham.ac.uk/1004/ http://eprints.bham.ac.uk/992/ http://eprints.bham.ac.uk/1007/ http://eprints.bham.ac.uk/995/ http://eprints.bham.ac.uk/1002/