Radicals at Interfaces: Understanding and Exploiting the Physical Behaviour of Radicals on the Surfaces of Biological and Bulk Materials

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Chemical species known as radicals tend to be highly reactive because they have one or more unpaired electrons.  In living systems, oxygen-centred radicals are present because of the respiration of oxygen.  These oxygen-centred radicals are extremely damaging to biological materials such as proteins because they initiate chemical reactions that destroy biomaterial function and consequently induce disease states.  In high-technology applications, radicals often serve as defect centres that inhibit the performance of electronic devices such as computer chips by acting as charge-traps.  In both of these diverse example systems, radicals are ubiquitous.