A new style of event is introduced for the first time into ECC-6. It consists in a series of presentation and discussion sessions lead by eminent scientists in their field. The aims of the master-classes fall into three broad categories. They will be focussed on a particular topic presented for scientists who are not directly involved the field but have an interest in learning more about the topic; a particular topic that is “hot” in Chemistry and about which there are competing views and debate; or a presentation of general interest offered under a new light that will offer a different and entertaining insight to the topic.