The report describes activities within the project “Advanced materials - Thematic conferences: Assessment of needs to act on chemical safety” to provide discussion input on approaches to describe, cluster and prioritize advanced materials. The report presents a structuring of the field of advanced materials by screening existing definitions and classifications as well scientific activities related to advanced materials. It presents potential clusters of advanced materials by brief characterisation of identified clusters in the format of factsheets. Furthermore, the report proposes a set of criteria to assess the relevance of advanced materials regarding chemical safety.