报 告 题 目:Hierarchical engineering of 2D self-assembled porous organic-based nanoarchitectures on metal surfaces :
on-surface synthesis of porous organic covalent-structures and self-assembled hybrid organic-ionic architectures
报 告 人:Prof. Fabien SILLY, CEA Saclay, France
时 间:2017年7月13日(星期四)下午2:00
地 点:南楼5层会议室
邀 请 人:裘晓辉 研究员(Tel:82545583)
报告摘要:
Engineering novel atomic and molecular nanostructures on surfaces is a challenge in nanosciences. We develop new process to engineer novel two-dimensional porous nanoarchitectures based on molecular self-assembly on surfaces. PTCDI molecule self-assembled into compact domains on metal surfaces. We show that novel porous hybrid nanoarchitectures can be engineered by mixing this molecule with ionic compounds. We fabricated three two-dimensional self-assembled hybrid PTCDI–NaCl nanoarchitectures, i.e. a flower-structure, a mesh-structure and a chain-structure on Au(111). Scanning tunneling microscopy (STM) reveals that NaCl-dimers selectively interact with molecular N–H groups. The PTCDI∙∙∙NaCl-dimer binding appears to be highly directional. Additionally, alternatively engineering two-dimensional (2D) covalent carbon-based nanoarchitectures has received tremendous attention during the recent years. We investigate on-surface bottom-up synthesis to create patterned graphene nanoarchitectures via Ullmann coupling.
报告人简介:
Dr Silly completed his doctorate in physics with the investigation of photon emission induced by scanning tunneling microscopy on nanosctucured surfaces at the Pierre and Marie Curie University, Paris, in 2001. After his experimental study of adatom self-organization mediated by two-dimensional electron gas on metal surfaces in Lausanne University, Switzerland, as a junior lecturer, he joined the Department of Materials at the University of Oxford, UK, in 2003, where he investigated the growth of supported nanocrystals using scanning tunneling microscopy (STM). He received the Young Scientist Award from the British Association of Crystal Growth and the Award of Merit from Department of Materials, University of Oxford for his work in 2005. He then joined in 2005 the Linkping University, Sweden, to characterize semiconducting surfaces using light-assisted STM. In 2006, Dr. Silly returned to the Department of Materials at the University of Oxford, UK, to investigate multicomponent supramolecular self-assemblies on surfaces. In 2007 he was appointed Assistant Professor at the University of Groningen, the Netherlands and in 2008 he joined the CEA Saclay, France, to develop his research activity in the area of nanoscience. In 2010, Dr Silly was awarded the prestigious Starting Grant by the European Research Council (ERC). He now runs a research group investigating the atomic scale structure and properties of supported hybrid magnetic nanoarchitectures.