Controlled Synthesis and Evaluation of Atomically Precise Graphitic Nanostructures
Abstract
Title: Controlled Synthesis and Evaluation of Atomically Precise Graphitic NanostructuresBottom-up on-surface approach to the synthesis of graphitic nanostructures has benefited from the combination of reproducible fabrication, the extraordinary programmability and tunability by chemical design, and the ability to order them into large-scale arrays. Over the last decade, remarkable progresses have been made toward bottom-up synthesis of graphene nanoribbons (GNRs). However, the on-surface reactions of molecular precursors performed under ultra-highvacuum conditions have so far grown graphitic nanostructures with length-scales up to tens of nm and on metallic substrates only, which are neither appropriate for hosting functional electronic devices nor for assessing the intrinsic GNR properties due to often unavoidable orbital hybridization with the supporting substrates. To solve these problems, it is necessary to take adrastically different approach to developing and understanding the synthetic electronic systems. Here in this proposal, we will develop a new synthesis approach to realization of extended graphitic nanostructures at atomic precision both on metallic and non-metallic substrates, coupled with in situ characterizations with scanning tunneling microscopy to understand the inter- and intra-molecular interactions, the scaling of electronic properties in length and complexity. Our hypothesis is that by using atomically precise synthesiscomplemented by advanced microscopy and spectroscopy, as well as theory/simulation to enable atomistic level control and understandingof structure-property relationships in candidate materialsa rational approach to graphitic device structure with designers functionalities can be established. The success of this research will allow us to control the structure and chemistry of graphitic molecular materials bottom up with atomic resolution for enhanced electronic properties.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Apr 29, 2020
- Source ID
- N000142012302
Entities
People
- An-Ping Li
Organizations
- Office of Naval Research
- United States Navy
- University of Tennessee