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McCurdy RD, Delgado A, Jiang J, Zhu J, Wen ECH, Blackwell RE, Veber GC, Wang S, Louie SG, Fischer FR. Engineering Robust Metallic Zero-Mode States in Olympicene Graphene Nanoribbons. J Am Chem Soc 2023. [PMID: 37428750 PMCID: PMC10360063 DOI: 10.1021/jacs.3c01576] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/12/2023]
Abstract
Metallic graphene nanoribbons (GNRs) represent a critical component in the toolbox of low-dimensional functional materials technology serving as 1D interconnects capable of both electronic and quantum information transport. The structural constraints imposed by on-surface bottom-up GNR synthesis protocols along with the limited control over orientation and sequence of asymmetric monomer building blocks during the radical step-growth polymerization have plagued the design and assembly of metallic GNRs. Here, we report the regioregular synthesis of GNRs hosting robust metallic states by embedding a symmetric zero-mode (ZM) superlattice along the backbone of a GNR. Tight-binding electronic structure models predict a strong nearest-neighbor electron hopping interaction between adjacent ZM states, resulting in a dispersive metallic band. First-principles density functional theory-local density approximation calculations confirm this prediction, and the robust, metallic ZM band of olympicene GNRs is experimentally corroborated by scanning tunneling spectroscopy.
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Affiliation(s)
- Ryan D McCurdy
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Aidan Delgado
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Jingwei Jiang
- Department of Physics, University of California, Berkeley, California 94720, United States
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Junmian Zhu
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Ethan Chi Ho Wen
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Raymond E Blackwell
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Gregory C Veber
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Shenkai Wang
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Steven G Louie
- Department of Physics, University of California, Berkeley, California 94720, United States
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Felix R Fischer
- Department of Chemistry, University of California, Berkeley, California 94720, United States
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- Kavli Energy NanoSciences Institute at the University of California Berkeley and the Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- Bakar Institute of Digital Materials for the Planet, Division of Computing, Data Science, and Society, University of California, Berkeley, California 94720, United States
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McCurdy RD, Jacobse PH, Piskun I, Veber GC, Rizzo DJ, Zuzak R, Mutlu Z, Bokor J, Crommie MF, Fischer FR. Synergetic Bottom-Up Synthesis of Graphene Nanoribbons by Matrix-Assisted Direct Transfer. J Am Chem Soc 2021; 143:4174-4178. [PMID: 33710887 DOI: 10.1021/jacs.1c01355] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The scope of graphene nanoribbon (GNR) structures accessible through bottom-up approaches is defined by the intrinsic limitations of either all-on-surface or all-solution-based synthesis. Here, we report a hybrid bottom-up synthesis of GNRs based on a Matrix-Assisted Direct (MAD) transfer technique that successfully leverages technical advantages inherent to both solution-based and on-surface synthesis while sidestepping their drawbacks. Critical structural parameters tightly controlled in solution-based polymerization reactions can seamlessly be translated into the structure of the corresponding GNRs. The transformative potential of the synergetic bottom-up approaches facilitated by the MAD transfer techniques is highlighted by the synthesis of chevron-type GNRs (cGNRs) featuring narrow length distributions and a nitrogen core-doped armchair GNR (N4-7-ANGR) that remains inaccessible using either a solution-based or an on-surface bottom-up approach alone.
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Affiliation(s)
- Ryan D McCurdy
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Peter H Jacobse
- Department of Physics, University of California, Berkeley, California 94720, United States
| | - Ilya Piskun
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Gregory C Veber
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Daniel J Rizzo
- Department of Physics, University of California, Berkeley, California 94720, United States
| | - Rafal Zuzak
- Department of Physics, University of California, Berkeley, California 94720, United States
| | - Zafer Mutlu
- Department of Electrical Engineering and Computer Sciences, University of California, Berkeley, California 94720, United States
| | - Jeffrey Bokor
- Department of Electrical Engineering and Computer Sciences, University of California, Berkeley, California 94720, United States.,Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Michael F Crommie
- Department of Physics, University of California, Berkeley, California 94720, United States.,Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States.,Kavli Energy NanoSciences Institute at the University of California Berkeley and the Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Felix R Fischer
- Department of Chemistry, University of California, Berkeley, California 94720, United States.,Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States.,Kavli Energy NanoSciences Institute at the University of California Berkeley and the Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
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