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Title: Dense monolayer films of atomically precise graphene nanoribbons on metallic substrates enabled by direct contact transfer of molecular precursors

Abstract

Atomically precise graphene nanoribbons (GNRs) of two types, chevron GNRs and N = 7 straight armchair GNRs (7-AGNRs), have been synthesized through a direct contact transfer (DCT) of molecular precursors on Au(111) and gradual annealing. This method provides an alternative to the conventional approach for the deposition of molecules on surfaces by sublimation and simplifies preparation of dense monolayer films of GNRs. The DCT method allows deposition of molecules on a surface in their original state and then studying their gradual transformation to polymers to GNRs by scanning tunneling microscopy (STM) upon annealing. We performed STM characterization of the precursors of chevron GNRs and 7-AGNRs, and demonstrate that the assemblies of the intermediates of the GNR synthesis are stabilized by π–π interactions. This conclusion was supported by the density functional theory calculations. Thus, the resulting monolayer films of GNRs have sufficient coverage and density of nanoribbons for ex situ characterization by spectroscopic methods, such as Raman spectroscopy, and may prove useful for the future GNR device studies.

Authors:
ORCiD logo [1];  [2]; ORCiD logo [3];  [1]; ORCiD logo [1];  [1];  [4]; ORCiD logo [5]; ORCiD logo [6]
  1. Univ. of Nebraska, Lincoln, NE (United States). Dept. of Chemistry
  2. Univ. of Nebraska, Lincoln, NE (United States). Dept. of Physics and Astronomy
  3. Brookhaven National Lab. (BNL), Upton, NY (United States). Center for Functional Nanomaterials (CFN)
  4. Univ. of Nebraska, Lincoln, NE (United States). Dept. of Chemistry and Nebraska Center for Materials and Nanoscience
  5. Univ. of Nebraska, Lincoln, NE (United States). Dept. of Physics and Astronomy and Nebraska Center for Materials and Nanoscience
  6. Univ. of Nebraska, Lincoln, NE (United States). Dept. of Chemistry and Nebraska Center for Materials and Nanoscience; National Univ. of Science and Technology (MISiS), Moscow (Russia)
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES); US Department of the Navy, Office of Naval Research (ONR); National Science Foundation (NSF); Materials Research Science and Engineering Center (MRSEC); Nebraska Nanoscale Facility; National Univ. of Science and Technology (MISiS), Moscow (Russia)
OSTI Identifier:
1426453
Report Number(s):
BNL-203341-2018-JAAM
Journal ID: ISSN 2040-3364; NANOHL
Grant/Contract Number:  
SC0012704; N00014-16-1-2899; CHE-1455330; DMR-1420645; ECCS-1542182; K2-2016- 033
Resource Type:
Accepted Manuscript
Journal Name:
Nanoscale
Additional Journal Information:
Journal Volume: 9; Journal Issue: 47; Journal ID: ISSN 2040-3364
Publisher:
Royal Society of Chemistry
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 77 NANOSCIENCE AND NANOTECHNOLOGY; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY

Citation Formats

Teeter, Jacob D., Costa, Paulo S., Zahl, Percy, Vo, Timothy H., Shekhirev, Mikhail, Xu, Wenwu, Zeng, Xiao Cheng, Enders, Axel, and Sinitskii, Alexander. Dense monolayer films of atomically precise graphene nanoribbons on metallic substrates enabled by direct contact transfer of molecular precursors. United States: N. p., 2017. Web. doi:10.1039/C7NR06027K.
Teeter, Jacob D., Costa, Paulo S., Zahl, Percy, Vo, Timothy H., Shekhirev, Mikhail, Xu, Wenwu, Zeng, Xiao Cheng, Enders, Axel, & Sinitskii, Alexander. Dense monolayer films of atomically precise graphene nanoribbons on metallic substrates enabled by direct contact transfer of molecular precursors. United States. https://doi.org/10.1039/C7NR06027K
Teeter, Jacob D., Costa, Paulo S., Zahl, Percy, Vo, Timothy H., Shekhirev, Mikhail, Xu, Wenwu, Zeng, Xiao Cheng, Enders, Axel, and Sinitskii, Alexander. Thu . "Dense monolayer films of atomically precise graphene nanoribbons on metallic substrates enabled by direct contact transfer of molecular precursors". United States. https://doi.org/10.1039/C7NR06027K. https://www.osti.gov/servlets/purl/1426453.
@article{osti_1426453,
title = {Dense monolayer films of atomically precise graphene nanoribbons on metallic substrates enabled by direct contact transfer of molecular precursors},
author = {Teeter, Jacob D. and Costa, Paulo S. and Zahl, Percy and Vo, Timothy H. and Shekhirev, Mikhail and Xu, Wenwu and Zeng, Xiao Cheng and Enders, Axel and Sinitskii, Alexander},
abstractNote = {Atomically precise graphene nanoribbons (GNRs) of two types, chevron GNRs and N = 7 straight armchair GNRs (7-AGNRs), have been synthesized through a direct contact transfer (DCT) of molecular precursors on Au(111) and gradual annealing. This method provides an alternative to the conventional approach for the deposition of molecules on surfaces by sublimation and simplifies preparation of dense monolayer films of GNRs. The DCT method allows deposition of molecules on a surface in their original state and then studying their gradual transformation to polymers to GNRs by scanning tunneling microscopy (STM) upon annealing. We performed STM characterization of the precursors of chevron GNRs and 7-AGNRs, and demonstrate that the assemblies of the intermediates of the GNR synthesis are stabilized by π–π interactions. This conclusion was supported by the density functional theory calculations. Thus, the resulting monolayer films of GNRs have sufficient coverage and density of nanoribbons for ex situ characterization by spectroscopic methods, such as Raman spectroscopy, and may prove useful for the future GNR device studies.},
doi = {10.1039/C7NR06027K},
journal = {Nanoscale},
number = 47,
volume = 9,
place = {United States},
year = {Thu Nov 16 00:00:00 EST 2017},
month = {Thu Nov 16 00:00:00 EST 2017}
}

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