Synthesis and characterization of low-dimensional N-heterocyclic carbene lattices-Reference-Cited by-同舟云学术

Synthesis and characterization of low-dimensional N-heterocyclic carbene lattices

Published:2024-05-24 Issue:6698 Volume:384 Page:895-901
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Qie Boyu¹²^ORCID,Wang Ziyi²³⁴^ORCID,Jiang Jingwei³⁴^ORCID,Zhang Zisheng⁵^ORCID,Jacobse Peter H.³⁴^ORCID,Lu Jiaming³^ORCID,Li Xinheng³,Liu Fujia¹^ORCID,Alexandrova Anastassia N.⁵⁶⁷,Louie Steven G.³⁴^ORCID,Crommie Michael F.²³⁴^ORCID,Fischer Felix R.¹²⁴⁸^ORCID

Affiliation:

1. Department of Chemistry, University of California, Berkeley, Berkeley, CA 94720, USA.

2. Kavli Energy NanoScience Institute at the University of California, Berkeley, and the Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA.

3. Department of Physics, University of California, Berkeley, Berkeley, CA 94720, USA.

4. Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA.

5. Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, CA 90095, USA.

6. Department of Materials Science and Engineering, University of California, Los Angeles, Los Angeles, CA 90095, USA.

7. California NanoSystems Institute, University of California, Los Angeles, Los Angeles, CA 90095, USA.

8. Bakar Institute of Digital Materials for the Planet, Division of Computing, Data Science, and Society, University of California, Berkeley, Berkeley, CA 94720, USA.

Abstract

The covalent interaction of N-heterocyclic carbenes (NHCs) with transition metal atoms gives rise to distinctive frontier molecular orbitals (FMOs). These emergent electronic states have spurred the widespread adoption of NHC ligands in chemical catalysis and functional materials. Although formation of carbene-metal complexes in self-assembled monolayers on surfaces has been explored, design and electronic structure characterization of extended low-dimensional NHC-metal lattices remains elusive. Here we demonstrate a modular approach to engineering one-dimensional (1D) metal-organic chains and two-dimensional (2D) Kagome lattices using the FMOs of NHC–Au–NHC junctions to create low-dimensional molecular networks exhibiting intrinsic metallicity. Scanning tunneling spectroscopy and first-principles density functional theory reveal the contribution of C–Au–C π-bonding states to dispersive bands that imbue 1D- and 2D-NHC lattices with exceptionally small work functions.

Publisher

American Association for the Advancement of Science (AAAS)

Link

https://www.science.org/doi/pdf/10.1126/science.adm9814

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