Layer-by-Layer Epitaxy of Porphyrin-Ligand Fe(II)-Fe(III) Nanoarchitectures for Advanced Metal-Organic Framework Growth

Zishu Wang, Kai Qian, Murat Anil Öner, Peter S. Deimel, Yan Wang, Shuai Zhang, Xiaoxi Zhang, Vishal Gupta, Juan Li, Hong Jun Gao, David A. Duncan, Johannes V. Barth, Xiao Lin, Francesco Allegretti*, Shixuan Du, Carlos Andres Palma*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)

Abstract

Precisely layered molecular heterostructures are promising but still largely unexplored materials, with the potential to complement and enhance the scope of two-dimensional heterostructures. The controlled epitaxial growth of vertically stacked molecular layers connected through tailored linkers, can lead to significant development in the field. Here, we demonstrate that sequential assembly of prototypical iron porphyrins and axial ligands can be steered via temperature-programmed desorption, and monitored by mass spectrometry and by high-resolution atomic force microscopy under ultrahigh vacuum conditions. Complementary photoelectron spectroscopy analysis delivers chemical insight into the formation of layer-by-layer nanoarchitectures. Our temperature-directed methodology outlines a promising strategy for the in vacuo fabrication of precisely stacked, multicomponent (metal-organic) molecular heterostructures.

Original languageEnglish
Pages (from-to)11752-11759
Number of pages8
JournalACS Applied Nano Materials
Volume3
Issue number12
DOIs
Publication statusPublished - 24 Dec 2020

Keywords

  • bottom-up self-assembly
  • directed self-assembly
  • molecular architectures
  • photoemission
  • scanning probe microscopy
  • scanning tunneling microscopy
  • thermal desorption spectroscopy
  • three-dimensional atomically-precise fabrication

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