On‐surface Synthesis of a Semiconducting 2D Metal–Organic Framework Cu₃(C₆O₆) Exhibiting Dispersive Electronic Bands

Abstract

A2 Dm etal-organic framework (2D-MOF) was formed on aCu(111) substrate using benzenehexol molecules. By means of acombination of scanning tunneling microscopy and spectroscopy, X-rayp hotoelectron spectroscopya nd density-functional theory,t he structure of the 2D-MOF is determined to be Cu 3 (C 6 O 6 ), which is stabilized by O-Cu-O bonding motifs.W efind that upon adsorption on Cu(111), the 2D-MOF features asemiconductor band structure with adirect band gap of 1.5 eV.The O-Cu-O bonds offer efficient charge delocalization, which gives rise to ah ighly dispersive conduction band with an effective mass of 0.45 m e at the band bottom, implying ahigh electron mobility in this material. Scheme 1. On-surfacesynthesis of single layer of 2D-MOF Cu 3 (C 6 O 6 ).Supportinginformation and the ORCID identification number(s) for the author(s) of this article can be found under: https://doi.

Interplay of structural dynamics and electronic effects in an engineered assembly of pentacene in a metal–organic framework

“…[21][22][23][24][25][26] Originally developed for applications in gas storage and separation, MOF-based materials have found interest also with regard to other application elds, based on properties like large electrical conductivities 27 of the order of 10 3 S m À1 , room temperature charge carrier mobility 28 as large as 220 cm 2 V À1 s À1 , and other interesting properties like thermal activated delayed uorescence, 29 emphasizing the emergent nature of MOF-based optoelectronic materials. [30][31][32][33] In the present work, we demonstrate the potential of the MOF-based approach to create structurally-controlled 1D OSCs based on Pn. The ditopic linker required for MOF synthesis was fabricated by attaching two phenylcarboxylate groups to the Pn (Scheme 1 and Fig.…”

Hierarchical nanosheets built from superatomic clusters: properties, exfoliation and single-crystal-to-single-crystal intercalation

“…8 layers). Examples of bottom-up assembled 2D materials that could be exfoliated or prepared as few or mono-layers primarily include organic 58,59 or hybrid [60][61][62] reticular frameworks. However, 2D clusterassembled materials-attractive for their promise of function programmability-that have been successfully exfoliated are exceedingly scarce.…”

Synthesis and Local Probe Gating of a Monolayer Metal‐Organic Framework

“…Despite the vast number of reports on 3D, bulk MOFs, synthesis and characterization of 2D, single layer MOFs are much more limited. [1][2][3] Intrinsic 2D MOFs are expected to attract increasing attention since they are anticipated to possess exotic electronic properties, such as high electrical conductivity, [4][5][6][7][8] superconductivity, [9,10] topologically non-trivial band structure, [11][12][13][14][15][16][17] halfmetallic ferromagnetism, [18][19][20][21] and quantum spin liquids. [22] To isolate their intrinsic electronic properties from the substrate, synthesis of 2D MOFs on inert surfaces, such as graphene, other van der Waals layered materials, and bulk insulators, is highly desired.…”