Metal/Self-Assembled Monolayer/Metal Junctions for Magnetoelectronic Applications.

2002 ◽  
Vol 746 ◽  
Author(s):  
Y. A. Ovchenkov ◽  
Chunjuan Zhang ◽  
J. Redepenning ◽  
B. Doudin

ABSTRACTMetal/organic self-assembled monolayer/metal junctions were investigated for junction areas 10-2 to 102 μm2. Several types and thickness of monolayers are investigated, and magnetic electrodes were made. Electroless deposition was used to make the top metal without disrupting the organic film. This deposition is activated with Pd clusters obtained by evaporation or by chemical reduction of a Pd-based catalyst. This method allows us to obtain a high yield of junctions that are not electrically shorted and are mechanically and electrically stable over a wide temperature range. Low-temperatures investigations reveal strong non-linearity in the IV curves and an increase of resistance with decreasing temperature. Zero bias anomalies observed at low temperatures are attributed to a Coulomb blockade associated with the Pd clusters.

2021 ◽  
Author(s):  
Purna Chandra Rao ◽  
Prabu Mani ◽  
Younghu Son ◽  
Jiyun Kim ◽  
Minyoung Yoon

Correction for ‘Organic guest molecule induced ultrafast breathing of an epitaxially grown metal–organic framework on a self-assembled monolayer’ by Purna Chandra Rao et al., Chem. Commun., 2021, DOI: 10.1039/d1cc03721h.


The Analyst ◽  
2019 ◽  
Vol 144 (11) ◽  
pp. 3539-3545 ◽  
Author(s):  
Jiehua Ma ◽  
Wenxin Chai ◽  
Jianyang Lu ◽  
Tian Tian ◽  
Shuai Wu ◽  
...  

The relatively poor stability of DNA self-assembled monolayers (SAMs) greatly limits their use in real applications. A new strategy is reported to protect the DNA SAMs by using a metal organic framework (MOF)-based exoskeleton.


2019 ◽  
Vol 21 (21) ◽  
pp. 10992-11003 ◽  
Author(s):  
Peter S. Deimel ◽  
Peter Feulner ◽  
Johannes V. Barth ◽  
Francesco Allegretti

A self-assembled monolayer of 4-fluorothiophenol serves as a thermally removable spacer to decouple adsorbed metal–organic complexes from a Ag(111) support.


2019 ◽  
Vol 3 (4) ◽  
pp. 636-639 ◽  
Author(s):  
Esther Frederick ◽  
Travis W. Shaw ◽  
Matthew G. Frith ◽  
Steven L. Bernasek

Carbene based self-assembled monolayers are demonstrated to be effective supports for forming highly stable surface-mounted metal–organic frameworks on gold substrates.


2013 ◽  
Vol 4 ◽  
pp. 638-648 ◽  
Author(s):  
Tatjana Ladnorg ◽  
Alexander Welle ◽  
Stefan Heißler ◽  
Christof Wöll ◽  
Hartmut Gliemann

Surface anchored metal-organic frameworks, SURMOFs, are highly porous materials, which can be grown on modified substrates as highly oriented, crystalline coatings by a quasi-epitaxial layer-by-layer method (liquid-phase epitaxy, or LPE). The chemical termination of the supporting substrate is crucial, because the most convenient method for substrate modification is the formation of a suitable self-assembled monolayer. The choice of a particular SAM also allows for control over the orientation of the SURMOF. Here, we demonstrate for the first time the site-selective growth of the SURMOF HKUST-1 on thiol-based self-assembled monolayers patterned by the nanografting technique, with an atomic force microscope as a structuring tool. Two different approaches were applied: The first one is based on 3-mercaptopropionic acid molecules which are grafted in a 1-decanethiolate SAM, which serves as a matrix for this nanolithography. The second approach uses 16-mercaptohexadecanoic acid, which is grafted in a matrix of an 1-octadecanethiolate SAM. In both cases a site-selective growth of the SURMOF is observed. In the latter case the roughness of the HKUST-1 is found to be significantly higher than for the 1-mercaptopropionic acid. The successful grafting process was verified by time-of-flight secondary ion mass spectrometry and atomic force microscopy. The SURMOF structures grown via LPE were investigated and characterized by atomic force microscopy and Fourier-transform infrared microscopy.


2002 ◽  
Vol 16 (05n06) ◽  
pp. 161-169 ◽  
Author(s):  
IRENA KRATOCHVÍLOVÁ ◽  
ADRIANA ZAMBOVA ◽  
JEREMIAH MBINDYO ◽  
BAHARAK RAZAVI ◽  
JOSEF HOLAKOVSKÝ

An electric-field assisted assembly has been used to place rod-shaped, metal-organic, molecule-metal nanowires onto lithographically defined metal pads allowing the electrical characterization of metal-molecule self-assembled monolayer-metal containing nanowires. Our results show that the parameters of metal-molecule metal junctions are close to previously published data, so we have constructed systems containing insulating monolayers with reasonable properties.


2021 ◽  
Author(s):  
Purna Chandra Rao ◽  
Mani Prabu ◽  
Younghu Son ◽  
Jiyun Kim ◽  
Minyoung Yoon

We report epitaxially grown new two-dimensional metal-organic framework (MOF) thin films on self-assembled monolayer (SAM). We fabricated these epitaxial thin-films using the stepwise layer-by-layer seeding followed by solvothermal treatment. The...


2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Joel M. Fruhman ◽  
Hippolyte P.A.G. Astier ◽  
Bruno Ehrler ◽  
Marcus L. Böhm ◽  
Lissa F. L. Eyre ◽  
...  

AbstractIt is challenging for conventional top-down lithography to fabricate reproducible devices very close to atomic dimensions, whereas identical molecules and very similar nanoparticles can be made bottom-up in large quantities, and can be self-assembled on surfaces. The challenge is to fabricate electrical contacts to many such small objects at the same time, so that nanocrystals and molecules can be incorporated into conventional integrated circuits. Here, we report a scalable method for contacting a self-assembled monolayer of nanoparticles with a single layer of graphene. This produces single-electron effects, in the form of a Coulomb staircase, with a yield of 87 ± 13% in device areas ranging from < 800 nm2 to 16 μm2, containing up to 650,000 nanoparticles. Our technique offers scalable assembly of ultra-high densities of functional particles or molecules that could be used in electronic integrated circuits, as memories, switches, sensors or thermoelectric generators.


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