scholarly journals Nanoscale patterning of self-assembled monolayer (SAM)-functionalised substrates with single molecule contact printing

Nanoscale ◽  
2017 ◽  
Vol 9 (39) ◽  
pp. 15098-15106 ◽  
Author(s):  
M. Sajfutdinow ◽  
K. Uhlig ◽  
A. Prager ◽  
C. Schneider ◽  
B. Abel ◽  
...  
Keyword(s):  
Single Molecule ◽  
Dna Origami ◽  
Gold Films ◽  
Self Assembled Monolayer ◽  
Contact Printing ◽  
Nanoscale Patterning ◽  
Self Assembled

DNA origami stamps print biomolecules onto SAM-coated gold filmsviabioconjugation in a process called single molecule contact printing.

The dynamic behaviour of a single molecule inserted in a self-assembled monolayer matrix at low temperature

2004 ◽  
Vol 15 (4) ◽  
pp. S137-S141 ◽  
Author(s):  
Satoshi Wakamatsu ◽  
Shintaro Fujii ◽  
Uichi Akiba ◽  
Masamichi Fujihira
Keyword(s):  
Low Temperature ◽  
Single Molecule ◽  
Dynamic Behaviour ◽  
Self Assembled Monolayer ◽  
Self Assembled

scholarly journals MPTMS self-assembled monolayer deposition for ultra-thin gold films for plasmonics

2018 ◽  
Vol 2 (3) ◽  
pp. 035005 ◽  
Author(s):  
Pushkar K Gothe ◽  
Dhruv Gaur ◽  
Venu Gopal Achanta
Keyword(s):  
Gold Films ◽  
Self Assembled Monolayer ◽  
Self Assembled

Photochemical Patterning of a Self-Assembled Monolayer of 7-Diazomethylcarbonyl-2,4,9-trithiaadmantane on Gold Films via Wolff Rearrangement

Langmuir ◽  
2004 ◽  
Vol 20 (12) ◽  
pp. 4933-4938 ◽  
Author(s):  
Jun Hu ◽  
Yubiao Liu ◽  
Chalermchai Khemtong ◽  
Jouliana M. El Khoury ◽  
Timothy J. McAfoos ◽  
...  
Keyword(s):  
Gold Films ◽  
Self Assembled Monolayer ◽  
Wolff Rearrangement ◽  
Self Assembled

scholarly journals Nanoscale patterning of a self-assembled monolayer by modification of the molecule–substrate bond

2014 ◽  
Vol 5 ◽  
pp. 258-267 ◽  
Author(s):  
Cai Shen ◽  
Manfred Buck
Keyword(s):  
Structural Phase ◽  
Lateral Diffusion ◽  
Scanning Tunneling ◽  
Self Assembled Monolayer ◽  
Nanoscale Patterning ◽  
Interfacial Structures ◽  
Self Assembled ◽  
The Difference ◽  
20 Nm ◽  
Induced Defects

The intercalation of Cu at the interface of a self-assembled monolayer (SAM) and a Au(111)/mica substrate by underpotential deposition (UPD) is studied as a means of high resolution patterning. A SAM of 2-(4'-methylbiphenyl-4-yl)ethanethiol (BP2) prepared in a structural phase that renders the Au substrate completely passive against Cu-UPD, is patterned by modification with the tip of a scanning tunneling microscope. The tip-induced defects act as nucleation sites for Cu-UPD. The lateral diffusion of the metal at the SAM–substrate interface and, thus, the pattern dimensions are controlled by the deposition time. Patterning down to the sub-20 nm range is demonstrated. The difference in strength between the S–Au and S–Cu bond is harnessed to develop the latent Cu-UPD image into a patterned binary SAM. Demonstrated by the exchange of BP2 by adamantanethiol (AdSH) this is accomplished by a sequence of reductive desorption of BP2 in Cu free areas followed by adsorption of AdSH. The appearance of Au adatom islands upon the thiol exchange suggests that the interfacial structures of BP2 and AdSH SAMs are different.

scholarly journals Raman Enhancement of Nanoparticle Dimers Self-Assembled Using DNA Origami Nanotriangles

Molecules ◽  
2021 ◽  
Vol 26 (6) ◽  
pp. 1684
Author(s):  
Sergio Kogikoski ◽  
Kosti Tapio ◽  
Robert Edler von Zander ◽  
Peter Saalfrank ◽  
Ilko Bald
Keyword(s):  
Raman Scattering ◽  
Single Molecule ◽  
Resonance Effect ◽  
Field Enhancement ◽  
Surface Enhanced Raman Scattering ◽  
Dna Origami ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering ◽  
Self Assembled

Surface-enhanced Raman scattering is a powerful approach to detect molecules at very low concentrations, even up to the single-molecule level. One important aspect of the materials used in such a technique is how much the signal is intensified, quantified by the enhancement factor (EF). Herein we obtained the EFs for gold nanoparticle dimers of 60 and 80 nm diameter, respectively, self-assembled using DNA origami nanotriangles. Cy5 and TAMRA were used as surface-enhanced Raman scattering (SERS) probes, which enable the observation of individual nanoparticles and dimers. EF distributions are determined at four distinct wavelengths based on the measurements of around 1000 individual dimer structures. The obtained results show that the EFs for the dimeric assemblies follow a log-normal distribution and are in the range of 106 at 633 nm and that the contribution of the molecular resonance effect to the EF is around 2, also showing that the plasmonic resonance is the main source of the observed signal. To support our studies, FDTD simulations of the nanoparticle’s electromagnetic field enhancement has been carried out, as well as calculations of the resonance Raman spectra of the dyes using DFT. We observe a very close agreement between the experimental EF distribution and the simulated values.

Highly-ordered self-assembled monolayer of alkanethiol on thermally annealed polycrystalline gold films

2014 ◽  
Vol 428 ◽  
pp. 105-110 ◽  
Author(s):  
Young-Kyu Hong ◽  
Hyunung Yu ◽  
Tae Geol Lee ◽  
Noah Lee ◽  
Jae Ho Bahng ◽  
...  
Keyword(s):  
Gold Films ◽  
Self Assembled Monolayer ◽  
Polycrystalline Gold ◽  
Self Assembled
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