Solvent polarity effect on quality of n-octadecanethiol self-assembled monolayers on copper and oxidized copper

When the part geometry scaling down from macro to microscale level, the size-induced surface effect becomes significant in the injection molding process. The adhesion between polymer and nickel (Ni) mold insert during the process can lead to defects in necking, warping and deformation of microstructure. In this study, the self-assembled monolayers (SAMs) with low surface energy were deposited on the Ni surface to reduce the adhesion and further improve the demolding quality of the microstructure. Results show that the alkyl mercaptan SAMs with chemical bonds and close alignment can be successfully deposited on the surface of Ni by the solution deposition method. The contact angle, surface free energy, and friction coefficient before and after anti-adhesion treatment on the surface of mold insert were measured. In addition, the anti-adhesion properties of different alkyl mercaptan materials and the correspondingly replication quality of microstructure parts after injection molding were analyzed. It is found that the Ni mold insert treated by the perfluorodecanethiol has the best wear resistance and still shows good reproducibility at the 100th demolding cycle.

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Improved Structural Quality of Aromatic Thiol Self-Assembled Monolayers on Au(111) by Microwave Irradiation

Bulletin of the Korean Chemical Society ◽

10.5012/bkcs.2012.33.8.2479 ◽

2012 ◽

Vol 33 (8) ◽

pp. 2479-2480 ◽

Cited By ~ 2

Author(s):

Tae-Sung Park ◽

Hun-Gu Kang ◽

Eisuke Ito ◽

Masahiko Hara ◽

Jae-Geun Noh

Keyword(s):

Microwave Irradiation ◽

Self Assembled Monolayers ◽

Structural Quality ◽

Aromatic Thiol ◽

Assembled Monolayers ◽

Self Assembled

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Effect of time and deposition method on quality of phosphonic acid modifier self-assembled monolayers on indium zinc oxide

Applied Surface Science ◽

10.1016/j.apsusc.2016.06.183 ◽

2016 ◽

Vol 389 ◽

pp. 190-198 ◽

Cited By ~ 6

Author(s):

Lingzi Sang ◽

Kristina M. Knesting ◽

Anuradha Bulusu ◽

Ajaya K. Sigdel ◽

Anthony J. Giordano ◽

...

Keyword(s):

Zinc Oxide ◽

Phosphonic Acid ◽

Self Assembled Monolayers ◽

Deposition Method ◽

Indium Zinc Oxide ◽

Assembled Monolayers ◽

Self Assembled

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Study of the solvent effect on the quality of dodecanethiol self-assembled monolayers on polycrystalline gold

Journal of Electroanalytical Chemistry ◽

10.1016/j.jelechem.2008.07.001 ◽

2008 ◽

Vol 624 (1-2) ◽

pp. 315-322 ◽

Cited By ~ 26

Author(s):

Jianyuan Dai ◽

Zhiguo Li ◽

Jing Jin ◽

Jiongjia Cheng ◽

Jing Kong ◽

...

Keyword(s):

Solvent Effect ◽

Self Assembled Monolayers ◽

Assembled Monolayers ◽

Polycrystalline Gold ◽

Self Assembled

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Importance of the Indium Tin Oxide Substrate on the Quality of Self-Assembled Monolayers Formed from Organophosphonic Acids

Langmuir ◽

10.1021/la104464w ◽

2011 ◽

Vol 27 (6) ◽

pp. 2545-2552 ◽

Cited By ~ 52

Author(s):

Muthukumar Chockalingam ◽

Nadim Darwish ◽

Guillaume Le Saux ◽

J. Justin Gooding

Keyword(s):

Tin Oxide ◽

Indium Tin Oxide ◽

Self Assembled Monolayers ◽

Assembled Monolayers ◽

Oxide Substrate ◽

Indium Tin Oxide Substrate ◽

Self Assembled

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Preparation and Characterization of Self-Assembled Monolayers on Germanium Surfaces

Solid State Phenomena ◽

10.4028/www.scientific.net/ssp.145-146.169 ◽

2009 ◽

Vol 145-146 ◽

pp. 169-172 ◽

Cited By ~ 12

Author(s):

Martin Lommel ◽

Philipp Hönicke ◽

Michael Kolbe ◽

Matthias Müller ◽

Falk Reinhardt ◽

...

Keyword(s):

Surface Passivation ◽

Surface Preparation ◽

Self Assembled Monolayers ◽

Head Groups ◽

Germanium Surface ◽

Assembled Monolayers ◽

Self Assembled ◽

Controlled Preparation

The formation of self-assembled monolayers (SAMs) by specific organic molecules with appropriate anchor groups on semiconductor surfaces may be used to probe the chemical state and quality of the surface or to achieve surface passivation. Molecules with thiol anchor groups are able to bond to hydrogen-terminated germanium surfaces (Ge-S bond). We have prepared SAMs of alkylthiols with different head groups on germanium. Since the surface preparation of germanium is neither well understood nor developed, the controlled preparation of an oxide-free completely H-terminated surface which is a prerequisite for SAM formation of alkylthiols turned out to be a major challenge. Several approaches have been studied. The characterization of the germanium surface prior to and after SAMs formation has been performed by AFM, XPS, Synchrotron-TXRF and -NEXAFS.

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