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Journal articles on the topic 'Self-assembled monolayer'

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Published: 4 June 2021

Last updated: 20 July 2024

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1

Baker, MV, and J. Landau. "Self Assembled Alkanethiolate Monolayers as Thin Insulating Films." Australian Journal of Chemistry 48, no. 6 (1995): 1201. http://dx.doi.org/10.1071/ch9951201.

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Simple devices that contain alkanethiolate monolayers sandwiched between conducting films were prepared by fixing a gold film to the surface of an alkanethiolate monolayer (on a gold substrate) with silver paint. These devices, and similar devices that did not contain alkanethiolate monolayers, were tested as resistors in d.c . circuits. The devices that contained octadecanethiolate monolayers had resistances of approximately 1012 Ω, 10 orders of magnitude higher than the resistance of devices that contained no monolayers. Sulfur- terminated alkanethiolate monolayers were prepared by treatment of carboxylic acid-terminated monolayers with vapours of thionyl chloride followed by vapours of hexane-1,6-dithiol. Attempts to use the sulfur-containing groups at the surface of this monolayer as 'molecular glue' to attach a flexible gold film to the surface of the monolayer were unsuccessful.

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2

Schön, J. H., H. Meng, and Z. Bao. "Self-Assembled Monolayer Transistors." Advanced Materials 14, no. 4 (February 19, 2002): 323–26. http://dx.doi.org/10.1002/1521-4095(20020219)14:4<323::aid-adma323>3.0.co;2-5.

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3

Losic, Dusan, Ken Short, Joe G. Shapter, and Justin J. Gooding. "Atomic Force Microscopy Imaging of Glucose Oxidase using Chemically Modified Tips." Australian Journal of Chemistry 56, no. 10 (2003): 1039. http://dx.doi.org/10.1071/ch03122.

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Atomic force microscopy (AFM) tips have been chemically modified using a variety of approaches mostly based on self-assembled monolayers (SAMs). Tips with both a hydrophobic and hydrophilic nature have been prepared and used to image glucose oxidase covalently attached to a self-assembled monolayer.

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4

Tao, Feng. "Nanoscale surface chemistry in self- and directed-assembly of organic molecules on solid surfaces and synthesis of nanostructured organic architectures." Pure and Applied Chemistry 80, no. 1 (January 1, 2008): 45–57. http://dx.doi.org/10.1351/pac200880010045.

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This article briefly reviews the interplay of weak noncovalent interactions involved in the formation of self-assembled monolayers of organic molecules and the strong chemical binding in directed-assembly of organic molecules on solid surfaces. For a self-assembled monolayer, each molecule involves at least three categories of weak interactions, including molecule-substrate interactions, molecule-molecule interactions in a lamella, and molecule-molecule interactions between two adjacent lamellae. Basically, molecule-substrate interactions play a major role in determining molecular configuration. Molecule-molecule interactions, particularly the interactions of molecular ending functional groups between two adjacent lamellae, such as hydrogen bonds, play a dominant role in determining the molecular packing pattern in a monolayer. These weak interactions may induce or influence molecular chirality. This understanding at the atomic scale allows us to design 2D nanostructured organic materials via precisely manipulating these weak noncovalent interactions. Compared to the self-assembled monolayer formed via weak noncovalent interactions, the structure of directed-assembled monolayer/multilayers formed through strong chemical bonds is significantly dependent on the geometric arrangement and reactivity of active sites on the solid surface. In contrast to the significant role of weak intermolecular interactions in determining molecular packing in a self-assembled monolayer, strong chemical binding between molecules and reactive sites of a substrate plays a major role in determining the molecular packing pattern in a directed-assembly monolayer. Controllable chemical attachment between organic functional groups and reactive sites of the solid surface is crucial for the formation of a highly oriented organic monolayer and the following multilayer.

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5

Chandrashekhar, Channapura Halappa. "Photoswitchable Polysiloxane Self-Assembled Monolayer." International Journal for Research in Applied Science and Engineering Technology 7, no. 7 (July 31, 2019): 350–56. http://dx.doi.org/10.22214/ijraset.2019.7053.

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6

Korolkov, Vladimir V., Stephanie Allen, Clive J. Roberts, and Saul J. B. Tendler. "Subsecond Self-Assembled Monolayer Formation." Journal of Physical Chemistry C 114, no. 45 (October 25, 2010): 19373–77. http://dx.doi.org/10.1021/jp106289p.

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7

Mellott, James M., and Daniel K. Schwartz. "Supercritical Self-Assembled Monolayer Growth." Journal of the American Chemical Society 126, no. 30 (August 2004): 9369–73. http://dx.doi.org/10.1021/ja0489588.

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8

Herr, Brian R., and Chad A. Mirkin. "Self-Assembled Monolayers of Ferrocenylazobenzenes: Monolayer Structure vs Response." Journal of the American Chemical Society 116, no. 3 (February 1994): 1157–58. http://dx.doi.org/10.1021/ja00082a058.

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9

Dickie, Adam J., Ashok K. Kakkar, and Michael A. Whitehead. "Molecular modelling of self-assembled alkynyl monolayer structures Unnatural symmetry units, surface bonding, and topochemical polymerization1." Canadian Journal of Chemistry 81, no. 11 (November 1, 2003): 1228–40. http://dx.doi.org/10.1139/v03-110.

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Geometric modelling techniques are used to map the potential energies of packing for self-assembled alkyl- and phenyl-backboned monolayers across a range of intermolecular separations. Natural packing distances of 4.24.4 Å produce less stable, more isotropic monolayers because of repulsive interchain contacts. Optimizations at unnatural surface densities found thin films of lower energy and higher symmetry existed at increased chainchain separations. Head-group bonding is therefore identified as a force for controlling monolayer order. Analysis of the natural monolayer structures on a silicon dioxide surface determined the favourable head-group structures, and allowed the topochemical polymerization of p-bis(butadiynyl)benzene monolayers to be rationalized.Key words: self-assembled monolayers, molecular modelling studies, repeating symmetry units, thin-film order, topochemical polymerization.

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10

Jadhav, Sushilkumar. "Self-assembled monolayers (SAMs) of carboxylic acids: an overview." Open Chemistry 9, no. 3 (June 1, 2011): 369–78. http://dx.doi.org/10.2478/s11532-011-0024-8.

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AbstractThe field of self-assembled monolayers (SAMs) of organic compounds on different substrates is of importance because it provides a suitable and efficient method of surface modification. The formation of robust, stable monolayers from carboxylic acids on two and three dimensional surfaces of different substrates have been reported. Carboxylic acids are promising class of organic compounds for monolayer formations where traditional alkanethiols or alkoxysilanes show limitations.

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11

Kudernac, Tibor, Natalia Shabelina, Wael Mamdouh, Sigurd Höger, and Steven De Feyter. "STM visualisation of counterions and the effect of charges on self-assembled monolayers of macrocycles." Beilstein Journal of Nanotechnology 2 (October 11, 2011): 674–80. http://dx.doi.org/10.3762/bjnano.2.72.

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Despite their importance in self-assembly processes, the influence of charged counterions on the geometry of self-assembled organic monolayers and their direct localisation within the monolayers has been given little attention. Recently, various examples of self-assembled monolayers composed of charged molecules on surfaces have been reported, but no effort has been made to prove the presence of counterions within the monolayer. Here we show that visualisation and exact localisation of counterions within self-assembled monolayers can be achieved with scanning tunnelling microscopy (STM). The presence of charges on the studied shape-persistent macrocycles is shown to have a profound effect on the self-assembly process at the liquid–solid interface. Furthermore, preferential adsorption was observed for the uncharged analogue of the macrocycle on a surface.

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12

Santiago, Jecksan R., E. Barry Troughton, Richard A. Dennis, and Phillip E. Russell. "Atomic Force Microscopy Studies of Microstructure and Properties of Self Assembled Monolayers." Microscopy and Microanalysis 4, S2 (July 1998): 308–9. http://dx.doi.org/10.1017/s1431927600021668.

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Ex-situ and in-situ studies were performed for self-assembled monolayers (SAMs) formation on mica. The behavior of two surfactants [octadecylphosphonic acid (OPA) and dodecylphosphonic acid (DPA)] in two different solutions [ethanol or tetrahydrofuran (THF)] were studied at different concentrations. A cross section analysis of the monolayer images at partial coverage showed thickness of 1.8 nm, 0.7 nm, and 1.0 nm for OPA, DPA and mixed OPA/DPA, respectively. These values are similar to the ones presented by Xiao and those expected for a monolayer of mixed surfactants as proposed by Whitesides. Since the topography of a monolayer resembles the substrate, the presence of the monolayer at full coverage was determinated by force-distance curve measurements. It was observed that the solvent had the ability to re-dissolve the OPA monolayer, suggesting that the bonding is of a physisorption nature.

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13

Goutev, Nikolay, and Masayuki Futamata. "Attenuated Total Reflection Surface-Enhanced Infrared Absorption Spectroscopy of Carboxyl Terminated Self-Assembled Monolayers on Gold." Applied Spectroscopy 57, no. 5 (May 2003): 506–13. http://dx.doi.org/10.1366/000370203321666506.

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A new recipe for surface-enhanced infrared absorption (SEIRA) active island Au films with improved adhesion in aqueous solution, low resistivity, and enhancement of the infrared (IR) absorption of about 300 was developed. The Au films prepared were utilized in studies of the ionization of self-assembled monolayers of 11-mercaptoundecanoic acid in Na2SO4 aqueous solutions by attenuated total reflection surface-enhanced infrared absorption (ATR-SEIRA) spectroscopy. It was found that the carboxyl end groups of the self-assembled monolayer turn into carboxylate anions on going from anodic to cathodic potentials or from acidic to alkaline pH. The water molecules close to the self-assembled monolayer in acidic solutions or at anodic potentials are preferentially aligned with their dipole moments parallel to the interface. This type of alignment can be ascribed to the dipole–dipole interaction between the carboxyl groups and the water molecules. On the other hand, in alkaline solutions or at cathodic potentials the structure of water close to the self-assembled monolayer is essentially bulk-like, with randomly oriented water molecules. This observation suggests that in alkaline solutions or at cathodic potentials the charge of the carboxylate anions is almost completely compensated for by strongly adsorbed counter cations. As a result, the electric field close to the surface of the ionized self-assembled monolayer is weak and has little influence on the orientation and hydrogen bonding of the water molecules.

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14

Seelenbinder, John A., Chris W. Brown, and Daniel W. Urish. "Self-Assembled Monolayers of Thiophenol on Gold as a Novel Substrate for Surface-Enhanced Infrared Absorption." Applied Spectroscopy 54, no. 3 (March 2000): 366–70. http://dx.doi.org/10.1366/0003702001949645.

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A unique method of obtaining surface-enhanced infrared absorption (SEIRA) spectra for chemicals that will not chemically attach to a metal surface has been investigated. Surface enhancements are greatest for molecules that bind to metals. In order to achieve greater enhancement for those analytes that do not bind to SEIRA metals, we have investigated self-assembled monolayers as a means of linking analytes to a gold substrate. Monolayers of thiophenol were formed onto sputter-coated gold–silicon substrates. Analytes were deposited onto the thiophenol-coated gold–silicon wafers, and external reflection SEIRA spectra were then measured. Enhancement factors as high as 30-fold compared to those for conventional SEIRA substrates are demonstrated. The self-assembled monolayers on gold substrates are shown to change both relative intensities and band positions of the adsorbed analyte. These intensity changes and frequency shifts show strong interaction of selected analytes with the self-assembled monolayer. This study of phthalates and nitrosubstituted aromatic compounds demonstrates the usefulness of the technique. Spectral changes evident through the use of the thiophenol monolayer are discussed.

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15

Reese, R. Scott, and Marye Anne Fox. "Spectral and cyclic voltammetric characterization of self-assembled monolayers on gold of pyrene end-labeled oligonucleotide duplexes." Canadian Journal of Chemistry 77, no. 5-6 (June 1, 1999): 1077–84. http://dx.doi.org/10.1139/v99-098.

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Self-assembled monolayers of sulfur-terminated oligonucleotide duplexes were formed on flat gold surfaces, either by exposure of a self-assembled monolayer bearing one oligonucleotide strand to the complementary strand or by preformation of a oligonucleotide duplex that was then deposited on a fresh gold surface. Virtually identical spectral behavior was observed whether the duplex was produced before deposition or by in situ complementary association. With a duplex bearing an appropriate pyrene end-label, the resulting thin film was photoresponsive. Surface emission measurements show no evidence for pyrene aggregation on the modified surfaces. The polarity of the photocurrent, reflecting photoinduced electron transfer initiated by photoexcitation of pyrene, is opposite that expected from the oligonucleotide-mediated reduction of the appended pyrene excited state.Key words: oligonucleotide, self-assembled monolayer, duplex formation, photoelectrochemistry, surface emission.

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16

Carson, George A., and Steve Granick. "Self-assembly of octadecyltrichlorosilane monolayers on mica." Journal of Materials Research 5, no. 8 (August 1990): 1745–51. http://dx.doi.org/10.1557/jmr.1990.1745.

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A method is described to deposit a securely attached, self-assembled monolayer of octadecyltrichlorosilane (OTS) on the surface of freshly cleaved muscovite mica. Comparison of the infrared methylene spectra with those of closely packed Langmuir-Blodgett films implies that the surface coverage of the OTS films was a fraction 0.8–0.9 that of films formed by Langmuir-Blodgett (LB) methods. However, LB monolayers are less securely attached to the substrate. The contact angle of water on these self-assembled monolayers remained over 100° for over 24 h and it suffered no noticeable degradation after prolonged reflux in cyclohexane. The method to form an OTS monolayer on mica involves three steps; first, ion exchange of the native K+ ions of cleaved mica for H+ ions; second, control of the quantity of resulting water on the mica surface; third, adsorption and surface polymerization of octadecyltrichlorosilane (OTS) by self-assembly from dilute cyclohexane solution.

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17

Wakamatsu, Satoshi, Jun-ichi Nakada, Shintaro Fujii, Uichi Akiba, and Masamichi Fujihira. "Self-assembled nanostructure of Au nanoparticles on a self-assembled monolayer." Ultramicroscopy 105, no. 1-4 (November 2005): 26–31. http://dx.doi.org/10.1016/j.ultramic.2005.06.014.

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18

Brothers, Michael C., David Moore, Michael St. Lawrence, Jonathan Harris, Ronald M. Joseph, Erin Ratcliff, Oscar N. Ruiz, Nicholas Glavin, and Steve S. Kim. "Impact of Self-Assembled Monolayer Design and Electrochemical Factors on Impedance-Based Biosensing." Sensors 20, no. 8 (April 16, 2020): 2246. http://dx.doi.org/10.3390/s20082246.

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Real-time sensing of proteins, especially in wearable devices, remains a substantial challenge due to the need to convert a binding event into a measurable signal that is compatible with the chosen analytical instrumentation. Impedance spectroscopy enables real-time detection via either measuring electrostatic interactions or electron transfer reactions while simultaneously being amenable to miniaturization for integration into wearable form-factors. To create a more robust methodology for optimizing impedance-based sensors, additional fundamental studies exploring components influencing the design and implementation of these sensors are needed. This investigation addresses a sub-set of these issues by combining optical and electrochemical characterization to validate impedance-based sensor performance as a function of (1) biorecognition element density, (2) self-assembled monolayer chain length, (3) self-assembled monolayer charge density, (4) the electrochemical sensing mechanism and (5) the redox reporter selection. Using a pre-existing lysozyme aptamer and lysozyme analyte combination, we demonstrate a number of design criteria to advance the state-of-the-art in protein sensing. For this model system we demonstrated the following: First, denser self-assembled monolayers yielded substantially improved sensing results. Second, self-assembled monolayer composition, including both thickness and charge density, changed the observed peak position and peak current. Third, single frequency measurements, while less informative, can be optimized to replace multi-frequency measurements and in some cases (such as that with zwitterionic self-assembled monolayers) are preferred. Finally, various redox reporters traditionally not used in impedance sensing should be further explored. Collectively, these results can help limit bottlenecks associated with device development, enabling realization of next-generation impedance-based biosensing with customize sensor design for the specific application.

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19

Aslam, M., N. K. Chaki, Jadab Sharma, and K. Vijayamohanan. "Device applications of self-assembled monolayers and monolayer-protected nanoclusters." Current Applied Physics 3, no. 2-3 (April 2003): 115–27. http://dx.doi.org/10.1016/s1567-1739(02)00180-3.

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20

Koo, Ja-Ryong, Sang-Woo Pyo, Jun-Ho Kim, Hyun-Koo Lee, and Young Kwan Kim. "Self Assembled Monolayer for Molecular Electronics." Japanese Journal of Applied Physics 44, no. 1B (January 24, 2005): 566–69. http://dx.doi.org/10.1143/jjap.44.566.

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21

Bounichou, Matthieu, Olivier Alévêque, Tony Breton, Marylène Dias, Lionel Sanguinet, Eric Levillain, and David Rondeau. "Self-assembled monolayer-assisted mass spectrometry." Journal of Materials Chemistry 19, no. 43 (2009): 8032. http://dx.doi.org/10.1039/b904175n.

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22

Mu, Xiaoyan, Aiting Gao, Dehui Wang, and Peng Yang. "Self-Assembled Monolayer-Assisted Negative Lithography." Langmuir 31, no. 9 (February 27, 2015): 2922–30. http://dx.doi.org/10.1021/la504516e.

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23

Stolarczyk, Elżbieta, Katarzyna Sidoryk, Marcin Cybulski, Marek Kubiszewski, and Krzysztof Stolarczyk. "Design of Therapeutic Self-Assembled Monolayers of Thiolated Abiraterone." Nanomaterials 8, no. 12 (December 7, 2018): 1018. http://dx.doi.org/10.3390/nano8121018.

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The aim of our work was to synthetize of a new analogue of abiraterone—thiolated abiraterone (HS-AB) and design a gold surface monolayer, bearing in mind recent advances in tuning monolayer structures and using them as efficient drug delivery systems. Therapeutic self-assembled monolayers (TSAMs) were prepared by chemically attaching HS-AB to gold surfaces. Their properties were studied by voltammetry and atomic force microscopy (AFM). A gold electrode with immobilized thioglycolic acid (HS-GA) was used for comparison. The surface concentration of HS-AB on the gold surface was 0.572 nmol/cm2, determined from the area of the voltammetric reduction peaks (desorption process). The area per one molecule estimated from the voltammetry experiments was 0.291 nmol/cm2. The capacity of thus prepared electrode was also tested. The calculated capacity for the HS-AB modified electrode is 2.90 μF/cm2. The obtained value indicates that the monolayer on the gold electrode is quite well ordered and well-packed. AFM images show the formation of gold nanoparticles as a result of immersing the HS-AB modified gold electrode in an aqueous solution containing 1 mM HAuCl4·3H2O. These structures arise as a result of the interaction between the HS-AB compound adsorbed on the electrode and the AuCl4− ions. The voltammetric experiments also confirm the formation of gold structures with specific catalytic properties in the process of oxygen reduction.

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24

Chang, Chia-Chi, Toyoko Imae, Liang-Yih Chen, and Masaki Ujihara. "Efficient surface enhanced Raman scattering on confeito-like gold nanoparticle-adsorbed self-assembled monolayers." Physical Chemistry Chemical Physics 17, no. 48 (2015): 32328–34. http://dx.doi.org/10.1039/c5cp05490g.

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Confeito-like gold nanoparticles adsorbed on the self-assembled monolayer hierarchy of dendrimer/polystyrene spheres can strongly enhance Raman scattering, being superior to those on the self-assembled monolayer of 3-aminopropyltriethoxysilane.

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25

Jee, Seung-Hyun, Soo-Ho Kim, Jae-Hwan Ko, and Young-Soo Yoon. "Work Function Increase of ITO Modified by Self Assembled Monolayer for Organic Electrical Devices." Journal of the Korean Institute of Electrical and Electronic Material Engineers 19, no. 6 (June 1, 2006): 563–67. http://dx.doi.org/10.4313/jkem.2006.19.6.563.

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26

Taglietti, Angelo, Giacomo Dacarro, Daniele Barbieri, Lucia Cucca, Pietro Grisoli, Maddalena Patrini, Carla Renata Arciola, and Piersandro Pallavicini. "High Bactericidal Self-Assembled Nano-Monolayer of Silver Sulfadiazine on Hydroxylated Material Surfaces." Materials 12, no. 17 (August 28, 2019): 2761. http://dx.doi.org/10.3390/ma12172761.

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Anti-infective surfaces are a modern strategy to address the issue of infection related to the clinical use of materials for implants and medical devices. Nanocoatings, with their high surface/mass ratio, lend themselves to being mono-layered on the material surfaces to release antibacterial molecules and prevent bacterial adhesion. Here, a “layer-by-layer” (LbL) approach to achieve a self-assembled monolayer (SAM) with high microbicidal effect on hydroxylated surfaces is presented, exploiting the reaction between a monolayer of thiolic functions on glass/quartz surfaces and a newly synthesized derivative of the well-known antibacterial compound silver sulfadiazine. Using several different techniques, it is demonstrated that a nano-monolayer of silver sulfadiazine is formed on the surfaces. The surface-functionalized materials showed efficient bactericidal effect against both Gram-positive and Gram-negative bacteria. Interestingly, bactericidal self-assembled nano-monolayers of silver sulfadiazine could be achieved on a large variety of materials by simply pre-depositing glass-like SiO2 films on their surfaces.

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27

Yan, Yan, Ye Zhou, Long-Biao Huang, Su-Ting Han, Li Zhou, Zong-Xiang Xu, and V. A. L. Roy. "Enhanced self-assembled monolayer treatment on polymeric gate dielectrics with ultraviolet/ozone assistance in organic thin film transistors." RSC Advances 5, no. 79 (2015): 64471–77. http://dx.doi.org/10.1039/c5ra13246k.

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Chemical vapor deposition (CVD) is utilized to form self-assembled monolayers on polymeric insulators. Ultraviolet/ozone (UVO) treatment is used to enhance the alignment of HMDS monolayer on polymeric insulator surface and a time dependent effect is observed for UVO.

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28

Breton, Gary W. "1-[2,6-Dimethyl-4-(pent-4-yn-1-yloxy)phenyl]-4-phenyl-1,2,4-triazolidine-3,5-dione." Molbank 2023, no. 1 (February 4, 2023): M1578. http://dx.doi.org/10.3390/m1578.

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Urazolyl radicals are a class of persistent nitrogen-centered radicals. In a previous work, we successfully formed self-assembled monolayers of substituted urazolyl radicals on gold surfaces. To extend the scope of these investigations, we sought to form a self-assembled monolayer using a urazolyl radical species that we knew existed predominantly in the dimerized N-N form instead of existing predominantly as free N-centered radical species, as had previously been investigated. We successfully synthesized the precursor urazole compound needed to generate the desired urazolyl radical, and completely characterized its structure. Most importantly, it was determined that the alkyne functional group that is needed to adhere to the gold surface remained intact. Unfortunately, however, we only obtained ambiguous results from attempts at forming self-assembled monolayers of this species on gold.

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29

KRATOCHVÍLOVÁ, IRENA, ADRIANA ZAMBOVA, JEREMIAH MBINDYO, BAHARAK RAZAVI, and JOSEF HOLAKOVSKÝ. "CURRENT-VOLTAGE CHARACTERIZATION OF ALKANETHIOL SELF-ASSEMBLED MONOLAYERS IN METAL NANOWIRES." Modern Physics Letters B 16, no. 05n06 (March 10, 2002): 161–69. http://dx.doi.org/10.1142/s0217984902003609.

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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.

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30

KONGKANAND, Anusorn, and Susumu KUWABATA. "Preparation of Pt Monolayer Islands Using Self-assembled Monolayer Technique." Electrochemistry 72, no. 6 (June 5, 2004): 412–14. http://dx.doi.org/10.5796/electrochemistry.72.412.

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31

Wang, Zhen, Yan-Li Shi, and Hu-Lin Li. "Investigation of two-component mixed self-assembled monolayers on gold." Canadian Journal of Chemistry 79, no. 3 (March 1, 2001): 328–36. http://dx.doi.org/10.1139/v01-022.

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Two-component mixed self-assembled monolayers (SAMs) composed of 2-mercapto-5-methyl-1,3,4-oxadiazole (MMO) and 1-dodecanethiol (C12SH) in various molar percentages were prepared on gold surfaces by self-assembly. X-ray photoelectron spectroscopy (XPS) and wettability results gave evidence that the coverage of MMO was controlled by the composition of MMO in the assembling solution. The monolayer coverage and apparent rate constant of the redox active probes in solution of different molar ratios of mixed SAMs could be calculated using impedance measurements. The cyclic voltammetry reveals that the probes are selectively passed through the mixed SAMs depending upon their properties.Key words: self-assembled monolayers (SAMs), X-ray photoelectron spectroscopy (XPS), electrochemistry, electrochemical impedance analysis.

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32

Wang, Yue Hui. "Large-Area Self-Assembled Monolayer of Silica Microspheres by Convective Assembly." Key Engineering Materials 609-610 (April 2014): 479–82. http://dx.doi.org/10.4028/www.scientific.net/kem.609-610.479.

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We reported here a convective assembly process for the formation of large-area self-assembled monolayers of silica microspheres on silicon and glass substrates. Uniformly coated monolayers of silica spheres were achieved on silicon wafers with and without coated SiN2 of 3 inch of diameter and large glass substrate of 6 × 6 in2 in size. The coating of large-area uniform monolayers of silica microspheres was characterized with scanning electron microscopy and optical microscopy. The mechanism of the convective assembly has been explained by the convective flux that is generated by capillary immersion force caused from the solution evaporation and hydrodynamic drag force. The patterns of silica microspheres were transferred to the silicon substrates using a deep reactive ion etching technique. It is found that textured silicon reduced the reflectance of silicon substrate from 52.2% to 33.2% around 400 nm and from 33.9% to 19.5% around 1,100 nm. The rapid self-assembled monolayer with silica microspheres provided a glimpse at the wide range of coating and photonic device applications where convective assembly can be used.

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33

Kumar, Sowmya M., Parvathi K. Balakrishnan, Chethan Hedge, and Shilpa Dandekeri. "Self-Assembled Monolayer- A Nano Surface Modification." Journal of Evolution of Medical and Dental Sciences 9, no. 20 (May 18, 2020): 1608–12. http://dx.doi.org/10.14260/jemds/2020/351.

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34

Miller, Johanna L. "A new kind of self-assembled monolayer." Physics Today 67, no. 6 (June 2014): 20–21. http://dx.doi.org/10.1063/pt.3.2406.

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35

Zhou, C., M. R. Deshpande, M. A. Reed, L. Jones, and J. M. Tour. "Nanoscale metal/self-assembled monolayer/metal heterostructures." Applied Physics Letters 71, no. 5 (August 4, 1997): 611–13. http://dx.doi.org/10.1063/1.120195.

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36

Rozenfeld, O., Y. Koltypin, H. Bamnolker, S. Margel, and A. Gedanken. "Self-Assembled Monolayer Coatings on Amorphous Iron." Langmuir 10, no. 11 (November 1994): 3919–21. http://dx.doi.org/10.1021/la00023a001.

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37

Schön, Jan Hendrik, Hong Meng, and Zhenan Bao. "Self-assembled monolayer organic field-effect transistors." Nature 413, no. 6857 (October 18, 2001): 713–16. http://dx.doi.org/10.1038/35099520.

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38

Le Liepvre, Sylvain, Ping Du, David Kreher, Fabrice Mathevet, André-Jean Attias, Céline Fiorini-Debuisschert, Ludovic Douillard, and Fabrice Charra. "Fluorescent Self-Assembled Molecular Monolayer on Graphene." ACS Photonics 3, no. 12 (December 7, 2016): 2291–96. http://dx.doi.org/10.1021/acsphotonics.6b00793.

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Chinwangso, Pawilai, Andrew C. Jamison, and T. Randall Lee. "Multidentate Adsorbates for Self-Assembled Monolayer Films." Accounts of Chemical Research 44, no. 7 (July 19, 2011): 511–19. http://dx.doi.org/10.1021/ar200020s.

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Shin, Chong Kyu, Hoosung Lee, Changsoo Jung, Doseok Kim, and Bum Ku Rhee. "Self-Assembled Polythiophene Monolayer on Gold Surface." Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals 349, no. 1 (September 2000): 167–70. http://dx.doi.org/10.1080/10587250008024891.

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Nakamura, Fumio, Keita Mitsui, Tomohide Murase, Kazutoshi Kobayashi, Masahiko Hara, Wolfgang Knoll, and Hiroyuki Sasabe. "Immobilization of DNA on Self-Assembled Monolayer." Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals 349, no. 1 (September 2000): 219–22. http://dx.doi.org/10.1080/10587250008024904.

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42

Woodward, J. T., and D. K. Schwartz. "In SituObservation of Self-Assembled Monolayer Growth." Journal of the American Chemical Society 118, no. 33 (January 1996): 7861–62. http://dx.doi.org/10.1021/ja961524v.

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Lin, Yu-Pu, Oualid Ourdjini, Luca Giovanelli, Sylvain Clair, Thomas Faury, Younal Ksari, Jean-Marc Themlin, Louis Porte, and Mathieu Abel. "Self-Assembled Melamine Monolayer on Cu(111)." Journal of Physical Chemistry C 117, no. 19 (May 7, 2013): 9895–902. http://dx.doi.org/10.1021/jp401496s.

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44

Nováková, Zuzana, Renáta Oriňáková, Andrea Straková Fedorková, and Andrej Oriňák. "Electrochemical study of self-assembled monolayer adsorption." Journal of Solid State Electrochemistry 18, no. 8 (March 26, 2014): 2289–95. http://dx.doi.org/10.1007/s10008-014-2455-6.

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Ion, Ana, Vassilia Partali, Hans-Richard Sliwka, and Florinel Gabriel Banica. "Electrochemistry of a carotenoid self-assembled monolayer." Electrochemistry Communications 4, no. 9 (September 2002): 674–78. http://dx.doi.org/10.1016/s1388-2481(02)00430-7.

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46

Jennane, Jamila, Tanya Boutros, and Richard Giasson. "Photolithography of self-assembled monolayers: optimization of protecting groups by an electroanalytical method." Canadian Journal of Chemistry 74, no. 12 (December 1, 1996): 2509–17. http://dx.doi.org/10.1139/v96-281.

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Abstract:

Patterned surfaces presenting a high density of chemically reactive functional groups can be prepared through photolithography of self-assembled monolayers (SAM). In this paper, we report the synthesis and the evaluation of three reagents that can be used in SAM-photolithographic applications. These reagents are made up of a triethoxysilylpropylamine moiety in which the amine is temporarily blocked by photolabile protecting groups: NVOC (o-nitroveratryloxycarbonyl), ONB (o-nitrobenzyl), or DDZ (α,α-dimethyl-3,5-dimethoxybenzyloxycarbonyl). The presence of the triethoxysilyl group allows self-assembled monolayer formation. Release of chemically reactive amino groups is achieved by irradiation of the surface. An electroanalytical method was developed and used to monitor and optimize the three steps of the methodology occurring on surfaces: monolayer formation, photodeprotection, and subsequent functionalization of the released amino groups. Quantitative information on the efficiency of the photodeprotection step was obtained by this method. It was found that the DDZ group is superior to the ONB and NVOC photolabile protecting groups for SAM-photolithographic applications. Percentages of liberated amino groups are generally above 50% with the DDZ group, while they are generally inferior to 25% and 2% for NVOC and ONB, respectively. These differences are attributed to the destruction of some of the released amino groups through a subsequent reaction with the photoproduct, o-nitrosobenzaldehyde for ONB and 3,4-dimethoxy-6-nitrosobenzaldehyde for NVOC, and to partial loss or destruction of the monolayer during prolonged irradiations. Key words: self-assembled monolayers, surface modification, photolithography, photolabile protecting groups, cyclic voltammetry.

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Hinckley, Adam P., and Anthony J. Muscat. "Wet Chemical Cleaning of Organosilane Monolayers." Solid State Phenomena 314 (February 2021): 54–59. http://dx.doi.org/10.4028/www.scientific.net/ssp.314.54.

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Thin organic self-assembled monolayer films are used to promote adhesion and seal the pores of metal oxides as well as direct the deposition of layers on patterned surfaces. Defects occur as the self-assembled monolayer forms, and the number and type of defects depend on surface preparation, deposition solvent, temperature, time and other parameters. Particles commonly deposit during organosilane self-assembly on metal oxide surfaces. The particles are defects because they are prone to react in subsequent processing, which may not be desirable if the organosilane serves as a pore sealant or passivation layer. Cleaning the organosilane by solvent extraction to remove non-polar agglomerates followed by an aqueous mixture of ammonium hydroxide and hydrogen peroxide, which is Standard Clean 1, a common particle removal step for silicon surfaces, produced monolayers with few agglomerates based on atomic force microscopy without etching the layer. The combined cleaning sequence contained fewer particles than separate cleaning steps, showing that the cleans removed particles with different compositions. The thickness and contact angle of cleaned monolayers was comparable to those made using a costlier solvent.

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Zhang, Bo, Tomas Mikysek, Veronika Cicmancova, Stanislav Slang, Roman Svoboda, Petr Kutalek, and Tomas Wagner. "2D GeSe2 amorphous monolayer." Pure and Applied Chemistry 91, no. 11 (November 26, 2019): 1787–96. http://dx.doi.org/10.1515/pac-2019-0501.

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Abstract In this paper, GeSe2 thin film and glass ingot were prepared in a layered structure. Subsequently, the 2D amorphous monolayers were achieved from layered thin film and layered glass ingot. The thicknesses of monolayers from thin film range from 1.5 nm to 5 nm. And the thickness of monolayer from glass ingot is 7 μm. The fast cooling of material results in the formation of self-assembled monolayers. In the case of thin film, layers are connected with “bridge”. After doping of Ag, the precipitation of nano particles exfoliates the adjacent monolayers which can be further dispersed by etching of Ag particles. In the case of glass ingot, the composition changes at 1 % between adjacent monolayers, according to EDX (energy-dispersive X-ray spectroscopy) spectra. And the glass 2D monolayer can be mechanically peeled off from the glass ingot.

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Park, Jun Hyung, Buyng Su Park, Gu Huh, Seung Hyun Lee, Hyun Sook Lee, Il Hoon Cho, Se Hwan Paek, and Hai Won Lee. "Specific Immobilization of Streptavidin on Mixed Self-Assembled Monolayers as Mixing Ratio." Solid State Phenomena 121-123 (March 2007): 495–98. http://dx.doi.org/10.4028/www.scientific.net/ssp.121-123.495.

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We report on the distribution of mixed self-assembled monolayers (SAMs) composed of biotinylated and diluent alkylthiolates for streptavidin immobilization. Two thiol derivatives, 11-mercapto-1-undecanol (MUOH) and 11-mercaptoundecanoic-(8-biotinylamido-3,6-dioxaoctyl) amide (MBDA), were employed for mixed SAM. These thiols formed self-assembled monolayer without local domain, and streptavidins were immobilized onto biotinylated gold surface without nonspecific binding. In order to find the optimized condition of immobilization of streptavidin, we controlled the mixing ratio of two kind thiols by colorimetric detection assay, and the immobilization was characterized by atomic force microscopy (AFM), scanning tunneling microscopy (STM), and ellipsometer.

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Sardar, Rajesh, Christopher A. Beasley, and Royce W. Murray. "Ferrocenated Au Nanoparticle Monolayer Adsorption on Self-Assembled Monolayer-Coated Electrodes." Analytical Chemistry 81, no. 16 (August 15, 2009): 6960–65. http://dx.doi.org/10.1021/ac9010364.

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