Category: 143-10-2

On March 3, 2021, Han, Yunrui; Han, Lin; He, Limin; Wang, Shipeng; Luo, Xiaoming published an article.Related Products of 143-10-2 The title of the article was Universal Criterion for Critical Motion of Droplets Adhered on Surfaces with Different Wettability in Laminar Flow. And the article contained the following:

The initial motion of micro-oil droplets on substrates immersed in water is of great significance to study droplet motion. Here, microscopic experiments and mechanism anal. are used to establish a universal criterion and a math. model describing the critical conditions for the initial motion of droplets adhered on surfaces with different wettability in the laminar flow. The authors demonstrate a surface modification technique and anal. method in a microtest. Based on the force’s anal. on the 3-phase contact points of 2-dimensional oil droplets on the surfaces, the movement mechanism is also obtained when the oil droplets start to move. This work focuses on the coupling effects of oil droplet’s height, surface properties, and water flow velocity on the initial motion behaviors of oil droplets and obtains the critical shear water flow velocity required for the critical movement of oil droplets from different surfaces. The authors achieve a universal criterion and model for different application scenarios, which are of great scientific significance to improve theor. systems of multiphase separation and guide the design and optimization of surface properties and flow field velocity. The experimental process involved the reaction of 1-Decanethiol(cas: 143-10-2).Related Products of 143-10-2

The Article related to critical motion droplet surface wettability laminar flow silicone oil, Surface Chemistry and Colloids: Solid-Liquid Systems and other aspects.Related Products of 143-10-2

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On November 30, 2021, Carlson, Shane; Becker, Maximilian; Bruenig, Florian N.; Ataka, Kenichi; Cruz, Ruben; Yu, Leixiao; Tang, Peng; Kanduc, Matej; Haag, Rainer; Heberle, Joachim; Makki, Hesam; Netz, Roland R. published an article.Quality Control of 1-Decanethiol The title of the article was Hydrophobicity of Self-Assembled Monolayers of Alkanes: Fluorination, Density, Roughness, and Lennard-Jones Cutoffs. And the article contained the following:

The interplay of fluorination and structure of alkane self-assembled monolayers and how these affect hydrophobicity are explored via mol. dynamics simulations, contact angle goniometry, and surface-enhanced IR absorption spectroscopy. Wetting coefficients are found to grow linearly in the monolayer d. for both alkane and perfluoroalkane monolayers. The larger contact angles of monolayers of perfluorinated alkanes are shown to be primarily caused by their larger mol. volume, which leads to a larger nearest-neighbor grafting distance and smaller tilt angle. Increasing the Lennard-Jones force cutoff in simulations is found to increase hydrophilicity. Specifically, wetting coefficients scale like the inverse square of the cutoff, and when extrapolated to the infinite cutoff limit, they yield contact angles that compare favorably to exptl. values. Nanoscale roughness is also found to reliably increase monolayer hydrophobicity, mostly via the reduction of the entropic part of the work of adhesion. Anal. of depletion lengths shows that droplets on nanorough surfaces partially penetrate the surface, intermediate between Wenzel and Cassie-Baxter states. The experimental process involved the reaction of 1-Decanethiol(cas: 143-10-2).Quality Control of 1-Decanethiol

The Article related to fluorination roughness hydrophobicity self assembled monolayer alkane, Surface Chemistry and Colloids: Solid-Liquid Systems and other aspects.Quality Control of 1-Decanethiol

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On July 29, 2020, Ben Amara, Fadwa; Dionne, Eric R.; Kassir, Sahar; Pellerin, Christian; Badia, Antonella published an article.Quality Control of 1-Decanethiol The title of the article was Molecular Origin of the Odd-Even Effect of Macroscopic Properties of n-Alkanethiolate Self-Assembled Monolayers: Bulk or Interface?. And the article contained the following:

Elucidating the influence of the monolayer interface vs. bulk on the macroscopic properties (e.g., surface hydrophobicity, charge transport, and electron transfer) of organic self-assembled monolayers (SAMs) chem. anchored to metal surfaces is a challenge. This article reports the characterization of prototypical SAMs of n-alkanethiolates on gold (CH3(CH2)nSAu, n = 6-19) at the macroscopic scale by electrochem. impedance spectroscopy and contact angle goniometry, and at the mol. level, by IR reflection absorption spectroscopy. The SAM capacitance, dielec. constant, and surface hydrophobicity exhibit dependencies on both the length (n) and parity (nodd or neven) of the polymethylene chain. The peak positions of the CH2 stretching modes indicate a progressive increase in the chain conformational order with increasing n between n = 6 and 16. SAMs of nodd have a greater degree of structural gauche defects than SAMs of neven. The peak intensities and positions of the CH3 stretching modes are chain length independent but show an odd-even alternation of the spatial orientation of the terminal CH3. The correlations between the different data trends establish that the chain length dependencies of the dielec. constant and surface hydrophobicity originate from changes in the polymethylene chain conformation (bulk), while the odd-even variation arises primarily from a difference in the chem. composition of the interface related to the terminal group orientation. These findings provide new phys. insights into the structure-property relation of SAMs for the design of ultrathin film dielecs. as well as the understanding of stereostructural effects on the elec. characteristics of tunnel junctions. The experimental process involved the reaction of 1-Decanethiol(cas: 143-10-2).Quality Control of 1-Decanethiol

The Article related to self assembled monolayer alkanethiolate gold structure property, Surface Chemistry and Colloids: Solid-Liquid Systems and other aspects.Quality Control of 1-Decanethiol

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On October 27, 2020, Tsvetanova, Martina; Oldenkotte, Valent J. S.; Bertolino, M. Candelaria; Gao, Yuqiang; Siekman, Martin H.; Huskens, Jurriaan; Zandvliet, Harold J. W.; Sotthewes, Kai published an article.Name: 1-Decanethiol The title of the article was Nanoscale Work Function Contrast Induced by Decanethiol Self-Assembled Monolayers on Au(111). And the article contained the following:

In this paper, we obtain maps of the spatial tunnel barrier variations in self-assembled monolayers of organosulfurs on Au(111). Maps down to the sub-nanometer scale are obtained by combining topog. scanning tunneling microscopy images with dI/dz spectroscopy. The square root of the tunnel barrier height is directly proportional to the local work function and the dI/dz signal. We use ratios of the tunnel barriers to study the work function contrast in various decanethiol phases: the lying-down striped β phase, the dense standing-up φ phase, and the oxidized decanesulfonate λ phase. We compare the induced work function variations too: the work function contrast induced by a lying-down striped phase in comparison to the modulation induced by the standing-up φ phase, as well as the oxidized λ phase. By performing these comparisons, we can account for the similarities and differences in the effects of the mechanisms acting on the surface and extract valuable insights into mol. binding to the substrate. The pillow effect, governing the lowering of the work function due to lying-down mol. tails in the striped low d. phases, seems to have quite a similar contribution as the surface dipole effect emerging in the dense standing-up decanethiol phases. The dI/dz spectroscopy map of the nonoxidized β phase compared to the map of the oxidized λ phase indicates that the strong binding of mols. to the substrate is no longer present in the latter. The experimental process involved the reaction of 1-Decanethiol(cas: 143-10-2).Name: 1-Decanethiol

The Article related to decanethiol self assembled monolayer work function gold, Surface Chemistry and Colloids: Solid-Liquid Systems and other aspects.Name: 1-Decanethiol

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On April 15, 2021, Wang, Zhaojie; Wang, Siqi; Liu, Zhang; Zhou, Binze; Wen, Yanwei; Lu, Zizhe; Chen, Rong; Shan, Bin published an article.COA of Formula: C10H22S The title of the article was Bonding behavior and passivation mechanism of organic ligands (-SH, -NH2, -COOH) on ZnS (1010) surface from first-principles calculations. And the article contained the following:

Ligand design is an important aspect of the surface engineering on the quantum dots. Organic ligands with three types of widely used function groups (-SH, -NH2, -COOH) are chosen to investigate the bonding behavior and electronic properties modification on ZnS (1010) based on first-principles calculations The thermodn. studies of (1010) ligands suggest that -SH and -COOH are prone to undergo a proton dissociation when binding on the surface, while -NH2 remains mol. adsorption on the 2-coordinated Zn atom. The binding strengths of these ligands exhibits the order of -SH > -COOH > -NH2, which is consistent with their ligand exchange ability in experiments The gap states of ZnS (1010) mainly come from 2-coordinated S/Zn, and the passivation effect of -NH2 ligand is inferior to the other two due to the absence of dissociated H which covers the 2-coordinated S. The change of ligand structures shows that ligand length has slight influence on the binding energies, while branched ligands bind more strongly on the surface than those linear ones with the same number of carbon atoms. As for the surface vacancies that cause severe trap states, the ligands tend to be located at bridge sites between two 2-coordinated Zn rather than filling the vacancies. Our study provides an insight into the bonding behavior and passivation mechanism of typical ligands on II-VI QDs at the at. level and gives helpful guidance for surface engineering aimed at improving QD performance. The experimental process involved the reaction of 1-Decanethiol(cas: 143-10-2).COA of Formula: C10H22S

The Article related to zinc sulfide selenide surface passivation adsorption, Surface Chemistry and Colloids: Solid-Liquid Systems and other aspects.COA of Formula: C10H22S

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On April 7, 2020, Tie, Lu; Zhao, Siyang; Guo, Zhiguang; Li, Jing published an article.Recommanded Product: 1-Decanethiol The title of the article was Fine Switching between Underwater Superoleophilicity and Underwater Superoleophobicity while Maintaining Superhydrophobicity. And the article contained the following:

Switching between superhydrophobicity/underwater superoleophilicity and superhydrophilicity/underwater superoleophobicity has been widely designed. Recently, superwettability is subdivided into multiple extreme wetting states for oil, water, and air as wetting and medium phases. However, fine switching among the multiple superwettability is rare. Here, a pH-responsive case is presented to demonstrate the fine switching between underwater superoleophilicity and underwater superoleophobicity while maintaining superhydrophobicity. The surface chem. of silver-roughened copper coatings is elaborately manipulated by water-repellent perfluoroalkyl and alkyl chains and the smart terminal carboxyl group. By adjusting the pH value of water, the completely opposite extreme wetting states for oil in water are precisely controlled. Simultaneously, the extreme repellence for water in the air can be kept owing to the fairly low surface energy of the perfluoroalkyl chain. This discovery accelerates the subdivision of superwettability and the achievement of unusual superwetting switching. The experimental process involved the reaction of 1-Decanethiol(cas: 143-10-2).Recommanded Product: 1-Decanethiol

The Article related to oleophilicity oleophobicity superhydrophobicity, Surface Chemistry and Colloids: Solid-Liquid Systems and other aspects.Recommanded Product: 1-Decanethiol

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On April 12, 2022, Singh, Himanshu; Sharma, Sumit published an article.Recommanded Product: 1-Decanethiol The title of the article was Determination of Equilibrium Adsorbed Morphologies of Surfactants at Metal-Water Interfaces Using a Modified Umbrella Sampling-Based Methodology. And the article contained the following:

Surfactants adsorb to metal-water interfaces in various morphologies, including self-assembled monolayers (SAMs), cylindrical and spherical micelles or hemimicelles. Current mol. simulation methods are unable to efficiently sample the formation of these morphologies because of the large diffusive/energetic barriers. We introduce a modified umbrella sampling-based methodol. that allows sampling of these morphologies from any initial configuration and provides free energy differences between them. Using this methodol., we have studied adsorption behavior of cationic [quaternary ammonium (quat) of 4 and 12 carbon long alkyl tails], uncharged [decanethiol], and anionic [phosphate monoester] surfactants and their mixtures at a gold-water interface. We find that while Coulombic repulsion between the charged head groups of quat-4 limits their adsorption to a sparse layer, stronger hydrophobic interactions between the alkyl tails of quat-12 promote adsorption resulting in a morphol. with adsorbed hemispherical micelles sitting atop a monolayer. Decanethiol mols. adsorb in a densely packed bilayer with the mols. standing-up on the surface in the first layer and lying parallel to the surface in the second layer. Cationic and anionic surfactant mixtures display a synergistic adsorption behavior. These results elucidate the role of mol. characteristics in dictating the nature of adsorbed morphologies of surfactants at metal-water interfaces. The experimental process involved the reaction of 1-Decanethiol(cas: 143-10-2).Recommanded Product: 1-Decanethiol

The Article related to surfactant adsorption liquid solid interface, Surface Chemistry and Colloids: Solid-Liquid Systems and other aspects.Recommanded Product: 1-Decanethiol

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On December 5, 2020, Shumbula, Ndivhuwo P.; Ndala, Zakhele B.; Nkabinde, Siyabonga S.; Kolokoto, Tshwarela; Shumbula, Poslet M.; Mdluli, Phumlani S.; Hlatshwayo, Thulani; Mlambo, Mbuso; Moloto, Nosipho published an article.Name: 1-Decanethiol The title of the article was Experimental and theoretical studies of 1-alkanethiols SAMs of various chain-lengths on gold nanoparticles and their effect on SERS, stability and surface properties. And the article contained the following:

1-Alkanethiol SAMs on AuNPs have shown great potential towards the development of new functional materials. This is mainly due to the formation of dense, tightly bonded and well-ordered systems on the surface of AuNPs. This work showcases how the chain-length of 1-alkanethiols affects the stability and surface properties of AuNPs and the SERS effect. Using exptl. and theor. studies (by means of DFT), this work shows the interaction between 1-alkanethiols of 3 different chain-lengths and AuNPs. The effects on the optical properties, surface charge, stability and SERS were also investigated. The red shift of surface plasmon resonance band was observed as a result of the interaction between AuNPs and 1-alkanethioals. The Zeta potential indicated a strong electrostatic repulsion between AuNPs which was reduced after functionalizing with 1-alkanethiols. The long chain alkanethiol was found to strongly reduce the surface charge due to strong interaction with AuNPs. The calculated nucleophilic center cross-sections for all alkanethiols were found to increase with the chain-length, indicating a strong interaction existed between long chain alkanethiol and AuNPs. The SERS data shows an increase in Raman intensities of all 1-alkanethiols adsorbed on the surface of AuNPs. Both the exptl. and theor. data shows that the alkanethiol with short chain-length possesses the strongest Raman signal enhancement. The experimental process involved the reaction of 1-Decanethiol(cas: 143-10-2).Name: 1-Decanethiol

The Article related to gold thiol nanoparticle monolayer sers, Surface Chemistry and Colloids: Solid-Liquid Systems and other aspects.Name: 1-Decanethiol

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On February 9, 2021, Bhadra, Pratiti; Siu, Shirley W. I. published an article.Formula: C10H22S The title of the article was Effect of Concentration, Chain Length, Hydrophobicity, and an External Electric Field on the Growth of Mixed Alkanethiol Self-Assembled Monolayers: A Molecular Dynamics Study. And the article contained the following:

Growing functionalized self-assembled monolayers (SAMs) with fewer defects and lower cost is the focus of ongoing investigations. In the present study, mol. dynamics simulations were performed to investigate the process of SAM formation on a gold substrate from mixed alkanethiolates in ethanol solution Using the mixed-SAM system of 11-mercaptoundecanoic acid (MUA) with either 1-decanethiol (C9CH3) or 6-mercaptohexanol (C6OH) in a 3:7 ratio as the standard SAM model, we systematically investigated the effects of the concentration, chain length, functional group, and an external elec. field on SAM growth. The results showed that the initial growth rate and surface coverage of the SAM are dependent on the ligand concentration At a certain high concentration (about 1.2-1.5 times the min. concentration), the final surface coverage is optimal. Reducing the chain length and increasing the proportion of hydrophobic diluting mols. are effective ways to improve the surface coverage, but the compositional ligands have to be changed, which may not be desirable for the functional requirements of SAMs. Furthermore, by investigating the behavior of the alkanethiolates and ethanol solvent under an applied external field, we find that a strong elec. field with a proper field direction can facilitate the generation of defect-free monolayers. These findings will contribute to the understanding of mixed-SAM formation and provide insight into exptl. design for efficient and effective SAM formation. The experimental process involved the reaction of 1-Decanethiol(cas: 143-10-2).Formula: C10H22S

The Article related to hydrophobicity alkanethiol self assembled monolayer md simulation, external elec field concentration, Surface Chemistry and Colloids: Solid-Liquid Systems and other aspects.Formula: C10H22S

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On April 14, 2020, Girard, Henri-Louis; Bourrianne, Philippe; Chen, Dayong; Jaishankar, Aditya; Vreeland, Jessica L.; Cohen, Robert E.; Varanasi, Kripa K.; McKinley, Gareth H. published an article.Formula: C10H22S The title of the article was Asphaltene Adsorption on Functionalized Solids. And the article contained the following:

Asphaltenes, heavy aromatic components of crude oil, are known to adsorb on surfaces and can lead to pipe clogging or hinder oil recovery. Because of their multicomponent structure, the details of their interactions with surfaces are complex. We investigate the effect of the physicochem. properties of the substrate on the extent and mechanism of this adsorption. Using wetting measurements, we relate the initial kinetics of deposition to the interfacial energy of the surface. We then quantify the long-term adsorption dynamics using a quartz crystal microbalance and ellipsometry. Finally, we investigate the mechanism and morphol. of adsorption with force spectroscopy measurements as a function of surface chem. We determine different adsorption regimes differing in orientation, packing d., and initial kinetics on different substrate functionalizations. Specifically, we find that alkane substrates delay the initial monolayer formation, fluorinated surfaces exhibit fast adsorption but low bonding strength, and hydroxyl substrates lead to a different adsorption orientation and a high packing d. of the asphaltene layer. The experimental process involved the reaction of 1-Decanethiol(cas: 143-10-2).Formula: C10H22S

The Article related to asphaltene adsorption solid functionalized silicon gold hydroxyl alkane fluorinated, Surface Chemistry and Colloids: Solid-Liquid Systems and other aspects.Formula: C10H22S

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