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Sypabekova M, Hagemann A, Rho D, Kim S. Review: 3-Aminopropyltriethoxysilane (APTES) Deposition Methods on Oxide Surfaces in Solution and Vapor Phases for Biosensing Applications. BIOSENSORS 2022; 13:bios13010036. [PMID: 36671871 PMCID: PMC9856095 DOI: 10.3390/bios13010036] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2022] [Revised: 12/19/2022] [Accepted: 12/23/2022] [Indexed: 05/31/2023]
Abstract
Surface functionalization and bioreceptor immobilization are critical processes in developing a highly sensitive and selective biosensor. The silanization process with 3-aminopropyltriethoxysilane (APTES) on oxide surfaces is frequently used for surface functionalization because of beneficial characteristics such as its bifunctional nature and low cost. Optimizing the deposition process of the APTES layer to obtain a monolayer is crucial to having a stable surface and effectively immobilizing the bioreceptors, which leads to the improved repeatability and sensitivity of the biosensor. This review provides an overview of APTES deposition methods, categorized into the solution-phase and vapor-phase, and a comprehensive summary and guide for creating stable APTES monolayers on oxide surfaces for biosensing applications. A brief explanation of APTES is introduced, and the APTES deposition methods with their pre/post-treatments and characterization results are discussed. Lastly, APTES deposition methods on nanoparticles used for biosensors are briefly described.
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Affiliation(s)
- Marzhan Sypabekova
- Department of Electrical & Computer Engineering, Baylor University, Waco, TX 76798, USA
| | - Aidan Hagemann
- Department of Electrical & Computer Engineering, Baylor University, Waco, TX 76798, USA
| | - Donggee Rho
- Center for Nano Bio Development, National NanoFab Center (NNFC), Daejeon 34141, Republic of Korea
| | - Seunghyun Kim
- Department of Electrical & Computer Engineering, Baylor University, Waco, TX 76798, USA
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Lützenkirchen J, Scharnweber T, Ho T, Striolo A, Sulpizi M, Abdelmonem A. A set-up for simultaneous measurement of second harmonic generation and streaming potential and some test applications. J Colloid Interface Sci 2018; 529:294-305. [DOI: 10.1016/j.jcis.2018.06.017] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Revised: 05/28/2018] [Accepted: 06/06/2018] [Indexed: 10/28/2022]
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3
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Al-Gharabli S, Kujawa J, Mavukkandy MO, Arafat HA. Functional groups docking on PVDF membranes: Novel Piranha approach. Eur Polym J 2017. [DOI: 10.1016/j.eurpolymj.2017.09.029] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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Sandner T, Steinbach AM, Knittel P, Diemant T, Behm RJ, Strehle S, Kranz C, Mizaikoff B. Silanization of Sapphire Surfaces for Optical Sensing Applications. ACS Sens 2017; 2:522-530. [PMID: 28723185 DOI: 10.1021/acssensors.6b00786] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Well-characterized silane layers are essential for optimized attachment of (bio)molecules enabling reliable chem/biosensor performance. Herein, binding properties and orientation of 3-mercaptopropyltrimethoxysilane layers at crystalline sapphire (0001) surfaces were determined by water contact angle measurements, infrared reflection absorption spectroscopy, atomic force microscopy, and X-ray photoelectron spectroscopy. Infrared reflection absorption spectroscopy measurements suggest an almost perpendicular arrangement of the MPTMS molecules to the substrate surface. Adhesion force studies between a silicon nitride AFM tip and modified sapphire, gold, and silicon dioxide substrates were investigated by peak force tapping atomic force microscopy and used to define the silane binding properties on these surfaces. As expected, the Al-O-Si bond was determined to be responsible for the layer formation at the sapphire substrate surface.
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Affiliation(s)
- Tanja Sandner
- Institute
of Analytical and Bioanalytical Chemistry, Ulm University, Albert-Einstein-Allee 11, D-89081 Ulm, Germany
| | - Annina M. Steinbach
- Institute
of Electron Devices and Circuits, Ulm University, Albert-Einstein-Allee 45, D-89081 Ulm, Germany
| | - Peter Knittel
- Institute
of Analytical and Bioanalytical Chemistry, Ulm University, Albert-Einstein-Allee 11, D-89081 Ulm, Germany
| | - Thomas Diemant
- Institute
of Surface Chemistry and Catalysis, Ulm University, Albert-Einstein-Allee 47, D-89081 Ulm, Germany
| | - R. Jürgen Behm
- Institute
of Surface Chemistry and Catalysis, Ulm University, Albert-Einstein-Allee 47, D-89081 Ulm, Germany
| | - Steffen Strehle
- Institute
of Electron Devices and Circuits, Ulm University, Albert-Einstein-Allee 45, D-89081 Ulm, Germany
| | - Christine Kranz
- Institute
of Analytical and Bioanalytical Chemistry, Ulm University, Albert-Einstein-Allee 11, D-89081 Ulm, Germany
| | - Boris Mizaikoff
- Institute
of Analytical and Bioanalytical Chemistry, Ulm University, Albert-Einstein-Allee 11, D-89081 Ulm, Germany
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Steinrück HG, Magerl A, Deutsch M, Ocko BM. Pseudorotational epitaxy of self-assembled octadecyltrichlorosilane monolayers on sapphire (0001). PHYSICAL REVIEW LETTERS 2014; 113:156101. [PMID: 25375723 DOI: 10.1103/physrevlett.113.156101] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2014] [Indexed: 06/04/2023]
Abstract
The structure of octadecyltrichlorosilane self-assembled monolayers (SAMs) on sapphire (0001) was studied by Å-resolution surface-specific x-ray scattering methods. The monolayer was found to consist of three sublayers where the outermost layer corresponds to vertically oriented, closely packed alkyl tails. Laterally, the monolayer is hexagonally packed and exhibits pseudorotational epitaxy to the sapphire, manifested by a broad scattering peak at zero relative azimuthal rotation, with long powderlike tails. The lattice mismatch of ∼ 1%-3% to the sapphire's and the different length scale introduced by the lateral Si-O-Si bonding prohibit positional epitaxy. However, the substrate induces an intriguing increase in the crystalline coherence length of the SAM's powderlike crystallites when rotationally aligned with the sapphire's lattice. The increase correlates well with the rotational dependence of the separation of corresponding substrate-monolayer lattice sites.
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Affiliation(s)
- H-G Steinrück
- Crystallography and Structural Physics, University of Erlangen-Nürnberg, 91058 Erlangen, Germany
| | - A Magerl
- Crystallography and Structural Physics, University of Erlangen-Nürnberg, 91058 Erlangen, Germany
| | - M Deutsch
- Physics Department and Institute of Nanotechnology, Bar-Ilan University, Ramat-Gan 52900, Israel
| | - B M Ocko
- Condensed Matter Physics and Materials Science Department, Brookhaven National Lab, Upton, New York 11973, USA
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Pujari SP, Scheres L, Marcelis ATM, Zuilhof H. Covalent Surface Modification of Oxide Surfaces. Angew Chem Int Ed Engl 2014; 53:6322-56. [DOI: 10.1002/anie.201306709] [Citation(s) in RCA: 583] [Impact Index Per Article: 58.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2013] [Indexed: 12/26/2022]
Affiliation(s)
- Sidharam P. Pujari
- Laboratory of Organic Chemistry, Wageningen University, P.O. Box 26, 6703 HB Wageningen (The Netherlands)
| | - Luc Scheres
- Surfix B.V. Dreijenplein 8, 6703 HB Wageningen (The Netherlands)
| | - Antonius T. M. Marcelis
- Laboratory of Organic Chemistry, Wageningen University, P.O. Box 26, 6703 HB Wageningen (The Netherlands)
| | - Han Zuilhof
- Laboratory of Organic Chemistry, Wageningen University, P.O. Box 26, 6703 HB Wageningen (The Netherlands)
- Department of Chemical and Materials Engineering, King Abdulaziz University, Jeddah (Saudi Arabia)
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Pujari SP, Scheres L, Marcelis ATM, Zuilhof H. Kovalente Oberflächenmodifikationen von Oxiden. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201306709] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Sidharam P. Pujari
- Laboratory of Organic Chemistry, Wageningen University, P.O. Box 26, 6703 HB Wageningen (Niederlande)
| | | | - Antonius T. M. Marcelis
- Laboratory of Organic Chemistry, Wageningen University, P.O. Box 26, 6703 HB Wageningen (Niederlande)
| | - Han Zuilhof
- Laboratory of Organic Chemistry, Wageningen University, P.O. Box 26, 6703 HB Wageningen (Niederlande)
- Department of Chemical and Materials Engineering, King Abdulaziz University, Jeddah (Saudi‐Arabien)
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Altman SM, Dixit N, Simon SI. Detection of bidirectional signaling during integrin activation and neutrophil adhesion. Methods Mol Biol 2014; 1124:235-48. [PMID: 24504956 DOI: 10.1007/978-1-62703-845-4_15] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Neutrophil arrest and migration on inflamed endothelium is dependent upon a conformational shift in CD11a/CD18 (LFA-1) from a low to high affinity and clustered state which determines the strength and lifetime of bond formation with intracellular adhesion molecule 1 (ICAM-1). Cytoskeletal adaptor proteins kindlin-3 and talin-1 anchor clustered LFA-1 to the cytoskeleton and support the transition from neutrophil rolling to arrest. We employ microfluidic flow channels and total internal reflection fluorescence microscopy to evaluate the spatiotemporal regulation of LFA-1 affinity and bond formation that facilitate the transition from neutrophil rolling to arrest. Methodology is presented to correlate the relationship between integrin conformation, bond formation with ICAM-1, and cytoskeletal engagement and adhesion strengthening necessary to achieve a migratory phenotype.
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Affiliation(s)
- Stuart M Altman
- Department of Biomedical Engineering, University of California, Davis, CA, USA
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Belgardt C, Sowade E, Blaudeck T, Baumgärtel T, Graaf H, von Borczyskowski C, Baumann RR. Inkjet printing as a tool for the patterned deposition of octadecylsiloxane monolayers on silicon oxide surfaces. Phys Chem Chem Phys 2013; 15:7494-504. [DOI: 10.1039/c3cp50331c] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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10
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Dixit N, Kim MH, Rossaint J, Yamayoshi I, Zarbock A, Simon SI. Leukocyte function antigen-1, kindlin-3, and calcium flux orchestrate neutrophil recruitment during inflammation. THE JOURNAL OF IMMUNOLOGY 2012; 189:5954-64. [PMID: 23144497 DOI: 10.4049/jimmunol.1201638] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Neutrophil arrest and migration on inflamed endothelium involves a conformational shift in CD11a/CD18 (leukocyte function antigen-1; LFA-1) to a high-affinity and clustered state that determines the strength and lifetime of bond formation with ICAM-1. Cytoskeletal adapter proteins Kindlin-3 and Talin-1 anchor clustered LFA-1 to the cytoskeleton and facilitate the transition from neutrophil rolling to arrest. We recently reported that tensile force acts on LFA-1 bonds inducing their colocalization with Orai1, the predominant membrane store operated Ca(2+) channel that cooperates with the endoplasmic reticulum to elicit cytosolic flux. Because Kindlin-3 was recently reported to initiate LFA-1 clustering in lymphocytes, we hypothesized that it cooperates with Orai1 and LFA-1 in signaling local Ca(2+) flux necessary for shear-resistant neutrophil arrest. Using microfluidic flow channels combined with total internal reflection fluorescence microscopy, we applied defined shear stress to low- or high-affinity LFA-1 and imaged the spatiotemporal regulation of bond formation with Kindlin-3 recruitment and Ca(2+) influx. Orai1 and Kindlin-3 genes were silenced in neutrophil-like HL-60 cells to assess their respective roles in this process. Kindlin-3 was enriched within focal clusters of high-affinity LFA-1, which promoted physical linkage with Orai1. This macromolecular complex functioned to amplify inside-out Ca(2+) signaling in response to IL-8 stimulation by catalyzing an increased density of Talin-1 and consolidating LFA-1 clusters within sites of contact with ICAM-1. In this manner, neutrophils use focal adhesions as mechanosensors that convert shear stress-mediated tensile force into local bursts of Ca(2+) influx that catalyze cytoskeletal engagement and an adhesion-strengthened migratory phenotype.
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Affiliation(s)
- Neha Dixit
- Department of Biomedical Engineering, University of California, Davis, Davis, CA 95616, USA
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Yildirim O, Yilmaz MD, Reinhoudt DN, Blank DHA, Rijnders G, Huskens J. Electrochemical stability of self-assembled alkylphosphate monolayers on conducting metal oxides. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:9890-9894. [PMID: 21744865 DOI: 10.1021/la200925v] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Alkylphosphate self-assembled monolayers (SAMs) were prepared on Nb-doped SrTiO(3) (Nb-STO) conducting metal oxide substrates. Unlike thiols on gold, the alkylphosphate SAMs on Nb-STO exhibited an electrochemical stability over a wide voltage range from -2 to 2 V. Cyclic voltammetry showed that the SAM modification inhibited the electrochemical activity of the underlying conducting substrate with an efficiency dependent on the chain length. Impedance spectroscopy showed that SAM-modified Nb-STO substrates have a significantly higher resistance than bare substrates.
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Affiliation(s)
- Oktay Yildirim
- Inorganic Materials Science, MESA+ Institute for Nanotechnology, University of Twente, P.O. Box 217, 7500 AE, Enschede, The Netherlands
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12
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Dixit N, Yamayoshi I, Nazarian A, Simon SI. Migrational guidance of neutrophils is mechanotransduced via high-affinity LFA-1 and calcium flux. THE JOURNAL OF IMMUNOLOGY 2011; 187:472-81. [PMID: 21632714 DOI: 10.4049/jimmunol.1004197] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Acute inflammation triggers the innate immune response of neutrophils that efficiently traffic from the bloodstream to concentrate at high numbers at the site of tissue infection or wounding. A gatekeeper in this process is activation of β(2) integrins, which form bond clusters with ICAM-1 on the endothelial surface. These bond clusters serve dual functions of providing adhesive strength to anchor neutrophils under the shear forces of blood flow and directional guidance for cell polarization and subsequent transmigration on inflamed endothelium. We hypothesized that shear forces transmitted through high-affinity LFA-1 facilitates the cooperation with the calcium release-activated channel Orai1 in directing localized cytoskeletal activation and directed migration. By using vascular mimetic microfluidic channels, we observed neutrophil arrest on a substrate of either ICAM-1 or allosteric Abs that stabilize a high- or low-affinity conformation of LFA-1. Neutrophils captured via low-affinity LFA-1 did not exhibit intracellular calcium flux, F-actin polymerization, cell polarization, or directional migration under shear flow. In contrast, high-affinity LFA-1 provided orientation along a uropod-pseudopod axis that required calcium flux through Orai1. We demonstrate how the shear stress of blood flow can transduce distinct outside-in signals at focal sites of high-affinity LFA-1 that provide contact-mediated guidance for neutrophil emigration.
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Affiliation(s)
- Neha Dixit
- Department of Biomedical Engineering, University of California, Davis, Davis, CA 95616, USA
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13
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Abumaree MH, Zhu L, Bardeen CJ, Al-Suwaidan SD, Al-Kaysi RO. Fabrication of biologically active surface-modified Taxol nanowires using anodic aluminum oxide templates. RSC Adv 2011. [DOI: 10.1039/c1ra00424g] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Ohkubo Y, Onishi S, Ohtake T, Ogawa K. Technique for Immobilizing Copper Ions on a Substrate through a Nanoscale Thin Film Containing Pyrrole Groups. JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 2010. [DOI: 10.1252/jcej.09we173] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Yuji Ohkubo
- Department of Advanced Materials Science, Graduate School of Engineering, Kagawa University
- Kagawa Gakusei Venture Ltd
| | - Shogo Onishi
- Department of Advanced Materials Science, Graduate School of Engineering, Kagawa University
| | - Tadashi Ohtake
- Department of Advanced Materials Science, Graduate School of Engineering, Kagawa University
| | - Kazufumi Ogawa
- Department of Advanced Materials Science, Graduate School of Engineering, Kagawa University
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Rollings DAE, Veinot JGC. Polysiloxane nanofibers via surface initiated polymerization of vapor phase reagents: a mechanism of formation and variable wettability of fiber-bearing substrates. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2008; 24:13653-13662. [PMID: 18980346 DOI: 10.1021/la801595m] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
A detailed study of polysiloxane nanofiber formation by surface initiated polymerization of vapor phase organotrichlorosilane reagents is presented. Substrate composition, substrate activation, reagent quantity, reaction pressure, and reaction time are parameters shown to influence nanofiber synthesis. Stepwise variation of the parameters isolates the role of each on polysiloxane nanofiber growth, and a mechanism for fiber formation is proposed based on these findings. Tunable aqueous wettability of the fibers is also demonstrated in this report, with contact angles varying from 85 degrees to 130 degrees +/- 2 degrees depending upon fiber surface density and length. Aqueous contact angles are further increased to >150 degrees by either solution functionalization of calcined fibers or copolymerization with an organofluorosilane
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Affiliation(s)
- De-ann E Rollings
- Department of Chemistry, University of Alberta, Edmonton, Alberta, T6G 2G2 Canada
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Zhang F, Zhao L, Chen H, Xu S, Evans D, Duan X. Corrosion Resistance of Superhydrophobic Layered Double Hydroxide Films on Aluminum. Angew Chem Int Ed Engl 2008; 47:2466-9. [DOI: 10.1002/anie.200704694] [Citation(s) in RCA: 452] [Impact Index Per Article: 28.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Zhang F, Zhao L, Chen H, Xu S, Evans D, Duan X. Corrosion Resistance of Superhydrophobic Layered Double Hydroxide Films on Aluminum. Angew Chem Int Ed Engl 2008. [DOI: 10.1002/ange.200704694] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Wen K, Maoz R, Cohen H, Sagiv J, Gibaud A, Desert A, Ocko BM. Postassembly chemical modification of a highly ordered organosilane multilayer: new insights into the structure, bonding, and dynamics of self-assembling silane monolayers. ACS NANO 2008; 2:579-599. [PMID: 19206585 DOI: 10.1021/nn800011t] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Experimental evidence derived from a comprehensive study of a self-assembled organosilane multilayer film system undergoing a process of postassembly chemical modification that affects interlayer-located polar groups of the constituent molecules while preserving its overall molecular architecture allows a quantitative evaluation of both the degree of intralayer polymerization and that of interlayer covalent bonding of the silane headgroups in a highly ordered layer assembly of this type. The investigated system consists of a layer-by-layer assembled multilayer of a bifunctional n-alkyl silane with terminal alcohol group that is in situ converted, via a wet chemical oxidation process conducted on the entire multilayer, to the corresponding carboxylic acid function. A combined chemical-structural analysis of data furnished by four different techniques, Fourier transform infrared spectroscopy (FTIR), synchrotron X-ray scattering, X-ray photoelectron spectroscopy (XPS), and contact angle measurements, demonstrates that the highly ordered 3D molecular arrangement of the initial alcohol-silane multilayer stack is well preserved upon virtually quantitative conversion of the alcohol to carboxylic acid and the concomitant irreversible cleavage of interlayer covalent bonds. Thus, the correlation of quantitative chemical and structural data obtained from such unreacted and fully reacted film samples offers an unprecedented experimental framework within which it becomes possible to differentiate between intralayer and interlayer covalent bonding. In addition, the use of a sufficiently thick multilayer effectively eliminates the interfering contributions of the underlying silicon oxide substrate to both the X-ray scattering and XPS data. The present findings contribute a firm experimental basis to the elucidation of the self-assembly mechanism, the molecular organization, and the modes and dynamics of intra- and interlayer bonding prevailing in highly ordered organosilane films; with further implications for the rational exploitation of some of the unique options such supramolecular surface entities can offer in the advancement of a chemical nanofabrication methodology.
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Affiliation(s)
- Ke Wen
- Department of Materials and Interface, The Weizmann Institute of Science, Rehovot 76100, Israel
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