1
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Mazlan NF, Sage EE, Mohamad NS, Mackeen MM, Tan LL. On-site sensing for aflatoxicosis poisoning via ultraviolet excitable aptasensor based on fluorinated ethylene propylene strip: a promising forensic tool. Sci Rep 2024; 14:17357. [PMID: 39075202 PMCID: PMC11286874 DOI: 10.1038/s41598-024-68264-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2024] [Accepted: 07/22/2024] [Indexed: 07/31/2024] Open
Abstract
The environmental contamination by extremophile Aspergillus species, i.e., Aflatoxin B1, is hardly controllable in Southeast Asia and Sub-Saharan Africa, which lack handling resources and controlled storage facilities. Acute aflatoxicosis poisoning from aflatoxin-prone dietary staples could cause acute hepatic necrosis, acute liver failure, and death. Here, as the cheaper, more straightforward, and facile on-site diagnostic kit is needed, we report an ultraviolet-excitable optical aptasensor based on a fluorinated ethylene propylene film strip. Molecular dynamics on the aptamer.AFB1 complex revealed that the AFB1 to the aptamer increases the overall structural stability, suggesting that the aptamer design is suitable for the intended application. Under various influencing factors, the proposed label-free strategy offers a fast 20-min on-site fabrication simplicity and 19-day shelf-life. The one-pot incubation provides an alternative to catalytic detection and exhibited 4 times reusability. The recovery of crude brown sugar, processed peanuts, and long-grain rice were 102.74 ± 0.41 (n = 3), 86.90 ± 3.38 (n = 3), and 98.50 ± 0.42 (n = 3), comparable to High-Performance Liquid Chromatography-Photodiode Array Detector results. This study is novel owing to the peculiar UV-active spectrum fingerprint and the convenient use of hydrophobic film strips that could promote breakthrough innovations and new frontiers for on-site/forensic detection of environmental pollutants.
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Affiliation(s)
- Nur-Fadhilah Mazlan
- Southeast Asia Disaster Prevention Research Initiative (SEADPRI), Institute for Environment and Development (LESTARI), Universiti Kebangsaan Malaysia, 43600, Bangi, Selangor, Malaysia
| | - Edison Eukun Sage
- Department of Applied Physics, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600, Bangi, Selangor, Malaysia
| | - Nur Syamimi Mohamad
- Southeast Asia Disaster Prevention Research Initiative (SEADPRI), Institute for Environment and Development (LESTARI), Universiti Kebangsaan Malaysia, 43600, Bangi, Selangor, Malaysia
| | - Mukram Mohamed Mackeen
- Department of Chemical Sciences, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600, Bangi, Selangor, Malaysia
- Institute of Systems Biology, Universiti Kebangsaan Malaysia, 43600, Bangi, Selangor, Malaysia
| | - Ling Ling Tan
- Southeast Asia Disaster Prevention Research Initiative (SEADPRI), Institute for Environment and Development (LESTARI), Universiti Kebangsaan Malaysia, 43600, Bangi, Selangor, Malaysia.
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2
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Immunosensing prostate-specific antigen: Faradaic vs non-Faradaic electrochemical impedance spectroscopy analysis on interdigitated microelectrode device. Int J Biol Macromol 2020; 162:1924-1936. [DOI: 10.1016/j.ijbiomac.2020.08.125] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 08/10/2020] [Accepted: 08/14/2020] [Indexed: 01/16/2023]
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3
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Design of bio-inspired adhesive surface composed of hexanoyl group-modified gelatin and silicon nanowire. Colloids Surf B Biointerfaces 2019; 178:111-119. [DOI: 10.1016/j.colsurfb.2019.02.053] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Revised: 12/06/2018] [Accepted: 02/27/2019] [Indexed: 11/18/2022]
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4
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Carvalho RR, Pujari SP, Gahtory D, Vrouwe EX, Albada B, Zuilhof H. Mild Photochemical Biofunctionalization of Glass Microchannels. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:8624-8631. [PMID: 28072547 DOI: 10.1021/acs.langmuir.6b03931] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The ability to locally modify the inside of microfluidic channels with bioactive molecules is of ever-rising relevance. In this article, we show the direct photochemical coupling of a N-hydroxysuccinimide-terminated ω-alkene onto hydrogen-terminated silicon oxide, and its subsequent functionalization with a catalytically active DNAzyme. To achieve this local attachment of a DNAzyme, we prepared hydrogen-phenyl-terminated glass (H-Φ-glass) by the reaction of glass with H-SiPhCl2. The presence of a radical-stabilizing substituent on the Si atom (i.e., phenyl) enabled the covalent modification of bare glass substrates and of the inside of glass microchannels with a functional organic monolayer that allowed direct reaction with an amine-functionalized biomolecule. In this study, we directly attached an NHS-functionalized alkene to the modified glass surface using light with a wavelength of 328 nm, as evidenced by SCA, G-ATR, XPS, SEM, AFM and fluorescence microscopy. Using these NHS-based active esters on the surface, we performed a direct localized attachment of a horseradish peroxidase (HRP)-mimicking hemin/G-quadruplex (hGQ) DNAzyme complex inside a microfluidic channel. This wall-coated hGQ DNAzyme effectively catalyzed the in-flow oxidation of 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonate) [ABTS] in the presence of hydrogen peroxide. This proof-of-concept of mild biofunctionalization will allow the facile preparation of modified microchannels for myriad biorelevant applications.
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Affiliation(s)
- Rui Rijo Carvalho
- Laboratory of Organic Chemistry, Wageningen University and Research , Stippeneng 4, 6708 WE, Wageningen, The Netherlands
- Micronit Microtechnologies B.V., Colosseum 15, 7521 PV, Enschede, The Netherlands
| | - Sidharam P Pujari
- Laboratory of Organic Chemistry, Wageningen University and Research , Stippeneng 4, 6708 WE, Wageningen, The Netherlands
| | - Digvijay Gahtory
- Laboratory of Organic Chemistry, Wageningen University and Research , Stippeneng 4, 6708 WE, Wageningen, The Netherlands
| | - Elwin X Vrouwe
- Micronit Microtechnologies B.V., Colosseum 15, 7521 PV, Enschede, The Netherlands
| | - Bauke Albada
- Laboratory of Organic Chemistry, Wageningen University and Research , Stippeneng 4, 6708 WE, Wageningen, The Netherlands
| | - Han Zuilhof
- Laboratory of Organic Chemistry, Wageningen University and Research , Stippeneng 4, 6708 WE, Wageningen, The Netherlands
- School of Pharmaceutical Sciences and Technology, Tianjin University , 92 Weijin Road, Tianjin, P.R. China
- Department of Chemical and Materials Engineering, King Abdulaziz University , Jeddah, Saudi Arabia
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5
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Carvalho RR, Pujari SP, Vrouwe EX, Zuilhof H. Mild and Selective C-H Activation of COC Microfluidic Channels Allowing Covalent Multifunctional Coatings. ACS APPLIED MATERIALS & INTERFACES 2017; 9:16644-16650. [PMID: 28481097 PMCID: PMC5437660 DOI: 10.1021/acsami.7b02022] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2017] [Accepted: 05/01/2017] [Indexed: 05/21/2023]
Abstract
Plastics, such as cyclic olefin copolymer (COC), are becoming an increasingly popular material for microfluidics. COC is used, in part, because of its (bio)-chemical resistance. However, its inertness and hydrophobicity can be a major downside for many bioapplications. In this paper, we show the first example of a surface-bound selective C-H activation of COC into alcohol C-OH moieties under mild aqueous conditions at room temperature. The nucleophilic COC-OH surface allows for subsequent covalent attachments, such as of a H-terminated silane. The resulting hybrid material (COC-Si-H) was then modified via a photolithographic hydrosilylation in the presence of ω-functionalized 1-alkenes to form a new highly stable, solvent-resistant hybrid surface.
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Affiliation(s)
- Rui Rijo Carvalho
- Laboratory of Organic
Chemistry, Wageningen University & Research, Stippeneng 4, 6708 WE Wageningen, The Netherlands
- Micronit Microtechnologies B.V., Colosseum 15, 7521 PV Enschede, The Netherlands
| | - Sidharam P. Pujari
- Laboratory of Organic
Chemistry, Wageningen University & Research, Stippeneng 4, 6708 WE Wageningen, The Netherlands
| | - Elwin X. Vrouwe
- Micronit Microtechnologies B.V., Colosseum 15, 7521 PV Enschede, The Netherlands
| | - Han Zuilhof
- Laboratory of Organic
Chemistry, Wageningen University & Research, Stippeneng 4, 6708 WE Wageningen, The Netherlands
- School of
Pharmaceutical Sciences and Technology, Tianjin University, 92 Weijin Road, Tianjin 300072, P.R. China
- Department of Chemical
and Materials Engineering, King Abdulaziz
University, Jeddah 23218, Saudi Arabia
- E-mail:
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6
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Investigation of human cell response to covalently attached RADA16-I peptide on silicon surfaces. Colloids Surf B Biointerfaces 2016; 145:470-478. [PMID: 27236098 DOI: 10.1016/j.colsurfb.2016.05.030] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2016] [Revised: 05/06/2016] [Accepted: 05/11/2016] [Indexed: 12/15/2022]
Abstract
We described a modification of the ionic (RADARADARADARADA)(1) peptide or RADA16-I with 4-azidophenyl isothiocyanate via a specific and gentle reaction. The azidated peptide was covalently immobilized on an alkyne-terminated monolayer on Si(111) via the Cu(I)-catalyzed Huisgen 1,3-dipolar cycloaddition reaction. Detailed characterization using Impedance spectroscopy (IS), X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared (FTIR) spectroscopy demonstrated high coverage of the RADA 16-I peptide on silicon surfaces. Scanning electron microscopy (SEM) and methyl tetrazole sulfate (MTS) assay were used to characterize the morphology and proliferation ability of human fibroblast cells on surfaces. Cell adhesion assay was performed to examine cell-substrate interactions. Significant differences in fibroblast cell morphology, adhesion, and viability were observed on the RADA16-I peptide modified surfaces compared to the control surfaces. These results may suggest a potential application of RADA16-I peptide modified surfaces in biomedical applications.
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7
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Chang JB, Kim YH, Thompson E, No YH, Kim NH, Arrieta J, Manfrinato VR, Keating AE, Berggren KK. The Orientations of Large Aspect-Ratio Coiled-Coil Proteins Attached to Gold Nanostructures. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2016; 12:1498-1505. [PMID: 26799936 DOI: 10.1002/smll.201502419] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2015] [Revised: 11/30/2015] [Indexed: 06/05/2023]
Abstract
Methods for patterning biomolecules on a substrate at the single molecule level have been studied as a route to sensors with single-molecular sensitivity or as a way to probe biological phenomena at the single-molecule level. However, the arrangement and orientation of single biomolecules on substrates has been less investigated. Here, the arrangement and orientation of two rod-like coiled-coil proteins, cortexillin and tropomyosin, around patterned gold nanostructures is examined. The high aspect ratio of the coiled coils makes it possible to study their orientations and to pursue a strategy of protein orientation via two-point attachment. The proteins are anchored to the surfaces using thiol groups, and the number of cysteine residues in tropomyosin is varied to test how this variation affects the structure and arrangement of the surface-attached proteins. Molecular dynamics studies are used to interpret the observed positional distributions. Based on initial studies of protein attachment to gold post structures, two 31-nm-long tropomyosin molecules are aligned between the two sidewalls of a trench with a width of 68 nm. Because the approach presented in this study uses one of twenty natural amino acids, this method provides a convenient way to pattern biomolecules on substrates using standard chemistry.
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Affiliation(s)
- Jae-Byum Chang
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - Yong Ho Kim
- Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University, Suwon, 440-746, South Korea
- Department of Chemistry, Sungkyunkwan University, Suwon, 440-746, South Korea
| | - Evan Thompson
- Department of Biology, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - Young Hyun No
- Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University, Suwon, 440-746, South Korea
| | - Nam Hyeong Kim
- Department of Chemistry, Sungkyunkwan University, Suwon, 440-746, South Korea
| | - Jose Arrieta
- Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - Vitor R Manfrinato
- Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - Amy E Keating
- Department of Biology, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - Karl K Berggren
- Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
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8
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Kamra T, Chaudhary S, Xu C, Montelius L, Schnadt J, Ye L. Covalent immobilization of molecularly imprinted polymer nanoparticles on a gold surface using carbodiimide coupling for chemical sensing. J Colloid Interface Sci 2016; 461:1-8. [DOI: 10.1016/j.jcis.2015.09.009] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2015] [Revised: 09/03/2015] [Accepted: 09/03/2015] [Indexed: 10/23/2022]
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9
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Peng W, Rupich SM, Shafiq N, Gartstein YN, Malko AV, Chabal YJ. Silicon Surface Modification and Characterization for Emergent Photovoltaic Applications Based on Energy Transfer. Chem Rev 2015; 115:12764-96. [DOI: 10.1021/acs.chemrev.5b00085] [Citation(s) in RCA: 74] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Weina Peng
- Department of Materials
Science and Engineering and ‡Department of Physics, University of Texas at Dallas, Richardson, Texas 75080, United States
| | - Sara M. Rupich
- Department of Materials
Science and Engineering and ‡Department of Physics, University of Texas at Dallas, Richardson, Texas 75080, United States
| | - Natis Shafiq
- Department of Materials
Science and Engineering and ‡Department of Physics, University of Texas at Dallas, Richardson, Texas 75080, United States
| | - Yuri N. Gartstein
- Department of Materials
Science and Engineering and ‡Department of Physics, University of Texas at Dallas, Richardson, Texas 75080, United States
| | - Anton V. Malko
- Department of Materials
Science and Engineering and ‡Department of Physics, University of Texas at Dallas, Richardson, Texas 75080, United States
| | - Yves J. Chabal
- Department of Materials
Science and Engineering and ‡Department of Physics, University of Texas at Dallas, Richardson, Texas 75080, United States
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10
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Debrassi A, Roeven E, Thijssen S, Scheres L, de Vos WM, Wennekes T, Zuilhof H. Versatile (bio)functionalization of bromo-terminated phosphonate-modified porous aluminum oxide. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:5633-5644. [PMID: 25919333 DOI: 10.1021/acs.langmuir.5b00853] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Porous aluminum oxide (PAO) is a nanoporous material used for various (bio)technological applications, and tailoring its surface properties via covalent modification is a way to expand and refine its application. Specific and complex chemical modification of the PAO surface requires a stepwise approach in which a secondary reaction on a stable initial modification is necessary to achieve the desired terminal molecular architecture and reactivity. We here show that the straightforward initial modification of the bare PAO surface with bromo-terminated phosphonic acid allows for the subsequent preparation of PAO with a wide scope of terminal reactive groups, making it suitable for (bio)functionalization. Starting from the initial bromo-terminated PAO, we prepared PAO surfaces presenting various terminal functional groups, such as azide, alkyne, alkene, thiol, isothiocyanate, and N-hydroxysuccinimide (NHS). We also show that this wide scope of easily accessible tailored reactive PAO surfaces can be used for subsequent modification with (bio)molecules, including carbohydrate derivatives and fluorescently labeled proteins.
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Affiliation(s)
- Aline Debrassi
- †Laboratory of Organic Chemistry, Wageningen University, Dreijenplein 8, 6703 HB Wageningen, The Netherlands
| | - Esther Roeven
- ‡Surfix BV, Dreijenplein 8, 6703 HB Wageningen, The Netherlands
| | - Selina Thijssen
- †Laboratory of Organic Chemistry, Wageningen University, Dreijenplein 8, 6703 HB Wageningen, The Netherlands
| | - Luc Scheres
- ‡Surfix BV, Dreijenplein 8, 6703 HB Wageningen, The Netherlands
| | - Willem M de Vos
- §Laboratory of Microbiology, Wageningen University, Dreijenplein 10, 6703 HB Wageningen, The Netherlands
| | - Tom Wennekes
- †Laboratory of Organic Chemistry, Wageningen University, Dreijenplein 8, 6703 HB Wageningen, The Netherlands
| | - Han Zuilhof
- †Laboratory of Organic Chemistry, Wageningen University, Dreijenplein 8, 6703 HB Wageningen, The Netherlands
- ⊥Department of Chemical and Materials Engineering, King Abdulaziz University, 21589 Jeddah, Saudi Arabia
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11
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Koniev O, Wagner A. Developments and recent advancements in the field of endogenous amino acid selective bond forming reactions for bioconjugation. Chem Soc Rev 2015; 44:5495-551. [PMID: 26000775 DOI: 10.1039/c5cs00048c] [Citation(s) in RCA: 391] [Impact Index Per Article: 43.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Bioconjugation methodologies have proven to play a central enabling role in the recent development of biotherapeutics and chemical biology approaches. Recent endeavours in these fields shed light on unprecedented chemical challenges to attain bioselectivity, biocompatibility, and biostability required by modern applications. In this review the current developments in various techniques of selective bond forming reactions of proteins and peptides were highlighted. The utility of each endogenous amino acid-selective conjugation methodology in the fields of biology and protein science has been surveyed with emphasis on the most relevant among reported transformations; selectivity and practical use have been discussed.
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Affiliation(s)
- Oleksandr Koniev
- Laboratory of Functional Chemo-Systems (UMR 7199), Labex Medalis, University of Strasbourg, 74 Route du Rhin, 67401 Illkirch-Graffenstaden, France.
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12
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King JR, Bowers CM, Toone EJ. Specific binding at the cellulose binding module-cellulose interface observed by force spectroscopy. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:3431-40. [PMID: 25738531 DOI: 10.1021/la504836u] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
The need for effective enzymatic depolymerization of cellulose has stimulated an interest in interactions between protein and cellulose. Techniques utilized for quantitative measurements of protein-cellulose noncovalent association include microgravimetry, calorimetry, and atomic force microscopy (AFM), none of which differentiate between specific protein-cellulose binding and nonspecific adhesion. Here, we describe an AFM approach that differentiates nonspecific from specific interactions between cellulose-binding modules (CBMs) and cellulose. We demonstrate that the "mismatched" interaction between murine galectin-3, a lectin with no known affinity for cellulose, and cellulose shows molecular recognition force microscopy profiles similar to those observed during the interaction of a "matched" clostridial CBM3a with the same substrate. We also examine differences in binding probabilities and rupture profiles during CBM-cellulose binding experiments in the presence and absence of a blocking agent-a substrate specific for CBM that presumably blocks binding sites. By comparison of the behavior of the two proteins, we separate specific (i.e., blockable) and nonspecific adhesion events and show that both classes of interaction exhibit nearly identical rupture forces (45 pN at ∼0.4 nN/s). Our work provides an important caveat for the interpretation of protein-carbohydrate binding by force spectroscopy; delineation of the importance of such interactions to other classes of binding warrants further study.
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Affiliation(s)
- Jason R King
- †Department of Chemistry, Duke University, Durham, North Carolina 27708, United States
| | - Carleen M Bowers
- †Department of Chemistry, Duke University, Durham, North Carolina 27708, United States
| | - Eric J Toone
- †Department of Chemistry, Duke University, Durham, North Carolina 27708, United States
- ‡Department of Biochemistry, Duke University Medical School, Durham, North Carolina 27710, United States
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13
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Yang J, Chazalviel JN, Siriwardena A, Boukherroub R, Ozanam F, Szunerits S, Gouget-Laemmel AC. Quantitative assessment of the multivalent protein-carbohydrate interactions on silicon. Anal Chem 2014; 86:10340-9. [PMID: 25216376 DOI: 10.1021/ac502624m] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
A key challenge in the development of glycan arrays is that the sensing interface be fabricated reliably so as to ensure the sensitive and accurate analysis of the protein-carbohydrate interaction of interest, reproducibly. These goals are complicated in the case of glycan arrays as surface sugar density can influence dramatically the strength and mode of interaction of the sugar ligand at any interface with lectin partners. In this Article, we describe the preparation of carboxydecyl-terminated crystalline silicon (111) surfaces onto which are grafted either mannosyl moieties or a mixture of mannose and spacer alcohol molecules to provide "diluted" surfaces. The fabrication of the silicon surfaces was achieved efficiently through a strategy implicating a "click" coupling step. The interactions of these newly fabricated glycan interfaces with the lectin, Lens culinaris, have been characterized using quantitative infrared (IR) spectroscopy in the attenuated total geometry (ATR). The density of mannose probes and lectin targets was precisely determined for the first time by the aid of special IR calibration experiments, thus allowing for the interpretation of the distribution of mannose and its multivalent binding with lectins. These experimental findings were accounted for by numerical simulations of lectin adsorption.
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Affiliation(s)
- Jie Yang
- Physique de la Matière Condensée, Ecole Polytechnique-CNRS , 91128 Palaiseau, France
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14
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Gadenne V, Lebrun L, Jouenne T, Thebault P. Role of molecular properties of ulvans on their ability to elaborate antiadhesive surfaces. J Biomed Mater Res A 2014; 103:1021-8. [DOI: 10.1002/jbm.a.35245] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2014] [Revised: 05/19/2014] [Accepted: 05/30/2014] [Indexed: 12/27/2022]
Affiliation(s)
- Virginie Gadenne
- CNRS; UMR 6270, Polymères, Biopolymères, Surfaces Laboratory; F-76821 Mont-Saint-Aignan France
- Normandie Univ; UR France
| | - Laurent Lebrun
- CNRS; UMR 6270, Polymères, Biopolymères, Surfaces Laboratory; F-76821 Mont-Saint-Aignan France
- Normandie Univ; UR France
| | - Thierry Jouenne
- CNRS; UMR 6270, Polymères, Biopolymères, Surfaces Laboratory; F-76821 Mont-Saint-Aignan France
- Normandie Univ; UR France
| | - Pascal Thebault
- CNRS; UMR 6270, Polymères, Biopolymères, Surfaces Laboratory; F-76821 Mont-Saint-Aignan France
- Normandie Univ; UR France
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15
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Nietzold C, Dietrich PM, Ivanov-Pankov S, Lippitz A, Gross T, Weigel W, Unger WES. Functional group quantification on epoxy surfaces by chemical derivatization (CD)-XPS. SURF INTERFACE ANAL 2014. [DOI: 10.1002/sia.5433] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Carolin Nietzold
- BAM Federal Institute for Materials Research and Testing; Unter den Eichen 87 12205 Berlin Germany
| | - Paul M. Dietrich
- BAM Federal Institute for Materials Research and Testing; Unter den Eichen 87 12205 Berlin Germany
| | | | - Andreas Lippitz
- BAM Federal Institute for Materials Research and Testing; Unter den Eichen 87 12205 Berlin Germany
| | - Thomas Gross
- BAM Federal Institute for Materials Research and Testing; Unter den Eichen 87 12205 Berlin Germany
| | | | - Wolfgang E. S. Unger
- BAM Federal Institute for Materials Research and Testing; Unter den Eichen 87 12205 Berlin Germany
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16
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Giesbers M, Marcelis ATM, Zuilhof H. Simulation of XPS C1s spectra of organic monolayers by quantum chemical methods. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:4782-8. [PMID: 23548381 DOI: 10.1021/la400445s] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Several simple methods are presented and evaluated to simulate the X-ray photoelectron spectra (XPS) of organic monolayers and polymeric layers by density functional theory (DFT) and second-order Møller-Plesset theory (MP2) in combination with a series of basis sets. The simulated carbon (C1s) XPS spectra as obtained via B3LYP/6-311G(d,p) or M11/6-311G(d,p) calculations are in good agreement (average mean error <0.3 eV) with the experimental spectra, and good estimates of C1s spectra can be obtained via E(C1s)(exp) = 0.9698EC1s(theory) + 20.34 (in eV) (B3LYP/6-311G(d,p)). As a result, the simulated C1s XPS spectra can elucidate the binding energies of the different carbon species within an organic layer and, in this way, greatly aid the assignment of complicated C1s XPS spectra. The paper gives a wide range of examples, including haloalkanes, esters, (thio-)ethers, leaving groups, clickable functionalities, and bioactive moieties.
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Affiliation(s)
- Marcel Giesbers
- Laboratory of Organic Chemistry, Dreijenplein 8, Wageningen University, Wageningen, The Netherlands
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17
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Miao R, Mu L, Zhang H, Xu H, Zhou B, She G, Wang P, Shi W. Facile method for modification of the silicon nanowires and its application in fabrication of pH-sensitive chips. ACS APPLIED MATERIALS & INTERFACES 2013; 5:1741-1746. [PMID: 23421422 DOI: 10.1021/am302953f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
A novel, facile, and effective method for modification of SiNWs or SiNW arrays has been developed. In this method, reaction between reductive Si-H bonds on the surface of SiNWs and the aldehyde group containing in organic molecules has been used for immobilization of organic molecules onto the surface of SiNW arrays. The method is time saving and can be operated at room temperature without any other complex reaction requirement. Fluorescence images, XPS, fluorescence spectra, and IR spectra were used for characterization of the modification. Through this method, a SiNW array-based pH sensitive chip was realized by covalently immobilizing 5-aminofluorescein molecules onto the surface of SiNW arrays with glutaraldehyde as linker molecules. Fluorescence intensity of the chip increased with increasing of pH value and a linear relationship between fluorescence intensity and pH values was acquired. In addition, the chip has been successfully used for real-time and in situ monitoring of extracellular pH changes for live HeLa cells and the result exhibited fine resolution of time and space.
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Affiliation(s)
- Rong Miao
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190 China
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18
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Li X, Wang M, Wang L, Shi X, Xu Y, Song B, Chen H. Block copolymer modified surfaces for conjugation of biomacromolecules with control of quantity and activity. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:1122-1128. [PMID: 23265296 DOI: 10.1021/la3044472] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Polymer brush layers based on block copolymers of poly(oligo(ethylene glycol) methacrylate) (POEGMA) and poly(glycidyl methacrylate) (PGMA) were formed on silicon wafers by activators generated by electron transfer atom transfer radical polymerization (AGET ATRP). Different types of biomolecule can be conjugated to these brush layers by reaction of PGMA epoxide groups with amino groups in the biomolecule, while POEGMA, which resists nonspecific protein adsorption, provides an antifouling environment. Surfaces were characterized by water contact angle, ellipsometry, and Fourier transform infrared spectroscopy (FTIR) to confirm the modification reactions. Phase segregation of the copolymer blocks in the layers was observed by AFM. The effect of surface properties on protein conjugation was investigated using radiolabeling methods. It was shown that surfaces with POEGMA layers were protein resistant, while the quantity of protein conjugated to the diblock copolymer modified surfaces increased with increasing PGMA layer thickness. The activity of lysozyme conjugated on the surface could also be controlled by varying the thickness of the copolymer layer. When biotin was conjugated to the block copolymer grafts, the surface remained resistant to nonspecific protein adsorption but showed specific binding of avidin. These properties, that is, well-controlled quantity and activity of conjugated biomolecules and specificity of interaction with target biomolecules may be exploited for the improvement of signal-to-noise ratio in sensor applications. More generally, such surfaces may be useful as biological recognition elements of high specificity for functional biomaterials.
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Affiliation(s)
- Xin Li
- Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Department of Polymer Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 199 Ren'ai Road, Suzhou, 215123, PR China
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Pujari SP, Spruijt E, Cohen Stuart MA, van Rijn CJM, Paulusse JMJ, Zuilhof H. Ultralow adhesion and friction of fluoro-hydro alkyne-derived self-assembled monolayers on H-terminated Si(111). LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:17690-17700. [PMID: 23234602 DOI: 10.1021/la303893u] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
New fluorine-containing terminal alkynes were synthesized and self-assembled onto Si(111) substrates to obtain fluorine-containing organic monolayers. The monolayers were analyzed in detail by ellipsometry, X-ray photoelectron spectroscopy (XPS), Fourier transform infrared reflection absorption spectroscopy (FT-IRRAS), static water contact angle measurements (CA), and atomic force microscopy (AFM). The SAMs exhibit excellent hydrophobicity, with static water contact angles of up to 119° and low critical surface tensions of 5-20 mN/m depending on the number of F atoms per molecule. IRRAS confirmed the formation of highly ordered monolayers, as indicated by the antisymmetric and symmetric stretching vibrations of the CH(2) moieties at 2918-2920 and 2850-2851 cm(-1), respectively. Upon increasing the number of fluorine atoms in the alkyne chains from 0 to 17, the adhesion of bare silica probes to the SAMs in air decreases from 11.6 ± 0.20 mJ/m(2) for fluorine-free (F0) alkyne monolayers to as low as 3.2 ± 0.03 mJ/m(2) for a heptadecafluoro-hexadecyne (F17)-based monolayer. Likewise, the friction coefficient decreases from 5.7 × 10(-2) to 1.2 × 10(-2). The combination of high ordering, excellent hydrophobicity, low adhesion, and low friction makes these fluoro-hydro alkyne-derived monolayers highly promising candidates for use in high-performance microelectronic devices.
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Affiliation(s)
- Sidharam P Pujari
- Laboratory of Organic Chemistry, Wageningen University, Wageningen, The Netherlands
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20
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Manova RK, Pujari SP, Weijers CAGM, Zuilhof H, van Beek TA. Copper-free click biofunctionalization of silicon nitride surfaces via strain-promoted alkyne-azide cycloaddition reactions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:8651-63. [PMID: 22642374 DOI: 10.1021/la300921e] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Cu-free "click" chemistry is explored on silicon nitride (Si(3)N(4)) surfaces as an effective way for oriented immobilization of biomolecules. An ω-unsaturated ester was grafted onto Si(3)N(4) using UV irradiation. Hydrolysis followed by carbodiimide-mediated activation yielded surface-bound active succinimidyl and pentafluorophenyl ester groups. These reactive surfaces were employed for the attachment of bicyclononyne with an amine spacer, which subsequently enabled room temperature strain-promoted azide-alkyne cycloaddition (SPAAC). This stepwise approach was characterized by means of static water contact angle, X-ray photoelectron spectroscopy, and fluorescence microscopy. The surface-bound SPAAC reaction was studied with both a fluorine-tagged azide and an azide-linked lactose, yielding hydrophobic and bioactive surfaces for which the presence of trace amounts of Cu ions would have been problematic. Additionally, patterning of the Si(3)N(4) surface using this metal-free click reaction with a fluorescent azide is shown. These results demonstrate the ability of the SPAAC as a generic tool for anchoring complex molecules onto a surface under extremely mild, namely ambient and metal-free, conditions in a clean and relatively fast manner.
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Affiliation(s)
- Radostina K Manova
- Laboratory of Organic Chemistry, Wageningen University, Dreijenplein 8, 6703 HB Wageningen, The Netherlands
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21
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Rijksen B, Pujari SP, Scheres L, van Rijn CJM, Baio JE, Weidner T, Zuilhof H. Hexadecadienyl monolayers on hydrogen-terminated Si(111): faster monolayer formation and improved surface coverage using the enyne moiety. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:6577-6588. [PMID: 22448743 DOI: 10.1021/la204770r] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
To further improve the coverage of organic monolayers on hydrogen-terminated silicon (H-Si) surfaces with respect to the hitherto best agents (1-alkynes), it was hypothesized that enynes (H-C≡C-HC═CH-R) would be even better reagents for dense monolayer formation. To investigate whether the increased delocalization of β-carbon radicals by the enyne functionality indeed lowers the activation barrier, the kinetics of monolayer formation by hexadec-3-en-1-yne and 1-hexadecyne on H-Si(111) were followed by studying partially incomplete monolayers. Ellipsometry and static contact angle measurements indeed showed a faster increase of layer thickness and hydrophobicity for the hexadec-3-en-1-yne-derived monolayers. This more rapid monolayer formation was supported by IRRAS and XPS measurements that for the enyne show a faster increase of the CH2 stretching bands and the amount of carbon at the surface (C/Si ratio), respectively. Monolayer formation at room temperature yielded plateau values for hexadec-3-en-1-yne and 1-hexadecyne after 8 and 16 h, respectively. Additional experiments were performed for 16 h at 80° to ensure full completion of the layers, which allows comparison of the quality of both layers. Ellipsometry thicknesses (2.0 nm) and contact angles (111-112°) indicated a high quality of both layers. XPS, in combination with DFT calculations, revealed terminal attachment of hexadec-3-en-1-yne to the H-Si surface, leading to dienyl monolayers. Moreover, analysis of the Si2p region showed no surface oxidation. Quantitative XPS measurements, obtained via rotating Si samples, showed a higher surface coverage for C16 dienyl layers than for C16 alkenyl layers (63% vs 59%). The dense packing of the layers was confirmed by IRRAS and NEXAFS results. Molecular mechanics simulations were undertaken to understand the differences in reactivity and surface coverage. Alkenyl layers show more favorable packing energies for surface coverages up to 50-55%. At higher coverages, this packing energy rises quickly, and there the dienyl packing becomes more favorable. When the binding energies are included the difference becomes more pronounced, and dense packing of dienyl layers becomes more favorable by 2-3 kcal/mol. These combined data show that enynes provide the highest-quality organic monolayers reported on H-Si up to now.
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Affiliation(s)
- Bart Rijksen
- Laboratory of Organic Chemistry, Wageningen University , Dreijenplein 8, 6703 HB, Wageningen, The Netherlands
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22
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Li Y, Zuilhof H. Photochemical grafting and patterning of organic monolayers on indium tin oxide substrates. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:5350-5359. [PMID: 22324432 DOI: 10.1021/la204980f] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Covalently attached organic layers on indium tin oxide (ITO) surfaces were prepared by the photochemical grafting with 1-alkenes. The surface modification was monitored with static water contact angle, X-ray photoelectron spectroscopy (XPS), and atomic force microscopy (AFM) measurements. Hydrophobic methyl-terminated ITO surfaces can be obtained via the grafting of tetradec-1-ene, whereas the attachment of ω-functionalized 1-alkenes leads to functionalized ITO surfaces. The use of a C≡C-Ge(CH(3))(3) terminus allows for facile tagging of the surface with an azido group via a one-pot deprotection/click reaction, resulting in bio/electronically active interfaces. The combination of nonaggressive chemicals (alkenes), mild reaction conditions (room temperature), and a light-induced grafting that facilitates the direct patterning of organic layers makes this simple approach highly promising for the development of ITO-based (bio)electronic devices.
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Affiliation(s)
- Yan Li
- Laboratory of Organic Chemistry, Wageningen University, Dreijenplein 8, 6703 HB Wageningen, The Netherlands
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23
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Liao HY, Tsai MH, You YW, Chang HY, Huang CC, Shyue JJ. Dramatically Enhanced Oxygen Uptake and Ionization Yield of Positive Secondary Ions with C60+ Sputtering. Anal Chem 2012; 84:3355-61. [DOI: 10.1021/ac300147g] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Hua-Yang Liao
- Research Center for
Applied
Science, Academia Sinica, Tapei 115, Taiwan
| | - Meng-Hung Tsai
- Department
of Materials Science and Engineering, Nation Taiwan University, Taipei 106, Taiwan
| | - Yun-Wen You
- Research Center for
Applied
Science, Academia Sinica, Tapei 115, Taiwan
| | - Hsun-Yun Chang
- Research Center for
Applied
Science, Academia Sinica, Tapei 115, Taiwan
| | - Chih-Chieh Huang
- Department
of Materials Science and Engineering, Nation Taiwan University, Taipei 106, Taiwan
| | - Jing-Jong Shyue
- Research Center for
Applied
Science, Academia Sinica, Tapei 115, Taiwan
- Department
of Materials Science and Engineering, Nation Taiwan University, Taipei 106, Taiwan
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Steiert A, Reimers K, Burke W, Zapf A, Vogt P. Covalent vectored binding of functional proteins by bifunctional crosslinking at silicone interfaces. J Biomed Mater Res A 2012; 100:1248-55. [DOI: 10.1002/jbm.a.34008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2011] [Revised: 10/06/2011] [Accepted: 10/27/2011] [Indexed: 11/09/2022]
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Coffinier Y, Nguyen N, Drobecq H, Melnyk O, Thomy V, Boukherroub R. Affinity surface-assisted laser desorption/ionization mass spectrometry for peptide enrichment. Analyst 2012; 137:5527-32. [DOI: 10.1039/c2an35803d] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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26
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ter Maat J, Regeling R, Ingham CJ, Weijers CAGM, Giesbers M, de Vos WM, Zuilhof H. Organic modification and subsequent biofunctionalization of porous anodic alumina using terminal alkynes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:13606-13617. [PMID: 21962228 DOI: 10.1021/la203738h] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Porous anodic alumina (PAA) is a well-defined material that has found many applications. The range of applications toward sensing and recognition can be greatly expanded if the alumina surface is covalently modified with an organic monolayer. Here, we present a new method for the organic modification of PAA based on the reaction of terminal alkynes with the alumina surface. The reaction results in the the formation of a monolayer within several hours at 80 °C and is dependent on both oxygen and light. Characterization with X-ray photoelectron spectroscopy and infrared spectroscopy indicates formation of a well-defined monolayer in which the adsorbed species is an oxidation product of the 1-alkyne, namely, its α-hydroxy carboxylate. The obtained monolayers are fairly stable in water and at elevated temperatures, as was shown by monitoring the water contact angle. Modification with 1,15-hexadecadiyne resulted in a surface that has alkyne end groups available for further reaction, as was demonstrated by the subsequent reaction of N-(11-azido-3,6,9-trioxaundecyl)trifluoroacetamide with the modified surface. Biofunctionalization was explored by coupling 11-azidoundecyl lactoside to the surface and studying the subsequent adsorption of the lectin peanut agglutinin (PNA) and the yeast Candida albicans, respectively. Selective and reversible binding of PNA to the lactosylated surfaces was demonstrated. Moreover, PNA adsorption was higher on surfaces that exposed the β-lactoside than on those that displayed the α anomer, which was attributed to surface-associated steric hindrance. Likewise, the lactosylated surfaces showed increased colonization of C. albicans compared to unmodified surfaces, presumably due to interactions involving the cell wall β-glucan. Thus, this study provides a new modification method for PAA surfaces and shows that it can be used to induce selective adsorption of proteins and microorganisms.
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Affiliation(s)
- Jurjen ter Maat
- Laboratory of Organic Chemistry, Wageningen University, Dreijenplein 8, 6703 HB Wageningen, The Netherlands
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27
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Campos MAC, Trilling AK, Yang M, Giesbers M, Beekwilder J, Paulusse JMJ, Zuilhof H. Self-assembled functional organic monolayers on oxide-free copper. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:8126-8133. [PMID: 21627331 DOI: 10.1021/la200932w] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The preparation and characterization of self-assembled monolayers on copper with n-alkyl and functional thiols was investigated. Well-ordered monolayers were obtained, while the copper remained oxide-free. Direct attachment of N-succinimidyl mercaptoundecanoate (NHS-MUA) onto the copper surface allowed for the successful attachment of biomolecules, such as β-d-glucosamine, the tripeptide glutathione, and biotin. Notably, the copper surfaces remained oxide-free even after two reaction steps. All monolayers were characterized by static water contact angle measurements, X-ray photoelectron spectroscopy, and infrared reflection absorption spectroscopy. In addition, the biotinylated copper surfaces were employed in the immobilization of biomolecules such as streptavidin.
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Affiliation(s)
- Mabel A Caipa Campos
- Laboratory of Organic Chemistry, Wageningen University and Research Center, Dreijenplein 8, 6703 HB, Wageningen, The Netherlands
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28
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Flavel BS, Sweetman MJ, Shearer CJ, Shapter JG, Voelcker NH. Micropatterned arrays of porous silicon: toward sensory biointerfaces. ACS APPLIED MATERIALS & INTERFACES 2011; 3:2463-2471. [PMID: 21699143 DOI: 10.1021/am2003526] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
We describe the fabrication of arrays of porous silicon spots by means of photolithography where a positive photoresist serves as a mask during the anodization process. In particular, photoluminescent arrays and porous silicon spots suitable for further chemical modification and the attachment of human cells were created. The produced arrays of porous silicon were chemically modified by means of a thermal hydrosilylation reaction that facilitated immobilization of the fluorescent dye lissamine, and alternatively, the cell adhesion peptide arginine-glycine-aspartic acid-serine. The latter modification enabled the selective attachment of human lens epithelial cells on the peptide functionalized regions of the patterns. This type of surface patterning, using etched porous silicon arrays functionalized with biological recognition elements, presents a new format of interfacing porous silicon with mammalian cells. Porous silicon arrays with photoluminescent properties produced by this patterning strategy also have potential applications as platforms for in situ monitoring of cell behavior.
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Affiliation(s)
- Benjamin S Flavel
- Centre for Nanoscale Science and Technology, School of Chemical and Physical Sciences, Flinders University, Sturt Road, Bedford Park, Adelaide, South Australia.
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Sam SS, Chazalviel JNJN, Gouget-Laemmel ACAC, Ozanam FF, Etcheberry AA, Gabouze NEN. Peptide immobilisation on porous silicon surface for metal ions detection. NANOSCALE RESEARCH LETTERS 2011; 6:412. [PMID: 21711937 PMCID: PMC3211508 DOI: 10.1186/1556-276x-6-412] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2010] [Accepted: 06/06/2011] [Indexed: 05/29/2023]
Abstract
In this work, a Glycyl-Histidyl-Glycyl-Histidine (GlyHisGlyHis) peptide is covalently anchored to the porous silicon PSi surface using a multi-step reaction scheme compatible with the mild conditions required for preserving the probe activity. In a first step, alkene precursors are grafted onto the hydrogenated PSi surface using the hydrosilylation route, allowing for the formation of a carboxyl-terminated monolayer which is activated by reaction with N-hydroxysuccinimide in the presence of a peptide-coupling carbodiimide N-ethyl-N'-(3-dimethylaminopropyl)-carbodiimide and subsequently reacted with the amino linker of the peptide to form a covalent amide bond. Infrared spectroscopy (FT-IR) and X-ray photoelectron spectroscopy are used to investigate the different steps of functionalization.The property of peptides to form stable complexes with metal ions is exploited to achieve metal-ion recognition by the peptide-modified PSi-based biosensor. An electrochemical study of the GlyHisGlyHis-modified PSi electrode is achieved in the presence of copper ions. The recorded cyclic voltammograms show a quasi-irreversible process corresponding to the Cu(II)/Cu(I) couple. The kinetic factors (the heterogeneous rate constant and the transfer coefficient) and the stability constant of the complex formed on the porous silicon surface are determined. These results demonstrate the potential role of peptides grafted on porous silicon in developing strategies for simple and fast detection of metal ions in solution.
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Affiliation(s)
- Sabrina S Sam
- UDTS, 2 bd Frantz Fanon, BP 140, Alger-7 Merveilles, Algiers, Algeria
| | | | | | - François F Ozanam
- Physique de la Matière Condensée, École Polytechnique, CNRS, 91128 Palaiseau, France
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Zhong YL, Bernasek SL. Mild and Efficient Functionalization of Hydrogen-Terminated Si(111) via Sonochemical Activated Hydrosilylation. J Am Chem Soc 2011; 133:8118-21. [DOI: 10.1021/ja2020839] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yu Lin Zhong
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
| | - Steven L. Bernasek
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
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32
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Manova R, van Beek TA, Zuilhof H. Oberflächenfunktionalisierung durch spannungsvermittelte Alkin-Azid-Klickreaktionen. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201100835] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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33
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Manova R, van Beek TA, Zuilhof H. Surface functionalization by strain-promoted alkyne-azide click reactions. Angew Chem Int Ed Engl 2011; 50:5428-30. [PMID: 21542073 DOI: 10.1002/anie.201100835] [Citation(s) in RCA: 77] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2011] [Indexed: 12/23/2022]
Affiliation(s)
- Radostina Manova
- Laboratory of Organic Chemistry, Wageningen University, Dreijenplein 8, 6703 HB Wageningen, The Netherlands
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34
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Puniredd SR, Assad O, Stelzner T, Christiansen S, Haick H. Catalyst-free functionalization for versatile modification of nonoxidized silicon structures. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:4764-4771. [PMID: 21425837 DOI: 10.1021/la2002546] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Here, we report on a simple, catalyst-free route for obtaining highly versatile subsequent functionalization on Si nanowires and Si(111) substrates. The versatility of this approach allows subsequent functionalization not only for organic species but also for inorganic (nanomaterial) species. The method has the advantage of controlling the density of reactive cross-linkers without affecting the stability of the Si samples and without having metallic (or catalyst) residues on the surface. This method also allows formation of monolayers with a variety of termination groups and is expected to open up a wide range of opportunities for producing stable molecule-based (opto)electronic and (bio)sensing devices. Immobilization of inorganic nanomaterial on the Si samples offers advanced opportunities in molecular switches, (bio)sensors, molecular scale memory, and Si-based nanoelectronic devices.
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Affiliation(s)
- Sreenivasa Reddy Puniredd
- The Department of Chemical Engineering and Russell Berrie Nanotechnology Institute, Technion-Israel Institute of Technology, Haifa 32000, Israel
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35
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Anti-fouling bioactive surfaces. Acta Biomater 2011; 7:1550-7. [PMID: 21195214 DOI: 10.1016/j.actbio.2010.12.021] [Citation(s) in RCA: 220] [Impact Index Per Article: 16.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2010] [Revised: 11/30/2010] [Accepted: 12/20/2010] [Indexed: 01/15/2023]
Abstract
Bioactive surfaces refer to surfaces with immobilized bioactive molecules aimed specifically at promoting or supporting particular interactions. Such surfaces are of great importance for various biomedical and biomaterials applications. In the past few years, considerable effort has been made to create bioactive surfaces by forming specific biomolecule-modified surfaces on a non-biofouling "base" or "background". Hydrophilic and bioinert polymers have been widely used as anti-fouling layers that resist non-specific protein interactions. They can also serve as "spacers" to effectively move the immobilized biomolecule away from the surface, thus enhancing its bioactivity. In this review we summarize several successful approaches for the design and preparation of bioactive surfaces based on different types of anti-fouling/spacer materials. Some perspectives on future research in this area are also presented.
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Touahir L, Allongue P, Aureau D, Boukherroub R, Chazalviel JN, Galopin E, Gouget-Laemmel A, de Villeneuve CH, Moraillon A, Niedziółka-Jönsson J, Ozanam F, Andresa JS, Sam S, Solomon I, Szunerits S. Molecular monolayers on silicon as substrates for biosensors. Bioelectrochemistry 2010; 80:17-25. [DOI: 10.1016/j.bioelechem.2010.03.011] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2010] [Revised: 03/12/2010] [Accepted: 03/18/2010] [Indexed: 10/19/2022]
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38
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Scheres L, Klingebiel B, ter Maat J, Giesbers M, de Jong H, Hartmann N, Zuilhof H. Micro- and nanopatterning of functional organic monolayers on oxide-free silicon by laser-induced photothermal desorption. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2010; 6:1918-1926. [PMID: 20677184 DOI: 10.1002/smll.201000189] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
The photothermal laser patterning of functional organic monolayers, prepared on oxide-free hydrogen-terminated silicon, and subsequent backfilling of the laser-written lines with a second organic monolayer that differs in its terminal functionality, is described. Since the thermal monolayer decomposition process is highly nonlinear in the applied laser power density, subwavelength patterning of the organic monolayers is feasible. After photothermal laser patterning of hexadecenyl monolayers, the lines freed up by the laser are backfilled with functional acid fluoride monolayers. Coupling of cysteamine to the acid fluoride groups and subsequent attachment of Au nanoparticles allows easy characterization of the functional lines by atomic force microscopy (AFM) and scanning electron microscopy (SEM). Depending on the laser power and writing speed, functional lines with widths between 1.1 μm and 250 nm can be created. In addition, trifluoroethyl-terminated (TFE) monolayers are also patterned. Subsequently, the decomposed lines are backfilled with a nonfunctional hexadecenyl monolayer, the TFE stripes are converted into thiol stripes, and then finally covered with Au nanoparticles. By reducing the lateral distance between the laser lines, Au-nanoparticle stripes with widths close to 100 nm are obtained. Finally, in view of the great potential of this type of monolayer in the field of biosensing, the ease of fabricating biofunctional patterns is demonstrated by covalent binding of fluorescently labeled oligo-DNA to acid-fluoride-backfilled laser lines, which--as shown by fluorescence microscopy--is accessible for hybridization.
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Affiliation(s)
- Luc Scheres
- Laboratory of Organic Chemistry, Wageningen University, Dreijenplein 8, Wageningen 6703 HB, The Netherlands
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Multistep Anchoring Route of Luminescent (5-Amino-1,10-phenanthroline)tris(dibenzoylmethane)europium(III) on Si(100). Eur J Inorg Chem 2010. [DOI: 10.1002/ejic.201000272] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Scheres L, ter Maat J, Giesbers M, Zuilhof H. Microcontact printing onto oxide-free silicon via highly reactive acid fluoride-functionalized monolayers. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2010; 6:642-650. [PMID: 20143349 DOI: 10.1002/smll.200901650] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
This work describes a new route for patterning organic monolayers on oxide-free silicon by microcontact printing (microCP) on a preformed, reactive, acid-fluoride-terminated monolayer. This indirect printing approach is fast and easily preserves the oxide-free and well-defined monolayer-silicon interface, which is the most important property for potential applications in biosensing and molecular electronics. Water-contact-angle measurements, ellipsometry, attenuated total reflection infrared spectroscopy, and X-ray photoelectron spectroscopy (XPS) demonstrate the formation of the initial acid-fluoride-terminated monolayers without upside-down attachment. Subsequent printing for twenty seconds with an N-hexadecylamine-inked poly(dimethylsiloxane) stamp results in well-defined 5-microm N-hexadecylamide dots, as evidenced by atomic force microscopy and scanning electron microscopy. Printing with a flat stamp allows investigation of the efficiency of amide formation by microCP and water-contact-angle measurements, ellipsometry, and XPS reveal the quantitative conversion of the acid fluoride groups to the corresponding amide within twenty seconds. The absence of silicon oxide, even after immersion in water for 16 h, demonstrates that the oxide-free monolayer-silicon interface is easily preserved by this patterning route. Finally, it is shown by fluorescence microscopy that complex biomolecules, like functionalized oligo-DNA, can also be immobilized on the oxide-free silicon surface via microCP.
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Affiliation(s)
- Luc Scheres
- Laboratory of Organic Chemistry, Wageningen University Dreijenplein 8, Wageningen, 6703 HB, The Netherlands
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Sam S, Touahir L, Salvador Andresa J, Allongue P, Chazalviel JN, Gouget-Laemmel AC, Henry de Villeneuve C, Moraillon A, Ozanam F, Gabouze N, Djebbar S. Semiquantitative study of the EDC/NHS activation of acid terminal groups at modified porous silicon surfaces. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:809-14. [PMID: 19725548 DOI: 10.1021/la902220a] [Citation(s) in RCA: 214] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Infrared spectroscopy is used to investigate the transformation of carboxyl-terminated alkyl chains immobilized on a surface into succinimidyl ester-terminated chains by reaction with an aqueous solution of N-ethyl-N'-(3-(dimethylamino)propyl)carbodiimide (EDC) and N-hydroxysuccinimide (NHS). The acid chains are covalently grafted at the surface of hydrogenated porous silicon whose large specific surface area allows for assessing the activation yield in a semiquantitative way by infrared (IR) spectroscopy and detecting trace amounts of surface products and/or reaction products of small IR cross section. In this way, we rationalize the different reaction paths and optimize the reaction conditions to obtain as pure as possible succinimidyl ester-terminated surfaces. A diagram mapping the surface composition after activation was constructed by systematically varying the solution composition. Results are accounted for by NHS surface adsorption and a kinetic competition between the various EDC-induced surface reactions.
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Affiliation(s)
- S Sam
- Physique de la Matière Condensée, Ecole Polytechnique, CNRS, 91128 Palaiseau, France
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Rosso M, Giesbers M, Schroën K, Zuilhof H. Controlled oxidation, biofunctionalization, and patterning of alkyl monolayers on silicon and silicon nitride surfaces using plasma treatment. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:866-872. [PMID: 19728734 DOI: 10.1021/la9023103] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
A new method is presented for the fast and reproducible functionalization of silicon and silicon nitride surfaces coated with covalently attached alkyl monolayers. After formation of a methyl-terminated 1-hexadecyl monolayer on H-terminated Si(100) and Si(111) surfaces, short plasma treatments (1-3 s) are sufficient to create oxidized functionalities without damaging the underlying oxide-free silicon. The new functional groups can, e.g., be derivatized using the reaction of surface aldehyde groups with primary amines to form imine bonds. In this way, plasma-treated monolayers on silicon or silicon nitride surfaces were successfully coated with nanoparticles, or proteins such as avidin. In addition, we demonstrate the possibility of micropatterning, using a soft contact mask during the plasma treatment. Using water contact angle measurements, ellipsometry, XPS, IRRAS, AFM, and reflectometry, proof of principle is demonstrated of a yet unexplored way to form patterned alkyl monolayers on oxide-free silicon surfaces.
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Affiliation(s)
- Michel Rosso
- Laboratory of Organic Chemistry, Wageningen University, Dreijenplein 8, 6703 HB Wageningen, The Netherlands
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Ciampi S, Harper JB, Gooding JJ. Wet chemical routes to the assembly of organic monolayers on silicon surfaces via the formation of Si–C bonds: surface preparation, passivation and functionalization. Chem Soc Rev 2010; 39:2158-83. [DOI: 10.1039/b923890p] [Citation(s) in RCA: 263] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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Bart J, Tiggelaar R, Yang M, Schlautmann S, Zuilhof H, Gardeniers H. Room-temperature intermediate layer bonding for microfluidic devices. LAB ON A CHIP 2009; 9:3481-8. [PMID: 20024026 DOI: 10.1039/b914270c] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
In this work a novel room-temperature bonding technique based on chemically activated Fluorinated Ethylene Propylene (FEP) sheet as an intermediate between chemically activated substrates is presented. Surfaces of silicon and glass substrates are chemically modified with APTES bearing amine terminal groups, while FEP sheet surfaces are treated to form carboxyl groups and subsequently activated by means of EDC-NHS chemistry. The activation procedures of silicon, glass and FEP sheet are characterized by contact angle measurements and XPS. Robust bonds are created at room-temperature by simply pressing two amine-terminated substrates together with activated FEP sheet in between. Average tensile strengths of 5.9 MPa and 5.2 MPa are achieved for silicon-silicon and glass-glass bonds, respectively, and the average fluidic pressure that can be operated is 10.2 bar. Moreover, it is demonstrated that FEP-bonded microfluidic chips can handle mild organic solvents at elevated pressures without leakage problems. This versatile room-temperature intermediate layer bonding technique has a high potential for bonding, packaging, and assembly of various (bio-) chemical microfluidic systems and MEMS devices.
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Affiliation(s)
- Jacob Bart
- Mesoscale Chemical Systems, MESA+ Institute for Nanotechnology, University of Twente, PO Box 217, 7500 AE Enschede, The Netherlands
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Yang M, Wouters D, Giesbers M, Schubert US, Zuilhof H. Local probe oxidation of self-assembled monolayers on hydrogen-terminated silicon. ACS NANO 2009; 3:2887-900. [PMID: 19754133 DOI: 10.1021/nn9007059] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Local probe oxidation experiments by conductive AFM have been performed on a hexadecyl monolayer and a N-hydroxysuccinimide (NHS)-ester-functionalized undecyl (NHS-UA) monolayer assembled on hydrogen-terminated (i.e., unoxidized) silicon. The oxidation conditions for the mild oxidation of the top terminal groups of monolayers and the deep oxidation of the underlying silicon into silicon oxide were investigated. The results show that the bias threshold for the AFM tip-induced oxidation of the top groups of monolayers on oxide-free silicon can be reduced by 2 V for the methyl-terminated hexadecyl monolayer and even by 3.5 V for the active NHS-ester-terminated undecyl monolayer, in comparison to a methyl-terminated octadecyl trichlorosilane (OTS) monolayer on oxidized silicon. Upon such local mild oxidation, the active NHS ester group of the NHS-UA monolayer is selectively cleaved off to generate carboxyl-containing monolayer nanopatterns, opening further possibilities for subsequent patterned multifunctionalization.
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Affiliation(s)
- Menglong Yang
- Laboratory of Organic Chemistry, Wageningen University, Dreijenplein 8, 6703 HB Wageningen, The Netherlands
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Rosso M, Giesbers M, Arafat A, Schroën K, Zuilhof H. Covalently attached organic monolayers on SiC and SixN4 surfaces: formation using UV light at room temperature. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2009; 25:2172-2180. [PMID: 19146429 DOI: 10.1021/la803094y] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
We describe the formation of alkyl monolayers on silicon carbide (SiC) and silicon-rich silicon nitride (SixN4) surfaces, using UV irradiation in the presence of alkenes. Both the surface preparation and the monolayer attachment were carried out under ambient conditions. The stable coatings obtained in this way were studied by water contact angle measurements, infrared reflection absorption spectroscopy, X-ray reflectivity, and X-ray photoelectron spectroscopy. Besides unfunctionalized 1-alkenes, methyl undec-10-enoate, and 2,2,2-trifluoroethyl undec-10-enoate were also grafted onto both substrates. The resulting ester-terminated surfaces could then be further reacted after hydrolysis using amide chemistry to easily allow the attachment of amine-containing compounds.
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Affiliation(s)
- Michel Rosso
- Laboratory of Organic Chemistry, Wageningen University, Wageningen, The Netherlands
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Hong Q, Rogero C, Lakey JH, Connolly BA, Houlton A, Horrocks BR. Immobilisation of proteins at silicon surfaces using undecenylaldehyde: demonstration of the retention of protein functionality and detection strategies. Analyst 2009; 134:593-601. [DOI: 10.1039/b813328j] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Puniredd SR, Assad O, Haick H. Highly Stable Organic Monolayers for Reacting Silicon with Further Functionalities: The Effect of the C−C Bond nearest the Silicon Surface. J Am Chem Soc 2008; 130:13727-34. [DOI: 10.1021/ja804674z] [Citation(s) in RCA: 93] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sreenivasa Reddy Puniredd
- The Department of Chemical Engineering and Russell Berrie Nanotechnology Institute, Technion—Israel Institute of Technology, Haifa 32000, Israel
| | - Ossama Assad
- The Department of Chemical Engineering and Russell Berrie Nanotechnology Institute, Technion—Israel Institute of Technology, Haifa 32000, Israel
| | - Hossam Haick
- The Department of Chemical Engineering and Russell Berrie Nanotechnology Institute, Technion—Israel Institute of Technology, Haifa 32000, Israel
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