Surfix BV

Wageningen, Netherlands

Surfix BV

Wageningen, Netherlands
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Grant
Agency: European Commission | Branch: FP7 | Program: CP | Phase: ICT-2013.3.3 | Award Amount: 3.09M | Year: 2013

In the milk industry, one of most pressing unmet needs is the timely detection of mycotoxins that originate from animal feed and are secreted into milk. In particular, milk and dairy products can be contaminated by aflatoxin M1, a potent carcinogen. The aflatoxin contamination represents a hazard for human health and an economic loss for the dairy industry. The available technology for aflatoxin detection is i) laboratory-based, ii) requires sample preparation, iii) does not provide timely identification of the carcinogen, thus iv) fails to deliver cost-effective management of contaminated milk.In this context, the SYMPHONY project aims to overcome these limitations by the integration of heterogeneous technologies, encompassing photonics, microfluidics and system integration, in a miniaturised smart system that will perform low cost label free detection of aflatoxin in milk and prevent infection of dairy products. The main goal is to produce an automated sampling and analysis system to be used on-line in Hazard Analysis and Critical Control Points (HACCP). In our strategy the following key enabling technologies will converge:1) microfluidic technologies and biochemistry, to provide a miniaturised device capable of sample purification and pre-concentration by using the selectivity of aptamers and antibodies;2) photonic resonators integrated in microsystem technologies, for highly sensitive detection;3) compact hardware for the integration in the production chain and communication interfaces compatible with the information system of the industry.In our vision, the system will represent a breakthrough for the dairy industry, leading toward precision process management. The smart system will be assessed on site and end-users will be involved in the evaluation of technical results, thus creating a close collaboration between SMEs who supply sensors, systems and microsystems, and to improve the exploitation of MNBS in industrial settings.


Research and Markets has announced the addition of the "The Nanocoatings Global Opportunity Report" report to their offering. 'The Nanocoatings Global Opportunity Report' examines a market that is already providing significant economic, hygiene and environmental benefit for sectors such as consumer electronics, construction, medicine & healthcare, textiles, oil & gas, infrastructure and aviation. Research and development in nanotechnology and nanomaterials is now translating into tangible consumer products, providing new functionalities and opportunities in industries such as electronics, sporting goods, wearable electronics, textiles, construction etc. A recent example is quantum dot TVs, a multi-billion dollar boon for the High-definition TV market. Countless other opportunities exist for exploiting the exceptional properties of nanomaterials and these will increase as costs come down and production technologies improve. The incorporation of nanomaterials into thin films, coatings and surfaces leads to new functionalities, completely innovative characteristics and the possibility to achieve multi-functional coatings and smart coatings. The use of nanomaterials also results in performance enhancements in wear, corrosion-wear, fatigue and corrosion resistant coatings. Nanocoatings demonstrate significant enhancement in outdoor durability and vastly improved hardness and flexibility compared to traditional coatings. - Oil and gas - - Corrosion and scaling chemical inhibitors. - - Self-healing coatings. - - Smart coatings. - - Coatings for hydraulic fracturing. - Aerospace & aviation - - Shape memory coatings. - - Corrosion resistant coatings for aircraft parts. - - Thermal protection. - - Novel functional coatings for prevention of ice-accretion and insect-contamination. - Renewable energy - - Anti-fouling protective coatings for offshore marine structures. - - Anti-reflective solar module coatings. - - Ice-phobic wind turbines. - - Coatings for solar heating and cooling. - Automotive - - Anti-fogging nanocoatings and surface treatments. - - Improved mar and scratch resistance. - - Flexible glass. - - Corrosion prevention. - - Multi-functional glazing. - - Smart surfaces. - - Surface texturing technologies with enhanced gloss. - - New decorative and optical films. - - Self-healing. - Textiles & Apparel - - Sustainable coatings. - - High UV protection. - - Smart textiles. - - Electrically conductive textiles. - - Enhanced durability and protection. - - Anti-bacterial and self-cleaning. - - Water repellent while maintaining breathability.. - Medical - - Hydrophilic lubricious, hemocompatible, and drug delivery coatings. - - Anti-bacterial coatings to prevent bacterial adhesion and biofilm formation. - - Hydrophobic and super-hydrophobic coatings. - - Lubricant coatings. - - Protective implant coatings. - - High hardness coatings for medical implants. - - Infection control. - - Antimicrobial protection or biocidic activity. - Marine - - Anti-fouling and corrosion control coatings systems. - - Reduced friction coatings. - - Underwater hull coatings. - Buildings - - Thermochromic smart windows. - - Anti-reflection glazing. - - Self-cleaning surfaces. - - Passive cooling surfaces. - - Air-purifying. - Consumer electronics - - Waterproof electronic devices. - - Anti-fingerprint touchscreens. - Global market size for target markets - Addressable markets for nanocoatings, by nanocoatings type and industry - Estimated market revenues for nanocoatings to 2025 - 300 company profiles including products and target markets 1 Executive Summary 1.1 High performance coatings 1.2 Nanocoatings 1.3 Market drivers and trends 1.4 Market size and opportunity 1.5 Market and technical challenges 2 Introduction 2.1 Properties of nanomaterials 2.2 Categorization 2.3 Nanocoatings 2.4 Hydrophobic coatings and surfaces 2.5 Superhydrophobic coatings and surfaces 2.6 Oleophobic and omniphobic coatings and surfaces 6 Market Segment Analysis, By Coatings Type 6.1 Anti-Fingerprint Nanocoatings 6.2 Anti-Microbial Nanocoatings 6.3 Anti-Corrosion Nanocoatings 6.4 Abrasion & Wear-Resistant Nanocoatings 6.5 Barrier Nanocoatings 6.6 Anti-Fouling And Easy-To-Clean Nanocoatings 6.7 Self-Cleaning (Bionic) Nanocoatings 6.8 Self-Cleaning (Photocatalytic) Nanocoatings 6.9 Uv-Resistant Nanocoatings 6.10 Thermal Barrier And Flame Retardant Nanocoatings 6.11 Anti-Icing And De-Icing 6.12 Anti-Reflective Nanocoatings 6.13 Other Nanocoatings Types 7 Market Segment Analysis, By End User Market 7.1 Aerospace 7.2 Automotive 7.3 Construction, Architecture And Exterior Protection 7.4 Electronics 7.5 Household Care, Sanitary And Indoor Air Quality 7.6 Marine 7.7 Medical & Healthcare 7.8 Military And Defence 7.9 Packaging 7.10 Textiles And Apparel 7.11 Renewable Energy 7.12 Oil And Gas Exploration 7.13 Tools And Manufacturing 7.14 Anti-Counterfeiting - 3M - Abrisa Technologies - Accucoat, inc - Aculon, Inc - Acreo Engineering - ACTNano, inc - Advanced Materials-JTJ S.R.O - Advanced Silicon Group - Advenira Enterprises, Inc - Aeonclad Coatings - agPolymer S.r.l - Agienic Antimicrobials - Agion Technologies, Inc - AkzoNobel - Albert Rechtenbacher GmbH - ALD Nanosolutions, Inc - Alexium, Inc - AM Coatings - Analytical Services & Materials, Inc - Ancatt - Applied Nanocoatings, Inc - Applied Nano Surfaces - Applied Sciences, Inc - Applied Thin Films, Inc - ARA-Authentic GmbH - Asahi Glass Co., Ltd - Autonomic Materials - Aurolab - Avaluxe International GmbH - Bactiguard AB - BASF Corporation - Battelle - Beijing ChamGo Nano-Tech Co., Ltd., - Beneq OY - BigSky Technologies LLC - Biocote Ltd - Bio-Gate AG - Bioni CS GmbH - Bionic Technology Holding BV - Boral Limited - Buhler Partec - BYK-Chemie GmbH - California Nanotechnologies Corporation - Cambridge Nanotherm Limited - Cambrios Technologies Corporation - Canatu Oy - Carbodeon Ltd. Oy - Ceko Co., Ltd - Cellutech AB - CeNano GmbH & Co. KG - Cellmat Technologies S.L - Centrosolar Glas GmbH Co. KG - Cetelon Nanotechhnik GmbH - CG2 Nanocoatings, Inc - Cima Nanotech - Clarcor Industrial Air - Clariant Produkte (Deutschland) GmbH - Cleancorp Nanocoatings - Clearbridge Technologies Pte. Ltd - Clearjet Ltd - Clou - CMR Coatings GmbH - CNM Technologies GmbH - Coating Suisse GmbH - Corning, Incorporated - Cotec GmbH - Coval Molecular Coatings - Crossroads Coatings - CSD Nano, Inc - CTC Nanotechnology GmbH - C3 Nano - Cytonix CLLC - Daicel FineChem Limited - Daikin Industries, ltd - Diamon-Fusion International, Inc - Diarc-Technology Oy - DFE Chemie GmbH - Dow Corning - Dropwise Technologies Corporation - DryWired - Dry Surface Technologies LLC - DSP Co., Ltd - Duralar Technologies - Duraseal Coatings - Eeonyx Corporation - Eikos, Inc - Engineered Nanoproducts Germany AG - Enki Technology - Envaerospace, Inc - Eurama Corporation - Europlasma NV - Excel Coatings - Evonik Hanse - Few Chemicals GmbH - FN Nano, Inc - ForgeNano - Formacoat - Fujifilm - Fumin - FutureCarbon GmbH - Future Nanocoatings - General Paints - Green Earth nano Science, Inc - Green Millenium, Inc - Grenoble INP-Pagora - Grupo Repol - GSI Creos - GVD Corporation - GXC Coatings - Hanita Coatings - Hardide Coatings - HeiQ Materials AG - Hemoteq GmbH - Henkel AG & Co. KGaA - Hexis S.A - Hiab Products - Hitachi Chemical - Honeywell International, Inc - Hy-Power Nano, Inc - HzO, Inc - Hygratek, LLC - iFyber, LLC - Imbed Biosciences, Inc - Imerys - Industrial Nanotech, Inc - Inframat Corporation - INM - Leibniz Institute for New Materials - InMat, Inc - InMold Biosystems - Innovcoat Nanocoatings and Surface Technologies Inc - Inno-X - Innventia AB - Inspiraz Technology pte LTd - Instrumental Polymer Technologies LLC - Ishihara Sangyo Kaisha, Ltd - Integrated Surface Technologies, Inc - Integran Technologies, Inc - Integricote - Interlotus Nanotechnologie GmbH - Intumescents Associates Group - ISTN, Inc - ISurTech - ITN Nanovation AG - Izovac Ltd - JNC Corporation - Joma International AS - Jotun Protective Coatings - Kaneka Corporation - Klockner Pentaplast Europe GmbH & Co. KG - Kon Corporation - Kriya Materials B.V - Laiyang Zixilai Environment Protection Technology Co., Ltd - Life Air Iaq Ltd - Lintec of America, Inc., - Liquiglide, Inc - Liquipel, LLC - Lofec Nanocoatings - Lotus Applied Technology - Lotus Leaf Coatings - Luna Innovtions - Magnolia Solar - MDS Coating Technologies Corporation - Melodea - Merck Performance Materials - Mesocoat, Inc - Metal Estalki - Millidyne Oy - MMT Textiles Limited - Modumetal, Inc - Molecular Rebar - Muschert - N2 Biomedical - Naco Technologies, Inc - Nadico Technologie GmbH - Nagase & Co - Nanohygienix LLC - Namos GmbH - Nanobiomatters S.I - Nano-care AG - NanoCover A/S - Nanocure GmbH - Nanocyl - Nanofilm, Ltd - Nano Frontier Technology - Nanoex Company - Nanogate AG - Nanohmics - Nanohorizons, Inc - Nanokote Pty Ltd - Nanomate Technology - Nano Labs Corporation - NanoLotus Scandanavia Aps - Nanomembrane - NanoPack, Inc - NanoPhos SA - Nanopool GmbH - Nanops - Nanoservices BV - Nanoshell Ltd - Nanosol AG - Nanosonic, Inc - The NanoSteel Company, Inc - Nano Surface Solutions - NanoSys GmbH - Nanotech Security Corporation - Nano-Tex, Inc - NanoTouch Materials, LLC - Nanovere Technologies, LLC - Nanovis Incorporated - Nanoveu Pte. LTD - Nanowave Co., Ltd - Nano-X GmbH - Nanoyo Group Pte Ltd - Nanto Protective Coating - NBD Nano - NEI Corporation - Nelum Sciences LLC - Nelumbo - Neverwet LLC - NGimat - NIL Technology ApS - Nissan Chemical Industries Ltd - NOF Corporation - NTC Nanotech Coatings GmbH - n-tec GmbH - NTT Advanced Technology Corporation - Oceanit - Opticote Inc - Optics Balzers Ag - Optitune International Pte - Organiclick AB - Oxford Advanced SUrfaces - P2i Ltd - Panahome Corporation - Percenta AG - Perpetual Technologies, Inc - Philippi-Hagenbuch, Inc - Picosun Oy - Pioneer Medical Devices GmbH - Pneumaticicoat Technologies - PJI Contract Pte Ltd - Polymerplus, LLC - Powdermet, Inc - PPG Industries - Promimic AB - Pureti, Inc - Quantiam Technologies, Inc, - RBNano - Reactive Surfaces, LLP - Resodyn Corporation - Rochling Engineering Plastics - Royal DSM N.V - Saint-Gobain Glass - Sandvik Materials Technology - Sarastro GmbH - Schott AG - Seashell Technology LLC-Hydrobead - Semblant - Shandong Huimin Science & Technology Co., Ltd - Sharklet Technologies, Inc - Shin-Etsu Silicones - SHM - Sioen Industries NV - SiO2 Nanotech, LLC - Sketch Co., Ltd - Slips Technology - Sono-Tek Corporation - Spartan Nano Ltd - Starfire Systems, inc - Sub-One Technology, INc - Sumitomo Electric Hard-Metal Ltd - Suncoat GmbH - SupraPolix BV - SurfaceSolutions GmbH - Surfactis Technologies SAS - Surfatek LLC - Surfix BV - Suzhou Super Nano-Textile Teco Co - Takenake Seisakusho Co., Ltd - Tesla Nanocoatings - Theta Coatings - TNO - TopChim NV - Topasol LLC - Toray Advanced Film Co., Ltd - Toto - TripleO Performance Solution - Ultratech International, Inc - Vadlau GmbH - Valentis Nanotech - Vestagen Protective Technologies, Inc - Viriflex - VTT Technical Research Center - Wacker Chemie AG - Wattglass, LLC - Well Shield LLC - Zschimmer & Schwarz For more information about this report visit http://www.researchandmarkets.com/research/4ktr5t/the_nanocoatings Research and Markets is the world's leading source for international market research reports and market data. We provide you with the latest data on international and regional markets, key industries, the top companies, new products and the latest trends.


Grant
Agency: European Commission | Branch: FP7 | Program: CP | Phase: ICT-2013.3.3 | Award Amount: 3.73M | Year: 2013

Current methodologies for detection of food contamination based on heavy analytical tools cannot guarantee a safe and stable food supply. The reasons are the complexity, the long time-to-result (2-3 days) and the cost of these tools, which limit the number of samples that can be practically analyzed at food processing and storage sites. The need for screening tools that will be still reliable but simple, fast, low-cost, sensitive and portable for in-situ application is thus urgent. BIOFOS aims to address this need through a high-added value, reusable biosensor system based on optical interference and lab-on-a-chip (LoC) technology.To do this, BIOFOS will combine the most promising concepts from the photonic, biological, nanochemical and fluidic parts of LoC systems, aiming to overcome limitations related to sensitivity, specificity, reliability, compactness and cost issues. BIOFOS will rely on the ultra-low loss TriPleX photonic platform in order to integrate on a 4x5 mm2 chip 8 micro-ring resonators, a VCSEL and 16 Si photodiodes, and achieve a record detection limit in the change of the refractive index of 510-8 RIU. To support reusability and high specificity, it will rely on aptamers as biotransducers, targeting at chips for 30 uses. Advanced surface functionalization techniques will be used for the immobilization of aptamers, and new microfluidic structures will be introduced for the sample pre-treatment and the regeneration process. BIOFOS will assemble the parts in a 5x10x10 cm3 package for a sample-in-result-out, multi-analyte biosensor. The system will be validated in real settings against antibiotics, mycotoxins, pesticides and copper in milk, olive oil and nuts, aiming at detection below the legislation limits and time-to-result only 5 minutes. Based on the reusability concept, BIOFOS also aims at reducing the cost per analysis by at least a factor of 10 in the short- and 30 in the mid-term, paving the way for the commercial success of the technology.


This report studies Flexible Glass in Global market, especially in North America, Europe, China, Japan, Southeast Asia and India, focuses on top manufacturers in global market, with capacity, production, price, revenue and market share for each manufacturer, covering  Asahi Glass Co. Ltd.  Corning Inc.  Nippon Electric  Buhler  Nanogate  Nanophase Technologies Corporation  AdMat Innovations  Surfix  Nanomech  CIMA Nanotech  P2I Ltd  Nanovere Technologies  Integran Technologies  Nanofilm Market Segment by Regions, this report splits Global into several key Regions, with production, consumption, revenue, market share and growth rate of Flexible Glass in these regions, from 2011 to 2021 (forecast), like  North America  Europe  China  Japan  Southeast Asia  India Split by product type, with production, revenue, price, market share and growth rate of each type, can be divided into  Type I  Type II  Type III Split by application, this report focuses on consumption, market share and growth rate of Flexible Glass in each application, can be divided into  Display Marker  PV Market  OLED Market  Other 1 Flexible Glass Market Overview  1.1 Product Overview and Scope of Flexible Glass  1.2 Flexible Glass Segment by Type  1.2.1 Global Production Market Share of Flexible Glass by Type in 2015  1.2.2 Type I  1.2.3 Type II  1.2.4 Type III  1.3 Flexible Glass Segment by Application  1.3.1 Flexible Glass Consumption Market Share by Application in 2015  1.3.2 Display Marker  1.3.3 PV Market  1.3.4 OLED Market  1.3.5 Other  1.4 Flexible Glass Market by Region  1.4.1 North America Status and Prospect (2011-2021)  1.4.2 Europe Status and Prospect (2011-2021)  1.4.3 China Status and Prospect (2011-2021)  1.4.4 Japan Status and Prospect (2011-2021)  1.4.5 Southeast Asia Status and Prospect (2011-2021)  1.4.6 India Status and Prospect (2011-2021)  1.5 Global Market Size (Value) of Flexible Glass (2011-2021) 2 Global Flexible Glass Market Competition by Manufacturers  2.1 Global Flexible Glass Capacity, Production and Share by Manufacturers (2015 and 2016)  2.2 Global Flexible Glass Revenue and Share by Manufacturers (2015 and 2016)  2.3 Global Flexible Glass Average Price by Manufacturers (2015 and 2016)  2.4 Manufacturers Flexible Glass Manufacturing Base Distribution, Sales Area and Product Type  2.5 Flexible Glass Market Competitive Situation and Trends  2.5.1 Flexible Glass Market Concentration Rate  2.5.2 Flexible Glass Market Share of Top 3 and Top 5 Manufacturers  2.5.3 Mergers & Acquisitions, Expansion 3 Global Flexible Glass Capacity, Production, Revenue (Value) by Region (2011-2016)  3.1 Global Flexible Glass Capacity and Market Share by Region (2011-2016)  3.2 Global Flexible Glass Production and Market Share by Region (2011-2016)  3.3 Global Flexible Glass Revenue (Value) and Market Share by Region (2011-2016)  3.4 Global Flexible Glass Capacity, Production, Revenue, Price and Gross Margin (2011-2016)  3.5 North America Flexible Glass Capacity, Production, Revenue, Price and Gross Margin (2011-2016)  3.6 Europe Flexible Glass Capacity, Production, Revenue, Price and Gross Margin (2011-2016)  3.7 China Flexible Glass Capacity, Production, Revenue, Price and Gross Margin (2011-2016)  3.8 Japan Flexible Glass Capacity, Production, Revenue, Price and Gross Margin (2011-2016)  3.9 Southeast Asia Flexible Glass Capacity, Production, Revenue, Price and Gross Margin (2011-2016)  3.10 India Flexible Glass Capacity, Production, Revenue, Price and Gross Margin (2011-2016) 4 Global Flexible Glass Supply (Production), Consumption, Export, Import by Regions (2011-2016)  4.1 Global Flexible Glass Consumption by Regions (2011-2016)  4.2 North America Flexible Glass Production, Consumption, Export, Import by Regions (2011-2016)  4.3 Europe Flexible Glass Production, Consumption, Export, Import by Regions (2011-2016)  4.4 China Flexible Glass Production, Consumption, Export, Import by Regions (2011-2016)  4.5 Japan Flexible Glass Production, Consumption, Export, Import by Regions (2011-2016)  4.6 Southeast Asia Flexible Glass Production, Consumption, Export, Import by Regions (2011-2016)  4.7 India Flexible Glass Production, Consumption, Export, Import by Regions (2011-2016) 7 Global Flexible Glass Manufacturers Profiles/Analysis  7.1 Asahi Glass Co. Ltd.  7.1.1 Company Basic Information, Manufacturing Base and Its Competitors  7.1.2 Flexible Glass Product Type, Application and Specification  7.1.2.1 Type I  7.1.2.2 Type II  7.1.3 Asahi Glass Co. Ltd. Flexible Glass Capacity, Production, Revenue, Price and Gross Margin (2015 and 2016)  7.1.4 Main Business/Business Overview  7.2 Corning Inc.  7.2.1 Company Basic Information, Manufacturing Base and Its Competitors  7.2.2 Flexible Glass Product Type, Application and Specification  7.2.2.1 Type I  7.2.2.2 Type II  7.2.3 Corning Inc. Flexible Glass Capacity, Production, Revenue, Price and Gross Margin (2015 and 2016)  7.2.4 Main Business/Business Overview  7.3 Nippon Electric  7.3.1 Company Basic Information, Manufacturing Base and Its Competitors  7.3.2 Flexible Glass Product Type, Application and Specification  7.3.2.1 Type I  7.3.2.2 Type II


Fabre B.,CNRS Chemistry Institute of Rennes | Pujari S.P.,Wageningen University | Scheres L.,Wageningen University | Scheres L.,Surfix B.V | And 2 more authors.
Langmuir | Year: 2014

The effect of the size of patterns of micropatterned ferrocene (Fc)-functionalized, oxide-free n-type Si(111) surfaces was systematically investigated by electrochemical methods. Microcontact printing with amine-functionalized Fc derivatives was performed on a homogeneous acid fluoride-terminated alkenyl monolayer covalently bound to n-type H-terminated Si surfaces to give Fc patterns of different sizes (5 × 5, 10 × 10, and 20 × 20 μm2), followed by backfilling with n-butylamine. These Fc-micropatterned surfaces were characterized by static water contact angle measurements, ellipsometry, X-ray photoelectron spectroscopy (XPS), infrared reflection-absorption spectroscopy (IRRAS), atomic force microscopy (AFM), and scanning electron microscopy (SEM). The charge-transfer process between the Fc-micropatterned and underlying Si interface was subsequently studied by cyclic voltammetry and capacitance. By electrochemical studies, it is evident that the smallest electroactive ferrocenyl patterns (i.e., 5 × 5 μm2 squares) show ideal surface electrochemistry, which is characterized by narrow, perfectly symmetric, and intense cyclic voltammetry and capacitance peaks. In this respect, strategies are briefly discussed to further improve the development of photoswitchable charge storage microcells using the produced redox-active monolayers. © 2014 American Chemical Society.


Pujari S.P.,Wageningen University | Scheres L.,Surfix B.V. | Marcelis A.T.M.,Wageningen University | Zuilhof H.,Wageningen University | Zuilhof H.,King Abdulaziz University
Angewandte Chemie - International Edition | Year: 2014

The modification of surfaces by the deposition of a robust overlayer provides an excellent handle with which to tune the properties of a bulk substrate to those of interest. Such control over the surface properties becomes increasingly important with the continuing efforts at down-sizing the active components in optoelectronic devices, and the corresponding increase in the surface area/volume ratio. Relevant properties to tune include the degree to which a surface is wetted by water or oil. Analogously, for biosensing applications there is an increasing interest in so-called "romantic surfaces": surfaces that repel all biological entities, apart from one, to which it binds strongly. Such systems require both long lasting and highly specific tuning of the surface properties. This Review presents one approach to obtain robust surface modifications of the surface of oxides, namely the covalent attachment of monolayers. © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.


Rijksen B.,Wageningen University | Pujari S.P.,Wageningen University | Scheres L.,Wageningen University | Scheres L.,SurfiX B.V. | And 5 more authors.
Langmuir | Year: 2012

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-Cî - C-HCî - 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. © 2012 American Chemical Society.


Pujari S.P.,Wageningen University | Scheres L.,Surfix B.V. | Van Lagen B.,Wageningen University | Zuilhof H.,Wageningen University | Zuilhof H.,King Abdulaziz University
Langmuir | Year: 2013

Strategies to modify chromium nitride (CrN) surfaces are important because of the increasing applications of these materials in various areas such as hybrid electronics, medical implants, diffusion barrier layers, corrosion inhibition, and wettability control. The present work presents the first surface immobilization of alkyl and perfluoro-alkyl (from C6 to C 18) chains onto CrN substrates using appropriately functionalized 1-alkynes, yielding covalently bound, high-density organic monolayers with excellent hydrophobic properties and a high degree of short-range order. The obtained monolayers were characterized in detail by water contact angle, X-ray photoelectron spectroscopy (XPS), ellipsometry, and infrared reflection absorption spectroscopy (IRRAS). © 2013 American Chemical Society.


Pujari S.P.,Wageningen University | Scheres L.,Wageningen University | Scheres L.,Surfix B.V. | Weidner T.,Max Planck Institute for Polymer Research | And 5 more authors.
Langmuir | Year: 2013

In order to achieve improved tribological and wear properties at semiconductor interfaces, we have investigated the thermal grafting of both alkylated and fluorine-containing ((CxF2x+1)-(CH 2)n-) 1-alkynes and 1-alkenes onto silicon carbide (SiC). The resulting monolayers display static water contact angles up to 120. The chemical composition of the covalently bound monolayers was studied by X-ray photoelectron spectroscopy (XPS), infrared reflection-absorption spectroscopy (IRRAS), and near-edge X-ray absorption fine structure (NEXAFS) spectroscopy. These techniques indicate the presence of acetal groups at the organic-inorganic interface of alkyne-modified SiC surfaces. The tribological properties of the resulting organic monolayers with fluorinated or nonfluorinated end groups were explored using atomic force microscopy (AFM). It was found that the fluorinated monolayers exhibit a significant reduction of adhesion forces, friction forces, and wear resistance compared with non-fluorinated molecular coatings and especially bare SiC substrates. The successful combination of hydrophobicity and excellent tribological properties makes these strongly bound, fluorinated monolayers promising candidates for application as a thin film coating in high-performance microelectronic devices. © 2013 American Chemical Society.


PubMed | Wageningen University and Surfix BV
Type: Journal Article | Journal: Langmuir : the ACS journal of surfaces and colloids | Year: 2015

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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