Gotowe bibliografie tematyczne / Surface Functionalisation

Gotowa bibliografia na temat „Surface Functionalisation”

Autor: Grafiati
Data publikacji: 4 czerwca 2021
Data aktualizacji: 8 czerwca 2024

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Artykuły w czasopismach na temat "Surface Functionalisation"

1

Hetemi, Dardan, i Jean Pinson. "Surface functionalisation of polymers". Chemical Society Reviews 46, nr 19 (2017): 5701–13. http://dx.doi.org/10.1039/c7cs00150a.

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Salguero, Jorge, Juan Manuel Vazquez, Moises Batista i Irene del Sol. "Recent Advances in Surface Functionalisation". Coatings 13, nr 3 (28.02.2023): 530. http://dx.doi.org/10.3390/coatings13030530.

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Plekan, Oksana, Vitaliy Feyer, Andrew Cassidy, Victor Lyamayev, Nataliya Tsud, Sylwia Ptasińska, Sara Reiff, Rober G. Acres i Kevin C. Prince. "Functionalisation and immobilisation of an Au(110) surface via uracil and 2-thiouracil anchored layer". Physical Chemistry Chemical Physics 17, nr 23 (2015): 15181–92. http://dx.doi.org/10.1039/c5cp01886b.

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Hope, Michael A., Alexander C. Forse, Kent J. Griffith, Maria R. Lukatskaya, Michael Ghidiu, Yury Gogotsi i Clare P. Grey. "NMR reveals the surface functionalisation of Ti3C2MXene". Physical Chemistry Chemical Physics 18, nr 7 (2016): 5099–102. http://dx.doi.org/10.1039/c6cp00330c.

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Che, Chang, Behnam Dashtbozorg, Shaojun Qi, Matt J. North, Xiaoying Li, Hanshan Dong i Michael J. Jenkins. "The Ageing of μPlasma-Modified Polymers: The Role of Hydrophilicity". Materials 17, nr 6 (19.03.2024): 1402. http://dx.doi.org/10.3390/ma17061402.

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Thermoplastic polymers exhibit relatively limited surface energies and this results in poor adhesion when bonded to other materials. Plasma surface modification offers the potential to overcome this challenge through the functionalisation of the polymer surfaces. In this study, three polymers of differing hydrophobicity (HDPE, PA12, and PA6) were subjected to a novel, atmospheric, μPlasma surface treatment technique, and its effectiveness at increasing the surface energies was evaluated via measurement of the contact angle. To characterise the physical and chemical changes following μPlasma surface modification, the surface morphology was observed using atomic force microscopy (AFM), and the functionalisation of the surface was evaluated using infrared spectroscopy. Immediately after treatment, the contact angle decreased by 47.3° (HDPE), 42.6° (PA12), and 50.1° (PA6), but the effect was not permanent in that there was a pronounced relaxation or ageing phenomenon in operation. The ageing process over five hours was modelled using a modified stretched exponential function Kohlrausch–Williams–Watts (KWW) model, and it was found that the ageing rate was dependent on the hydrophilicity of polymers, with polyamides ageing more rapidly than polyethylene.
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Faga, Maria Giulia, Donatella Duraccio, Mattia Di Maro, Christelle Kowandy, Giulio Malucelli, Federico Davide Mussano, Tullio Genova i Xavier Coqueret. "Electron-Beam-Induced Grafting of Chitosan onto HDPE/ATZ Composites for Biomedical Applications". Polymers 13, nr 22 (20.11.2021): 4016. http://dx.doi.org/10.3390/polym13224016.

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The surface functionalisation of high-density polyethylene (HDPE) and HDPE/alumina-toughened zirconia (ATZ) surfaces with chitosan via electron-beam (EB) irradiation technique was exploited for preparing materials suitable for biomedical purposes. ATR–FTIR analysis and wettability measurements were employed for monitoring the surface changes after both irradiation and chitosan grafting reaction. Interestingly, the presence of ATZ loadings beyond 2 wt% influenced both the EB irradiation process and the chitosan functionalisation reaction, decreasing the oxidation of the surface and the chitosan grafting. The EB irradiation induced an increase in Young’s modulus and a decrease in the elongation at the break of all analysed systems, whereas the tensile strength was not affected in a relevant way. Biological assays indicated that electrostatic interactions between the negative charges of the surface of cell membranes and the –NH3+ sites on chitosan chains promoted cell adhesion, while some oxidised species produced during the irradiation process are thought to cause a detrimental effect on the cell viability.
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Taylor, Patrick D., Dale A. Osborne, Sherif Abdulkader Tawfik, Tetsuya Morishita i Michelle J. S. Spencer. "Tuning the work function of the silicene/4 × 4 Ag(111) surface". Physical Chemistry Chemical Physics 21, nr 13 (2019): 7165–73. http://dx.doi.org/10.1039/c9cp00424f.

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Su, Dunhao, Yong Li, Edwin A. Yates, Mark A. Skidmore, Marcelo A. Lima i David G. Fernig. "Analysis of protein-heparin interactions using a portable SPR instrument". PeerJ Analytical Chemistry 4 (8.04.2022): e15. http://dx.doi.org/10.7717/peerj-achem.15.

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Optical biosensors such as those based on surface plasmon resonance (SPR) are a key analytical tool for understanding biomolecular interactions and function as well as the quantitative analysis of analytes in a wide variety of settings. The advent of portable SPR instruments enables analyses in the field. A critical step in method development is the passivation and functionalisation of the sensor surface. We describe the assembly of a surface of thiolated oleyl ethylene glycol/biotin oleyl ethylene glycol and its functionalisation with streptavidin and reducing end biotinylated heparin for a portable SPR instrument. Such surfaces can be batch prepared and stored. Two examples of the analysis of heparin-binding proteins are presented. The binding of fibroblast growth factor 2 and competition for the binding of a heparan sulfate sulfotransferase by a library of selectively modified heparins and suramin, which identify the selectivity of the enzyme for sulfated structures in the polysaccharide and demonstrate suramin as a competitor for the enzyme’s sugar acceptor site. Heparin functionalised surfaces should have a wide applicability, since this polysaccharide is a close structural analogue of the host cell surface polysaccharide, heparan sulfate, a receptor for many endogenous proteins and viruses.
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Marchesini, Sofia, Keith R. Paton, Barry Brennan, Piers Turner i Andrew J. Pollard. "Using nuclear magnetic resonance proton relaxation to probe the surface chemistry of carbon 2D materials". Nanoscale 13, nr 13 (2021): 6389–93. http://dx.doi.org/10.1039/d0nr08937k.

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Kumarasinghe, Lasni Samalka, Neethu Ninan, Panthihage Ruvini Lakshika Dabare, Alex Cavallaro, Esma J. Doğramacı, Giampiero Rossi-Fedele, Craig Dreyer, Krasimir Vasilev i Peter Zilm. "Bioactive Plasma Coatings on Orthodontic Brackets: In Vitro Metal Ion Release and Cytotoxicity". Coatings 11, nr 7 (17.07.2021): 857. http://dx.doi.org/10.3390/coatings11070857.

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The metal ion release characteristics and biocompatibility of meta-based materials are key factors that influence their use in orthodontics. Although stainless steel-based alloys have gained much interest and use due to their mechanical properties and cost, they are prone to localised attack after prolonged exposure to the hostile oral environment. Metal ions may induce cellular toxicity at high dosages. To circumvent these issues, orthodontic brackets were coated with a functional nano-thin layer of plasma polymer and further immobilised with enantiomers of tryptophan. Analysis of the physicochemical properties confirmed the presence of functional coatings on the surface of the brackets. The quantification of metal ion release using mass spectrometry proved that plasma functionalisation could minimise metal ion release from orthodontic brackets. Furthermore, the biocompatibility of the brackets has been improved after functionalisation. These findings demonstrate that plasma polymer facilitated surface functionalisation of orthodontic brackets is a promising approach to reducing metal toxicity without impacting their bulk properties.
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Rozprawy doktorskie na temat "Surface Functionalisation"

1

McNaughter, Paul D. "Surface functionalisation techniques for colloidal inorganic nanocrystals". Thesis, University of East Anglia, 2013. https://ueaeprints.uea.ac.uk/43077/.

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Colloidally-stable inorganic nanocrystals have a wide range of envisaged applications in biological environments. To reach their potential, the nanocrystals need to be stable in aqueous environments and have pendant functionality available for attachment of biomolecules. In this thesis, new methods for the transfer of nanocrystals from organic to aqueous media are developed and the interaction of aqueous stabilised particles with serum proteins is investigated. In Chapter 3, a new method for the synthesis of a thin silica layer upon the surface of nanocrystals is demonstrated. The method uses the hydrophobic interaction between an amphiphilic polymer and nanocrystal ligands to provide a foundation for growth of a silica layer. The coated nanocrystals are characterised using a wide range of techniques confirming that the presence and location of the silica shell. In Chapter 4, custom-synthesised amphiphilic polymers for water transfer and functionalisation of nanocrystals are synthesised, characterised and tested. Commercially-available polymers used for this purpose are examined, leading to a rationale for custom-design. Partial water transfers were achieved using activated ester copolymers with styrene but no transfers were achieved the octadecylacrylate copolymers. Poly(ethylene glycol) containing monomers were also used but yielded no transfers. This suggests that behaviour of the polymer during the coating procedure is intimately linked to the structure of the polymer. In Chapter 5, small-angle neutron scattering is used to elucidate structural information for the protein corona formed on nanocrystals and silica nanoparticles. Information on the packing of ligands on colloidal nanocrystals without a amphiphilic polymer coating was determined. The fitting of the protein corona upon silica nanoparticles was explored using core-shell form factors but was hampered by complexities within the scattering profiles which were not accounted for using simple form factors.
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2

Tehrani, Zari. "Functionalisation of semiconductor surface for biosensor application". Thesis, Swansea University, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.678571.

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Hynes, Alan. "The application of pulsed plasmas towards controlled surface functionalisation". Thesis, Durham University, 1998. http://etheses.dur.ac.uk/4887/.

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Pulsed plasmas were investigated as a means of controlling the composition of the surfaces generated via plasma polymerisation. A variety of precursors were studied under a range of plasma conditions using both continuous wave and pulsed plasmas. Surface and bulk analytical techniques were used to characterise the deposited plasma polymers whilst deposition rate measurements aided in understanding the effects of altering the various plasma parameters. Continuous wave plasma polymerisation of saturated cyclic fluorocarbons yielded plasma polymers with high fluorine/carbon ratios. Plasma instability at low powers limits the extent to which continuous wave power can be used to achieve good selectivity in the polymerisation process. Pulsed plasma polymerisation of perfluoroallylbenzene was studied in detail to investigate the influence of pulsing parameters on the surface composition. Highly aromatic surfaces were obtained through retention of the perfluorophenyl group from the precursor. Deposition rate experiments confirmed polymerisation was taking place in the off-portion of the duty cycle for precursors with a functional group susceptible to radical initiated reactions. A cyclic siloxane precursor with vinyl substituents was used to generate surface consisting of siloxane rings in an organic matrix. The monomer structure was retained through the reaction of the vinyl groups in the off-portion of the duty cycle. For low duty cycle pulsed plasma polymers the Si:0 ratio of the plasma polymers was identical to that of the monomer, indicating successflil retention of monomer structure using pulsed plasmas. Preliminary investigations into the pulsed plasma polymerisation of styrene oxide yielded a range of polymer compositions with varying oxygen contents. The properties of the surfaces varied with oxygen content. The results indicate that pulsed plasmas can give significant enhancements over continuous wave plasmas in controlling surface composition and properties.
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Pailleret, Alain. "Electrochemistry of calixarene derivatives : applications in electroanalysis and surface functionalisation". Thesis, University of Salford, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.272699.

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Atkinson, Sarah Jane, i n/a. "Studies in Dendritic Scaffolds and Surface Functionalisation for Applications in Nanoscience". Griffith University. School of Biomolecular and Physical Sciences, 2007. http://www4.gu.edu.au:8080/adt-root/public/adt-QGU20071122.124705.

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Chapter 1 includes a review on dendrimers, their synthesis and applications, with a particular focus on urea-linked dendritic species. The synthetic strategy utilised in this body of work was based on the preparation of a number of branched synthetic building blocks possessing differing terminal functionality. These branched dendrons, bearing three terminal residues and based on the cheap starting material tris(hydroxymethyl)aminomethane (TRIS) 23, involved the coupling of 3.3 equivalents of an appropriately para-substituted benzoic acid chloride with BOC protected TRIS 24 in DCM in the presence of triethylamine. The p-nitro, p-methoxy and p-methyl benzoyl chloride starting materials were obtained commercially, whilst N-(4-carboxyphenyl)maleimide was synthesised according to literature procedures. The BOC protected dendrons (25–27, 34) were synthesized in yields ranging from 50–92%. Deprotection of the BOC protected dendrons 25 and 26 in DCM with TFA, followed by the addition of 1M Na2CO3 afforded the TFA salts 35 and 36, respectively. The corresponding free base amines 37 and 38 were obtained on further treatment of the TFA salts with sodium carbonate. Deprotection of the BOC protected dendrons 27 and 34 afforded the free amines 39 and 48 directly after treatment with sodium carbonate. Synthesis of functionalised branched molecules containing 6- and 9-peripheral functionalities was achieved by refluxing 2 or 3 equivalents of the free amine dendrons with the bi- or tri- functional isocyanate cores, 15 and 45, in refluxing DCM, in most cases the products precipitated from the reaction mixture after 18 h and were isolated simply by filtration, otherwise the removal of the solvent from the reaction mixture afforded the spectroscopically pure product. Conversion of the peripheral nitro functionalised species 14 and 21 to the corresponding amines occurred smoothly via hydrogenation using 5% Pd/C under elevated temperature and pressure (DMF, 55 ºC, 600 psi) and afforded the polyamine 6-mer 51 in 92% yield and the 9-mer 50 in 90% yield, respectively. Similarly, conversion of the methoxy coated 9-mer 42, to the corresponding phenolic compound (AlBr3, dodecane thiol, DCM) afforded the 9-mer polyphenol 52 in an 87% yield. All compounds prepared were fully characterised and crystal structures were obtained for 26 and 35. Chapter 2 includes a review on self-assembled monolayers of organosulfur compounds on gold, applications, patterning techniques and techniques for the characterisation of these surfaces. A number of surface monomers were successfully synthesized, to be used for various surface functionalisations, including the formation of an amine reactive N-hydroxysuccinimide (NHS) disulfide 53, via the DCC coupling of 11,11’-dithiobisundecanoic acid 54 with N-hydroxysuccinimide with an isolated yield of 30%. A novel protein-resistant monomer 58 was also synthesized from 11-undecanoic acid 55 via an acid chloride coupling with triethylene glycol monomethyl ether 58, and isolated in a 72% yield. A number of attempts were made to produce an acyl azide SAM monomer 59, with success finally achieved via the acid chloride coupling of 11,11’-dithiobisundecanoic acid 54 with 5-amino-1,3-benzenedicarbonyl diazide 62 to produce 59 with an isolated yield of ~ 30%. Gold surfaces were prepared on atomically flat silicon wafers using an argon-ion sputterer. SAM films were formed on the gold surfaces via traditional solution based self-assembly methodology. A UV patterning protocol was developed, and a successful patterning trial using the NHS terminated monomer to backfill the UV exposed areas of a dodecane thiol monolayer was achieved and visualized using AFM and fluorescence microscopy after treating the surface with aminofluorescein. The covalent attachment of green fluorescent protein to the monolayer surface via reaction with the NHS terminated monolayer was demonstrated. The fluorescence of the biomolecule was preserved. The formation of a monolayer using the acyl azide monomer 59, was characterised by contact angle and XPS analysis. However, preliminary studies into the activation of the acyl azide surface into the reactive isocyanate were unsuccessful. There is however, significant scope for further investigations into this interesting surface technology. Chapter 3 includes a review on heterobifunctional linker technology with a particular focus on amine and thiol reactive moieties and literature examples of heterobifunctional linkers of this type. Synthesis of heterobifunctional reagents such as 71 and 74 via a two step synthetic methodology involving the coupling of maleic anhydride with the parent amino-acids in acetic acid, followed by a one pot cyclisation and NHS esterification using DCC in DMF were successful, with overall yields of 9% and 32% respectively for the two reaction steps. The one pot extension of 74 with 6-aminohexanoic acid, followed by DCC, facilitated NHS esterification was achieved successfully in a yield of 30%. Attempts to extend 74 with the synthesised amino acid 88 were unsuccessful due to the insolubility of 88 in organic solvents. A different synthetic strategy was devised towards the synthesis of 85 with the coupling of 74 and mono BOC protected ethylene diamine 91 in DCM to give 93 in an isolated yield of 60%. Deprotection of the terminal amine was achieved via reaction with TFA in DCM however all attempts to prepare the free amine were unsuccessful. Subsequent attempts to couple 94 with both succinic anhydride and 92 were unsuccessful. A maleimide functionalized crown ether was synthesised as a molecule for protein modification via the reaction of 74 with 4’-aminobenzo-15-crown-5 97 to produce 98 in an 80% yield. All compounds were fully characterised with crystal structures obtained for 74, 79 and 89.
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Popat, Rohit P. "Functionalisation of polyolefins and its effects on surface chemistry and energetics". Thesis, Loughborough University, 1995. https://dspace.lboro.ac.uk/2134/22023.

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The surface functionalisation of polyethylene and polypropylene by industrial and laboratory scale corona treatments and by laboratory flame treatment was studied. The surface sensitive techniques of X-ray photoelectron spectroscopy (XPS), attenuated total reflection infra-red spectroscopy (FTIR-ATR), contact angle measurement and electron microscopy (SEM and TEM) were employed. Corona and flame treatments resulted in incorporation of oxygen only into the surfaces of both polyethylene and polypropylene, resulting in improved surface wettabilities. A variety of oxygen functional groups were introduced by the two treatments. The industrial and laboratory scale treatments of both polymers were found to be similar in terms of the oxygen concentrations incorporated and surface wettabilities achieved. The presence of significant amounts of chain scission products were indicated on corona treated surfaces, while only minimal quantities were indicted on flame treated surfaces. This was attributed to their volatilisation during flame treatment. Introduction of sulfur dioxide into the flame and corona regions during treatment resulted in significant improvements in surface wettability. Incorporation of sulfur and nitrogen resulted from the presence of sulfur dioxide. A possible mechanism involving the formation of sulfonic acid groups and ammonium sulfonate groups was suggested. An oxidation depth model developed for use with variable take-off angle XPS showed that significantly deeper oxidation occurred in the presence of sulfur dioxide. Corona treatment was more effective in improving surface wettabilities than flame treatment, this being attributed to heat induced functional group reorientation during flame . treatment for polyethylene and to differences in surface chemistry resulting from the two treatments in the case of polypropylene. The surface wettability of poly ethylene was more readily improved than the surface wettability of polypropylene after all the treatments investigated. A method for estimating functional group concentrations using chemical derivatisation and contact angle measurement was developed. Functional group estimates for flame treated polyethylene were found to be in good agreement with chemical derivatisation used in conjunction with XPS measurements.
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Viswanathan, Priyalakshmi. "In situ surface functionalisation of scaffolds using block copolymer self-assembly". Thesis, University of Sheffield, 2013. http://etheses.whiterose.ac.uk/3925/.

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Understanding human mesenchymal stem cell (hMSC) adhesion and differentiation in three-dimensional matrices in vitro is important for potential regenerative medicine and stem cell therapies. One of the key requirements for the use of scaffolds is that they correctly display the physicochemical properties mimicking those of the native extracellular matrix (ECM), in particular adhesive heterogeneity. Previous studies in 2D provide evidence for the effects of matrix properties such as stiffness, topography and surface chemistry. Yet, there are very few examples to date where ECM heterogeneity has been recapitulated and its effects on hMSCs investigated. The main aim of this research was to design topologically defined three-dimensional porous scaffolds. This was achieved by exploiting the self-assembly of amphiphilic diblock copolymers confined at an interface. Two methods of scaffold fabrication were used in these studies; high internal phase emulsion (HIPE) templating and electrospinning. In both studies, mixtures of two amphiphilic block copolymers were used to induce phase separation between the dissimilar hydrophilic blocks thereby creating distinct copolymer domains in the nanometer length scales on the scaffold surface. In both scaffold fabrication methods the amphiphilic block copolymers used were a combination of cell inert and cell adhesive chemistries, thereby generating matrices with distinct cell binding sites. The functionality and adhesive heterogeneity of these materials were characterised using varying techniques including x-ray photoelectron spectroscopy, chemical force spectroscopy mapping and contact angle measurements. The effect of adhesive heterogeneity of such matrices on human mesenchymal progenitor adhesion and differentiation based on block copolymer domains were investigated. It was found that hMSCs adhered in a block copolymer dependent manner to scaffolds that most closely mimicked the adhesive heterogeneity in native extracellular matrix.
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8

Atkinson, Sarah Jane. "Studies in Dendritic Scaffolds and Surface Functionalisation for Applications in Nanoscience". Thesis, Griffith University, 2007. http://hdl.handle.net/10072/366865.

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Chapter 1 includes a review on dendrimers, their synthesis and applications, with a particular focus on urea-linked dendritic species. The synthetic strategy utilised in this body of work was based on the preparation of a number of branched synthetic building blocks possessing differing terminal functionality. These branched dendrons, bearing three terminal residues and based on the cheap starting material tris(hydroxymethyl)aminomethane (TRIS) 23, involved the coupling of 3.3 equivalents of an appropriately para-substituted benzoic acid chloride with BOC protected TRIS 24 in DCM in the presence of triethylamine. The p-nitro, p-methoxy and p-methyl benzoyl chloride starting materials were obtained commercially, whilst N-(4-carboxyphenyl)maleimide was synthesised according to literature procedures. The BOC protected dendrons (25–27, 34) were synthesized in yields ranging from 50–92%. Deprotection of the BOC protected dendrons 25 and 26 in DCM with TFA, followed by the addition of 1M Na2CO3 afforded the TFA salts 35 and 36, respectively. The corresponding free base amines 37 and 38 were obtained on further treatment of the TFA salts with sodium carbonate. Deprotection of the BOC protected dendrons 27 and 34 afforded the free amines 39 and 48 directly after treatment with sodium carbonate. Synthesis of functionalised branched molecules containing 6- and 9-peripheral functionalities was achieved by refluxing 2 or 3 equivalents of the free amine dendrons with the bi- or tri- functional isocyanate cores, 15 and 45, in refluxing DCM, in most cases the products precipitated from the reaction mixture after 18 h and were isolated simply by filtration, otherwise the removal of the solvent from the reaction mixture afforded the spectroscopically pure product. Conversion of the peripheral nitro functionalised species 14 and 21 to the corresponding amines occurred smoothly via hydrogenation using 5% Pd/C under elevated temperature and pressure (DMF, 55 ºC, 600 psi) and afforded the polyamine 6-mer 51 in 92% yield and the 9-mer 50 in 90% yield, respectively. Similarly, conversion of the methoxy coated 9-mer 42, to the corresponding phenolic compound (AlBr3, dodecane thiol, DCM) afforded the 9-mer polyphenol 52 in an 87% yield. All compounds prepared were fully characterised and crystal structures were obtained for 26 and 35. Chapter 2 includes a review on self-assembled monolayers of organosulfur compounds on gold, applications, patterning techniques and techniques for the characterisation of these surfaces. A number of surface monomers were successfully synthesized, to be used for various surface functionalisations, including the formation of an amine reactive N-hydroxysuccinimide (NHS) disulfide 53, via the DCC coupling of 11,11’-dithiobisundecanoic acid 54 with N-hydroxysuccinimide with an isolated yield of 30%. A novel protein-resistant monomer 58 was also synthesized from 11-undecanoic acid 55 via an acid chloride coupling with triethylene glycol monomethyl ether 58, and isolated in a 72% yield. A number of attempts were made to produce an acyl azide SAM monomer 59, with success finally achieved via the acid chloride coupling of 11,11’-dithiobisundecanoic acid 54 with 5-amino-1,3-benzenedicarbonyl diazide 62 to produce 59 with an isolated yield of ~ 30%. Gold surfaces were prepared on atomically flat silicon wafers using an argon-ion sputterer. SAM films were formed on the gold surfaces via traditional solution based self-assembly methodology. A UV patterning protocol was developed, and a successful patterning trial using the NHS terminated monomer to backfill the UV exposed areas of a dodecane thiol monolayer was achieved and visualized using AFM and fluorescence microscopy after treating the surface with aminofluorescein. The covalent attachment of green fluorescent protein to the monolayer surface via reaction with the NHS terminated monolayer was demonstrated. The fluorescence of the biomolecule was preserved. The formation of a monolayer using the acyl azide monomer 59, was characterised by contact angle and XPS analysis. However, preliminary studies into the activation of the acyl azide surface into the reactive isocyanate were unsuccessful. There is however, significant scope for further investigations into this interesting surface technology. Chapter 3 includes a review on heterobifunctional linker technology with a particular focus on amine and thiol reactive moieties and literature examples of heterobifunctional linkers of this type. Synthesis of heterobifunctional reagents such as 71 and 74 via a two step synthetic methodology involving the coupling of maleic anhydride with the parent amino-acids in acetic acid, followed by a one pot cyclisation and NHS esterification using DCC in DMF were successful, with overall yields of 9% and 32% respectively for the two reaction steps. The one pot extension of 74 with 6-aminohexanoic acid, followed by DCC, facilitated NHS esterification was achieved successfully in a yield of 30%. Attempts to extend 74 with the synthesised amino acid 88 were unsuccessful due to the insolubility of 88 in organic solvents. A different synthetic strategy was devised towards the synthesis of 85 with the coupling of 74 and mono BOC protected ethylene diamine 91 in DCM to give 93 in an isolated yield of 60%. Deprotection of the terminal amine was achieved via reaction with TFA in DCM however all attempts to prepare the free amine were unsuccessful. Subsequent attempts to couple 94 with both succinic anhydride and 92 were unsuccessful. A maleimide functionalized crown ether was synthesised as a molecule for protein modification via the reaction of 74 with 4’-aminobenzo-15-crown-5 97 to produce 98 in an 80% yield. All compounds were fully characterised with crystal structures obtained for 74, 79 and 89.
Thesis (PhD Doctorate)
Doctor of Philosophy (PhD)
School of Biomolecular and Physical Sciences
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9

Torrengo, Simona. "Surface Functionalisation and Characterization of Diamond Thin Films for Sensing Applications". Doctoral thesis, Università degli studi di Trento, 2010. https://hdl.handle.net/11572/369226.

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In this thesis work nanoscrystalline optical properties of diamond and two recent new NCD functionalisation techniques involving UV light (one step method and photochemical oxidation) have been investigated. Firstly the oxidation of diamond surface caused by the irradiation of the surface with UV-light in oxygen atmosphere was considered. Two different experiments in situ were realized in order to understand the physic-chemistry of this method. The chemical bonds between oxygen and surface carbon atoms were investigated by firstly performing an annealing treatment in ultra hight vacuum of a oxidized UV surface and then comparing the obtained result with annealing treatments of two different oxygenated diamond surfaces using other two techniques: plasma oxidation and piranha solution oxidation. An other interesting aspect on which clarity has to be made deal with amination process of diamond surface. As a first fundamental step, the efficiency on hydrogenated diamond surface was investigate. Successively the role of oxygen in the chemistry of amination process was studied performing in situ experiments using different terminated diamond surface (hydrogenated, chemically oxidized, UV oxidized) and different gaese (pure NH3 or NH3 + O2).
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Torrengo, Simona. "Surface Functionalisation and Characterization of Diamond Thin Films for Sensing Applications". Doctoral thesis, University of Trento, 2010. http://eprints-phd.biblio.unitn.it/449/1/PhD_Simona_Torrengo.pdf.

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In this thesis work nanoscrystalline optical properties of diamond and two recent new NCD functionalisation techniques involving UV light (one step method and photochemical oxidation) have been investigated. Firstly the oxidation of diamond surface caused by the irradiation of the surface with UV-light in oxygen atmosphere was considered. Two different experiments in situ were realized in order to understand the physic-chemistry of this method. The chemical bonds between oxygen and surface carbon atoms were investigated by firstly performing an annealing treatment in ultra hight vacuum of a oxidized UV surface and then comparing the obtained result with annealing treatments of two different oxygenated diamond surfaces using other two techniques: plasma oxidation and piranha solution oxidation. An other interesting aspect on which clarity has to be made deal with amination process of diamond surface. As a first fundamental step, the efficiency on hydrogenated diamond surface was investigate. Successively the role of oxygen in the chemistry of amination process was studied performing in situ experiments using different terminated diamond surface (hydrogenated, chemically oxidized, UV oxidized) and different gaese (pure NH3 or NH3 + O2).
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Książki na temat "Surface Functionalisation"

1

Popat, Rohit P. Functionalisation of polyolefins and its effects on surface chemistry and energetics. 1995.

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Części książek na temat "Surface Functionalisation"

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Cummins, David M., Pieter C. M. M. Magusin i Andreas Heise. "Functionalisation of polyHIPE Materials by ATRP Surface Grafting". W ACS Symposium Series, 327–41. Washington DC: American Chemical Society, 2009. http://dx.doi.org/10.1021/bk-2009-1023.ch022.

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Niccolai, Gerald P., i Jean-Marie Basset. "New Processes for Carbon-Carbon Bond Activation Catalysed by Oxide Supported Surface Organometallic Complexes". W Catalytic Activation and Functionalisation of Light Alkanes, 111–24. Dordrecht: Springer Netherlands, 1998. http://dx.doi.org/10.1007/978-94-017-0982-8_5.

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Singh, Mumal, Mona Vajpayee i Lalita Ledwani. "Eco-friendly Surface Modification and Nanofinishing of Textile Polymers to Enhance Functionalisation". W Nanotechnology for Energy and Environmental Engineering, 529–59. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-33774-2_23.

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Mishra, Satyendra, i Dharmesh Hansora. "Fabrication, Functionalisation and Surface Modification". W Graphene Nanomaterials, 19–100. Jenny Stanford Publishing, 2017. http://dx.doi.org/10.1201/9781315364551-2.

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Birchall, L. S., H. Qu i R. V. Ulijn. "Surface modification of biomaterials by peptide functionalisation". W Surface Modification of Biomaterials, 78–101. Elsevier, 2011. http://dx.doi.org/10.1533/9780857090768.1.78.

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Wilson, J. I. B. "Textile surface functionalisation by chemical vapour deposition (CVD)". W Surface Modification of Textiles, 126–38. Elsevier, 2009. http://dx.doi.org/10.1533/9781845696689.126.

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Hanawa, T. "Functionalisation of metallic surfaces for biomedical applications". W Surface Coating and Modification of Metallic Biomaterials, 275–86. Elsevier, 2015. http://dx.doi.org/10.1016/b978-1-78242-303-4.00009-0.

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Boskovic, S., F. Separovic, T. W. Turney, G. W. Stevens, M. L. Gee i A. J. O'Connor. "Amino functionalisation of microemulsion templated mesoporous silica foams". W Studies in Surface Science and Catalysis, 591–98. Elsevier, 2007. http://dx.doi.org/10.1016/s0167-2991(07)80076-0.

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Yaraki, Mohammad Tavakkoli, Iman Zare, Mahsa Imani, Nasrin Rahmatian, Hanna Madadi Gholipour i Ebrahim Mostafavi. "Graphene-based Nanocomposites for Cancer Cell Detection". W Graphene-based Nanocomposite Sensors, 289–318. Royal Society of Chemistry, 2023. http://dx.doi.org/10.1039/bk9781837671847-00289.

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Owing to their extraordinary chemical, electrical, mechanical, optical, and structural properties, graphene and its nanocomposites have been extensively used as core nanomaterials for designing wide ranges of biosensors for the investigation of cells and their surface chemistry. In this chapter, we highlight the importance of the investigation of surface chemistry as well as intracellular components in cells and their importance in the early detection of various severe diseases such as cancer. Next, we present the latest advances in designing electrochemical and optical biosensors based on graphene nanocomposites (with polymers, inorganic nanomaterials, biomacromolecules, etc.) for studying the surface biomarkers on cells, bioimaging of cells, as well as the behaviour of cells under different conditions. In these biosensors, we emphasise the role of graphene and surface functionalisation in designing various types of biosensors. In addition, we provide numerous examples from fundamental studies as well as innovative approaches for designing these biosensors. Finally, we outline the challenges and limitations in current approaches and present perspectives of the future of biosensors designed using graphene-based nanocomposites.
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Lahousse, Christophe, Nicolas Cors, Valérie Ruaux, Paul Grange i Caroline Cellier. "Preparation of Pd on Carbon Black by Deposition-precipitation: Study of the Effect of the Support Functionalisation". W Studies in Surface Science and Catalysis, 601–8. Elsevier, 2006. http://dx.doi.org/10.1016/s0167-2991(06)80958-4.

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Streszczenia konferencji na temat "Surface Functionalisation"

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Griffiths, Alexander D., Bogusz Stepak, Persephone Poulton, Natalia Grudzien i Natalia Trela-McDonald. "Beam shaping for high-speed surface functionalisation". W Functional Materials: Advances and Applications, redaktorzy Alistair H. Kean i Nikhil Bhalla. SPIE, 2023. http://dx.doi.org/10.1117/12.2690997.

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Broudissou, Quentin, Laura Gemini, Marc Faucon i Rainer Kling. "Surface functionalisation of transparent materials by selective laser etching". W Laser Applications in Microelectronic and Optoelectronic Manufacturing (LAMOM) XXVIII, redaktorzy Laura Gemini, Aiko Narazaki i Jan Kleinert. SPIE, 2023. http://dx.doi.org/10.1117/12.2648737.

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Purniawan, A., G. Pandraud, K. A. Vakalopoulos, P. J. French i P. M. Sarro. "Surface functionalisation of TiO2 evanescent waveguide sensor for E.coli monitoring". W SPIE Photonics Europe, redaktorzy Francis Berghmans, Anna G. Mignani i Piet De Moor. SPIE, 2012. http://dx.doi.org/10.1117/12.922498.

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Gemini, Laura, Aurelien Sikora, Laura Loi, Girolamo Mincuzzi, Marc Faucon i Rainer Kling. "Surface functionalisation of transparent materials: high-throughputs meet high resolutions". W Laser Applications in Microelectronic and Optoelectronic Manufacturing (LAMOM) XXVIII, redaktorzy Laura Gemini, Aiko Narazaki i Jan Kleinert. SPIE, 2023. http://dx.doi.org/10.1117/12.2648757.

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Huyang, George, Ingemar Petermann, John Canning i Maxwell J. Crossley. "Sol-gel surface functionalisation by cold-processing for optical sensor applications". W Asia Pacific Optical Sensors Conference, redaktorzy John Canning i Gangding Peng. SPIE, 2012. http://dx.doi.org/10.1117/12.915944.

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Cot, Amelie, Jerome Dejeu, Sophie Lakard, Patrick Rougeot i Michael Gauthier. "Modeling of electrostatic forces induced by chemical surface functionalisation for microrobotics applications". W 2013 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS 2013). IEEE, 2013. http://dx.doi.org/10.1109/iros.2013.6696633.

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Dean, Lareb, Shu Chen, Milo Shaffer, Andrew Thorley i Teresa Tetley. "Effect of surface functionalisation on the interaction of carbon nanotubes with primary human alveolar cells in vitro". W ERS International Congress 2017 abstracts. European Respiratory Society, 2017. http://dx.doi.org/10.1183/1393003.congress-2017.pa2021.

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KWAK, A. "Study of the Impact of –NH2 Modification on Adsorptive Properties of Graphene Oxide". W Terotechnology XII. Materials Research Forum LLC, 2022. http://dx.doi.org/10.21741/9781644902059-23.

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Abstract. Graphene oxide is a nanomaterial of very high adsorption capabilities due to its vast surface area. Moreover, numerous oxygen functional groups present on the surface of graphene oxide enable its modifications to be performed. The authors aimed to create adsorbents based on activated carbon impregnated with amine-modified graphene oxide. The study showed that the amino group functionalisation, both with the use of ethylenediamine (GO-EDA) and using polyaniline (GO-PANI), causes the adsorbent to remove lead, mercury, copper, and iron ions from aqueous solutions very efficiently. Both adsorbents also reduce the cadmium, nickel, zinc, and arsenic ion content, however to a lesser extent but nevertheless still significantly. The two sorbents can be applied in field water treatment to remove specific contaminants.
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Hildenhagen, Jens, Klaus Dickmann, Johannes Neyer i Christoph Wieschendorf. "Simultaneous microstructuring and functionalisation of surfaces with picosecond laser". W International Conference on Optics in Precision Engineering and Nanotechnology (icOPEN2013), redaktorzy Chenggen Quan, Kemao Qian i Anand Asundi. SPIE, 2013. http://dx.doi.org/10.1117/12.2019055.

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Dejeu, Jerome, Patrick Rougeot, Sophie Lakard i Michael Gauthier. "Control of adhesion using surface functionalisations for robotic microhandling". W 2012 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS 2012). IEEE, 2012. http://dx.doi.org/10.1109/iros.2012.6385601.

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