Search results for "PRINTING"

Hierarchical Imprinting Using Crude Solid Phase Peptide Synthesis Products as Templates

2003

The crude products resulting from solid-phase peptide synthesis can be used as epitope templates to generate surface-confined sites for the template and larger peptides containing the template motif. This offers a facile route to robust affinity stationary phases for the chromatographic separation of peptides.

Molecularly imprinted composite materials via iniferter-modified supports

2002

Wide pore silica (DP = 100 nm) and gel-type or macroporous (12% nominal crosslinking density) Merrifield resins were modified with iniferter groups for grafting of crosslinked molecularly imprinted or non-imprinted polymer layers through quasi-living polymerisation. Prior to iniferter coupling, the silica supports were premodified by silanisation with p-(chloromethyl)phenyl trimethoxysilane. The iniferter groups were then introduced by reacting the resin-bound chloromethyl groups with sodium N,N-diethyldithiocarbamate. It was shown that the coupling yield, measured as the conversion of the chloromethyl groups, could be varied between 5 and 85% through kinetic control, with the fastest conve…

Inside Front Cover: Redox-Tunable Defects in Colloidal Photonic Crystals (Adv. Mater. 20/2005)

2005

The inside front cover illustrates reversible tuning of an intragap transmitting state induced by redox cycling, accomplished using a redox-active polyferrocenylsilane polyelectrolyte multilayer planar defect embedded in a colloidal photonic crystal (CPC) synthesized by a bottom–up method combining colloidal self-assembly and microcontact printing. In work reported on p. 2455 by Manners, Ozin, and co-workers, the wavelength position of the defect state can be changed by changing the oxidation state of the ferrocene moieties in the polymer backbone. This could find applications in electrochemically tunable microcavities, and—if light emitters are incorporated—electrochemically tunable CPC-ba…

Distribution of molecularly imprinted polymer layers on macroporous silica gel particles by STEM and EDX

2005

Abstract Using transmission electron microscopy (TEM) in parallel and scanning mode (STEM) combined with energy dispersive X-ray spectroscopy (EDX) the distribution of molecularly imprinted polymer layers covalently grafted on the inner and outer surface of macroporous silica gel particles was observed. The grafting was achieved using a special initiator system ( iniferter ) and applied on a well known model system producing molecularly imprinted layers with l -phenyl alanine analide ( l -PA) as template. By staining the sample with RuO 4 before its embedment in epoxy resin and cutting ultra thin slices it was possible to identify the stained grafted polymer on the silica matrix by EDX. Bas…

Soluble Single-Molecule Nanogels of Controlled Structure as a Matrix for Efficient Artificial Enzymes

2006

Imprinted Polymers with Memory for Small Molecules, Proteins, or Crystals

2000

Studies on the Process of Formation, Nature and Stability of Binding Sites in Molecularly Imprinted Polymers

2002

AbstractIn Molecular Imprinting the nature of the templated binding sites and the mechanism of their formation are still poorly understood. For this reason our groups are carrying out fundamental studies concerning known imprinting protocols, with the primary aim of shedding light on the role of the template in the different steps of the polymerisation, from the formation of primary chains to the build-up of the porous structure. In this paper we report our initial results concerning copolymers of methacrylic acid (MAA) and ethyleneglycol dimethacrylate (EDMA) and their formation in presence or absence of the templates 9-ethyladenine, ametryn or terbutylazine. Monitoring the monomer disappe…

Enantioselective Ester Hydrolysis Catalyzed by Imprinted Polymers. 2,

2000

Highly cross-linked network polymers prepared by molecular imprinting catalyzed enantioselectively the hydrolysis of N-tert-butoxycarbonyl phenylalanine-p-nitrophenyl ester (BOCPheONP). The templates were designed to allow incorporation of the key catalytic elements, found in the proteolytic enzyme chymotrypsin, into the polymer active sites. Three model systems were evaluated. These were constructed from a chiral phosphonate analogue of phenylalanine (series A, C) or L-phenylalanine (series B) attached by a labile ester linkage to an imidazole-containing vinyl monomer. Free radical copolymerization of the template with methacrylic acid (MAA) and ethylene glycol dimethacrylate (EDMA) gave a…

IMPRESSIONI IN SICILIA

2014

“Impressioni in Sicilia” è la storia di una piccola azienda di design tessile che ha operato a Palermo dal 1974 fino al 1994. Proprietaria dell’impresa è Regine Hildebrandt, una svizzera trapiantata in Sicilia. La nascita di questo laboratorio s’inserisce in quel filone di esperienze finalizzate a incentivare il processo che vede l’incontro tra la cultura del progetto e la produzione artigianale, spesso legata alle tradizioni e alle risorse di alcuni territori. Gli oggetti progettati e realizzati da Regine hanno un valore durevole per la qualità dei disegni e dei materiali ma soprattutto, perché il suo progetto di ricerca è destinato all’identificazione e alla proposizione di “tratti cultur…

e-Health and the Internet of Things. Definitions, applications, regulation, actors. Roadmap to a use cases research.

2015

This reports deals with the electronic health (e-Health) as a prism to study the Internet of Things. After having provided the necessary definitions and having described applications, regulators, regulations and actors both in the UK, in the US and in the EU, the author sets the basis for a use cases research regarding the e-prescribing.