@article {7091, title = {Application of nanoparticles for the enhancement of latent fingerprints}, journal = {Chem Commun (Camb)Chemical communications (Cambridge, England)}, number = {11}, year = {2007}, note = {MEDLINE AN 2007147255(Journal; Article; (JOURNAL ARTICLE))}, month = {2007///}, pages = {1142 - 4}, abstract = {Two different types of nanoparticles dissolved in organic solution, gold stabilized by n-alkanethiols and CdSe/ZnS stabilized by n-alkane-amine, adhere preferentially to the ridges of latent fingerprints; the gold deposits catalyze silver electroless deposition from "Silver Physical Developer" (Ag-PD), an aqueous solution containing silver colloids stabilized by cationic surfactants, to form dark impressions of the ridge details; the hydrophobic capped gold nanoparticles significantly improve the intensity and clarity of the developed prints compared with Ag-PD alone; finger marks treated with CdSe/ZnS nanoparticles can be viewed directly, due to their fluorescence under UV illumination.[on SciFinder (R)]}, isbn = {1359-7345}, author = {Sametband, Matias and Shweky, Itzhak and Banin, Uri and Mandler, Daniel and Almog, Joseph} } @article {7089, title = {Electrochemical formation and characterization of copolymers based on N-pyrrole derivatives}, journal = {BiomacromoleculesBiomacromolecules}, volume = {8}, number = {9}, year = {2007}, note = {MEDLINE AN 2007588910(Journal; Article; (JOURNAL ARTICLE); (RESEARCH SUPPORT, NON-U.S. GOV{\textquoteright}T))}, month = {2007///}, pages = {2928 - 35}, abstract = {Organic coatings based on N-(2-carboxyethyl)pyrrole (PPA) and a butyl ester of PPA (BuOPy) were deposited via electrochemical oxidation. The homo- and copolymers were electropolymerized on glassy carbon and stainless steel in acetonitrile using tetrabutylammonium tetrafluoraborate (Bu4NF4B) as the electrolyte. The mechanism of deposition on stainless steel was studied by chronoamperometry and by the tapping and phase angle imaging modes of atomic force microscopy. The electrochemical properties and growth of the films were investigated by cyclic voltammetry. The composition of the copolymers was determined by reflection-absorption Fourier transform infrared spectroscopy. We found that while the hydrophilic monomer PPA undergoes progressive nucleation followed by instantaneous growth the hydrophobic BuOPy nucleates instantaneously. The rate of BuOPy electropolymerization was higher than that of PPA, and the resulting film was thicker yet fluffier. Copolymer films were enriched by BuOPy as compared with the electropolymerization solution, which is attributed to the faster rate of electropolymerization of BuOPy than PPA.[on SciFinder (R)]}, isbn = {1525-7797}, author = {Okner, Regina and Domb, Abraham J. and Mandler, Daniel} } @article {7090, title = {Electrostatic attachment of gold and poly(lactic acid) nanoparticles onto omega-aminoalkanoic acid self-assembled monolayers on 316L stainless steel}, journal = {ChemistryChemistry (Weinheim an der Bergstrasse, Germany)}, volume = {13}, number = {22}, year = {2007}, note = {MEDLINE AN 2007491351(Journal; Article; (JOURNAL ARTICLE); (RESEARCH SUPPORT, NON-U.S. GOV{\textquoteright}T))}, month = {2007///}, pages = {6402 - 7}, abstract = {The assembly of poly(lactic acid) (PLA) nanoparticles on a 12-aminodecanoic acid (ADA) self-assembled monolayer (SAM) is described. Assembly is accomplished through electrostatic interactions between the positively charged SAM and the negatively charged PLA nanoparticles. The strategy used involves two steps in which a preliminary electrochemical coating of the ADA SAM is followed by a second step that involves immersing the SAM in a solution containing gold or PLA nanoparticles. The SAM was characterized by using cyclic voltammetry (CV), X-ray photoelectron spectroscopy (XPS), FTIR spectroscopy, and contact angle measurements, whereas scanning electron microscopy (SEM) was used to image the nanoparticles after electrostatic attachment was achieved. We found that the surface coverage of the nanoparticles could be controlled by modulating the electrostatic interactions between the negatively charged particles and the positively charged SAM surface by varying the pH of the nanoparticle solution, the immersion time, and the number of cyclic voltammetry scans under which the SAM was formed.[on SciFinder (R)]}, isbn = {0947-6539}, author = {Shustak, Galit and Shaulov, Yulia and Domb, Abraham J. and Mandler, Daniel} } @article {6935, title = {Application of nanoparticles for the enhancement of latent fingerprints.}, journal = {Chem. Commun. (Cambridge, U. K.)Chemical Communications (Cambridge, United Kingdom)}, number = {11}, year = {2007}, note = {CAPLUS AN 2007:258552(Journal)}, month = {2007///}, pages = {1142 - 1144}, publisher = {Royal Society of Chemistry}, abstract = {Two different types of nanoparticles dissolved in org. soln., Au stabilized by n-alkanethiols and CdSe/ZnS stabilized by n-alkaneamine, adhere preferentially to the ridges of latent fingerprints,. The gold deposits catalyze silver electroless deposition from "Silver Phys. Developer" (Ag-PD), an aq. soln. contg. silver colloids stabilized by cationic surfactants, to form dark impressions of the ridge details. The hydrophobic capped gold nanoparticles significantly improve the intensity and clarity of the developed prints compared with Ag-PD alone. Fingermarks treated with CdSe/ZnS nanoparticles can be viewed directly, due to their fluorescence under UV illumination. [on SciFinder(R)]}, keywords = {cadmium selenide zinc sulfide nanoparticle alkanethiol alkaneamine fingerprint forensic, gold nanoparticle alkanethiol alkaneamine fingerprint forensic}, isbn = {1359-7345}, author = {Sametband, Matias and Shweky, Itzhak and Banin, Uri and Mandler, Daniel and Almog, Joseph.} } @article {6936, title = {Electrocoating of stainless steel coronary stents for extended release of Paclitaxel.}, journal = {Mater. Sci. Eng., CMaterials Science \& Engineering, C: Biomimetic and Supramolecular Systems}, volume = {27}, number = {3}, year = {2007}, note = {CAPLUS AN 2007:229013(Journal)}, month = {2007///}, pages = {510 - 513}, publisher = {Elsevier B.V.}, abstract = {The purpose of this study was to examine chem., mech. and Paclitaxel release properties of the new coating onto the stainless steel coronary stents. Stainless steel coronary stents were coated with elec. polymerizable pyrrole deriv., applying cyclic voltammetry technique in a simple 3 electrode cell, while stent represented a working electrode. Resulted polymer coating were examd. by cyclic voltammetry (elec. parameters), SEM (morphol. images), goniometer (hydrophobisity of the surface), profilometer ( thickness of the polymer coating). Polymer stability was examd. by placing the coated stent into 1:1 soln. of fetal calf serum:seline soln. up to 1 yr and under the mouse skin for 1 wk. Paclitaxel loading were carried out by immersion into drug soln. and its release was detected by HPLC. Reproducible one step method for coating different pyrrole derivs. on stainless steel coronary stents provided thin (single micrometers), uniform coating with various morphol. and hydrophobisity. These surface properties allow to load appropriate amt. of Paclitaxel and to release it slowly up to a month. [on SciFinder(R)]}, keywords = {stainless steel coronary stent electrocoating pyrrole paclitaxel dissoln}, isbn = {0928-4931}, author = {Okner, R. and M. Oron and Tal, N. and Mandler, D and Domb, A. J.} } @article {6938, title = {A novel electrochemically synthesized biodegradable thin film of polypyrrole-polyethylene glycol-polylactic acid nanoparticles.}, journal = {New J. Chem.New Journal of Chemistry}, volume = {31}, number = {1}, year = {2007}, note = {CAPLUS AN 2007:15899(Journal)}, month = {2007///}, pages = {163 - 168}, publisher = {Royal Society of Chemistry}, abstract = {Nanoparticles having reactive pyrrole residues were prepd. from poly(1-ethoxyethyl glycidyl ether)-block-poly(L,L-lactide) block copolymer. The nanoparticles were electropolymd. in aq. media through the oxidn. of the pyrrole residue and in the presence of pyrrole to form a nanocomposite thin film. The novel synthesis of these pyrrole-functionalized nanoparticles is described and the electrochem. deposition of the corresponding coating is characterized using electrochem., SEM and EDX. [on SciFinder(R)]}, keywords = {pyrrole substituted ethoxyethyl glycidyl ether lactide block copolymer electropolymn}, isbn = {1144-0546}, author = {Shustak, Galit and Gadzinowski, Mariusz and Slomkowski, Stanislaw and Domb, Abraham J. and Mandler, Daniel.} } @article {6937, title = {Preparation and characterization of ultra-thin sol-gel films.}, journal = {Thin Solid FilmsThin Solid Films}, volume = {515}, number = {11}, year = {2007}, note = {CAPLUS AN 2007:213616(Journal)}, month = {2007///}, pages = {4624 - 4628}, publisher = {Elsevier B.V.}, abstract = {The formation and characterization of nanometer thick sol-gel films are reported. The films were prepd. by spin-coating of a dild. soln. of a silane precursor on a no. of different substrates. The effect of diln., rotation speed and nature of substrate on the thickness and homogeneity of the films was examd. Characterization of the films was carried out by profilometry, reflectance spectroscopy, at. force microscopy, adhesion test and electrochem. We find that the diln. factor has a pronounced effect on the film thickness. Moreover, the time of diln., namely, whether diln. was carried out before or after a period of hydrolysis, has a noticeable effect on the thickness as well as on the permeability of embedded species. [on SciFinder(R)]}, keywords = {silica film thickness homogeneity sol gel process substrate}, isbn = {0040-6090}, author = {Shapiro, Leora and Marx, Sharon and Mandler, Daniel.} } @article {6932, title = {Electrochemical Formation and Characterization of Copolymers Based on N-Pyrrole Derivatives.}, journal = {BiomacromoleculesBiomacromolecules}, volume = {8}, number = {9}, year = {2007}, note = {CAPLUS AN 2007:860736(Journal)}, month = {2007///}, pages = {2928 - 2935}, publisher = {American Chemical Society}, abstract = {Org. coatings based on N-(2-carboxyethyl)pyrrole (PPA) and a Bu ester of PPA (BuOPy) were deposited via electrochem. oxidn. The homo- and copolymers were electropolymd. on glassy C and stainless steel in MeCN using Bu4NBF4B as the electrolyte. The mechanism of deposition on stainless steel was studied by chronoamperometry and by the tapping and phase angle imaging modes of at. force microscopy. The electrochem. properties and growth of the films were studied by cyclic voltammetry. The compn. of the copolymers was detd. by reflection-absorption FTIR spectroscopy. While the hydrophilic monomer PPA undergoes progressive nucleation followed by instantaneous growth the hydrophobic BuOPy nucleates instantaneously. The rate of BuOPy electropolymn. was higher than that of PPA, and the resulting film was thicker yet fluffier. Copolymer films were enriched by BuOPy as compared with the electropolymn. soln., which is attributed to the faster rate of electropolymn. of BuOPy than PPA. [on SciFinder(R)]}, keywords = {electrochem copolymn oxidative carboxyethylpyrrole butyl ester}, isbn = {1525-7797}, author = {Okner, Regina and Domb, Abraham J. and Mandler, Daniel.} } @article {6931, title = {Electrostatic attachment of gold and poly(lactic acid) nanoparticles onto ω-aminoalkanoic acid self-assembled monolayers on 316L stainless steel.}, journal = {Chem. - Eur. J.Chemistry - A European Journal}, volume = {13}, number = {22}, year = {2007}, note = {CAPLUS AN 2007:901786(Journal)}, month = {2007///}, pages = {6402 - 6407}, publisher = {Wiley-VCH Verlag GmbH \& Co. KGaA}, abstract = {The assembly of poly(lactic acid) (PLA) nanoparticles on a 12-aminodecanoic acid (ADA) self-assembled monolayer (SAM) is described. Assembly is accomplished through electrostatic interactions between the pos. charged SAM and the neg. charged PLA nanoparticles. The strategy used involves 2 steps in which a preliminary electrochem. coating of the ADA SAM is followed by a second step that involves immersing the SAM in a soln. contg. gold or PLA nanoparticles. The SAM was characterized by cyclic voltammetry (CV), XPS, FTIR spectroscopy, and contact angle measurements, whereas SEM was used to image the nanoparticles after electrostatic attachment was achieved. The authors found that the surface coverage of the nanoparticles could be controlled by modulating the electrostatic interactions between the neg. charged particles and the pos. charged SAM surface by varying the pH of the nanoparticle soln., the immersion time, and the no. of cyclic voltammetry scans under which the SAM was formed. [on SciFinder(R)]}, keywords = {stainless steel implant aminododecanoic acid gold polylactic acid electrodeposition}, isbn = {0947-6539}, author = {Shustak, Galit and Shaulov, Yulia and Domb, Abraham J. and Mandler, Daniel.} } @article {6930, title = {Formation of a molecular glue based on the electrochemical reduction of 4-hydroxyphenyldiazonium for the attachment of thin sol-gel film on glassy carbon.}, journal = {Z. Phys. Chem. (Muenchen, Ger.)Zeitschrift fuer Physikalische Chemie (Muenchen, Germany)}, volume = {221}, number = {9-10}, year = {2007}, note = {CAPLUS AN 2007:1328553(Journal)}, month = {2007///}, pages = {1237 - 1243}, publisher = {Oldenbourg Wissenschaftsverlag GmbH}, abstract = {The covalent attachment of a sol-gel thin film onto a glassy carbon electrode was accomplished through the electrochem. redn. of 4-hydroxyphenyldiazonium. The latter forms a very thin layer on the glassy carbon with hydroxyl groups, through which the sol-gel is attached. This mol. glue improves the adhesion of thin layers of sol-gel to a carbonaceous surface. [on SciFinder(R)]}, keywords = {hydroxyphenyldiazonium electrochem redn glue sol gel film glassy carbon}, isbn = {0942-9352}, author = {Shapiro, Leora and Mandler, Daniel.} } @article {6933, title = {Preparation, characterization and applications of ultrathin cellulose acetate Langmuir-Blodgett films.}, journal = {Soft MatterSoft Matter}, volume = {3}, number = {8}, year = {2007}, note = {CAPLUS AN 2007:775775(Journal)}, month = {2007///}, pages = {1053 - 1063}, publisher = {Royal Society of Chemistry}, abstract = {The prepn. and characterization of mono- and multilayers of cellulose acetate (CA) Langmuir-Blodgett films on indium tin oxide and gold surfaces were studied in detail for the first time. These layers were characterized by their thickness, wettability, morphol. and structure using various surface techniques. The thickness of a monolayer of CA based on XPS measurement was one nanometer. Multilayers of CA Langmuir films were homogeneously transferred onto solid surfaces. The permeation of different mols. across these films was studied using electrochem. in various redox solns. Our findings suggest that a membrane like structure is formed, which is less permeable as the no. of layers increases. Finally, potential applications of these ultrathin films as supports for accommodating biomols. or metal nanoparticles are presented. [on SciFinder(R)]}, keywords = {cellulose acetate monolayer Langmuir film permeation nanoparticle support}, isbn = {1744-683X}, author = {Cohen-Atiya, Meirav and Vadgama, Pankaj and Mandler, Daniel.} } @article {6929, title = {Self-assembled monolayers on Au microelectrodes.}, journal = {Electrochem. Commun.Electrochemistry Communications}, volume = {9}, number = {12}, year = {2007}, note = {CAPLUS AN 2007:1346478(Journal)}, month = {2007///}, pages = {2827 - 2832}, publisher = {Elsevier B.V.}, abstract = {Long chain alkanethiols self-assembled monolayers (SAMs) formed on Au microelectrodes showed higher sensitivity towards defects than the same monolayers on macroelectrodes. The anal. of cyclic voltammetry and electrochem. impedance spectroscopy (EIS) expts. performed on covered microelectrodes were consistent with the formation of pinholes of about 10 nm in diam. Moreover, the EIS data exhibited a specific behavior that was interpreted invoking the short circuiting of the pinholes impedance by the surrounding surface of the microelectrode in the high frequency domain, whereas in the low frequencies, the surface covered by the SAM was assume to act as an insulator. [on SciFinder(R)]}, keywords = {self assembled monolayers gold microelectrode alkanethiols}, isbn = {1388-2481}, author = {Sheffer, Marisa and Vivier, Vincent and Mandler, Daniel.} } @article {6934, title = {Structural insight on organosilica electrodes for waste-free alcohol oxidations.}, journal = {Catal. Lett.Catalysis Letters}, volume = {114}, number = {1-2}, year = {2007}, note = {CAPLUS AN 2007:465029(Journal)}, month = {2007///}, pages = {55 - 58}, publisher = {Springer}, abstract = {Org. modification of sol-gel catalytic glassy electrodes made of a thin layer of organosilica doped with nitroxyl radical TEMPO (2,2,6,6-tetramethyl-1-piperidinyloxy) crucially enhances stability in the waste-free oxidn. of alcs. to carbonyls in H2O. Structural comparison between analogous films made of organosilica and unmodified SiO2 shows that the origin of the pronounced stable activity of the ORMOSIL film lies in high hydrophobic and also in the pronounced low degree of hydrophilicity. [on SciFinder(R)]}, keywords = {organosilica electrode wastefree alc oxidn, TEMPO organosilica electrode wastefree alc oxidn}, isbn = {1011-372X}, author = {Palmisano, Giovanni and Mandler, Daniel and Ciriminna, Rosaria and Pagliaro, Mario.} }