Nanoparticles modification with

Kaifer and coworkers showed interest in the modification of metal nanoparticles with organic monolayers prepared with suitable molecular hosts. They reported the preparation of water-soluble platinum and palladium nanoparticles modified with thiolated /1-cyclodexlrin (/ -CD) [69]. Nanoparticle synthesis was... 

Irantzu, L., et ah, Carbon nanotube surface modification with polyelectrolyte brushes endowed with quantum dots and metal oxide nanoparticles through in situ synthesis. Nanotechnology, 2010. 21(5) p. 055605. 

Figure 1.1 Stepwise production of metal-particle multilayer arrays. The attachment ofthe Au or Ag nanoparticles onto ITO-modified glass was achieved by using silanes that have an amine terminus group. This modification step allows for further modification with nanoparticles onto the surface of the ITO. After the nanoparticle attachment a redox-active bridging molecule was...

Figure 23 shows a biphasic toluene/perfluoro-2-butyltetrahydrofuran (Fluoro-inert FC-75) mixture containing dendrimer-encapsulated Pd nanoparticles complexed with poly(hexafluoropropylene oxide-co-difluoromethylene oxide) monocarboxylic acid prepared via the type of electrostatic modification de-... 

A.-J. Wang, J.-J. Xu, Q. Zhang and H.-Y. Chen, The use of poly(dime-thylsiloxane) surface modification with gold nanoparticles for the microchip electrophoresis, Talanta, 69 (2006) 210-215. 

The previous section described the connection of a biocomponent PSI to a gold nanoparticle-attached molecular wire with a methylnaphthoquinone moiety to construct a photosensor. In this section, we present a combination of this technique, to connect PSI to an artificial molecular wire, with the technique used for ITO modification with molecular wires described earlier for the development of a biophotoelectrode. 

Due to their small size and high surface area, nanoparticles can be applied to modify electrode surface property. Convenient and sensitive electrochemical sensors to various targets have been set up by using nanoparticle modification. The determination of acetaminophen in a commercial paracetamol oral solution was reported using a multiwall CNTs composite film-modified glassy carbon electrode with a detection limit of 50 nM (Li etal. 2006a). Heavy metal ions, such as ar-senite (Dai and Compton 2006 Majid et al. 2006) and lead ion (Cui et al. 2005),... 

Fig. 18 LSPR spectra of each step in the surface modification of Ag nanoparticles to form a biotinylated Ag nanobiosensor and the specific binding of streptavidin. (a) Ag nanoparticles before chemical modification, 2niax = 561.4 nm. (b) Ag nanoparticles after modification with 1 mM 1 3 11-MUA/l-OT, = 598.6 nm. (c) Ag nanoparticles after modification with 1 mM biotin, max = 609.6nm. (d) Ag nanoparticles aftermodification with 100 nM streptavidin, 2 ,ax = 636.6 nm. Reproduced with permission from [38]. Copyright2002American Chemical Society...

Our results revealed that silica nanoparticles may become slightly cytotoxic at high concentration even though they were nontoxic at low concentration. It has been reported that surface modification with aminosilanes increased the 50% lethal concentration of silica nanoparticles to Cos-1 cells to well above 1 mg/mL. By comparison, polylysine-modified silica showed cytotoxic effects (cell viability dropped to about 60% of control) to HNEl and HeLa cells at concentrations of 500 pg/mL or above. 

Polycarbonate modification with supersmall quantities of Cu/C nanocomposite is possible using FS of this nanocomposite which contributes to uniform distribution of nanoparticles in polycarbonate solution. Polycarbonate Actual was used as the modified polycarbonate. The FS of copper/carbon nanocomposite was prepared combining 1.0, 0.1,0.01, and 0.001% of nanocomposite in polycarbonate solution in ethylene dichloride. The suspensions underwent ultrasonic processing. 

The anti-fouling properties of ultrafiltration (UF) membranes can be improved by the modification with Ti02 nanoparticles. The nanoparticles of a size of 40 nm, or less, with an anatase crystal structure are prepared by the controlled hydrolysis of titanium tetraisopropoxide. 

Drugs like spantide II and ketoprofen, which are effective against allergic contact dermatitis and psoriatic plaque, can be transformed into nanogels by using hydroxypropyl methylcellulose (HPMC) and carbopol with the desired viscosity. BUayered nanoparticles from poly-(lactide-co-glycohc acid) and chitosan were prepared using surface modification with oleic acid. 

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