Dopamine functionalized carbon nanoparticles (CNPs) that can act as efficient photoinduced electron donor-acceptor systems depending on the pH of the medium have been synthesized. In acidic media, dopamine on CNPs exists as hydroquinone and serves as an electron donor while under alkaline conditions the corresponding quinone form of dopamine serves as a strong electron acceptor. Application of ...

An antibody-free diagnostic reagent has been developed based on the aggregation-induced colorimetric change of Ni(II)NTA-functionalized colloidal gold and silver nanoparticles. This diagnostic strategy utilizes the high binding affinity of histidine-rich proteins with Ni(II)NTA to capture and cross-link the histidine-rich protein mimics with the silver and gold nanoparticles. In model studies, ...

at the first step cufe2o4 nanoparticles were synthesized by a fast and facile microwave method. the obtained nanoparticles and modified carbon nano tubes were added to poly styrene matrix. the products were characterized through fourier transform infrared spectroscopy, x-ray diffraction, and scanning electron microscopy. vibrating sample magnetometer shows nanoparticles exhibit ferromagnetic be...

Sonogashira coupling of 9,9-bis(2-ethylhexyI)2,7-diethynyl-9H-fluorene (I) with 2,7-dibromo-9,9-bis(2ethylhexyl)-9H-fluorene (2) and dibromo-substituted electron accepting arylenes 5,7-bis(5-bromothiophen-2-yl)-2,3dihexylthieno[3,4-b)pyrazine (3), 4,7-bis(5-bromo-4-(2ethylhexyl)thiophene-2-yI)bis(benzothiadiazole) (4) or 4,9bis (5-bromo-4-{2-ethylhexyl)thiophen-2-yl)-6, 7dihexylthiadiazolo(3,4-...

interpenetrating polymer networks (ipn) were formed involving hydrophobic polybutyl acrylate (pba) and hydrophilic poly hydroxyethyl acrylate (phea). pba prepolymer was first formed in presence of ferric oxide nanoparticles (

Hard magnetic SrFe12O19 (SrM) nanoparticles were synthesized by a facile sonochemical reaction. The magnetic nanoparticles were then added to acrylonitrile-butadiene-styrene, polystyrene, polycarbonate, and poly sulfone to make magnetic nanocomposites. The magnetic properties of the samples were also investigated using an alternating gradient force magnetometer. The strontium ferrite nanop...

BACKGROUND Rapid local drug clearance of antimicrobials is a major drawback for the treatment of chronic periodontitis. In the study reported here, minocycline-loaded poly(ethylene glycol)-poly(lactic acid) nanoparticles were prepared and administered locally for long drug retention and enhanced treatment of periodontitis in dogs. METHODS Biodegradable poly(ethylene glycol)-poly(lactic acid) ...

The incorporation of self-assembled nanoparticles, a.k.a. hydroxylated nanoballs, into poly(2-hydroxyethyl methacrylate)(PHEMA) gives rise to a cross-linked network/hydrogel with enhanced interfacial interaction, whereas its inclusion in poly(methyl methacrylate)(PMMA) results in plasticization.

Multi-responsive amphiphilic gold nanoparticles (AuNPs) protected by graft poly(ether amine) have been prepared simply by a one-pot photochemical synthesis in the presence of thio-graft poly(ether amine) (gPEA-SH) and the mechanism was studied in detail.

A new method to assay protein poly(ADP-ribosyl)ation was proposed based on the interaction between the substrate of poly(ADP-ribosyl)ation nicotinamide adenine dinucleotide and gold nanoparticles, which needed no coupled enzymes or other modified catalytic substrate.