Synthesis of polystyrene/polythiophene core/shell ..

N2 - Template-based electropolymerization of terthienyl-carboxylate-protected TiO2 nanoparticles (1-TiO2 NPs) in a track-etched membrane template produced the corresponding hybrid nanotubes (NTs) of the TiO2 NPs and polythiophene. New multicomponent hybrid NTs consisting of TiO2 NPs, polythiophene, and porphyrin can be synthesized.

Synthesis and Electrical Property of Polythiophene/Sol …

T1 - Synthesis of TiO2-polythiophene hybrid nanotubes and their porphyrin composites

toward the preparation of nanoparticles of polythiophene and ..

Over the last decade, nanomedicine has emerged as a new field of medicine where nanoscale materials has been used to deliver a wide range of pharmaceutically active organic compounds such as drugs, genes, and imaging agents. There remain challenges, however, to synthesise and formulate organic compound based nanostructured materials, although the synthesis of inorganic nanomaterials has indeed been extensively studied over decades with good control of particle shape and size. Consequently, special formulation techniques are required to disperse the solid organic materials into water, maintain the dispersion for a certain time period, and functionalise the organic nanoparticles. Using selected experimental systems, we propose taking a radically new fast approach for making nanoscale particles and formulating them, which will not only do away with the grinding process but will also lead to a better understanding of the basic science behind product formulation allowing us to develop new improved products. The proposed method is based on the so-called Lab-on-a-Chip concept which represents the potential to shrink conventional bench chemical systems to the size of a few centimeters square. The main feature of such micro systems is the micron scale channel network with a channel width of about 100 micrometers (about the diameter of a human hair), where chemicals are brought together, using a variety of pumping techniques, for synthesis, separation or analysis. Relevant to the formulation of organic nanoparticles, the advantages of microfluidic and Lab-on-a-Chip technology will enable us to not only make particles of a very well controlled size distribution, but also integrate a number of measurement systems into the microreactor in order to monitor the process when the particles are generated, and more importantly, to institute real time feedback. It is envisaged this development will, for the first time, let us understand more about what is important in formulation science and how we can develop new strategies for new and better products in the future.

Synthesis of Polythiophene/Poly(3,4 …

(2011).We report the preparation of native polythiophene (n-PT)/[6,6]-phenyl-C61-butyric acid methyl ester (PCBM) composite nanoparticlesfrom a poly[3-(2-methylhex-2-yl)oxy-carbonyldithiophene] (P3MHOCT)/PCBMaqueous dispersion prepared from an ultrasonically generated emulsion.

Synthesis of MOS 2 nanotube/polythiophene …

Semiconducting polymer nanoparticles have attracted increasing interest for the facile fabrication of organic electronic devices. These nanoparticles could provide the ability to control thin film morphology independently of optical and electronic properties. Using poly(3-hexylthiophene), we demonstrate surfactant-free synthesis and characterization of size-controlled, semicrystalline polymer nanoparticles. Our method produces discrete nanoparticles that can be deposited from solution into thin films. By controlling the molecular weight, polydispersity, and regioregularity of the polymer as well as varying its initial solution concentration, we tune both the size and crystallinity of the resulting nanoparticles. Organic field effect transistors (OFETs) using nanoparticles made from this method produce good semiconducting devices with hole mobilities on the order of 10−3 cm2/(V s). This approach to forming polymer nanoparticles is attractive for the introduction of solution-processable, well-characterized nanoscale crystalline domains of a variety of conjugated polymers and should be useful for the fabrication and optimization of organic electronic devices.

The synthesis of colloidal silver nanoparticles ..

This paper describes a sol−gel approach for the coating of superparamagnetic iron oxide nanoparticles with uniform shells of amorphous silica. The coating process has been successfully applied to particles contained in a commercial ferrofluid (e.g., the EMG 304 of Ferrofluidics) and those synthesized through a wet chemical process. The thickness of silica coating could be conveniently controlled in the range of 2−100 nm by changing the concentration of the sol−gel solution. Fluorescent dyes, for example, 7-(dimethylamino)-4-methylcoumarin-3-isothiocyanate (DACITC) and tetramethylrhodamine-5-isothiocyanate (5-TRITC), have also been incorporated into the silica shells by covalently coupling these organic compounds with the sol−gel precursor. These multifunctional nanoparticles are potentially useful in a number of areas because they can be simultaneously manipulated with an externally applied magnetic field and characterized in situ using conventional fluorescence microscopy.

nanoparticles and second the synthesis of the shell

Poly(thiophene) (PTh) nanoparticles with various sizes were directly prepared by Fe3+-catalyzed oxidative polymerization of thiophene with varying hydrogen peroxide (H2O2) concentrations. In the polymerization, the FeCl3/H2O2 (catalyst/oxidant) combination system was used as an initiator couple. Under the optimized reaction condition, percentage monomer conversions were >90%. With increasing H2O2 molar concentration from 2.35 to 5.88 M, the average sizes of the PTh nanoparticles decreased from 51 to 12 nm, and their photoemission wavelengths shifted from red to blue color at the maximum excitation wavelength (λUVmax = 400 nm). However, the molecular weights of all PTh nanoparticles were ∼3500 g/mol. As a result, we could tune the emitting colors that resulted from variations of the effective conjugation chain length by manipulating the size of PTh nanoparticles.