Materials Literature
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Photoinduced electron transfer (ET) processes were studied by the time-resolved Maxwell displacement charge (TRMDC) method in bilayer structures consisting of an electron donor-acceptor and conductive polymer monolayers, porphyrin-fullerene dyad and polyhexylthiophene, respectively, both layers prepared by the Langmui…
Carbon-encapsulated nickel nanoparticles were used as the representative magnetic carbon-encapsulated nanoparticles for chemical functionalization. After oxidation with the mixed acid of H2SO4/HNO3 under a moderate ultrasonic bath, carboxylic acid groups (-COOH) were effectively generated on the fullerene-like carbon…
We used lanthanide-ion doped oxide nanoparticles, Y(0.6)Eu(0.4)VO(4), as donors in fluorescent resonance energy transfer (FRET) experiments. The choice of these nanoparticles allows us to combine the advantages of the lanthanide-ion emission, in particular the long lifetime and the large Stokes shift between absorptio…
The synthesis and detailed study of the new mononuclear spin crossover complex [Fe(II)H2L(2-Me)](ClO4)2 (where H2L(2-Me) = bis[((2-methylimidazol-4-yl)methylidene)-3-aminopropyl]ethylenediamine) are reported. Variable-temperature magnetic susceptibility measurements show the occurrence of a steep spin crossover center…
Dendritic BaMoO(4) microcrystals with lengths of about 5-15 microm were synthesized simply under ambient conditions by a microemulsion-mediated method within an ultrashort time. The products were characterized by X-ray powder diffraction (XRD), transmission electron microscopy (TEM), and field-emission scanning electr…
Nanometer-sized silver particles were synthesized by using didecylamine dithiocarbamates as the protecting ligands. With control of the initial ligand-metal feed ratios, the core diameter of the resulting particles was found to vary from about 5 to 2.5 nm, as determined by transmission electron microscopic measurement…
We enclosed cisplatin (CDDP), an anticancer drug, inside single-wall carbon nanohorns (SWNH) with holes opened by being heated from room temperature to a target temperature (475-580 degrees C) in flowing dry air, with an increase rate of 1 degrees C/min. The optimum target temperature was found to be 500 degrees C, in…
A carbonation route for synthesizing hydrophobic CaCO3 nanoparticles was described via an organic substrate inducing process. In this study, the synthesized octadecyl dihydrogen phosphate (C18H37OPO3H2) associated with Ca2+ by means of molecular recognition and induced the nucleation and growth of CaCO3. The CaCO3 nan…
The state of cobalt in two BEA zeolites was studied by XRD, TPR, and FTIR spectroscopy using CO and NO as probe molecules. One of the samples, CoAlBEA (0.4 wt % of Co), was prepared by conventional ion exchange and the other, CoSiBEA (0.7 wt % Co), by a two-step postsynthesis method involving dealuminated SiBEA zeolit…
A novel S4-symmetric icosanuclear manganese metalladiazamacrocycle was synthesized using a pentadentate ligand, N-3-phenyl-trans-2-propenoylsalicylhydrazide (H3L), that has a rigid and bulky terminal N-acyl group. A 20 cyclic repeat of an--(Mn-N-N)--linkage resulted in a highly puckered diaza-bridged 60-membered icosa…
Phytagel and nano-clay particles were used to improve the mechanical and thermal properties and moisture resistance of soy protein concentrate (SPC) resin successfully. SPC and Phytagel were mixed together to form a cross-linked structure. The Phytagel-modified SPC resin (PH-SPC) showed improved tensile strength, modu…
We report on the preparation of high performance field-effect transistors (FETs) based on large areas of aligned films of a TTF derivative, namely, tetrakis-(octadecylthio)-tetrathiafulvalene (TTF-4SC18). TTF-4SC18 assembles into one-dimensional stacks in which the long alkyl chains promote intermolecular π−π overlapp…
Herein we present, to the best of our knowledge, the first report of effective silylation of raw, pristine single-walled carbon nanotubes (SWNTs). Specifically, commercially available CoMoCAT SWNTs were functionalized at their ends and sidewalls (a) with trimethoxysilane and in a separate experiment, (b) with hexaphen…
Five novel polyoxometalate compounds built on the lacunary Keggin-type polyanion [GeW 11 O 39 ] 8- and trivalent rare earth ions (M = Nd, Sm, Y, Yb), [(CH 3 ) 4 N] 2 H 1.50 [Nd 1.50 (GeW 11 O 39 )(H 2 O) 6 ]·3H 2 O ( 1 ), [(CH 3 ) 4 N] 2 H 2.25 [Sm 1.25 (GeW 11 O 39 ) (H 2 O) 4 ]·3.75H 2 O ( 2 ), [(CH 3 ) 4 N] 2.50 H…
The syntheses and crystal structures of a series of zirconium(IV) and hafnium(IV) complexes with Dawson monovacant phosphotungstate [alpha2-P2W17O61](10-) and in situ-generated Keggin monovacant phosphotungstate [alpha-PW11O39](7-), which was obtained by a reaction of [alpha-PW12O40](3-) with Na2CO3, are described. K1…
Isothermal-isobaric molecular dynamics simulations are used to calculate the specific volume of models of different amorphous carbohydrates (glucose, sucrose, and trehalose) as a function of temperature. Plots of specific volume vs temperature exhibit a characteristic change in slope when the amorphous systems change…
Shape-controlled synthesis of metal nanostructures has opened many new possibilities to design ideal building blocks for future nanodevices. In this work, new types of monodisperse silver nanoplates with complex shapes, namely, a disklike shape and flowerlike shapes, were controllably synthesized in high yield by redu…
The binding of RGD peptides to integrins offers an excellent system to study the multivalent mediated changes in affinity that arise when peptides, displayed on the surface of a nanoparticle carrier, bind to integrins displayed on the cell membrane. The IC50 of an RGD nanoparticle for endothelial adhesion was 1.0 nM n…
We present experimental results evidencing tuning of permittivity by applied electric field in strontium titanate.
Researchers at Pennsylvania State University have developed a way of generating electricity from corn waste.