Benzene hydrogenation was investigated in the presence of a surface monolayer consisting of Pt nanoparticles of different shapes (cubic and cuboctahedral) and tetradecyltrimethylammonium bromide (TTAB). Infrared spectroscopy indicated that TTAB binds to the Pt surface through a weak C-H...Pt bond of the alkyl chain. The catalytic selectivity was found to be strongly affected by the nanoparticle...

We use recent nuclear parton distributions, among them the Hirai –Kumano –Nagai (HKN) and Eskola –Paukkunen – Salgado (EPS08) parameterizations, in our pQCDimproved parton model to calculate the nuclear modification factor, RAA′(pT ), at RHIC and at the LHC. At RHIC, the deuteron-gold nuclear modification factor for pions, measured at pT ≥ 10 GeV/c in central collisions, appears to deviate more...

A novel procedure for biopolymer surface nanostructuring with defined surface roughness and pattern dimension is presented. The surface properties of sputtered platinum layers on the biocompatible polymer poly(l-lactic acid) (PLLA) are presented. The influence of thermal treatment on surface morphology and electrical resistance and Pt distribution in ca. 100 nm of altered surface is described....

Platinum (Pt) nanoparticles were successfully electrodeposited in situ on an organic conductive polymer, poly(3,4-ethylenedioxythiophene) (PEDOT), using for the first time sinusoidal voltages of various frequencies in a chloroplatinic acid solution. The organic PEDOT matrix was electrodeposited on Pt electrode chips. The Pt electrode chips consist of a 150 nm Pt layer deposited on 100-oriented ...

We report on titanium contacts to n-type and p-type Si1ÿxÿyGexCy strained heteroepitaxial layers on (100)Si and material and electrical characterization of n-type and p-type platinum±silicide±germanide contacts to Si1ÿxÿyGexCy strained heteroepitaxial layers on (100)Si. Ti contacts to n-type Si1ÿxÿyGexCy show rectifying behavior at low doping levels but become ohmic as layers reach 10 cmÿ3. Ti ...

The fungal iterative nonreducing polyketide synthases (NRPKSs) synthesize aromatic polyketides, many of which have important biological activities. The product template domains (PT) embedded in the multidomain NRPKSs mediate the regioselective cyclization of the highly reactive polyketide backbones and dictate the final structures of the products. Understanding the sequence-activity relationshi...

Our study demonstrates that Pt(IV) derivative of cisplatin, with two axial PhB ligands, ctc-[Pt(NH3)2(PhB)2Cl2], is a very potent cytotoxic agent against many different human cancer cell lines and is up to 100 fold more potent than cisplatin, and significantly more potent than the Pt(IV) derivatives of cisplatin with either two hydroxido, two acetato or two valproato ligands. The high potency o...

We for the first time report a facile, wet-chemical strategy for the high-yield (approximately 100%) synthesis of ultralong Pt-on-Pd bimetallic nanowires (NWs) with the cores being Pd NWs and the shells being made of dendritic Pt, which exhibit high surface area and enhanced electrocatalytic activity towards methanol oxidation reaction.