Materials Literature
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Surface-enhanced Raman Scattering (SERS) spectroscopy is applied to the study of the adsorption of benzoimidazolic fungicides benzimidazole (BIZ) and thiabendazole (TBZ) on silver mirrors. The influence of pH on the adsorption mechanism was investigated. In case of BIZ, two different adsorption mechanisms are deduced…
Since the first investigation of liposomes as drug carrier systems in chemotherapy, nanoscale carrier systems have attracted increasing attention in therapeutic and diagnostic medicine. Cellulose nanocrystals have attractive properties as nanoscale carriers for bioactive molecules in biomedical applications. To test w…
Absorption spectra of closed-shell Na_2, Na_3+, Na_4, Na_5+, Na_6, Na_7+, and Na_8 clusters are calculated using a recently implemented conserving linear response method. In the framework of a quasiparticle approach, we determine electron-hole correlations in the presence of an external field. The calculated results a…
We investigate the formation of fullerene-like structures from hot Carbon gas using classical molecular dynamics, employing Brenner's potential. In particular we examine the influence of different annealing strategies on fullerene yield, which is characterized by the distribution of coordination numbers and polygon nu…
Purpose The purpose of this paper is to develop a flexible, as well as a rigid, polyurethane (PU) product using polyols derived from renewable resource for suitable application. Design/methodology/approach Cardanol is converted into corresponding glycidyl ether by reacting it with epichlorohydrin. The resulting glycid…
Many applications of native cellulose, regenerated cellulose, and chemical cellulose derivatives, such as esters and ethers, involve contact of the material with a liquid phase that contains dissolved or dispersed matter. For most of these applications, detailed knowledge of the interactions of the cellulosic material…
The checklist of freshwater diatom species from Parana state was based on 88 studies, considering scientifi c papers and monographic works for Master´s Degree. A total of 1004 infrageneric taxa were recorded, including 775 species and 229 taxonomic varieties or forms. 265 taxa can be considered new records for Parana,…
The electronic transmission and conductance of a gapped graphene superlattice were calculated by means of the transfer-matrix method. The system that we study consists of a sequence of electron-doped graphene as wells and hole-doped graphene as barriers. We show that the transmission probability approaches unity at so…
We report on angle resolved photoemission spectroscopic studies on a parent topological insulator (TI), Bi$_2$Se$_3$. The line width of the spectral function (inverse of the quasi-particle lifetime) of the topological metallic (TM) states shows an anomalous behavior. This behavior can be reasonably accounted for by as…
We examine the molecular-atomic transition in liquid hydrogen as it relates to metallization. Pair potentials are obtained from first principles molecular dynamics and compared with potentials derived from quadratic response. The results provide insight into the nature of covalent bonding under extreme conditions. Bas…
Abstract Electroabsorption and electrophotoluminescence spectra of supramolecular porphyrin dimers in a solid film of poly(methyl methacrylate), PMMA, have been examined. The electroabsorption spectra in the Soret band region are fitted by the deconvolution of the corresponding absorption spectrum into four components…
A fiberglass-reinforced polymer blend with a new-generation flame retardant is studied with multienergy synchrotron X-ray tomography to assess the blend homogeneity. Relative to other composite materials, this sample is difficult to image due to low X-ray contrast between the fiberglass reinforcement and the polymer b…
This paper attempts to apply artificial intelligent techniques in high voltage applications and especially to estimate the critical flashover voltage (FOV) for polluted insulators, using experimental measurements carried out in an insulator test station according to the IEC norm and a mathematical model based on the c…
The effect of confinement and energy transfer on the dynamics of a molecular magnet, known as a model system to study quantum coherence, is investigated. For this purpose the well-known polyoxovanadate [V(15)As(6)O(42)(H(2)O)](6-) (V(15)) is incorporated into a protein (human serum albumin, HSA) cavity. Due to a huge…
Silicon surface is modified using electrochemical deposition methods to improve its reactivity for photoelectrochemical reduction of CO2. Starting from a solution of CuSO4, copper is deposited by potentiostatic and a pulsed deposition technique providing metal particles. These catalytic sites lower the overpotential f…
Abstract Star‐shaped poly(phenoxy propylene sulfide) [poly (PPS)] were synthesized by anionic polymerization using a trifunctional initiator ( I 1 ) derived from a trifunctional five‐membered cyclic dithiocarbonate and benzyl amine. Conditions for the anionic polymerization of PPS were optimized to obtain polymers wit…
The crystallization of polyethylene/fullerene (PE/C60) nanocomposites with different fullerene content was investigated at different temperatures by means of molecular dynamics simulation. It is found that there is a critical temperature for PE/C60 nanocomposite crystallization. The high C60 content makes the low crit…
Abstract A new structurally simple motif, where two anthracene moieties are linked by a 2‐aza‐1,3‐butadiene bridge has been synthesized and characterized. This new molecular probe senses Yb 3+ metal cations through two different channels: a colour change from yellowish to orange, which can be used for its “naked‐eye”…
Abstract Ring opening polymerization of ε‐caprolactone was realized in the presence of monomethoxy poly(ethylene glycol) with M n = 1000 and 2000, using Zn(La) 2 as catalyst. The resulting PCL‐PEG diblock copolymers with CL/EO repeat unit molar ratios from 0.2 to 3.0 were characterized by using DSC, WAXD, SEC, and 1 H…
The control of the assembly of nanostructures of dye-coded oligonucleotide−silver nanoparticle (DOSN) conjugates (silver nanoparticles cofunctionalized with thiol modified DNA and a Raman reporter molecule) in a sandwich assay format with single base discrimination in an unmodified target oligonucleotide is reported.…