Materials Literature
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Abstract In this article, we examine intumescent polylactide, which exhibits a nonburning behavior upon heating. The combination of melamine and ammonium polyphosphate incorporated in the polylactide allowed us to obtain an intumescent char and low flammability. The incorporation of an additional ingredient such as or…
Flow-induced conformational ordering in the supercooled isotactic polypropylene (iPP) is studied with in situ Fourier transform infrared spectroscopy (FTIR) coupled to an extrusion slit die. At temperature around the normal melting point of iPP, helices with monomer numbers up to 12 and 14 can be induced by shear. A w…
Lignosulfonic acid (LS1) and partially desulfonated lignosulfonic acid (LS2) were oxidatively deposited on a preactivated glassy carbon (GC) electrode, giving rise to redox active films showing three distinct redox couples at midpeak potentials (E degrees ') of 0.22, 0.44, and 0.53 V (vs Ag/AgCl in 0.1 M H(2)SO(4)). T…
Differential cross sections (DCSs) for elastic scattering of electrons from pyrimidine $({\text{C}}_{4}{\text{H}}_{4}{\text{N}}_{2})$ are presented for incident energies from 50 to 300 eV. The measurements were performed using a cross beam technique, for scattering angles from $20\ifmmode^\circ\else\textdegree\fi{}$ t…
Tunable single-molecule magnets: The spin-level landscape in a series of Fe(III) (4) single-molecule magnets with propeller-like structure was analyzed by means of high-frequency EPR spectroscopy. The zero-field splitting parameter D of the ground S=5 spin state correlates strongly with the pitch of the propeller gamm…
A series of transition metal coordination polymers with azide and flexible zwitterionic dicarboxylate ligands was synthesized and structurally and magnetically characterized. These compounds are formulated as [M(2)(L(1))(N(3))(4)] (L(1) = 4,4'-trimethylenedipyridinio-N,N'-diacetate and M = Mn, 1; Co, 2; and Ni, 3) and…
A series of BaTiO 3 (BT)‐based ferroelectric glass–ceramics have been prepared via controlled crystallization by varying the Ba/Ti ratio in an aluminum silicate glass composition, and the subsequent microstructure, phase evolution, and dielectric properties have been investigated. X‐ray diffraction indicated that an i…
A single crystal of Bi 2 ZnOB 2 O 6 has been grown with sizes up to 18 × 13 × 6 mm 3 by the top-seeded growth method for the first time with high quality. It crystallizes in the orthorhombic system, space group Pba 2 with unit-cell parameters a = 10.8200(7) Å, b = 11.0014(7) Å, c = 4.8896(3) Å, Z = 4, V = 582.03(6) Å…
BACKGROUND: Because of its cellular uptake pattern, ferumoxtran-10 may be potentially useful for the imaging of a variety of diseases (eg, atheroma, multiple sclerosis, stroke, renal graft rejection, glomerulonephritis and brain tumors, in addition to differentiation of metastatic and nonmetastatic lymph nodes). The a…
A general one-step route has been developed for the selective synthesis of magnesium silicate hollow spheres, core−shell spheres, and nanotubes. The formation mechanism was studied. The concentration of NaOH played an important role in the synthesis of hollow and core−shell spheres, while the addition of glycol played…
It is known that localized surface plasmon resonance (LSPR) is responsible for the surface-enhanced spectroscopic processes of metallic nanoparticles and thus LSPR spectroscopy has become a powerful technique for chemical and biological purposes. In this contribution, we present a simple homogeneous Hg2+ assay by meas…
Conjugated polymers with alternating main chain structures of zinc porphyrin−furan (PZnPF) and zinc porphyrin−thiophene (PZnPT) have been synthesized by palladium(0)-catalyzed Stille coupling reaction. The optical, electrochemical, photophysical, and photovoltaic properties of PZnPF and PZnPT were investigated to eluc…
The electronic structure of a prototype Kondo system, a cobalt impurity in a copper host is calculated with accurate taking into account of correlation effects on the Co atom. Using the recently developed continuous-time QMC technique, it is possible to describe the Kondo resonance with a complete four-index Coulomb i…
Femtosecond dynamics of coherent optical phonons in $\text{GeTe}/{\text{Sb}}_{2}{\text{Te}}_{3}$ superlattices (SLs), a new class of semiconductor SLs with three different states, have been investigated by using a reflection-type pump-probe technique at various lattice temperatures. The time-resolved transient reflect…
Optical properties near the band edge of hexagonal boron nitride were studied at 8 K. The photoluminescence spectrum shows two series of bands, namely, sharp (S) and diffuse (D), which are also distinguished by their fast (0.6 ns) for S and slow (5 ns) for D radiative decay time. Each series is composed of four bands…
Water-soluble single-walled nanotubes (SWNTs) are being tested as contrast agents for medical imaging and for the delivery of therapeutically active molecules to target cells. However, before they become used commercially, it will be essential to establish their subcellular distribution and whether they are cytotoxic.…
Up to now, little effort has been made to exploit large-area high-throughput patterning by block copolymer (BCP) lithography to generate nanostructured substrates with periods well below 100 nm for surface-enhanced Raman scattering (SERS). We show that simple BCP-templated galvanic displacement reactions yield dense a…
Five new nickel(II) complexes [Ni(2)L(2)(N(3))(2)(H(2)O)(2)] (1), [Ni(2)L(2)(NO(3))(2)] (2), [Ni(2)L(2)(O(2)CPh)(CH(3)OH)(2)]ClO(4).0.5CH(3)OH (3), [Ni(3)L(2)(O(2)CPh)(4)] (4), and [Ni(2)L(2)(NO(2))(2)](n) (5) have been synthesized by using a tridentate Schiff base ligand, HL (2-[(3-Methylamino-propylimino)-methyl]-ph…
Carbon nanotubes hold great promise for their use as a platform in nanomedicine, especially in drug delivery, medical imaging, and cancer targeting and therapeutics. Herein, we present a facile approach to modifying carbon nanotubes with multifunctional poly(amidoamine) (PAMAM) dendrimers for cancer cell targeting and…
We report on scanning tunneling microscopy and spectroscopy of grain boundaries in highly oriented pyrolytic graphite. Grain boundaries showed a periodic structure and an enhanced charge density compared to the bare graphite surface. Two possible periodic structures have been observed along grain boundaries. A geometr…