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Fibroblastic adhesion behaviour on films of a poly[(2-methoxyethyl vinyl ether) (PMOVE)-block-(l-lactic acid) (PLLA)], in which the surface was covered with PMOVE, was studied. Fibroblasts were sufficiently sensitive to identify crystalline/non-crystalline regions existing beneath the surface PMOVE layer. [ABSTRACT FROM AUTHOR]

N-Unsubstituted thienoisoindigo (TIIG) and its diphenyl derivative (dph-TIIG) are synthesized by using a tert-butoxy carbonyl (t-Boc) group as a protecting group. TIIG has a stacking structure analogous to isoindigo, and dph-TIIG is a hybrid of brickwork and herringbone structures. These compounds exhibit ambipolar transistor properties and particularly dph-TIIG shows the maximum hole and electron mobilities greater than 0.1 cm2 V−1 s−1. [ABSTRACT FROM AUTHOR]

A melt-drawing technique was applied to crystalline silicone, poly(tetramethyl-p-silphenylenesiloxane) (PTMPS) containing a rigid phenylene ring in the main chain. The resultant melt-drawn membrane had double-melting endotherms located at the usual 130 °C and the higher temperature of 160 °C. The higher melting temperature for PTMPS is expected, but has not been experimentally observed. A series of in situ structural analyses during heating also reveal that it is attributed to the melting of the extended chain crystals within the melt-drawn PTMPS membrane. Due to the highly oriented crystalline structure, the obtained melt-drawn PTMPS membrane is transparent but exhibits an excellent tensile modulus and strength of 2 GPa and 20 MPa, which are a few hundred times greater than those of commercial silicone elastomers. [ABSTRACT FROM AUTHOR]

Multilayer nanostructure analysis has been carried out for core–shell PbS/EuS nanocrystals by the combination of the synchrotron small-angle X-ray scattering (SAXS) method and energy-dispersive X-ray spectroscopy (EDS). SAXS patterns of a dilute hexane solution of the PbS/EuS nanocrystals were measured at a high signal-to-noise ratio by using synchrotron radiation. Initial structure models used for SAXS data analyses were obtained from EDS images of the particle where Eu and O atoms are localized only in the shell part of a quasi-cubic particle and, on the other hand, Pb and S atoms in the core. By simulating the intensity of SAXS using multilayer-cubic models with various core–shell electron density distributions, it was found that the particle structure was explained approximately as a trilayer-cubic model having the PbS core and the EuS/Eu2O3 shell. The diagonal length of the cubic particle was ca. 9.4 nm and the estimated thicknesses of EuS and Eu2O3 layers in the shell were ca. 1.9 and 2.9 nm at maximum, respectively. [ABSTRACT FROM AUTHOR]