By coating plasmonic nanoparticles (NPs) with thermally responsive liquid crystals (LCs) it is possible to prepare reversibly reconfigurable plasmonic nanomaterials with prospective applications in optoelectronic devices. However, simple and versatile methods to precisely tailor properties of liquid-crystalline nanoparticles (LC NPs) are still required. Here, we report a new method for tuning s...

The reactions of Pb(C10 ) , and Pb(SCN) with meso-5,7,7,12,14,14-hexamethyl- 1,4,8,ll ,tetra-azacyclotetradecane (C ,H ,N = L) yielded colorless crystals of LPb(CI O ) (1) and LPb(NCS) (2), respectively. Their structures were determined by X-ray crystallography. Crystal data: 1 monoclinic, P 2 /c, a =11.293 (4) ?, b = 16.382 (6) ? , c = 21.518(4) ?, ? = 92.14(2)?, Z = 4, MoKa, 1824 obser...

Monolithic aerogels of high molecular weight polyethylene (Mw= 3x106- 6x106 g/mol) have been prepared by solvent extraction with supercritical carbon dioxide from thermoreversible gels prepared in decalin. These low density and highly porous aerogels present an apparent porosity up to 90%. The aerogel morphology observed by scanning electron microscopy (SEM) is characterized by spherulitic stru...

A novel bis-imidazolyl tetradentate Schiff base ligand (H2L) has been prepared from the condensation of imidazole2-carbaldehyde and 1,3-diaminopropane. The ligand reacts with copper(II) perchlorate in neutral medium to yield the mononuclear complex [Cu(H2L)(ClO4)]ClO4‚H2O. A single-crystal X-ray diffraction study confirmed the expected structure, C11H16N6O9Cl2Cu, triclinic, P1h, a ) 8.875(2) Å,...

The RKKY interaction between rare-earth (RE) ions in high-Tc superconductors is considered at T ≪ Tc. It is shown that this interaction consists of two terms: conventional oscillating one and the positive term, which is proportional to the gap function and decreases in the 2D case inversely proportional to the distance. In the antiferromagnetic state of the RE subsystem this positive interactio...

In this study, novel 1-substituted-phenyl-3,5-diphenylformazans were synhesized with –Br group at p-positions. Their structures were elucidated by elemental analyses, UV–vis and IR spectroscopy and X-ray single crystal structure determination. Their UV–vis spectra indicated that their λmax showed a shift amount of which was dependent upon the position of the substituent on the ring. The title c...

2014 Dynamic resistance, noise spectrum and electron diffraction studies on electron irradiated orthorhombic TaS3 were performed in the temperature range of 75 K-280 K. At low defect concentrations ( 10-4 displacement per Ta atoms) the threshold field of the nonlinear conductivity (ET) increases linearly with the irradiation dose in spite of the fact that there is hardly any effect on the Peier...

Cu K edge and L3 edge x-ray absorption near edge structure (XANES) and Cu L3 x-ray photoelectron spectroscopy (XPS) of YBa2Cu307 have been measured to determine the local electronic structure. The K-edge XANES have been interpreted by multiple scattering approach. The data show the formation of the 3 d 9 ~ (where L is a hole in the oxygen derived band, ligand hole ) many body configuration in t...