State-of-the-art axisymmetric drop shape analysis (ADSA) techniques for the computation of interfacial tensions and contact angles by fitting the Laplace equation of capillarity to the shape and dimensions of pendant and sessile drops are presented. More accurate, efficient, and reliable versions of the technique for the measurement of contact angles from the volume and diameter of sessile drop...

Initial jet usually has a large primary droplet hanging at flying end before the onset of effective electrospinning. The primary droplet is undesired as its diameter is several orders of magnitude higher than that of electrospun nanofibres. A new method is used to derive micro-scaled initial jet and fine primary droplet under applied small-aperture needle by utilizing low solution flow rate and...

A study of gas transport properties of novel polynorbornenes with increasing length of an aliphatic pendant group R (CH3{, CH3(CH2)3{, CH3(CH2)5{, CH3(CH2)9{) has been performed. These polymers were synthesized using novel organometallic complex catalysts via an addition polymerization route. This reaction route maintained the bridged norbornene ring structure in the final polymer backbone. Gas...

In the title compound, C(24)H(24)N(2)O(4), the pendant benzene and naphthalene ring systems make dihedral angles of 87.9 (3) and 19.2 (3)°, respectively, with the central pyrazoline ring. In the crystal structure, weak C-H⋯O inter-actions help to establish the packing.

We compare two mechanisms that dominate the temperature-dependent changes in electronic structure for poly(3-hexylthiophene-2,5 diyl) (P3HT). Structural changes in the relative orientation and configuration of the aromatic ring backbone are observed to occur over a wide range in temperature and affect the local final state screening in photoemission. There are also changes in conductivity and c...

In the title compound, C(14)H(8)ClN(3)S, the dihedral angle between the approximately planar triple-fused ring system (r.m.s. deviation = 0.065 Å) and the pendant phenyl ring is 62.25 (5)°. In the crystal, mol-ecules are linked into infinite chains along the c-axis direction by C-H⋯N hydrogen bonds. Aromatic π-π stacking inter-actions [centroid-centroid distances = 3.7499 (8) and 3.5644 (8) Å] ...

Two dysprosium complexes, [(C5H4Me)2Dy(L(1))] (3) and [(L(1))Dy(μ-Cl)3{Li(tmeda)}]2 (4), with amino-functionalized pentadienyl ligands L(1) are described. Crystallographic studies of 3 and 4 show that the pendant amino group influences the pentadienyl conformation and the ligand hapticity. Electronic structure calculations reveal that L(1) has a strong influence on the orientation of the main m...

The sandglass graph is obtained by appending a triangle to each pendant vertex of a path. It is proved that sandglass graphs are determined by their adjacency spectra as well as their Laplacian spectra. © 2009 Elsevier Ltd. All rights reserved.