Materials Literature
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Lanthanide(III) complexes of the enantiopure chiral hexaaza tetraamine macrocycle L, 2(R),7(R),18(R),23(R)-1,8,15,17,24,31-hexaazatricyclo[25.3.1.1.0.0]-dotriaconta-10,12,14,26,28,30-hexaene, as well as of its meso-type 2(R),7(R),18(S),23(S)-isomeric macrocycle L1, have been synthesized and characterized by spectrosco…
The overarching goal of this two-part paper is to provide a more unified understanding of NiTi shape memory alloys intended for use in structural engineering applications. Here, we present results from basic materials characterization of large diameter polycrystalline NiTi bars. Deformation processed bars with diamete…
Ammonium aluminum carbonate hydroxide (AACH), a material isostructural with the mineral dawsonite (NaAl(OH) 2 CO 3 ), leads to finely dispersed and high-surface area Al 2 O 3 upon thermal decomposition. This family of compounds exhibit memory effect, i.e., the dawsonite structure can be recovered upon treatment of the…
The growth of boehmite nanostructures at low temperature using a soft chemistry route with and without (PEO) surfactant is presented. Remarkably long boehmite 1D nanotubes/nanofibers were formed within a significantly short time by changing the reaction mechanism of aluminum hydroxide. By using the PEO surfactant as a…
Highly aligned conducting polymer nanowires have been grown between two nanometer-scale metal electrodes, providing a simple way to incorporate single and multiple nanowires into pre-patterned electrical circuits. A highly sensitive nanowire chemical sensor has been fabricated as a proof-of-concept of this method and…
Two isomorphous one-dimensional chain complexes Co(NCS)2(Him)2 (1) and Mn(NCS)2(Him)2 (2) (Him = imidazole) have been prepared and characterized structurally. Both 1 and 2 crystallize in the monoclinic system, space group P21/n, and the structures consist of one-dimensional polymeric chains in which metal ions are bri…
A series of one-dimensional (1-D) telluridoindate compounds built from InTe 4 tetrahedra sharing opposite edges were synthesized, and the structures of the {[InTe 2 - ]} ∞ chains were classified as three types. Compound [Zn(taa)(μ-tren) 0.5 ][InTe 2 ]Cl ( Ia ) has a common structure feature of a 1-D straight chain (ty…
High-sensitivity and visible-blind ultraviolet (UV) photoconductive detectors based on SrTiO(3) single crystal with interdigitated electrodes are reported. The responsivities of photovoltage and photocurrent can reach 2.13x10(5) V/W and 213 mA/W, respectively, at 330 nm at ambient temperature, and the corresponding qu…
Haloalkane dehalogenase from Xanthobacter autotrophicus (XaDHL) was overexpressed under different isotopic conditions to produce fully hydrogenous (h-XaDHL) and perdeuterated (d-XaDHL) enzyme forms. Deuterium atoms at labile positions were allowed to back-exchange during purification and hydrogenous solutions were use…
Abstract Multiwalled carbon nanotubes (MWNTs) were effectively functionalized with KMnO 4 in the presence of a phase‐transfer catalyst at room temperature. The hydroxyl functionalized MWNTs were reacted with a vinyl‐group carrying silane‐coupling agent and the terminal vinyl groups were used to fabricate polystyrene (…
Abstract Frontal polymerization (FP) has been successfully applied, for the first time, to obtain polymeric nanocomposites containing polyhedral oligomeric silsesquioxanes (POSS) in an amine‐cured epoxy matrix. Variations of maximum temperature ( T max ) and front velocity ( V f ) have been studied. A comparison of th…
Abstract The chemical strain effect describes a mechanism of stress relaxation in solids that can be attributed to the conversion of elastic energy into chemical energy of point defects. Experimental confirmation of this effect is presented here for the case of thin self‐supported films of the ionic conductor Ce 0.8 G…
The preparation and characterization of porous scaffolds from chitosan-PCL blends by freeze extraction, freeze gelation and freeze drying is reported. Using freeze extraction, stable structures were obtained only from PCL, but these were not porous. No stable scaffolds were obtained using the freeze gelation process.…
Abstract A theoretical study on quantum yields (QYs) of the photochromic cyclization and cycloreversion reactions is presented. It is shown that the thermodynamic relative stability of various energy minima on the ground state is primarily important for the cyclization reactions. On the other hand, the profile of the…
The genomics era has seen the propagation of numerous databases containing easily accessible data that are routinely used by investigators to interpret results and generate new ideas. Most investigators consider data extracted from scientific databases to be error-free. However, data generated by all experimental tech…
Small-diameter vascular grafts are potential substitutes for damaged vessels in patients, but most biodegradable grafts available now are not strong enough. The present study examined the burst strength, radial compliance, suture retention strength for a novel biodegradable tubular scaffold and investigated its behavi…
Abstract Variation in collagen fibril diameter in nature is a major factor determining biological material properties. However, the mechanism resulting in this fibril diameter difference is not clear and generally assumed to be cell‐dependent. It is certainly not possible so far to engineer this into implantable scaff…
Freezing and melting behavior of nitrobenzene in mesoporous silicon with different pore size and with different porous structure have been studied using 1 H NMR cryoporometry. With the bulk phase surrounding the porous monoliths, in materials with uniform channel-like pores distinct pore-size-dependent freezing and me…
An atomistic force field has been adapted for use in molecular dynamics simulations of molecular materials that contain azobenzene (AB) functional groups. Force field parameters for bonded interactions and partial charges in the AB unit have been derived from ab initio molecular dynamics reference calculations. First…
Covalent grafting of biomolecules could potentially improve the biocompatibility of materials. However, these molecules have to be grafted in an active conformation to play their biological roles. The present work aims at verifying if the surface conjugation scheme of fibronectin (FN) affects the protein orientation/c…