Materials Literature
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In tropical countries such as Indonesia and Malaysia, the empty fruit bunches are wastes of the oil palm industry. The wastes are abundantly available and has reached a level that severely threats the environment. Therefore, it is a great need to find useful applications of those waste materials; but firstly, the mech…
The atomic bonding configuration of ultrananocrystalline diamond (UNCD)/hydrogenated amorphous carbon (a‐C:H) films prepared by pulsed laser ablation of graphite in a hydrogen atmosphere was examined by near‐edge X‐ray absorption fine structure spectroscopy. The measured spectra were decomposed with simple component s…
The effect of iodide ion on the corrosion inhibition of aluminium in NaOH in the presence of Gum Arabic (GA) was studied using weight loss and hydrogen evolution techniques at 303 and 313 K. The results obtained showed that inhibition efficiency increased with increasing GA concentration. The inhibiting action of GA w…
Research on the vacuum surface flashover mechanisms of insulating material under nanosecond pulses is important for the design and manufacture of high-power pulse generators. Here, the vacuum surface flashover characteristic of epoxy composites filled with different microfillers Al2O3middot3H2O , Al2O3, BaTiO3, and Ti…
A new class of discotic liquid crystals based on oligothiophenes - attached and fused triazatruxenes, were synthesized in high yields. The synthesis was carried out first by microwave-assisted six-fold Stille cross-coupling reactions to yield the hexakis-oligothiophenes - substituted triazatruxenes TAT-T1 and TAT-T2 a…
We used configurational entropy theory to model the viscosity (η) of hydrous melts of NaAlSi 3 O 8 , haplogranite (SiO 2 -KAlSi 3 O 8 -NaAlSi 3 O 8 ), and complex (natural) granite composition from available measurements and recently published configurational heat-capacity data. The equation log η = A e + B e /TS conf…
Polymer–metal complex micelles (PMCMs) containing cisplatin (cis-dichlorodiammineplatinum(II), CDDP), an anticancer drug, were prepared by a coordination bond of CDDP to dendrimer phthalocyanine (DPc) and poly(ethylene glycol)-block-poly(L-aspartic acid) (PEG-PLAn; molecular weight of PEG segment = 12 000 g mol−1; pol…
One brand-new colloidal ensemble of single-sized CdTe nanocrystals, exhibiting a sharp first excitonic absorption peak at 427 nm and bright bandgap photoluminescence at 427 nm with narrow full width at half maximum (FWHM) of only ca. 10 nm, was synthesized in 1-octadecene (ODE) via a non-injection one-pot approach whi…
We describe a new method for the functionalization of single- and multi-walled boron nitride nanotubes. Our approach is based on the affinity of the nitrogen atoms of quinuclidine molecules (Lewis bases) for boron atoms incorporated in the nanotubes network (Lewis acids). Specific substitution of the quinuclidine skel…
Nanosize-controllable Cu, Ag, Pd, Ni, CuPd alloy and Cu-Ag bimetal encapsulated in inert carbon shells can be synthesized by carbonization of metal-cyclodextrin complexes with a remarkable capability of experimentally determining the size-dependent melting temperature depression of many metal or alloy nanoparticles.
The crystal chemistry of the cuprate apatites A(I)(4)A(II)(6)(PO(4))(6)Cu(x)O(y)(H)(z) (A = Ca, Sr and Ba) was investigated by powder X-ray (PXRD) and neutron diffraction (PND) and X-ray photoelectron spectroscopy (XPS). The refined crystal structures confirmed earlier X-ray diffraction studies that showed copper resi…
“One-component” chitosan-based multilayer films have been formed and characterized for the first time. Two derivatives of chitosan containing oppositely charged strong ionic groups were synthesized for that purpose. Low molecular weight chitosan was modified by glycidyltrimethylammonium chloride to obtain the cationic…
We present the formalism and demonstrate the use of the overlapping muffin-tin approximation. This fits a full potential to a superposition of spherically symmetric short-ranged potential wells plus a constant. For one-electron potentials of this form, the standard multiple-scattering methods can solve Schrdingers' eq…
The LSW theory of Ostwald ripening, predicts a linear variation of the cube of the average radius of a dispersion as a function of time (R(3)vs. t) [I. M. Lifshitz, V. V. Slyozov, J. Phys. Chem. Solids, 1961, 19, 35-50; C. Wagner, Z. Elektrochem., 1961, 65, 581-591]. It also envisages a left-skewed drop-size distribut…
Anode-supported planar solid oxide fuel cells (SOFCs) were fabricated by a single-step cofiring process. It comprised of a porous Ni + yttria -stabilized zirconia (YSZ) anode support, a porous and fine-grained Ni + YSZ anode active layer, a dense YSZ electrolyte, a fine-grained porous Ca-doped La Mn O 3 ( LCM ) + YSZ…
Gold nanoparticle monolayers have been deposited on amino-functionalized commercial glass and on sol–gel glass surfaces using a fast chemisorption protocol. The nanoparticle surface coverage could be tuned by varying the deposition conditions. The nanoparticle monolayers have been embedded into SiO2 sol–gel matrices t…
We show that hexagonally ordered structures can either be grown to form a self-ordered pore or tube array, depending only on the electrochemical conditions during anodization of Hf in fluoride containing electrolytes. The water content in the electrolyte is the main factor affecting the transition from pores to tubes…
Zinc perfluoro-fluoroalkyl-phthalocyanine, synthesized in high yield, does not exhibit electron loss, does not aggregate in solution, is photostable and produces (1)O(2) in very high quantum yields. Aerobic photo-oxygenation of an external substrate occurs without catalyst self-oxidation. The encapsulation of a metal…
The synthesis and characterization of two dinuclear HfIV and ZrIV complexes sandwiched between 2 mono-lacunary alpha-Keggin polyoxometalates (POMs), i.e., (Et2NH2)8[{alpha-PW11O39Hf(micro-OH)(H2O)}2].7H2O (Et2NH(2)-1) and (Et2NH2)8[{alpha-PW11O39Zr(micro-OH)(H2O)}2].7H2O (Et2NH(2)-2), are described. [Note: the moietie…
Surface wettability is dependent to surface energy of the material. Therefore the surface wettability basically reflects its intrinsic surface property and it has been thought that it is hard to be controlled arbitrarily. For example, inorganic materials such like metal oxides usually exhibit relatively hydrophilic pr…