Materials Literature
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Highly efficient down-conversion phosphors are demonstrated in a microcavity down-conversion white OLED. Using a down-conversion phosphors film, part of the blue light emitted from the microcavity blue OLED is converted to yellow and red light, resulting in white light emission. The photograph shows the image of a wor…
The effects of alkyl/alkoxy pendant chains on the electronic structure and properties of a typical poly(aryl-ethynylene) (PAE) system formed by phenylethynylene units and 1,3,4-thiadiazole rings are analyzed. Optical band gaps and electronic properties (electron affinity, LUMO energy and intramolecular reorganization…
In this study, aluminum (Al-6070)/alumina (Al 2 O 3 ) and Al-6070/graphite (Gr)-reinforced metal—matrix composites (MMCs) are fabricated by melt-stirring technique. The MMC bars and plates are prepared with varying the reinforced particles volume fraction ranging from 5% to 15%. The average reinforced particle sizes o…
A new incremental approach to the computation of vertical excitation energies is presented. The method works based on the definition of a dominant occupied orbital where the excitation takes place (natural transition orbital) and by localizing the remaining occupied space. The use of a reduced two-body expansion leads…
There have been many recent developments in compound semiconductor nanowire photovoltaic devices. Of these, advances in nanowire synthesis and performance enable nanowires to be implemented for efficient and low-cost solar-energy-harvesting devices. On the other hand, many challenges in device fabrication must be reso…
Piezoelectric sensors are useful for a range of applications, but passive arrays suffer from crosstalk and signal attenuation, which have complicated the development of array-based polyvinylidene difluoride (PVDF) sensors. We have used organic field-effect transistors, which are compatible with the low Curie temperatu…
Abstract Cellulose can be converted into 5‐bromomethylfurfural (BMF), a brand new biofuel or biofuel intermediate, in 80 % yield by treatment with HBr and LiBr and continuous extraction with toluene. From other carbohydrates and straw, BMF was also obtained in high yields. The mechanism of BMF formation was investigat…
To date, the use of gold for the synthesis of nanowires has proven to be nearly impossible to circumvent, regardless of the potential negative effects on the nanowires physical properties. In this paper, the synthesis of gallium arsenide nanowires without the use of gold as a catalyst is reviewed. The review focuses o…
Poly-(D,L-lactide-co-glycolide) (PLGA) nanoparticles have been widely studied for drug delivery. The aim of this study is to determine how cellular uptake of these nanoparticles is influenced by different surface properties, incubation time, particle concentration and cell types. Spherical coumarin-6 loaded PLGA nanop…
A ligand bis(4-imidazol-1-yl-phenyl)diazene (azim) incorporating an azo moiety at the center and two imidazole groups at the terminals forms two coordination polymers {[Co(azim)(2)(DMF)(2)]·(ClO(4))(2)·2DMF}(n) (1) and {[Cd(azim)(2)(DMF)(2)]·(ClO(4))(2)·2DMF}(n) (2) (DMF = N,N'-dimethylformamide) at room temperature.…
Compared with the dominant donor−acceptor approach to construct low-band-gap polymers, the quinoid strategy has been much less explored. However, a new series of polymers based on a prequinoid structure, thieno[3,4- b ]thiophene (TT), and a comonomer, benzo[1,2- b:4,5- b′ ]dithiophene (BnDT), have recently achieved ov…
Colloidal hollow silver nanoparticles were produced by a fast chemical reduction of silver oxide nanoparticles capped with glutathione. These hollow silver particles were surprisingly single crystalline and had almost perfect spherical shells. The reaction was further tested for the transformation of silver oxide nano…
Chitosan has proven antimicrobial properties against planktonic cell growth. Little is known, however, about its effects on already established biofilms. Oriented for application in food industry disinfection, the effectiveness of both medium molecular weight (MMW) chitosan and its enzymatically hydrolyzed product was…
Protein aggregation is a hallmark of many diseases, including amyotrophic lateral sclerosis (ALS), where aggregation of Cu/Zn superoxide dismutase (SOD1) is implicated in causing neurodegeneration. Recent studies have suggested that destabilization and aggregation of the most immature form of SOD1, the disulfide-reduc…
Lanthanide coordination polymers of the general formula [Ln 2 (L) 5 (NO 3 )(H 2 O) 4 ] n (Ln = Eu ( 1 ), Tb ( 2 ), Gd ( 3 )) supported by a novel aromatic carboxylate ligand 4-((1H-benzo[d]imidazol-1-yl)methyl)benzoic acid (HL) have been synthesized, characterized, and their photoluminescence behavior is examined. The…
A new controlled release polymer micelle was designed and synthesized based on the concept of the "AND" logic with two orthogonal molecular triggers, namely pH and reduction, for intracellular drug delivery. Specifically, a hydrazine functionalized PEO-b-PMAA block copolymer was used to attach adriamycin (ADR) through…
In analogy to proteins, the function of RNA depends on its structure and dynamics, which are encoded in the linear sequence. While there are numerous methods for computational prediction of protein 3D structure from sequence, there have been very few such methods for RNA. This review discusses template-based and templ…
Chiral recognition of monosaccharide enantiomers is translated into large-extent wettability switching and other macroscopic surface properties, e.g., volume, on a smart copolymer film containing dipeptide units by a cooperative hydrogen-bonding interaction. This work points to a promising direction for developing nov…
Decalins bearing two axial -NHCONHAr substituents and an ester-linked alkyl side chain have been synthesized and studied as anion receptors and transporters. The design relates to steroid-based "cholapods" but is more compact and less intrinsically lipophilic. Transport rates depend on both NHAr and the alkyl side cha…
2-Methyl-5-nitraminotetrazole (1) was formed by nitration of 2-methyl-5-aminotetrazole. 2-Methyl-5-aminotetrazole was obtained by an improved synthesis starting from sodium 5-aminotetrazolate, which is methylated with dimethyl sulfate in dimethyl formamide giving 2-methyl-5-aminotetrazole in 29% yield. Nitrogen-rich s…