Materials Literature
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We designed a biocompatible carrier for controlled release of hydrophobic drugs. The designed carrier was prepared by sonicating oil in a protein aqueous solution forming a protein nanocontainer composed of an inner gel core and an outer protein shell. Two model drugs were loaded into the designed nanocontainers by di…
The title complexes catalyze the aerobic oxidations of hydrocarbons using visible light and atmospheric oxygen as oxygen source in sequences employing photodisproportionation reactions. The putative oxidants, ruthenium(V)-oxo porphyrin species, can be detected and studied in real time via laser flash photolysis method…
In natural photosynthetic systems, a large array of chlorophyll molecules surrounds a single reaction center and channels the absorbed solar energy to the reaction center, ultimately resulting in ATP production. Dendrimers are well-defined tree-like macromolecules having numerous chain ends all emanating from a single…
Abstract Potassium Dihydrogen Phosphate (KDP) is an excellent inorganic nonlinear optical (NLO) material with different device applications. Most of amino acids possess NLO property; therefore, it is of interest to dope them in KDP crystals. In the present study, amino acid L‐alanine doped KDP crystals were grown by s…
A lot of pep: Simple changes to the sequence of peptide nanostructures were found to maintain stability and enhance the activity of peptide-based palladium nanocatalysts. A histidine to alanine substitution in the peptide chain afforded an increase in turnover frequency from 2234 to 5224, which suggests that the pepti…
n-ZnO/p-Si heterojunction light-emitting diodes (LEDs) show weak defect-related electroluminescence (EL). In order to analyze the origin of the weak EL, the energy band alignment and interfacial microstructure of ZnO/Si heterojunction are investigated by x-ray photoelectron spectroscopy. The valence band offset (VBO)…
This paper studies an ultrasonic wave dispersion characteristics of a nanorod. Nonlocal strain gradient models (both second and fourth order) are introduced to analyze the ultrasonic wave behavior in nanorod. Explicit expressions are derived for wave numbers and the wave speeds of the nanorod. The analysis shows that…
Silicon quantum dots that emit light in the wavelength range of 300 to 450 nm are fabricated. Size-tunable UV luminescence is achieved by precise control of the diameter of the nanocrystals and complete surface passivation with alkoxy monolayers.
The perimeter of oxide-supported metal particles is suggested to be of pivotal importance for various catalytic processes. To elucidate the underlying effects, the electronic properties of edge and corner atoms of planar Au clusters on MgO/Ag(001) thin films have been analyzed with scanning tunneling microscopy and el…
Cocrystals have been increasingly recognized as an attractive alternative delivery form for solids of drug products. In this work, salicylic acid was employed as a cocrystal former with the nicotinic acid, dl -phenylalanine, and 6-hydroxynicotinic acid (6HNA). Also, 3,4-dihydroxybenzoic acid with oxalic acid was studi…
In this review we discuss the development of paramagnetic liposomes incorporating MRI contrast agents and show how these are utilized in cellular imaging in vitro. Bi-functional, bi-modal imaging paramagnetic liposome systems are also described. Next we discuss the upgrading of paramagnetic liposomes into bi-modal ima…
Multivalent interactions occur frequently between biological entities.1 When strong binding is not achievable with a single receptor-ligand pair, multivalency, or simultaneous binding between multiple receptors and ligands, becomes an effective strategy to enhance the binding. Significant efforts have been devoted in…
CdTe, CdSe, and CdS nanocrystals have a high capability to drive in situ photochemical regeneration of NADH under visible light (λ > 420 nm). In particular, CdTe nanocrystals exhibit a superior turnover frequency and number for NADH regeneration compared to other inorganic photosensitizers. This work shows that quantu…
We describe a simple method of fabricating a superhydrophobic carbon nanotube (CNT) film without any chemical modification. A remarkable surface wettability transition between superhydrophobicity and superhydrophilicity can be easily observed by the alternation of UV irradiation and dark storage. The adsorption and de…
Although there are several methods for obtaining sub-micro or nanofibers, electrospinning is perhaps the most versatile process. Nanotechnology has been widely accepted as dealing with the science and technology where at least one dimension is of roughly 1 to 100 nm. Electrospinning has been recognized as a feasible t…
The uncontrolled development of nanoscale roughness during plasma exposure of polymer surfaces is a major issue in the field of semiconductor processing. In this paper, we investigated the question of a possible relationship between the formation of nanoscale roughening and the simultaneous introduction of a nanometer…
ZnO nanoparticles with different shapes and sizes were prepared by changing coordinating ligands. Hexagonal cones presented UV and green (∼500 nm) emissions, which originated from excitons and defects, respectively. Oxygen vacancies were found to be major defects in the hexagonal cones. Blue emission at ∼440 nm was ob…
The field dependence of the magnetic entropy change peak at the low temperature surface spin freezing transition in chemically synthesized, monodispersed Co, Co–Ag, and Ni–Ag core-shell nanoparticles is studied, with the aim of gaining insight into the critical exponents of this transition. It is evidenced that althou…
We study the enhanced magnetic moment observed in epitaxial magnetite $({\text{Fe}}_{3}{\text{O}}_{4})$ ultrathin films $(t<15\text{ }\text{nm})$ grown on MgO (001) substrates by means of pulsed laser deposition. The ${\text{Fe}}_{3}{\text{O}}_{4}$ (001) thin films exhibit high crystallinity, low roughness, and sha…
Highly transparent pure alumina with an average grain size of 200 nm was fabricated by means of high‐pressure spark plasma sintering. The alumina sintered either at 950° or at 1000°C for 10 min under an applied pressure of 500 MPa had an in‐line transmission of about 64% for a wavelength of 645 nm. The application of…