Materials Literature
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A series of novel hyperbranched polyselenides and polytellurides with multiple catalytic sites at the branching units has been synthesized via the polycondensation of A2 + B3 monomers. The GPx-like activities of these polymer mimics were assessed and it was found that the polytellurides showed higher GPx-like activiti…
We report the design and development of a new class of alkoxyphenacyl based photodegradable polycarbonates. These polymers incorporate the photoactive moiety in the backbone and, when irradiated at 300 nm, undergo controlled chain scission. Micropatterned thin films of these polymers were fabricated by photolithograph…
This paper reports the effect of precursor concentration, growth temperature, and growth time on the size and density of ZnO nanowire arrays (ZNAs). The well-aligned ZNAs were grown on indium tin oxide substrate using a facile chemical bath deposition method. The results showed that the ZnO nanowires could be tailored…
After preparing catechol or biphenyl derivatives possessing two 2,3-difluoro-1,4-diphenylbenzene units, we investigated the phase transition behaviour of their mixture with a chiral additive with a high twisting power. Their transition behaviour was dependent on the methylene number in the spacer. Both derivatives pos…
Abstract In this article, magnetite nanoparticles (MNPs) coated with glycopolymer bearing glucose moieties were designed with optimal structural, colloidal, and magnetic properties for biomedical applications. MNPs with an average size of 17 ± 2 nm were synthesized by thermal decomposition process and then their surfa…
Dimers of metal nanospheres are well-known for their characteristic anisotropic optical response. Here, we demonstrate in single-particle SERS experiments that individual gold trimers and 3D superstructures exhibit a polarization-independent SERS response. This optical behavior of single particle clusters provides con…
Exposure to controlled doses (~4.65 × 10(-3) to 2.79 × 10(-2) nC/μm(2) ion fluence) of Ga ions via a focused ion beam (FIB) deoxygenates graphene oxide (GO) and increases the electrical conductivity in 100 × 100 μm(2) patches by several orders of magnitude compared to that in unexposed GO. Raman spectra and the carbon…
We propose an innovative active imaging device named gain-assisted hybrid-superlens hyperlens and examine its resolving power theoretically. This semi-cylindrical device consists of a core of semi-cylindrical super-lens and a half cylindrical outer shell of hyperlens. Both the superlens and hyperlens parts of the devi…
Abstract Novel biomimetic hyperbranched copolymers that synthesized by polymerization of zwitterionic monomer (CBB) on the surface of a hyperbranched poly(3‐ethyl‐3‐(hydroxymethyl)oxetane) (HBPO) core and used as a drug delivery carrier have been investigated by analysis of protein‐adsorption‐resistance, cytotoxicity…
Poly(vinyl alcohol) (PVA)/α-zirconium phosphate (ZrP) polymer nanocomposite (PNC) fibers were successfully prepared by a simple and low-cost electrospinning process. ZrP nanoparticles with two different dimensions, that is, ZrP-500 with a lateral dimension of ∼320 nm and an aspect ratio of ∼500 and ZrP-1500 with a lat…
Abstract In this work, the preparation of poly(lactic acid) (PLA)‐based degradable nanoparticles (NPs) with tunable hydrophobicity and degradation kinetics via starved emulsion free‐radical polymerization is studied. The synthesis of macromonomers, constituted of a tunable number of lactic acid units functionalized wi…
Abstract In this paper, bead-on-string microstructures are fabricated by the mechano-electrospinning (MES) process in a continuously tunable manner. The thin jet is pulled onto the substrate by the stable electric field force and tunable mechanical drawing force, and then the bead-on-string structures are generated by…
The ferroelectric Sillen–Aurivillius phase Bi 5 PbTi 3 O 14 Cl, a layered structure containing three-layer perovskite-type blocks, has been modified by substituting magnetic transition metal cations M 3+ = Cr 3+, Mn 3+, or Fe 3+ for 1 / 3 of the Ti 4+ cations, accompanied by co-doping of Bi 3+ for Pb 2+ . The aim of t…
Symmetries play a crucial role in the theoretical analysis and visualization of the five macroscopic grain boundary parameters, including the misorientation (three parameters) and the orientation of the boundary-plane (two parameters). The symmetry aspects of the misorientation spaces are very well documented and in t…
In this paper, we propose a new route to super-thin electromagnetic cloaks based on microwave networks. The cloak is composed of microstrip-connected metallic patches wrapping the cloaked object. Under illumination, EM waves are coupled into the cloaking layer, transferred around the cloaked object and finally retrans…
We present a theoretical model for predicting equilibrium wetting configurations of two-dimensional droplets on periodically grooved hydrophobic surfaces. The main advantage of our model is that it accounts for pinning/depinning of the contact line at step edges, a feature that is not captured by the Cassie and Wenzel…
The thermodynamic behavior of chitosan in acidic aqueous solutions with ionic strengths between 0.04 × 10 –2 and 24.30 × 10 –2 M was investigated at 25 °C. The intrinsic viscosity and other thermodynamic parameters of chitosan with the molecular weight and the degree of acetylation of 7.14 × 10 5 g mol –1 and 26%, res…
Abstract Wireless‐manipulated graphite coated nanomagnets are promising candidates for minimally invasive targeted drug delivery platforms. Iron nanowires coated with graphitic shells are synthesized by template‐assisted deposition. The use of porous aluminum oxide templates enables both the batch production of nanowi…
To alleviate side reactions identified in an N-propargyl-rhodamine lactam sensing system, we devised the novel reaction-based sensing scheme for gold species based on the alkynophilicity. A fluorescein (2-ethynyl)benzoate underwent Au(III)-promoted ester hydrolysis selectively over other metal ions with high sensitivi…
A theoretical study of the H(2)O-Au(1 1 1) interface based on first principles density functional theory (DFT) calculations with and without inclusion of dispersion correction is reported. Three different computational approaches are considered. First, the standard generalized gradient approximation (GGA) functional P…