Materials Literature
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In order to obtain new advanced functional materials capable of recognizing drug molecules, the polybenzofulvene backbone of molecular brush poly-6-MOEG-9-TM-BF3k has been functionalized with a "synthetic dynamic receptor" composed of two 1-adamantylurea moieties linked together by means of a dipropyleneamino bridge a…
Phosphorus, nitrogen and oxygen co-doped carbonaceous materials (PNODC) were facilely prepared by pyrolyzing phosphorus, nitrogen and oxygen-rich phytic acid doped polyanilines. ICP analysis and elemental analysis demonstrate that the maximum phosphorus content of the as-prepared PNODC reaches 6.02 wt% with the total…
A facile and highly efficient strategy for the synthesis of functional polyesters from 10-undecenoic acid, which is abundantly available and derived from ricin oil, has been successfully achieved using 1,1,3,3-tetramethyl guanidine (TMG) as a promoter at room temperature. The experimental results indicate that high mo…
Using time-dependent surface-enhanced Raman scattering (TDSERS), we demonstrate the surface-catalyzed oxidation of 3-hydroxy anthranilic acid (HAA) to its azo derivatives. No external source either in the form of laser excitation or heat was required for the surface-catalyzed reaction, which clearly established that t…
Trehalose glycolipids are found in many bacteria in the suborder Corynebacterineae, but methyl-branched acyltrehaloses are exclusive to virulent species such as the human pathogen Mycobacterium tuberculosis. In M. tuberculosis, the acyltransferase PapA3 catalyzes the formation of diacyltrehalose (DAT), but the enzymes…
In this study, influence of the chemical foaming agent content and talc mineral filler on the microcellular and mechanical properties of pure polypropylene and 20 wt% talc filled polypropylene composite foams was investigated. The chemical foaming agent at 1 wt% and 2 wt% ratios was added to pure polypropylene and tal…
First-principles density functional theory calculations were performed to study the effect of Li adsorption on the structural and electronic properties, particularly the work function, of boron α-sheet. The calculated binding energies indicated that boron α-sheet could be well stabilized by the adsorption of Li atoms.…
Three dimensional hierarchical materials are widespread in nature but are difficult to synthesize by using self-assembly/organization. Here, we employ a gel-liquid interface to obtain centimeter-long ∼100 μm diameter tubes with complex mineral wall structures that grow from the interface into solution. The gel, made f…
Targeted photodynamic therapy is a new promising therapeutic strategy to overcome growing problems in contemporary medicine, such as drug toxicity and drug resistance. A series of erlotinib-zinc(II) phthalocyanine conjugates were designed and synthesized. Compared with unsubstituted zinc(II) phthalocyanine, these conj…
Hybrid sols of poly (vinyl alcohol) (PVA)/Silicon oxide-titanium oxide (SiO2-TiO2) were prepared with tetraethoxylsilane and tetrabutyl titanate as precursor using Sol-Gel method. PVA/SiO2-TiO2 hybrid fibers were prepared by drawing from the hybrid sols using dip-coating method and aging treatment. The spinnability of…
Protein therapeutics have gained attention recently for treatment of a myriad of human diseases due to their high potency and unique mechanisms of action. We present the development of a novel polymeric thermosponge nanoparticle for efficient delivery of labile proteins using a solvent-free polymer thermo-expansion me…
Effects of counterions of side chain amino acid based polyelectrolytes (PEs) on the solubility in aqueous medium, pH responsiveness, thermal properties, and ionic conductivities have been appraised. Deprotection of the tert-butyl carbamate (Boc) group from poly(Boc-l-leucine methacryloyloxyethyl ester) [P(Boc-l-Leu-HE…
An unusual even-numbered bromination of triptycene tristhiadiazole is described, giving selectively dibromo-, tetrabromo-, and hexabromotriptycenes with two bromines each at the same phenyl ring. The new compounds can be used as precursors for extended π-conjugated systems and polymers.
Water adsorption and reaction on an O(a)-covered Au(997) surface were comprehensively investigated by means of thermal desorption spectroscopy, X-ray photoelectron spectroscopy, and ultraviolet photoelectron spectroscopy. Adsorbed water is stabilized by O(a) adatoms on Au(997), and the surface reaction between H 2 O(a…
We have characterized the concentration and time dependences of the attachment of colloidal CdSe quantum dots (QDs) to 16-mercaptohexadanoic acid (MHDA)-functionalized nanocrystalline TiO2 thin films. The amount of QDs and the extent of their agglomeration on MHDA-functionalized TiO2 films were characterized by transm…
We performed point-contact spectroscopy tunneling measurements on single crystal ${\mathrm{BaPb}}_{1\ensuremath{-}x}{\mathrm{Bi}}_{x}{\mathrm{O}}_{3}$ for $0\ensuremath{\le}x\ensuremath{\le}0.28$ at temperatures $T=2--40\text{ }\text{ }\mathrm{K}$ and find a suppression in the density of states at low bias voltages th…
We analyze the influence of quantum critical fluctuations on single-particle excitations at the onset of incommensurate $2{k}_{F}$ charge- or spin-density wave order in two-dimensional metals. The case of a single pair of hot spots at high symmetry positions on the Fermi surface needs to be distinguished from the case…
Model layer-by-layer (LbL) assemblies of poly(allylamine hydrochloride) (PAH) and hyaluronic acid (HA) were fabricated in order to study their wet adhesive behavior. The film characteristics were investigated to understand the inherent structures during the assembly process. Subsequently, the adhesion of these systems…
Correction for 'Towards improved precision in the quantification of surface-enhanced Raman scattering (SERS) enhancement factors: a renewed approach' by Arumugam Sivanesan et al., Analyst, 2015, DOI:10.1039/c4an01778a
A frictionless contact separation treatment in a sharp-interface Eulerian framework is presented to handle the general situation of high-speed impact and separation of materials. The algorithm has been developed for an established Eulerian-based Cartesian grid multimaterial flow code in which the interfaces are tracke…