Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
Two soluble polymers containing azobenzene chromophore in main chain were successfully synthesized from α-azide, ω-alkyne A−B type azobenzene monomers, 3′-ethynylphenyl[4-hexoxyl(2-azido-2-methylpropionate)phenyl]azobenzene (EHPA) and 3′-ethynylphenyl[4-(4-azidobutoxy)phenyl]azobenzene (EAPA), via thermal 1,3-dipolar…
We present a very efficient and convenient approach to obtain smart biosurfaces by directly replicating biological surface structures. It is realized by a two-step replication process combining regular replica molding and temperature-induced phase separation micromolding (PSmicroM). The negative replicas of biological…
A facile one-pot synthesis to produce micrometer-sized silica particles with low polydispersity was examined in a semibatch process where an ethanol solution of tetraethyl orthosilicate (TEOS) was continuously supplied to another ethanol solution of water and ammonia containing an electrolyte of LiCl, NaCl, or KCl. Su…
Coupling a tightly packed layer of discrete metal nanoparticles to the resonant mode of a photonic crystal surface has been demonstrated as a means for obtaining additional electromagnetic gain for surface-enhanced Raman spectroscopy (SERS), in which electric fields of the photonic crystal can couple to plasmon resona…
The self-assembly of gyroid-forming diblock copolymers confined in cylindrical geometry is studied using a combination of computer simulations and experiments. The simulations, based on a system qualitatively representative of poly(styrene- b -isoprene), are performed with cylindrical nanopores of different diameter (…
The atomic and electronic structure of $h\text{\ensuremath{-}}\text{BN}$ deposited on Ru(001), Rh(111), and Pt(111) is discussed in terms of ab initio density functional theory. Our calculations indicate that the interaction between $h\text{\ensuremath{-}}\text{BN}$ and the metal substrate is relatively weak for the $…
The exciton−dopant energy transfer time in colloidal Mn-doped CdS/ZnS core/shell nanocrystals was investigated via pump−probe transient absorption measurements. The energy transfer time was obtained from the comparative analysis of the dynamics of exciton relaxation in undoped and doped nanocrystal samples with well-d…
Brain-targeted Tempol-loaded poly-(lactide-co-glycolide) (PLGA) nanoparticles (NPs) conjugated with a transferrin antibody (OX 26) were developed using the nanoprecipitation method. These NPs may have utility in treating neurodegenerative diseases such as Parkinson’s disease and Alzheimer’s disease. Central to these d…
Metal-controlled assembly results in a series of lanthanide clusters with the formula of Ln(5)(DBM)(10)(OH)(5) x n(solvent) (DBM = dibenzoylmethanido; Ln = Nd (1), Gd (2), Er (3), and Yb (4); solvent = CH(3)CN or toluene). These pentanuclear clusters with square-pyramidal core structures have been characterized by X-r…
We present calculations of the optical forces between two metal nanospheres forming a hybridized plasmonic dimer. We consider homo- and heterodimers and investigate different plane wave illumination configurations. The forces between the particles are calculated using full Mie theory combined with the Maxwell stress t…
Abstract Dendrimer conjugates for pharmaceutical development are capable of enhancing the local delivery of cytotoxic drugs. The ability to conjugate different targeting ligands to the dendrimer allows for the cytotoxic drug to be focused at the intended target cell while minimizing collateral damage in normal cells.…
An ultrafast microwave annealing process has been developed to reduce the defect density in vertically aligned carbon nanotubes (CNTs). Raman and thermogravimetric analyses have shown a distinct defect reduction in the CNTs annealed in microwave for 3 min. Fibers spun from the as-annealed CNTs, in comparison with thos…
More noble than ever: The first fully inorganic discrete polynuclear gold(III) oxo complex [AuIII4AsV4O20]8− (see structure; Au yellow, As blue, O red) was prepared by condensation of [Au(OH)4]− in the presence of AsO43− ions under mild reaction conditions. The resulting polyoxoaurate exhibits a tetrameric structure w…
In this work we study the optical properties of silver metal nanosphere pairs by means of rigorous electrodynamics calculations based on the generalized multiparticle Mie theory. By correlating the dipole longitudinal plasmon wavelength with its corresponding value of the real part of the dielectric constant, and base…
The perovskite‐like layer structured strontium niobate (Sr 2 Nb 2 O 7 ) and calcium niobate (Ca 2 Nb 2 O 7 ) are good candidates for high‐temperature piezoelectric applications because of their high Curie points. Single‐phase dense Sr 2 Nb 2 O 7 and Ca 2 Nb 2 O 7 ceramics with grain‐oriented microstructures were prepa…
Sn-doped ZnO nanowire films have been successfully synthesized by electrodeposition on zinc foil followed by annealing in air at 400 °C for 4 h. The XRD patterns of the annealed specimens exhibit a set of well-defined diffraction peaks indexed to the wurtzite phase of ZnO. The surface morphology of the as-synthesized…
Mechanically robust power devices of high energy efficiency are one of the keys towards overcoming the challenges from the daunting climate change and the depletion of fossil fuels on the earth. The importance of mechanical engineering has been long recognized in physical type power devices, but less so in those based…
A series of rigid π-conjugated bis(terpyridines) ( M1 − M7 ) bearing electron-acceptor spacer units in 4′-position was synthesized in moderate to high yields by Pd 0 -catalyzed Sonogashira cross-coupling reactions. The compounds were fully characterized by NMR spectroscopy, MALDI−TOF mass spectrometry, elemental analy…
Pd−Au bimetallic model catalysts, synthesized either as thin films on Mo(110) or as nanoparticles on a TiO 2 thin film, were used in CO oxidation at both low (1 × 10 −7 Torr) and elevated (8−16 Torr) CO pressures. Alloying with Au forms isolated Pd sites that are incapable of dissociating O 2 . This inability causes r…
We report on the nanometer scale spectral imaging of surface plasmons within individual silver triangular nanoprisms by electron energy loss spectroscopy and on related discrete dipole approximation simulations. A dependence of the energy and intensity of the three detected modes as function of the edge length is clea…