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。
Hydroxide-catalyzed exchange rate constants were determined for those amides of FK506-binding protein (FKBP12), ubiquitin, and chymotrypsin inhibitor 2 (CI2) that are solvent-accessible in the high-resolution X-ray structures. When combined with previous hydrogen exchange results for the rubredoxin from Pyrococcus fur…
Surface Enhanced Raman Spectroscopy (SERS) is a sensitive technique that can even detect single molecules. However, in many SERS applications, the strongly inhomogeneous distribution of intense local fields makes it very difficult for a quantitive assessment of the fidelity, or reproducibility of the signal, which lim…
The adsorption of NO 2 on active carbons obtained from Polish bituminous coal was studied. Carbonaceous adsorbents were obtained by pyrolysis of coal at 500, 600, and 700 °C followed by activation with KOH at 700 °C. Adsorption of NO 2 was carried out from dry and moist (70% humidity) air. The surface structure and ch…
Hyperbranched polymers with numerous pendent norbornene functionalities have been synthesized via the radical polymerization of a novel asymmetrical divinyl monomer bearing a higher reactivity methacrylate group and a lower reactivity norbornene group. Mediated by a rapid reversible addition−fragmentation chain transf…
To examine the reversible photoisomerization and subsequent change of asymmetric field, we synthesized optically active 3,3'-disubstituted-1,1'-binaphthyls with an azobenzene moiety. Reflecting the structural change, the specific rotation and circular dichroism underwent significant variations. Under certain condition…
Collagen is the most important structural protein in biology and is responsible for the strength and integrity of tissues such as bone, teeth, cartilage and tendon. Here we report a systematic computational sequencing of the effect of amino acid motif variations on the mechanical properties of single tropocollagen mol…
Here, for the first time, liquid crystals of fluorinated surfactants have been used as templates for the preparation of mesostructured silica. We have focused our study on the hexagonal liquid crystal phase of the C 8 F 17 C 2 H 4 (OC 2 H 4 ) 9 OH/water system. The different synthesis parameters such as pH, surfactant…
Spherical mesoporous CeO 2 −Al 2 O 3 composites containing 2, 5, and 8 wt % ceria have been prepared by an oil-drop sol−gel method. A mixed alumina−ceria hydrosol and hexamethylenetetramine solution were mixed together and added dropwise into a hot oil column where spherical gel particles were formed due to surface te…
Diarylethenes with two different side groups (phenyl and chloro) were appended to both alpha-ends of a sexithiophene unit. The temperature dependent aggregation properties for both compounds were characterized by steady state and transient absorption spectroscopy. The peripheral side groups show an unexpectedly signif…
A series of ferrocene modified hyperbranched polyethers HBPO-Fc with different ferrocene content were obtained by cation ring-opening polymerization followed by esterification. Electrochemical behaviors of HBPO-Fc were investigated by cyclic voltammetry (CV) and the influence of ferrocene content of HBPO-Fc, scan rate…
Abstract Poly(lactic acid) (PLA)/soy protein isolate (SPI) blends with and without modifier were melt compounded in a intensive mixer. Tensile strength of PLA/SPI simple blends decreased more than pure PLA because the dispersed SPI granules acted as the stress concentration; tensile strength was improved by loading of…
Disorder effects strongly influence the transport properties of graphene-based nanodevices even to the point of Anderson localization. Focusing on the local density of states and its distribution function, we analyze the localization properties of actual size graphene nanoribbons. In particular, we determine the time…
Water-free rare earth(III) hexacyanoferrate(III) complexes, {Ln(DMF)(6)(mu-CN)(2)Fe(CN)(4)}(infinity) (DMF = N,N-dimethylformamide; Ln = Sm, 1; Eu, 2; Gd, 3; Tb, 4; Dy, 5; Ho, 6; Er, 7; Tm, 8; Yb, 9; Lu, 10; Y, 11; La, 12; Ce, 13; Pr, 14; Nd, 15), were synthesized in dry DMF through the metathesis reactions of [(18-cr…
We demonstrate the facile fabrication of high aspect ratio nanotubes from responsive block copolymer, polystyrene- block -poly(2-vinylpyridine) (PS- b -P2VP), and in situ grown gold nanoparticles. PS- b -P2VP nanotubes are fabricated by template-assisted assembly by utilizing cylindrical pores of porous alumina membra…
A series of well-defined dendrimer-like star-branched polystyrenes (PS)s has been synthesized by developing a new iterative methodology based on “arm-first” divergent approach. In the methodology, the following three reaction steps are needed for the entire iterative synthetic sequence: (1) a linking reaction of α-3-(…
ADVERTISEMENT RETURN TO ISSUEPREVCommunication to the...Communication to the EditorNEXTSelf-Assembly and One-Dimensional Alignment of a Conducting Polymer Nanofiber in a Nematic Liquid CrystalSadaki Samitsu*†, Yoichi Takanishi, and Jun YamamotoView Author Information Department of Physics, Faculty of Science, Kyoto Un…
We study the elastic and dynamic behavior of a self-avoiding chain confined inside a cylindrical pore using a Flory-type approach and molecular-dynamics simulations. In the Hookean regime, we find that the effective spring constant of the chain is given by keff approximately N(-1)D(-gamma), where N is the number of mo…
Theory of lattice strain in a polycrystalline aggregate under deviatoric stress is extended to include the influence of ongoing plastic deformation. When deviatoric stress is applied to a polycrystalline material at high temperatures (or above the yield stress), applied macroscopic stress is redistributed to individua…
The isolation of individual single-wall carbon nanohorns (SWNHs) from spherical dahlia-shaped aggregates of SWNHs has been successfully achieved for the first time by sucrose density gradient centrifugation. The shapes of the individual SWNHs took straight and two- and three-way branched forms. The lengths of the stra…
High affinity peptide neurotoxins are effective agents for integrating technological advances with biological inquiries. Both chlorotoxin (CTX) and dendrotoxin-1 (DTX-1) are peptide neurotoxins demonstrated to bind targets expressed by glioma cancer cells and are suitable ligands for quantum dot (QD) live cell investi…