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Practical photoemission characterization of molecular films and related interfaces

Ján Ivančo2014-06-02arXiv

Even though the term `organic electronics' evokes rather organic devices, a significant part of its scope deals with physical properties of `active elements' such as organic films and interfaces. Examination of the film growth and the evolution of the interface formation are particularly needful for the understanding…

Materials Science

A new asymmetric Pseudo‐Voigt function for more efficient fitting of XPS lines

Martin Schmid、Hans‐Peter Steinrück、J. Michael Gottfried2014-06-02Surface and Interface Analysis

Asymmetric peak profiles for the application in spectroscopy can be obtained in a simple way by substituting the usually constant full width at half maximum parameter in Pseudo‐Voigt functions with an energy‐dependent expression, for instance of sigmoidal shape. While this approach has been successfully applied to vib…

X-ray Spectroscopy and Fluorescence AnalysisElectron and X-Ray Spectroscopy TechniquesX-ray Diffraction in Crystallography

An Electrolyte‐Free Flexible Electrochromic Device Using Electrostatically Strong Graphene Quantum Dot–Viologen Nanocomposites

Eunhee Hwang、Sohyeon Seo、Sora Bak 等 8 位作者2014-06-02Advanced Materials

A strong electrostatic MV(2+) -GQD nanocomposite provides an electrolyte-free flexible electrochromic device wih high durability. The positively charged MV(2+) and negatively charged GQD are strongly stabilized by non-covalent intermolecular forces (e.g., electrostatic interactions, π-π stacking interactions, and cati…

Advanced Sensor and Energy Harvesting MaterialsConducting polymers and applicationsTransition Metal Oxide Nanomaterials

A Superfluorinated Molecular Probe for Highly Sensitive in Vivo 19 F-MRI

Ilaria Tirotta、Alfonso Mastropietro、Chiara Cordiglieri 等 13 位作者2014-06-02Journal of the American Chemical Society

(19)F-MRI offers unique opportunities to image diseases and track cells and therapeutic agents in vivo. Herein we report a superfluorinated molecular probe, herein called PERFECTA, possessing excellent cellular compatibility, and whose spectral properties, relaxation times, and sensitivity are promising for in vivo (1…

Magnetism in coordination complexesLanthanide and Transition Metal ComplexesElectron Spin Resonance Studies

Functionalization of Biomass Carbonaceous Aerogels: Selective Preparation of MnO2@CA Composites for Supercapacitors

Yumei Ren、Qun Xu、Jianmin Zhang 等 8 位作者2014-06-02ACS Applied Materials & Interfaces

Functionalized porous carbon materials with hierarchical structure and developed porosity coming from natural and renewable biomass have been attracting tremendous attention recently. In this work, we present a facile and scalable method to synthesize MnO2 loaded carbonaceous aerogel (MnO2@CA) composites via the hydro…

Electrocatalysts for Energy ConversionSupercapacitor Materials and FabricationAerogels and thermal insulation

High Therapeutic Efficiency of Magnetic Hyperthermia in Xenograft Models Achieved with Moderate Temperature Dosages in the Tumor Area

Susanne Kossatz、Robert Ludwig、Heidi Dähring 等 10 位作者2014-06-02Pharmaceutical Research

PURPOSE: Tumor cells can be effectively inactivated by heating mediated by magnetic nanoparticles. However, optimized nanomaterials to supply thermal stress inside the tumor remain to be identified. The present study investigates the therapeutic effects of magnetic hyperthermia induced by superparamagnetic iron oxide…

Nanoparticle-Based Drug DeliveryUltrasound and Hyperthermia ApplicationsCancer Research and Treatment

Colorimetric Detection of Sulfite in Foods by a TMB–O2–Co3O4 Nanoparticles Detection System

Wenjie Qin、Su Li、Chen Yang 等 6 位作者2014-06-02Journal of Agricultural and Food Chemistry

In this paper, we first discovered that Co3O4 nanoparticles (NPs) possess intrinsic oxidase-like activity and can catalytically oxidize peroxidase substrates, such as 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) diammonium salt (ABTS) and 3,3',5,5'-tetramethylbenzidine (TMB), to form colored products, in the…

Advanced biosensing and bioanalysis techniquesNanocluster Synthesis and ApplicationsAdvanced Nanomaterials in Catalysis

Photoinduced transformations of stiff-stilbene-based discrete metallacycles to metallosupramolecular polymers

Xuzhou Yan、Jiang‐Fei Xu、Timothy R. Cook 等 7 位作者2014-06-02Proceedings of the National Academy of Sciences

Control over structural transformations in supramolecular entities by external stimuli is critical for the development of adaptable and functional soft materials. Herein, we have designed and synthesized a dipyridyl donor containing a central Z-configured stiff-stilbene unit that self-assembles in the presence of two…

Supramolecular Chemistry and ComplexesLuminescence and Fluorescent MaterialsSupramolecular Self-Assembly in Materials

Energy Transfer from Sm3+ to Eu3+ in Red-Emitting Phosphor LaMgAl11O19:Sm3+, Eu3+ for Solar Cells and Near-Ultraviolet White Light-Emitting Diodes

Xin Min、Zhaohui Huang、Minghao Fang 等 6 位作者2014-06-02Inorganic Chemistry

The red-emitting phosphor LaMgAl11O19:Sm(3+), Eu(3+) was prepared by solid-state reaction at 1600 °C for 4 h. The phase formation, luminescence properties, and energy transfer from Sm(3+) to Eu(3+) were studied. With the addition of 5 mol % Sm(3+) as the sensitizer, the excitation wavelength of LaMgAl11O19:Eu(3+) phos…

Luminescence Properties of Advanced MaterialsPerovskite Materials and ApplicationsLuminescence and Fluorescent Materials

Controlled ocular drug delivery with nanomicelles

Ravi Vaishya、Varun Khurana、Sulabh Patel 等 4 位作者2014-06-02Wiley Interdisciplinary Reviews Nanomedicine and Nanobiotechnology

Many vision threatening ocular diseases such as age-related macular degeneration (AMD), diabetic retinopathy, glaucoma, and proliferative vitreoretinopathy may result in blindness. Ocular drug delivery specifically to the intraocular tissues remains a challenging task due to the presence of various physiological barri…

Nanoparticle-Based Drug DeliveryGold and Silver Nanoparticles Synthesis and ApplicationsAdvanced Drug Delivery Systems

Differences in Cationic and Anionic Charge Densities Dictate Zwitterionic Associations and Stimuli Responses

Qing Shao、Luo Mi、Xia Han 等 7 位作者2014-06-02The Journal of Physical Chemistry B

Zwitterionic materials have shown their excellent performance in many biological and chemical applications. Zwitterionic materials possess moieties that own both cationic and anionic groups. The associations among zwitterionic moieties through electrostatic interactions play an important role in properties of zwitteri…

Hydrogels: synthesis, properties, applicationsSurfactants and Colloidal SystemsPolymer Surface Interaction Studies

Boron Diiminate with Aggregation‐Induced Emission and Crystallization‐Induced Emission‐Enhancement Characteristics

Ryousuke Yoshii、Amane Hirose、Kazuo Tanaka 等 4 位作者2014-06-02Chemistry - A European Journal

Organoboron complexes having aggregation- and crystalization-induced emission properties are presented. The series of boron diiminates were synthesized and the emission behaviors of the synthesized compounds were investigated. Finally, it was found that significant enhancement of the emission depended on the crystalli…

Molecular Sensors and Ion DetectionLuminescence and Fluorescent MaterialsOrganoboron and organosilicon chemistry

Electrically and Optically Tunable Plasmonic Guest–Host Liquid Crystals with Long-Range Ordered Nanoparticles

Qingkun Liu、Ye Yuan、Ivan I. Smalyukh2014-06-02Nano Letters

Practical guest-host devices in which dichroic dye molecules follow electrical switching of a liquid crystal host remain elusive for decades despite promising efficient displays and emergent applications such as smart windows. This is mainly because of poor stability, surface precipitation, and limited means for prope…

Liquid Crystal Research AdvancementsPhotonic Crystals and ApplicationsPhotochromic and Fluorescence Chemistry

Zwitterionic Poly(amino acid methacrylate) Brushes

Abdullah M. Alswieleh、Nan Cheng、Irene Cantón 等 13 位作者2014-06-02Journal of the American Chemical Society

A new cysteine-based methacrylic monomer (CysMA) was conveniently synthesized via selective thia-Michael addition of a commercially available methacrylate-acrylate precursor in aqueous solution without recourse to protecting group chemistry. Poly(cysteine methacrylate) (PCysMA) brushes were grown from the surface of s…

Polymer Surface Interaction StudiesForce Microscopy Techniques and ApplicationsNanofabrication and Lithography Techniques

Photothermoelectric and Photoelectric Contributions to Light Detection in Metal–Graphene–Metal Photodetectors

T. J. Echtermeyer、Parinita Nene、Maxim Trushin 等 11 位作者2014-06-02Nano Letters

Graphene's high mobility and Fermi velocity, combined with its constant light absorption in the visible to far-infrared range, make it an ideal material to fabricate high-speed and ultrabroadband photodetectors. However, the precise mechanism of photodetection is still debated. Here, we report wavelength and polarizat…

Graphene research and applicationsPlasmonic and Surface Plasmon ResearchNanowire Synthesis and Applications

Functional characterization and structural modeling of synthetic polyester-degrading hydrolases from Thermomonospora curvata

Ren Wei、Thorsten Oeser、Johannes Then 等 7 位作者2014-06-02AMB Express

Thermomonospora curvata is a thermophilic actinomycete phylogenetically related to Thermobifida fusca that produces extracellular hydrolases capable of degrading synthetic polyesters. Analysis of the genome of T. curvata DSM43183 revealed two genes coding for putative polyester hydrolases Tcur1278 and Tcur0390 sharing…

Enzyme Catalysis and Immobilizationbiodegradable polymer synthesis and propertiesEnzyme Production and Characterization

Super-Reduced Polyoxometalates: Excellent Molecular Cluster Battery Components and Semipermeable Molecular Capacitors

Yoshio Nishimoto、Daisuke Yokogawa、Hirofumi Yoshikawa 等 5 位作者2014-06-02Journal of the American Chemical Society

Theoretical investigations are presented on the molecular and electronic structure changes that occur as α-Keggin-type polyoxometalate (POM(3-)) clusters [PM12O40](3-) (M = Mo, W) are converted toward their super-reduced POM(27-) state during the discharging process in lithium-based molecular cluster batteries. Densit…

Metal-Organic Frameworks: Synthesis and ApplicationsAdvanced Battery Materials and TechnologiesPolyoxometalates: Synthesis and Applications

Wideband radar cross section reduction using two-dimensional phase gradient metasurfaces

Yongfeng Li、Jieqiu Zhang、Shaobo Qu 等 7 位作者2014-06-02Applied Physics Letters

Phase gradient metasurface (PGMs) are artificial surfaces that can provide pre-defined in-plane wave-vectors to manipulate the directions of refracted/reflected waves. In this Letter, we propose to achieve wideband radar cross section (RCS) reduction using two-dimensional (2D) PGMs. A 2D PGM was designed using a squar…

Antenna Design and AnalysisMetamaterials and Metasurfaces ApplicationsAdvanced Antenna and Metasurface Technologies

Electronic structure of the negatively charged silicon-vacancy center in diamond

Lachlan J. Rogers、Kay D. Jahnke、Marcus W. Doherty 等 11 位作者2014-06-02Physical Review B

The negatively charged silicon-vacancy (SiV${}^{\ensuremath{-}}$) center in diamond is a promising single-photon source for quantum communications and information processing. However, the center's implementation in such quantum technologies is hindered by contention surrounding its fundamental properties. Here we pres…

High-pressure geophysics and materialsDiamond and Carbon-based Materials ResearchForce Microscopy Techniques and Applications

Two-Dimensional Molybdenum Tungsten Diselenide Alloys: Photoluminescence, Raman Scattering, and Electrical Transport

Zhang Mei、Juanxia Wu、Yiming Zhu 等 14 位作者2014-06-02ACS Nano

Two-dimensional transition-metal dichalcogenide alloys have attracted intense attention due to their tunable band gaps. In the present work, photoluminescence, Raman scattering, and electrical transport properties of monolayer and few-layer molybdenum tungsten diselenide alloys (Mo1-xWxSe2, 0 ≤ x ≤ 1) are systematical…

Perovskite Materials and Applications2D Materials and ApplicationsMXene and MAX Phase Materials