Plasma fluorination of vertically aligned carbon nanotubes: functionalization and thermal stability

• Claudia Struzzi,
• Mattia Scardamaglia,
• Axel Hemberg,
• Luca Petaccia,
• Jean-François Colomer,
• Rony Snyders and
• Carla Bittencourt

Beilstein J. Nanotechnol. 2015, 6, 2263–2271, doi:10.3762/bjnano.6.232

• achieving fine control of their electronic properties. Carbon nanostructures have been decorated with a large variety of atoms and molecules, using wet chemistry, hydrothermal reactions and plasma process [1][2][3][4][5][6]. Among the most studied, fluorine-based grafting species represent both a valid

• a fine selection of grafted species and tuning of electronic properties. Experimental vCNTs were produced by catalytic chemical vapor deposition (CCVD) at atmospheric pressure. The catalysts were prepared by magnetron sputtering; first, a 30 nm Al2O3 buffer layer was deposited on Si wafers with

• electronic properties with respect to the pristine metallic behavior. Upon heating at 500 °C, the fluorine-related states appear at 11 eV as a low intensity shoulder with respect to the high intensity feature generated by oxygen-related states (black curve). Since the cross section for photoemission from the

Core-level spectra and molecular deformation in adsorption: V-shaped pentacene on Al(001)

• Anu Baby,
• He Lin,
• Gian Paolo Brivio,
• Luca Floreano and
• Guido Fratesi

Beilstein J. Nanotechnol. 2015, 6, 2242–2251, doi:10.3762/bjnano.6.230

• differences between the bond lengths in the two directions reduces. Ground-state electronic properties and charge transfer We now quantify the interactions taking place between the molecule and the metal substrate in terms of charge transfer upon adsorption. The isodensity plots showing the three-dimensional

• spectrum of pentacene/Al(001) with the electronic properties of the system. The calculation of NEXAFS is performed with half a core hole in the carbon 1s orbital. It is convenient to consider first a molecule in the gas phase but retaining the V-shaped geometry as in Figure 3. In particular, let us focus

Kelvin probe force microscopy for local characterisation of active nanoelectronic devices

• Tino Wagner,
• Hannes Beyer,
• Patrick Reissner,
• Philipp Mensch,
• Heike Riel,
• Bernd Gotsmann and
• Andreas Stemmer

Beilstein J. Nanotechnol. 2015, 6, 2193–2206, doi:10.3762/bjnano.6.225

• surface state density and Schottky depletion region in semiconductor nanowires [4][5] or to determine the mean free path in carbon nanotubes [6]. KFM also allows one to determine intrinsic doping of two-dimensional crystals such as graphene [7][8], where surface potential and electronic properties depend

• on an error signal only are unaware of the systems they control. Thus, they need to be retuned as soon as the system bandwidths or gains change considerably, either due to different operator settings or, more importantly during KFM scans, due to local variations of electronic properties and

A single-source precursor route to anisotropic halogen-doped zinc oxide particles as a promising candidate for new transparent conducting oxide materials

• Daniela Lehr,
• Markus R. Wagner,
• Johanna Flock,
• Julian S. Reparaz,
• Clivia M. Sotomayor Torres,
• Alexander Klaiber,
• Thomas Dekorsy and
• Sebastian Polarz

Beilstein J. Nanotechnol. 2015, 6, 2161–2172, doi:10.3762/bjnano.6.222

• molecular scale (Hal = I, Br, Cl). We report about the synthesis of the precursors, their transformation into halogene-containing ZnO materials, and finally structural, optical and electronic properties are investigated using a combination of techniques including FT-Raman, low-T photoluminescence, impedance

• Hal@ZnO materials will be studied. Focusing on Cl@ZnO, important optical and electronic properties will be investigated in detail. Experimental Synthesis All starting compounds were received from Aldrich, were purified and carefully dried prior to use. All reactions were performed under strict

• information about some electronic properties of semiconductor compounds. Absorption spectra were acquired in diffuse reflection mode (Rdiff) and are shown in Figure 4a for ZnO1−xClx samples. It can be seen that chlorine doping leads to a shift of the band gap energy, Egap, to higher energies, and there is a

Light-powered, artificial molecular pumps: a minimalistic approach

• Giulio Ragazzon,
• Massimo Baroncini,
• Serena Silvi,
• Margherita Venturi and
• Alberto Credi

Beilstein J. Nanotechnol. 2015, 6, 2096–2104, doi:10.3762/bjnano.6.214

• significantly different steric and electronic properties [27]. In particular, the threading of the trans-A unit through the crown ether ring is much faster than that of the cis-A unit [28]. The S moiety is chosen so that its hindrance for the passage of the macrocycle falls in between that of the trans-A

Nanostructured superhydrophobic films synthesized by electrodeposition of fluorinated polyindoles

• Gabriela Ramos Chagas,
• Thierry Darmanin and
• Frédéric Guittard

Beilstein J. Nanotechnol. 2015, 6, 2078–2087, doi:10.3762/bjnano.6.212

• advantages such as an easiness to functionalize and opto-electronic properties [16] with the possibility to introduce various dopants (smart materials) [17][18]. Conducting polymers are also exceptional materials for the control of surface nanostructures and wettability. First of all, nanostructures of

High I_on/I_off current ratio graphene field effect transistor: the role of line defect

• Mohammad Hadi Tajarrod and
• Hassan Rasooli Saghai

Beilstein J. Nanotechnol. 2015, 6, 2062–2068, doi:10.3762/bjnano.6.210

• transistor devices [5][6]. The electronic properties of graphene are the result of its particular structure. In order to modify the transport behavior, the physical structure of graphene needs to be changed. Consequently, topological defects such as vacancies, impurities, adatoms and Stone–Wales defects are

Nitrogen-doped graphene films from chemical vapor deposition of pyridine: influence of process parameters on the electrical and optical properties

• Andrea Capasso,
• Theodoros Dikonimos,
• Francesca Sarto,
• Alessio Tamburrano,
• Giovanni De Bellis,
• Maria Sabrina Sarto,
• Giuliana Faggio,
• Angela Malara,
• Giacomo Messina and
• Nicola Lisi

Beilstein J. Nanotechnol. 2015, 6, 2028–2038, doi:10.3762/bjnano.6.206

• ], polymers [20], atoms [21] and molecular functional groups [22]) that alter its electronic properties and can also, in principle, open a bandgap, giving graphene semiconductor properties. In an alternative way, graphene can be doped by substitution, i.e., by inserting heterogeneous atoms into the lattice

Distribution of Pd clusters on ultrathin, epitaxial TiO_x films on Pt₃Ti(111)

• Christian Breinlich,
• Maria Buchholz,
• Marco Moors,
• Tobias Pertram,
• Conrad Becker and
• Klaus Wandelt

Beilstein J. Nanotechnol. 2015, 6, 2007–2014, doi:10.3762/bjnano.6.204

• oxide support structure. Small metal particles on an insulating substrate exhibit different electronic properties than the corresponding bulk metal phase. Moreover, in many cases, the oxide surface not only acts as a support structure but also takes part in the reaction cycle, for example, in oxygen

Electrospray deposition of organic molecules on bulk insulator surfaces

• Antoine Hinaut,
• Rémy Pawlak,
• Ernst Meyer and
• Thilo Glatzel

Beilstein J. Nanotechnol. 2015, 6, 1927–1934, doi:10.3762/bjnano.6.195

• molecules; non-contact AFM; ultra-high vacuum (UHV); Introduction Large complex molecules with tunable electronic properties are building block candidates for functional materials with special electrochemical and photophysical properties, which are of fundamental interest for many applications such as

• surfaces. This leads to the possibility to access molecular electronic properties at the single molecule level with scanning probe microscopy. We first demonstrated that solvent deposition from ESI has a weak influence on the KBr(001) surface. Then a complex molecule based on a triply fused diporphyrin was

Metal hydrides: an innovative and challenging conversion reaction anode for lithium-ion batteries

• Luc Aymard,
• Yassine Oumellal and
• Jean-Pierre Bonnet

Beilstein J. Nanotechnol. 2015, 6, 1821–1839, doi:10.3762/bjnano.6.186

• appears to be a promising opportunity. III Kinetics limitations of hydrides for conversion reactions: example of MgH2 The huge numbers of hydrides reported in the literature exhibit different structures, electronic properties and thermodynamics stabilities. Using the hydrides classification proposed by

A facile method for the preparation of bifunctional Mn:ZnS/ZnS/Fe₃O₄ magnetic and fluorescent nanocrystals

• Houcine Labiadh,
• Tahar Ben Chaabane,
• Romain Sibille,
• Lavinia Balan and
• Raphaël Schneider

Beilstein J. Nanotechnol. 2015, 6, 1743–1751, doi:10.3762/bjnano.6.178

• ; Introduction Semiconductor nanocrystals with a diameter of approximately 1–10 nm, also referred to as quantum dots (QDs), have attracted great attention due to their unique optical and electronic properties, which are not observed in bulk semiconductor materials [1][2][3]. Compared to conventional organic dyes

Atomic scale interface design and characterisation

• Carla Bittencourt,
• Chris Ewels and
• Arkady V. Krasheninnikov

Beilstein J. Nanotechnol. 2015, 6, 1708–1711, doi:10.3762/bjnano.6.174

• Bittencourt, Chris Ewels and Arkady Krasheninnikov, with the reviews covering key areas of advanced synthesis methods, controlled functionalization and post-processing routes, developments in nanoscale characterization tools as well as theoretical modeling of structure and dynamics, and electronic properties

• simulation of nanoparticle shapes. In the past decade, many TEM and catalysis experiments were simulated using this multi-scale approach with remarkable success. First-principle calculations have also provided insight into the electronic properties of low-dimensional materials, for example graphene doping by

Influence of surface chemical properties on the toxicity of engineered zinc oxide nanoparticles to embryonic zebrafish

• Zitao Zhou,
• Jino Son,
• Bryan Harper,
• Zheng Zhou and
• Stacey Harper

Beilstein J. Nanotechnol. 2015, 6, 1568–1579, doi:10.3762/bjnano.6.160

• both ionic and non-ionic forms. Polarizability was selected (PL) as a factor to describe the molecules electronic properties and its ability to change with external fields in biochemical reactions [32]. Polar surface area (PS) represents the area formed by the polar areas of the molecule and has been

Electrical properties and mechanical stability of anchoring groups for single-molecule electronics

• Riccardo Frisenda,
• Simge Tarkuç,
• Elena Galán,
• Mickael L. Perrin,
• Rienk Eelkema,
• Ferdinand C. Grozema and
• Herre S. J. van der Zant

Beilstein J. Nanotechnol. 2015, 6, 1558–1567, doi:10.3762/bjnano.6.159

• ) break junctions. These create and displace atomic-sized electrodes so that reproducibly single-molecule junctions are formed [4][5][6][7]. In the past years it has been shown that the electronic properties of single-molecule junctions depend both on the molecular core and on the interfaces between

• its influence on the mechanical and electronic properties. Chemical structures of the molecules studied in this work. Drawing of the MCBJ setup and schematics of the formation of a molecular junction. (a) Individual breaking traces in presence of the molecules 1–4. The applied bias is 0.1 V and the

Possibilities and limitations of advanced transmission electron microscopy for carbon-based nanomaterials

• Xiaoxing Ke,
• Carla Bittencourt and
• Gustaaf Van Tendeloo

Beilstein J. Nanotechnol. 2015, 6, 1541–1557, doi:10.3762/bjnano.6.158

• paired to form 5–7 pairs or even 5–8 pairs [28][43] as demonstrated in Figure 4a,b. The imaging with AC-TEM confirms the presence of these defects in graphene, and provides evidence for the variations in its electronic properties, mechanical properties and thermal properties [61]. An example is shown in

DNA–melamine hybrid molecules: from self-assembly to nanostructures

• Rina Kumari,
• Shib Shankar Banerjee,
• Anil K. Bhowmick and
• Prolay Das

Beilstein J. Nanotechnol. 2015, 6, 1432–1438, doi:10.3762/bjnano.6.148

• electronics where tunable electronic properties and templated metallization are frequently warranted [22][23][24]. Herein, we report the facile creation of DNA–organic hybrid molecules and demonstrate their self-assembly to create nanostructures. The organic molecule used here is melamine, a nitrogen-rich

• rigidity and increased dynamic character, such structures can offer tunable electronic properties [30][48][49]. 30% denaturing PAGE analysis of the reaction mixture of ssDNA and melamine. First-order derivatives of UV absorbance melting profiles at 260 nm for a control (R1–R2) and DNA–melamine hybrid self

Enhanced fullerene–Au(111) coupling in (2√3 × 2√3)R30° superstructures with intermolecular interactions

• Michael Paßens,
• Rainer Waser and
• Silvia Karthäuser

Beilstein J. Nanotechnol. 2015, 6, 1421–1431, doi:10.3762/bjnano.6.147

• extensively studied self-assembled systems due to their rich structural and electronic properties [1]. A considerable interest in C60 films arises from their use in photovoltaic cells [2][3] and potential applications in molecular electronics [4]. Likewise, C60 molecules can be used as chemical anchoring

Nano-contact microscopy of supracrystals

• Adam Sweetman,
• Nicolas Goubet,
• Ioannis Lekkas,
• Marie Paule Pileni and
• Philip Moriarty

Beilstein J. Nanotechnol. 2015, 6, 1229–1236, doi:10.3762/bjnano.6.126

• polyhedral supracrystals arising from precipitation in the colloidal suspension. There is a significant body of work that focuses on elucidating the electronic properties of nanocrystals and their associated 1D, 2D, and 3D assemblies. Building on the conceptual and theoretical framework put forward by

Electronic interaction in composites of a conjugated polymer and carbon nanotubes: first-principles calculation and photophysical approaches

• Florian Massuyeau,
• Jany Wéry,
• Jean-Luc Duvail,
• Serge Lefrant,
• Abu Yaya,
• Chris Ewels and
• Eric Faulques

Beilstein J. Nanotechnol. 2015, 6, 1138–1144, doi:10.3762/bjnano.6.115

• across the composite material. Our SWNTs batches are not sorted and contain both metallic and semiconducting (SC) nanotubes, as usual in most of the studies reporting about SWNT/polymer composites. These two kinds of SWNT species exhibit different electronic properties since SC nanotubes present a

Charge carrier mobility and electronic properties of Al(Op)₃: impact of excimer formation

• Andrea Magri,
• Pascal Friederich,
• Bernhard Schäfer,
• Valeria Fattori,
• Xiangnan Sun,
• Timo Strunk,
• Velimir Meded,
• Luis E. Hueso,
• Wolfgang Wenzel and
• Mario Ruben

Beilstein J. Nanotechnol. 2015, 6, 1107–1115, doi:10.3762/bjnano.6.112

• Fotoreattivitá, Consiglio Nazionale della Ricerca, I-40129 Bologna, Italy CIC nanoGUNE Consolider, E-20018 Donostia – San Sebastian, Spain Nanomatch, Hermann-von-Helmholtz-Platz 1, D-76344 Eggenstein-Leopoldshafen, Germany 10.3762/bjnano.6.112 Abstract We have studied the electronic properties and the charge

• demonstrated that the Co/Al(Op)3 and the Co/Alq3 interfaces have different electronic properties. In more detail, two hybrid interface states, which have energies (E−EF) of −0.9 and −1.6 eV were detected in the Co/Al(Op)3 interface, whereas in the Co/Alq3, a single hybrid interface state at −0.8 was measured

• . In this work, the potential of the chemical tailoring of the aluminum complexes’ ligands was successfully demonstrated along with the resulting effects on the electronic properties of the hybrid interfaces. To our knowledge, this is surprisingly the first time that the electronic properties of Al(Op

Fulleropeptide esters as potential self-assembled antioxidants

• Mira S. Bjelaković,
• Tatjana J. Kop,
• Jelena Đorđević and
• Dragana R. Milić

Beilstein J. Nanotechnol. 2015, 6, 1065–1071, doi:10.3762/bjnano.6.107

• the electrochemical, in vitro antioxidant and morphological investigations of compounds 1–12. Results and Discussion Cyclic voltammetry (CV) of fullerene derivatives plays a relevant role in the characterization of their electronic properties and potential applications [28]. The electrochemical

Effects of swift heavy ion irradiation on structural, optical and photocatalytic properties of ZnO–CuO nanocomposites prepared by carbothermal evaporation method

• Sini Kuriakose,
• D. K. Avasthi and
• Satyabrata Mohapatra

Beilstein J. Nanotechnol. 2015, 6, 928–937, doi:10.3762/bjnano.6.96

• -heterojunctions leading to a modification of optical and electronic properties, which finds promising applications in photocatalysis [30], sensors [31] and solar cells [32]. Several methods have been used to modify the optical, electrical and structural properties of nanostructured materials and nanocomposite

Pt- and Pd-decorated MWCNTs for vapour and gas detection at room temperature

• Hamdi Baccar,
• Atef Thamri,
• Pierrick Clément,
• Eduard Llobet and
• Adnane Abdelghani

Beilstein J. Nanotechnol. 2015, 6, 919–927, doi:10.3762/bjnano.6.95

• . Therefore, this may lead to a more defective surface for Pd-decorated MWCNTs and result in a degradation of the electronic properties of nanotubes. The calibration curves for non-aromatic vapours are shown in Figure 5. According to the results shown in Figure 5, the response of Pd- and Pt-decorated sensors

A versatile strategy towards non-covalent functionalization of graphene by surface-confined supramolecular self-assembly of Janus tectons

• Ping Du,
• David Bléger,
• Fabrice Charra,
• Vincent Bouchiat,
• David Kreher,
• Fabrice Mathevet and
• André-Jean Attias

Beilstein J. Nanotechnol. 2015, 6, 632–639, doi:10.3762/bjnano.6.64

• tecton; liquid–solid interface; scanning tunnelling microscopy; supramolecular self-assembly; Review Introduction Graphene is of significant interest for next generation electronics [1] particularly due to its electronic properties [2][3]. Thus, many research programs have been focused on the

• [6]. In the former strategy, the covalent chemistry of pristine graphene requires chemical modification and the transformation of sp2 hybridized carbon atoms into sp3 hybridized. As a consequence, this disruption of the C-sp2 leads to the alteration of the characteristic electronic properties of