Formation of ferromagnetic molecular thin films from blends by annealing

• Peter Robaschik,
• Ye Ma,
• Salahud Din and
• Sandrine Heutz

Beilstein J. Nanotechnol. 2017, 8, 1469–1475, doi:10.3762/bjnano.8.146

• the β-MnPc films generated from the blended film. To further investigate the phase transformation we have conducted FTIR spectroscopy measurements (Figure 3b) on the same films deposited on KBr substrates. The ν(C≡N) stretching peaks of TCNQ for the as-deposited blended film can be found at 2185 and

• for the same films deposited on KBr substrates. The green frame highlights the range of 2050–2300 cm−1 where the ν(C≡N) stretching peaks for TCNQ appear. The pink frames show the area of the MnPc isoindole vibrations around 1225–1475 cm−1 and the γ(C-H) out-of-plane deformation of the MnPc ligand at

Deposition of exchange-coupled dinickel complexes on gold substrates utilizing ambidentate mercapto-carboxylato ligands

• Martin Börner,
• Laura Blömer,
• Marcus Kischel,
• Peter Richter,
• Georgeta Salvan,
• Dietrich R. T. Zahn,
• Pablo F. Siles,
• Maria E. N. Fuentes,
• Carlos C. B. Bufon,
• Daniel Grimm,
• Oliver G. Schmidt,
• Daniel Breite,
• Bernd Abel and
• Berthold Kersting

Beilstein J. Nanotechnol. 2017, 8, 1375–1387, doi:10.3762/bjnano.8.139

• according to the published procedure [43]. All other compounds were purchased from commercial sources unless otherwise specified. The solvents were distilled prior to use and were deaerated according to standard procedures [66]. The IR spectra were recorded as KBr disks using a Bruker Tensor 27 FTIR

• ]+; IR (KBr pellet) : 2985 (m), 2850 (m), 2671 (m), 2550 (m, ν(SH)), 1684 (s, ν(RCO2)), 1607(s, ν(RCO2)), 1575 (m), 1521 (w), 1483 (m), 1425 (s), 1396 (m), 1297 (s), 1283 (s), 1199 (w), 1179 (w), 1130 (w), 1106 (m), 1017 (w), 1004 (w), 942 (w), 865 (w), 824 (s), 771 (s), 753 (w), 697 (w), 679 (w), 556 (w

• microcrystalline solid, which was washed with EtOH and ether and dried in vacuum. Yield: 191.1 mg (0.186 mmol, 56%). ESI+-MS (MeCN) m/z: 932.39 [M+]; IR (KBr pellet) : 2962 (s), 2902 (s), 2868 (s), 2808 (m), 2547 (w, ν(SH)), 1717 (w), 1596 (s, νas(RCO2)), 1565 (m), 1546 (w), 1461 (s), 1407 (s, νs(RCO2)), 1363 (m

Synthesis, spectroscopic characterization and thermogravimetric analysis of two series of substituted (metallo)tetraphenylporphyrins

• Rasha K. Al-Shewiki,
• Carola Mende,
• Roy Buschbeck,
• Pablo F. Siles,
• Oliver G. Schmidt,
• Tobias Rüffer and
• Heinrich Lang

Beilstein J. Nanotechnol. 2017, 8, 1191–1204, doi:10.3762/bjnano.8.121

• by an isotopic peak distance of m/z = 0.5. This is a common occurrence in ESI measurements when a higher concentration of the analyte is present [23]. IR studies Severe difficulties were noticed when measuring KBr pellets of 2/3 and 2a–d/3a–d, as described by Alben [25]. These difficiculties are due

• to, for example, the optical inhomogeneity of the pellets. In order to avoid them, and as suggested by Alben [25], all (metallo)poprhyrins were intensively grinded to a fine flour before further grinding with KBr was done. It must be emphasized that due to the recommended intense and thus time

• -consuming grinding of the pure (polycrystalline) materials the IR spectra reveal the presence of water, likely due to the hygroscopic nature of the compounds and/or of KBr. In Figure 2 (2, 2a–d) and Figure 3 (3, 3a–d) the spectral region between 500 and 1800 cm−1 is displayed. Shaded areas within individual

Fully scalable one-pot method for the production of phosphonic graphene derivatives

• Kamila Żelechowska,
• Marta Prześniak-Welenc,
• Marcin Łapiński,
• Izabela Kondratowicz and
• Tadeusz Miruszewski

Beilstein J. Nanotechnol. 2017, 8, 1094–1103, doi:10.3762/bjnano.8.111

• derivative with polar multiprotic phosphonate groups can find its place in, for example, conducting composites, ion exchangers and proton carriers. Experimental Chemicals PCl3 was purchased from POCh (Gliwice, Poland). Spectral grade KBr was purchased from Sigma-Aldrich. Deionized water was used in the

• experiments. Apparatus During the experiments a magnetic stirrer Heidolph MR hei-standard with hot plate was used and the centrifugation for all samples was done using a Chemland model P3032 centrifuge at a speed 15000 rpm for 10 min. The FTIR spectra were recorded using the KBr pellet method on a Perkin

Triptycene-terminated thiolate and selenolate monolayers on Au(111)

• Jinxuan Liu,
• Martin Kind,
• Björn Schüpbach,
• Daniel Käfer,
• Stefanie Winkler,
• Wenhua Zhang,
• Andreas Terfort and
• Christof Wöll

Beilstein J. Nanotechnol. 2017, 8, 892–905, doi:10.3762/bjnano.8.91

• with acetyl chloride to yield the selenoacetate Trp1SeAc. IR Spectroscopy In Figure 2, IRRA spectra recorded from Trp0S-, Trp0Se-, Trp1S- and Trp1Se- layers on gold substrates (upper panel) as well as IR spectra from KBr pellets (middle panel) and calculated spectra of the corresponding molecules

• corresponding KBr pellet spectra, in particular in the region below 1500 cm−1. The IRRA spectra of the molecular layers feature a lot of the bands that can be found in the calculated and in the KBr pellet spectra, indicating the presence of the triptycene-based target molecules on the gold surface. The bands 7

• rinsed with ethanol and dried in a stream of N2. Infrared spectroscopy Spectra of KBr pellets containing the triptycene-based compounds were recorded at room temperature using a dry-air purged BioRad Excalibur FTS-3000 Fourier-transform infrared spectrometer equipped with a deuterated triglycine sulfate

Probing the magnetic superexchange couplings between terminal Cu^II ions in heterotrinuclear bis(oxamidato) type complexes

• Mohammad A. Abdulmalic,
• Saddam Weheabby,
• Francois E. Meva,
• Azar Aliabadi,
• Vladislav Kataev,
• Bernd Büchner,
• Frederik Schleife,
• Berthold Kersting and
• Tobias Rüffer

Beilstein J. Nanotechnol. 2017, 8, 789–800, doi:10.3762/bjnano.8.82

• SiMe4 with the solvent as the reference signal ([D6]-DMSO: 1H NMR, δ = 2.54; and 13C{1H}NMR, δ = 40.45). FTIR spectra were recorded in the range of 400–4000 cm−1 on a Perkin-Elmer Spectrum 1000 FTIR spectrophotometer as KBr pellets. Elemental analysis for C, H and N were performed on a Thermo FlashAE

First examples of organosilica-based ionogels: synthesis and electrochemical behavior

• Andreas Taubert,
• Ruben Löbbicke,
• Barbara Kirchner and
• Fabrice Leroux

Beilstein J. Nanotechnol. 2017, 8, 736–751, doi:10.3762/bjnano.8.77

• was removed from the ionogel as the vacuum had reached a constant value. Ionogel nomenclature. IGs are denoted TBMxxIL, TBAxxIL, MBMxxIL, and MBAxxIL, respectively. For details of organosilica nomenclature see above. Spectroscopy. Infrared (IR) spectra were recorded using the KBr pellet method or the

Nanostructured carbon materials decorated with organophosphorus moieties: synthesis and application

• Giacomo Biagiotti,
• Vittoria Langè,
• Cristina Ligi,
• Stefano Caporali,
• Maurizio Muniz-Miranda,
• Anna Flis,
• K. Michał Pietrusiewicz,
• Giacomo Ghini,
• Alberto Brandi and
• Stefano Cicchi

Beilstein J. Nanotechnol. 2017, 8, 485–493, doi:10.3762/bjnano.8.52

• 15 mg of a black powder. ICP-AES analysis: phosphorus 1.255%, 0.41 mmol/g. FTIR (KBr): 3328, 1724, 1579, 1384, 1154 and 1116 cm−1. Synthesis of GPs-Tour-PO (7) To a 5 mL flask were added GPs 11.6 mg (0.95 mmol), (4-aminophenyl)diphenylphosphine oxide (1, 54.3 mg, 0.185 mmol) and 2.5 mL of anhydrous

• PTFE membrane and thoroughly washed with a solution of diisopropyl ether and isopropanol 1:1. The product was recovered and dried to afford 13.3 mg of a black powder. Elemental analysis C, 76.07; H, 1.12; N, 0.82%. ICP-AES phosphorus 1.807%, 0.583 mmol/g. FTIR (KBr): 3312, 1718, 1559, 1164 and 1114 cm

• at 1400 rcf), with a solution of diisopropyl ether and isopropanol 1:1. The product was recovered and dried to afford 13.1 mg. Elemental analysis C, 90.36%; H, 0.58; N, 0.42%. ICP-AES 0.61% of phosphorous. FTIR (KBr): 1195 and 1181 cm−1 P=O stretching. Synthesis ox-MWCNTs-N3 (11) To a 10 mL flask

Fiber optic sensors based on hybrid phenyl-silica xerogel films to detect n-hexane: determination of the isosteric enthalpy of adsorption

• Jesús C. Echeverría,
• Ignacio Calleja,
• Paula Moriones and
• Julián J. Garrido

Beilstein J. Nanotechnol. 2017, 8, 475–484, doi:10.3762/bjnano.8.51

• were recorded with a resolution of 4 cm−1. The KBr pressed-disk technique was used at two sample concentrations: 0.6 mg was dispersed in 199.4 mg of KBr to observe the details of the recorded spectra in the 2200–400 cm−1 region, and 2.0 mg was dispersed in 198 mg of KBr to analyze the 4000–2200 cm−1

Tailoring bifunctional hybrid organic–inorganic nanoadsorbents by the choice of functional layer composition probed by adsorption of Cu²⁺ ions

• Veronika V. Tomina,
• Inna V. Melnyk,
• Yuriy L. Zub,
• Aivaras Kareiva,
• Miroslava Vaclavikova,
• Gulaim A. Seisenbaeva and
• Vadim G. Kessler

Beilstein J. Nanotechnol. 2017, 8, 334–347, doi:10.3762/bjnano.8.36

• heating rate of 10 °C·min−1. DRIFT spectra were recorded on a Thermo Nicolet Nexus Fourier-transform infrared spectrometer in the range of 400–4000 cm−1, working in "Nexus Smart Collector" mode and averaging 50 scans with a resolution of 8 cm−1. The samples were previously ground with solid KBr (Spectral

Nanoscale isoindigo-carriers: self-assembly and tunable properties

• Tatiana N. Pashirova,
• Andrei V. Bogdanov,
• Lenar I. Musin,
• Julia K. Voronina,
• Irek R. Nizameev,
• Marsil K. Kadirov,
• Vladimir F. Mironov,
• Lucia Ya. Zakharova,
• Shamil K. Latypov and
• Oleg G. Sinyashin

Beilstein J. Nanotechnol. 2017, 8, 313–324, doi:10.3762/bjnano.8.34

• (50 mL) and air-dried, affording 3 as dark-red crystalline powder. Yield: 97% (3.8 g), mp 135–137 °С; IR (KBr): 3419, 2915, 2848, 1698, 1662, 1619, 1464, 1364, 1334, 1102, 745 cm−1; 1H NMR (500 MHz, CDCl3/DMSO-d6 (9:1)) δH 0.74 (t, J = 7.0 Hz, 3H, CH3), 1.30–1.05 (m, 26H, 13CH2), 1.57 (q, J = 7.3 Hz

Photocatalysis applications of some hybrid polymeric composites incorporating TiO₂ nanoparticles and their combinations with SiO₂/Fe₂O₃

• Andreea Laura Chibac,
• Tinca Buruiana,
• Violeta Melinte and
• Emil C. Buruiana

Beilstein J. Nanotechnol. 2017, 8, 272–286, doi:10.3762/bjnano.8.30

• , 4H, CH2-NH-COO); 1.88 (s, 6H, CH3 linked to double bond); 1.78 (m, 110H, CH2-CH2-CH2-CH2 from PTHF); FTIR (KBr, cm−1): 3336 (NH), 2796–2941 (C–H), 1722 (C=O), 1638 (CH2=C), 1535 (amide II); 1246, 1113 (C–O–C), 815 (CH2=C). Preparation of hybrid composites The hybrid composites were obtained through

Nanocrystalline ZrO₂ and Pt-doped ZrO₂ catalysts for low-temperature CO oxidation

• Amit Singhania and
• Shipra Mital Gupta

Beilstein J. Nanotechnol. 2017, 8, 264–271, doi:10.3762/bjnano.8.29

• spectrometer using KBr pellets in the range 500–4000 cm−1. Catalytic activity The CO oxidation reaction was performed in a quartz reactor (inner diameter of 14 mm) under atmospheric pressure. 0.5 g of catalyst was inserted into the quartz tube. The reaction was carried out at different temperatures. For

Performance of colloidal CdS sensitized solar cells with ZnO nanorods/nanoparticles

• Anurag Roy,
• Partha Pratim Das,
• Mukta Tathavadekar,
• Sumita Das and
• Parukuttyamma Sujatha Devi

Beilstein J. Nanotechnol. 2017, 8, 210–221, doi:10.3762/bjnano.8.23

• (FTIR grade ≥99% trace metal basis, Sigma-Aldrich). The as-received KBr was oven-dried overnight at ≈100 °C and then stored in a desiccator prior to use. Furthermore, the Raman spectrum was collected using a 514.5 nm Ar+ green laser excitation source with 50 mW power on a STR500, Cornes Technologies

From iron coordination compounds to metal oxide nanoparticles

• Mihail Iacob,
• Carmen Racles,
• Codrin Tugui,
• George Stiubianu,
• Adrian Bele,
• Liviu Sacarescu,
• Daniel Timpu and
• Maria Cazacu

Beilstein J. Nanotechnol. 2016, 7, 2074–2087, doi:10.3762/bjnano.7.198

• ] using FeCl3∙6H2O and FeCl2·4H2O at a molar ratio of 1:2, calcium acetate ((CH3COO)2Ca) and glacial acetic acid. The identity of the compound obtained was confirmed by FTIR (KBr) ν: 3421 (s), 1586 (vs), 1420 (vs), 1349 (m), 1050 (w), 1033 (w), 715 (m), 663 (s), 618 (m), 468 (w), 561 (w); Anal. calcd for

• [34] by using Fe(NO3)3∙9H2O and CH3COONa, glacial acetic acid and distilled water. The structure of the compound was confirmed by FTIR and single crystal XRD (lattice parameters). FTIR (KBr) ν: 420 (vw), 468 (vw), 527 (w), 613 (s), 662 (s), 822 (w), 835 (w), 898 (vw), 951 (w), 1035 (m), 1292 (s), 1385

• of the compound was confirmed by FTIR and single crystal XRD (lattice parameters). FTIR (KBr) ν: 3435 (s), 3154 (s), 1591 (vs), 1564 (s), 1510 (vs), 1437 (vs), 1385 (vs), 1369 (vs), 1219 (s), 1155 (s), 1080 (m), 1007 (m), 972 (s), 874 (s), 845 (w), 826 (w), 781 (s), 743 (m), 638 (s), 602 (s), 515 (s

Organoclay hybrid materials as precursors of porous ZnO/silica-clay heterostructures for photocatalytic applications

• Marwa Akkari,
• Pilar Aranda,
• Abdessalem Ben Haj Amara and
• Eduardo Ruiz-Hitzky

Beilstein J. Nanotechnol. 2016, 7, 1971–1982, doi:10.3762/bjnano.7.188

• spectrophotometer. The samples were prepared as pellets in KBr, in the case of smectite-based materials, or as pure products, in the case of sepiolite-based materials, and the spectra were recorded in the 4000–250 cm−1 wavenumber range with 2 cm−1 resolution. Transmission electron microscopy (TEM) images were taken

Controlled supramolecular structure of guanosine monophosphate in the interlayer space of layered double hydroxide

• Gyeong-Hyeon Gwak,
• Istvan Kocsis,
• Yves-Marie Legrand,
• Mihail Barboiu and
• Jae-Min Oh

Beilstein J. Nanotechnol. 2016, 7, 1928–1935, doi:10.3762/bjnano.7.184

• transform-infrared spectra (FTIR, PerkinElmer, Spectrum One) with conventional KBr pellet method was carried out. The morphology of GL hybrids was observed by scanning electron microscopic (SEM) images obtained with an FEI QUANTA 250 FEG. For quantitative analysis, a thermogravimetric analyzer (TGA, SINCO

Chitosan-based nanoparticles for improved anticancer efficacy and bioavailability of mifepristone

• Huijuan Zhang,
• Fuqiang Wu,
• Yazhen Li,
• Xiping Yang,
• Jiamei Huang,
• Tingting Lv,
• Yingying Zhang,
• Jianzhong Chen,
• Haijun Chen,
• Yu Gao,
• Guannan Liu and
• Lee Jia

Beilstein J. Nanotechnol. 2016, 7, 1861–1870, doi:10.3762/bjnano.7.178

• similarly without adding MIF. Characterization Infrared spectra were analyzed using a FTIR spectrometer (Intelligent, Nicolet 360, USA) with KBr pellet. The samples were scanned from 500–4000 cm−1 (scan step of 4 cm−1). X-ray powder diffraction patterns of MCNs were obtained by an XRD diffractometer

3D printing of mineral–polymer bone substitutes based on sodium alginate and calcium phosphate

• Aleksey A. Egorov,
• Alexander Yu. Fedotov,
• Anton V. Mironov,
• Vladimir S. Komlev,
• Vladimir K. Popov and
• Yury V. Zobkov

Beilstein J. Nanotechnol. 2016, 7, 1794–1799, doi:10.3762/bjnano.7.172

• KBr powder followed by compacting into a thin pellet in a stainless steel die with a 1 cm inner diameter. FTIR data were recorded over the range of 4000–400 cm−1 with 128 scans. As described in [17] the compressive strength of the samples was evaluated in accordance with the ISO standard 83.100

Effective intercalation of zein into Na-montmorillonite: role of the protein components and use of the developed biointerfaces

• Ana C. S. Alcântara,
• Margarita Darder,
• Pilar Aranda and
• Eduardo Ruiz-Hitzky

Beilstein J. Nanotechnol. 2016, 7, 1772–1782, doi:10.3762/bjnano.7.170

• 80 °C until complete homogenization of the components. Characterization Fourier transform infrared (FTIR) spectra of samples in film form or diluted in KBr as pellets were recorded from 4000 to 250 cm−1 (2 cm−1 resolution) with a FTIR spectrophotometer BRUKER IFS 66v/S. CHNS elemental chemical

Preparation of alginate–chitosan–cyclodextrin micro- and nanoparticles loaded with anti-tuberculosis compounds

• Albert Ivancic,
• Fliur Macaev,
• Fatma Aksakal,
• Veaceslav Boldescu,
• Serghei Pogrebnoi and
• Gheorghe Duca

Beilstein J. Nanotechnol. 2016, 7, 1208–1218, doi:10.3762/bjnano.7.112

• a VEGA TESCAN TS 5130 MM scanning electron microscope (SEM). FTIR spectra of the systems and of the individual compounds were obtained from KBr pellets and collected with a PerkinElmer spectrometer „Spectrum 100 FT-IR” in the spectral range of 4000 to 650 cm−1 with a resolution of 1 cm−1. Molecular

Phenalenyl-based mononuclear dysprosium complexes

• Yanhua Lan,
• Andrea Magri,
• Olaf Fuhr and
• Mario Ruben

Beilstein J. Nanotechnol. 2016, 7, 995–1009, doi:10.3762/bjnano.7.92

• the concept that we discussed in our introduction. Experimental Instrumentation Elemental analysis of carbon and hydrogen, were carried out in a Vario Micro Cube. Infrared spectra were recorded using KBr pressed pellets with a Perkin-Elmer Spectrum GX FTIR spectrometer (MAGNA FTIR 750, Nicolet) in the

• ) based on Dy: 20.8 mg, 13%. Elemental analysis (%) calculated (C41H28ClDyO7, 830.58 g/mol): Anal. calcd for C41H28ClDyO7: C, 59.29; H 3.40; found: C, 59.87; H 3.67; FTIR (KBr) ν (cm−1): 3369, 2924, 1631, 1583, 1561, 1521, 1482, 1428, 1346, 1257, 1241, 1181, 1152, 1047, 986, 960, 851, 806, 745, 694, 644

• needles are formed over two weeks. Yield (single crystals) based on Dy: 18.3 mg, 10%. Elemental analysis (%) calculated (C194H136O34Dy4, 3661.03 g/mol): Anal. calcd for C194H136O34Dy4: C, 63.64; H 3.74; found: C, 63.51; H 3.66; FTIR (KBr) ν (cm−1): 3432, 3047, 2969, 1627, 1582, 1560, 1522, 1421, 1412

Facile synthesis of water-soluble carbon nano-onions under alkaline conditions

• Gaber Hashem Gaber Ahmed,
• Rosana Badía Laíño,
• Josefa Angela García Calzón and
• Marta Elena Díaz García

Beilstein J. Nanotechnol. 2016, 7, 758–766, doi:10.3762/bjnano.7.67

• diffraction studies were performed on a Bruker D8 Discover instrument with Cu Kα radiation. A Varian 620-IR instrument was used to analyse FTIR spectra on KBr pellets in the range from 600 to 4000 cm−1. PL spectra were measured using a Cary Eclipse Varian spectrofluorimeter. UV–vis spectrophotometric analysis

Coupled molecular and cantilever dynamics model for frequency-modulated atomic force microscopy

• Michael Klocke and
• Dietrich E. Wolf

Beilstein J. Nanotechnol. 2016, 7, 708–720, doi:10.3762/bjnano.7.63

• is switched on, the closest approach will be different. In this paper we present results for two kinds of atomic interactions. First the Lennard-Jones potential serves as a reference case. Then, a Coulomb interaction is added in order to simulate KBr, which has been studied extensively in experiments

• tip and stays on the surface of the substrate. This is not the case for the potential of KBr described below. If Lennard-Jones potentials are used exclusively, one way to stabilize the tip is to assume a larger ε parameter for the tip atoms than for the substrate atoms, εt > εs. For the interaction

• tip and the substrate, because the dissociation energy for the apex atom is not overcompensated by the adsorption energy. The parameters are chosen such that the lattice constant of a KBr crystal is reproduced, and that the error of the cohesive energy is less than 5%. They are given in Table 2, this

Length-extension resonator as a force sensor for high-resolution frequency-modulation atomic force microscopy in air

• Hannes Beyer,
• Tino Wagner and
• Andreas Stemmer

Beilstein J. Nanotechnol. 2016, 7, 432–438, doi:10.3762/bjnano.7.38

• that material properties primarily change along the fast scan axis. An example of how this additional slow feedback compensates for environmental changes is shown in Figure 3. Here, consecutive scans over a period of 140 min were performed on a KBr crystal surface with a frequency shift setpoint of

• , demonstrating the reliability of the method. In Figure 3b the topography of the last scan is shown together with a height profile along the line indicated (Figure 3c). A typical KBr surface with terraces separated by steps of approximately 315 pm is observed. Force regime As mentioned earlier, the force

• constant amplitude of 1.1 nm on a KBr(001) single crystal surface after cleavage in air. The initial excitation is 2.961 mV. Application of the slow feedback control. a) Evolution of frequency shift Δf (black), frequency shift offset Δfoffset (red), and dew point (blue) over 140 min. b) Large scale