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

Single-molecule magnet behavior in 2,2’-bipyrimidine-bridged dilanthanide complexes

• Wen Yu,
• Frank Schramm,
• Eufemio Moreno Pineda,
• Yanhua Lan,
• Olaf Fuhr,
• Jinjie Chen,
• Hironari Isshiki,
• Wolfgang Wernsdorfer,
• Wulf Wulfhekel and
• Mario Ruben

Beilstein J. Nanotechnol. 2016, 7, 126–137, doi:10.3762/bjnano.7.15

• −17 °C and by layering EtOH onto a CHCl3 solution of 1, 4 and 5 at room temperature, respectively. Results of elemental analyses and isolated yields are given in Table 1. Physical measurements and instrumentation IR transmission measurements of pressed KBr pellets were recorded at room temperature

Surfactant-controlled composition and crystal structure of manganese(II) sulfide nanocrystals prepared by solvothermal synthesis

• Elena Capetti,
• Anna M. Ferretti,
• Vladimiro Dal Santo and
• Alessandro Ponti

Beilstein J. Nanotechnol. 2015, 6, 2319–2329, doi:10.3762/bjnano.6.238

• precipitate immediately formed, which was collected by filtration using a Buchner funnel previously cooled to −20 °C and washed with cold methanol (3 times, 10 mL). Drying under vacuum (p ≈ 10−2 torr) for 6 h gave MnSt2 as a white powder. The average yield was ≈50%. IR (KBr), ν (cm−1): 2955, 2917, 2849, 1552

• carbon-coated TEM grid. ATR-FTIR spectra (4 cm−1 resolution, 50 scans) were collected using an ATR platform (Golden Gate, Specac) mounted in a spectrophotometer (FTS-40, Biorad) equipped with a KBr beam splitter and a MCT detector operating between 400 and 4000 cm−1. For ATR-FTIR spectroscopy, the

Green synthesis, characterization and catalytic activity of natural bentonite-supported copper nanoparticles for the solvent-free synthesis of 1-substituted 1H-1,2,3,4-tetrazoles and reduction of 4-nitrophenol

• Akbar Rostami-Vartooni,
• Mohammad Alizadeh and
• Mojtaba Bagherzadeh

Beilstein J. Nanotechnol. 2015, 6, 2300–2309, doi:10.3762/bjnano.6.236

• reagents All reagents were purchased from the Merck and Sigma-Aldrich and used without further purification. The bentonite and Thymus vulgaris plant used in this paper were collected from the Vartoon region (Isfahan, Iran). The IR spectra were recorded on a JASCO, FT/IR-6300 instrument in KBr pellets. The

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

• , ESI has been successfully applied to deposit triply fused porphyrin molecules on an insulating KBr(001) surface in UHV environment. Different deposition coverages have been obtained and characterization of the surface by in-situ atomic force microscopy working in the non-contact mode shows details of

• molecules which are more suitable for future devices and could incorporate additional functions and anchoring groups. In this work we present the adaptation of a UHV-ESI system to deposit triply fused porphyrin molecules on a bulk insulator KBr(001) sample and the analysis of theses deposits by high

• performed a deposition of the solvent solution only, i.e., toluene/isopropanol in the ratio 2:1 on a clean KBr(001) surface. Figure 2a shows a topography image acquired by nc-AFM at room temperature on a KBr(001) surface after a total time of 30 min of UHV-ESI deposition of the pure solvent. This is a long

Lower nanometer-scale size limit for the deformation of a metallic glass by shear transformations revealed by quantitative AFM indentation

• Arnaud Caron and
• Roland Bennewitz

Beilstein J. Nanotechnol. 2015, 6, 1721–1732, doi:10.3762/bjnano.6.176

• by means of atomic force microscopes (AFM indentation) has been used to observe the nucleation and gliding of single dislocations in a KBr(100) single crystal [7] and in Cu(100) [8]. Pop-ins were observed in load–displacement curves, and the pop-in length observed in AFM-indentation was in the range

• much larger distance than for the metallic glass. In our study the AFM indentation of Pt(111) is similar to KBr(100) or Cu(100) where plastic flow has been found to extend over several 100 nm from the AFM indentation site [7][8]. In contrast, the plastic flow of Pt57.5Cu14.7Ni5.3P22.5 metallic glass is

• previous AFM indentation results on crystalline KBr(100) [7] and Cu(100) [8]. The increased pop-in length at higher loads is also in good agreement with nanoindentation results on (111)-oriented fcc-metal surfaces such as Au(111), for which burst-like dislocations activation has been observed [3]. However

Radiation losses in the microwave K_u band in magneto-electric nanocomposites

• Talwinder Kaur,
• Sachin Kumar,
• Jyoti Sharma and
• A. K. Srivastava

Beilstein J. Nanotechnol. 2015, 6, 1700–1707, doi:10.3762/bjnano.6.173

• size 0.02°). Attached functional groups have been analysed with Fourier transform infrared spectrometry (FTIR interferometer IR prestige-21 FTIR (model-8400S)) in the range of 400–4000 cm−1 by making calcined product pallets with KBr in a weight ratio of 1:10. ESR measurements were performed at room

Synthesis, characterization and in vitro biocompatibility study of Au/TMC/Fe₃O₄ nanocomposites as a promising, nontoxic system for biomedical applications

• Hanieh Shirazi,
• Maryam Daneshpour,
• Soheila Kashanian and
• Kobra Omidfar

Beilstein J. Nanotechnol. 2015, 6, 1677–1689, doi:10.3762/bjnano.6.170

• nanoparticles. To understand the effect of coating on the magnetization behavior of Fe3O4, the magnetic nanoparticles were subjected to VSM (MAG-3110, Freescale) analysis. By means of FTIR (Thermo Nicolet Nexus 870 FTIR, USA) and using KBr pellets, the assembly of the Au nanoparticles on magnetic nanoparticles

The convenient preparation of stable aryl-coated zerovalent iron nanoparticles

• Olga A. Guselnikova,
• Andrey I. Galanov,
• Anton K. Gutakovskii and
• Pavel S. Postnikov

Beilstein J. Nanotechnol. 2015, 6, 1192–1198, doi:10.3762/bjnano.6.121

• [29]. IR analysis of the powder in KBr pellets indicates the presence of the 4-nitrophenyl functional group on the NP surface. Figure 1 compares the IR spectrum of nitrobenzene and 4-nitrophenyl-coated ZVI NPs. The NP spectrum exhibits strong adsorption bands corresponding to the benzene ring skeletal

• radiation (1.5405 Å). The FTIR spectra were measured using the KBr pellet technique with a Nicolet 5700 spectrometer ranging from 400 to 4000 cm−1. Differential thermal and thermogravimetric analysis was carried out on a SDT Q60 thermal analyzer in the temperature range 20–600 °C with a heating rate of 10

• washed with diethyl ether, filtered under reduced pressure and dried under vacuum. Caution! Diazonium salts in the dry state are potentially explosive. Therefore, they must be carefully stored and handled. Mp 132 °C; IR (KBr): 2308 (N≡N); 1H NMR (300 MHz, DMSO); δ 2.28 (s, 3H), 7.10 (d, J = 7.5 Hz, 2H

Synthesis, characterization, monolayer assembly and 2D lanthanide coordination of a linear terphenyl-di(propiolonitrile) linker on Ag(111)

• Zhi Chen,
• Svetlana Klyatskaya,
• José I. Urgel,
• David Écija,
• Olaf Fuhr,
• Willi Auwärter,
• Johannes V. Barth and
• Mario Ruben

Beilstein J. Nanotechnol. 2015, 6, 327–335, doi:10.3762/bjnano.6.31

• work station for MALDI–ToF. MALDI spectra were measured with no additional matrix compound other than the sample itself. Elemental analysis of carbon, hydrogen, and nitrogen were carried out in a Vario Micro Cube. Infrared spectra were measured in KBr pellets (MAGNA FTIR 750, Nicolet) in the 4000–400

• /ppm 4.34 (d, J = 5.96 Hz, 4H, –CH2–), 5.37 (t, J = 5.96, 5.96 Hz, 2H, –OH), 7.54 (d, J = 8.37 Hz, 4H, Ar–H), 7.77 (d, J = 8.39 Hz, 4H, Ar–H), 7.82 (s, 4H, Ar–H); 13C NMR (126 MHz, DMSO-d6) δ/ppm 139.21, 138.43, 131.88, 127.20, 126.74, 121.62, 90.79, 83.39, 49.48; IR (KBr, cm−1): 2184 (C≡C); MALDI–ToF

• , 82.86, 63.95; IR (KBr, cm−1): 2260 (C≡N), 2141, (C≡C); MALDI–ToF (m/z): [M]+ calcd for C24H12N2, 328.1; found, 328.1; Anal. calcd for C24H12N2: C, 87.79; H, 3.68; N, 8.53; found: C, 87.63; H, 3.45; N 8.81. Additionally, 10 mg of a white solid was separated. The analytical data were identical to