Nanocomposites comprised of homogeneously dispersed magnetic iron-oxide nanoparticles and poly(methyl methacrylate)

• Sašo Gyergyek,
• David Pahovnik,
• Ema Žagar,
• Alenka Mertelj,
• Rok Kostanjšek,
• Miloš Beković,
• Marko Jagodič,
• Heinrich Hofmann and
• Darko Makovec

Beilstein J. Nanotechnol. 2018, 9, 1613–1622, doi:10.3762/bjnano.9.153

• -shift standard. The diffuse reflectance infrared Fourier transform spectra (DRIFT, Perkin Elmer Spectrum 400 equipped with DRIFT accessory) were recorded in KBr. The weight fraction of nanoparticles in the nanocomposites was determined with a Mettler Toledo thermogravimetric analysis (TGA) instrument

Closed polymer containers based on phenylboronic esters of resorcinarenes

• Tatiana Yu. Sergeeva,
• Rezeda K. Mukhitova,
• Irek R. Nizameev,
• Marsil K. Kadirov,
• Polina D. Klypina,
• Albina Y. Ziganshina and
• Alexander I. Konovalov

Beilstein J. Nanotechnol. 2018, 9, 1594–1601, doi:10.3762/bjnano.9.151

• the region of 4000–400 cm−1 by using a Bruker Vector-22 FTIR-spectrophotometer with a resolution of 4 cm−1. Samples for the registration of the IR spectra were prepared in KBr pellets. NMR spectroscopic experiments were carried out with an Avance 600 spectrometer (Bruker, Germany) equipped with a

Induced smectic phase in binary mixtures of twist-bend nematogens

• Anamarija Knežević,
• Irena Dokli,
• Marin Sapunar,
• Suzana Šegota,
• Ute Baumeister and
• Andreja Lesac

Beilstein J. Nanotechnol. 2018, 9, 1297–1307, doi:10.3762/bjnano.9.122

• technique for determining changes in chemical interactions and molecular geometry in LC phases [37][38][39][40], we investigated the 73 mol % BB mixture using temperature-dependent FTIR measurements. IR spectra were recorded using a KBr pastille method. Since in a binary mixture the cyano group of CBI may

Enzymatically promoted release of organic molecules linked to magnetic nanoparticles

• Chiara Lambruschini,
• Silvia Villa,
• Luca Banfi,
• Fabio Canepa,
• Fabio Morana,
• Annalisa Relini,
• Paola Riani,
• Renata Riva and
• Fulvio Silvetti

Beilstein J. Nanotechnol. 2018, 9, 986–999, doi:10.3762/bjnano.9.92

• quat.), 64.5 (CH2=CHCH2O), 60.5 (α-CH Val), 52.0 (α-CH Lys), 51.7 (OCH3), 50.6 (α-CH Leu), 40.4 (β-CH2 Leu), 39.5 (ε-CH2 Lys), 30.4 (β-CH2 Lys), 30.0 (β-CH Val), 29.1 (CH2 Lys), 28.3 (t-Bu CH3), 24.1 (γ-CH Leu), 23.2 (CH3), 22.8 (CH2 Lys), 21.2 (CH3), 19.1 (CH3), 18.3 (CH3); IR (KBr) : 3296 (w), 3076

• ), 30.1 (β-CH Val), 29.1 (CH2 Lys), 28.3 (t-Bu CH3), 24.1 (γ-CH Leu), 23.2 (CH3), 22.9 (CH2 Lys), 21.1 (CH3), 19.1 (CH3), 18.3 (CH3) ppm; IR (KBr) : 3297 (w), 2961 (w), 2873 (w), 1709 (m), 1645 (m), 1526 (m), 1454 (w), 1392 (m), 1367 (m), 1246 (m), 1167 (m), 1036 (w), 994 (w), 929 (w), 861 (w), 777 (w

• ); IR (KBr) : 3275 (w), 3043 (w), 2957 (w), 2930 (w), 2870 (w), 1678 (m), 1627 (s), 1530 (s), 1468 (m), 1390 (m), 1365 (m), 1276 (m), 1250 (m), 1168 (m), 1101 (w), 1064 (w), 1009 (w), 962 (w), 892 (w), 840 (s), 819 (m), 751 (m) cm−1; HRMS (ESI+) m/z: [M + H+]: calcd for C39H54N5O5: 672.4125; found

Synthesis and characterization of two new TiO₂-containing benzothiazole-based imine composites for organic device applications

• Anna Różycka,
• Agnieszka Iwan,
• Krzysztof Artur Bogdanowicz,
• Michal Filapek,
• Natalia Górska,
• Damian Pociecha,
• Marek Malinowski,
• Patryk Fryń,
• Agnieszka Hreniak,
• Jakub Rysz,
• Paweł Dąbczyński and
• Monika Marzec

Beilstein J. Nanotechnol. 2018, 9, 721–739, doi:10.3762/bjnano.9.67

• accuracy of ±0.1 K and stabilized for ≈3 min before the measurements were taken. The spectra were carried out in the spectral range of 4000–500 cm−1 with a resolution of 2 cm−1 and 32 scans per each spectrum. The SP1 and SP2 samples were mixed with KBr and then compressed into pellets before measurements

Electron interaction with copper(II) carboxylate compounds

• Michal Lacko,
• Peter Papp,
• Iwona B. Szymańska,
• Edward Szłyk and
• Štefan Matejčík

Beilstein J. Nanotechnol. 2018, 9, 384–398, doi:10.3762/bjnano.9.38

• FTIR spectrometer and a Spectrum RXI PerkinElmer, using KBr plates (400–4000 cm−1). The Cu content was determined with a Varian Spectr AA-20 Plus spectrophotometer. The content of C and H was determined CHNS Elemental Analyser-Euro Vector model 3018. The yield of the complexes synthesis was about 60

• (O2CC2F5)2+ (452, 40); Cu2(EtNH2)2(O2CC2F5)3+ (705, 4), IR (KBr): , 3244, 3075, 2993, 2835, 2738, 2624, 2528, 2087, 1675, 1531, 1479, 1462, 1413, 1326, 1212, 1161, 1030, 821, 799, 733, 585, 541, 422 cm−1. [Cu2(s-BuNH2)2(µ-O2CC2F5)4] C20H22Cu2F20N2O8 (calc./found) % Cu 13.7/14.2, C 26.0/25.4, N 2.4/3.8, H

• 2.4/3.7, EIMS T = 145 °C (m/z, RI %) C2H5N+/CO2+• 44, 100; C3H8N+ 58, 14; C2F4+• 100, 41; C2F5+ 119, 32; Cu(s-BuNH2)+ 136, 2; Cu2F+ 145,5; Cu2(O2CC2F5)+ 289, 33; Cu2(O2CC2F5)2+• 452, 13; Cu2(O2CC2F5)3(s-BuNH2)2+ 761, 2; IR (KBr): 3240, 3121, 2980, 2945, 2892, 2747, 2655, 2567, 1678, 1612, 1518, 1489

Sugarcane juice derived carbon dot–graphitic carbon nitride composites for bisphenol A degradation under sunlight irradiation

• Lan Ching Sim,
• Jing Lin Wong,
• Chen Hong Hak,
• Jun Yan Tai,
• Kah Hon Leong and
• Pichiah Saravanan

Beilstein J. Nanotechnol. 2018, 9, 353–363, doi:10.3762/bjnano.9.35

• . Characterization of CD/g-C3N4 composites FTIR spectra (Perkin Elmer Spectrum 400 spectrophotometer) were conducted in the range of 400–4000 cm−1 with the samples dispersed in KBr. The XRD analyses were performed using the powder XRD (PANalytical-Empyrean) with Cu Kα radiation at a scanning speed of 0.02 s−1. A

Synthesis and characterization of electrospun molybdenum dioxide–carbon nanofibers as sulfur matrix additives for rechargeable lithium–sulfur battery applications

• Ruiyuan Zhuang,
• Shanshan Yao,
• Maoxiang Jing,
• Xiangqian Shen,
• Jun Xiang,
• Tianbao Li,
• Kesong Xiao and
• Shibiao Qin

Beilstein J. Nanotechnol. 2018, 9, 262–270, doi:10.3762/bjnano.9.28

• molecules on the nanofibers of KBr. A photo of the nonwoven PAN/PMA material is depicted in Figure 3a. The morphology of the as-prepared composite fibers and calcined fibers was further characterized by FE-SEM and TEM. The PAN/PMA composite fibers showed smooth surfaces due to their amorphous nature (Figure

• (BET) surface area was determined by nitrogen adsorption–desorption using a NOVA 2000e analyzer. The presence of functional groups was examined by Fourier transform infrared spectrometry (FTIR, Avatar-370 spectrometer) using the standard method of KBr in the scanning range of 400–4000 cm−1. The size

Dielectric properties of a bisimidazolium salt with dodecyl sulfate anion doped with carbon nanotubes

• Doina Manaila Maximean,
• Viorel Cîrcu and
• Constantin Paul Ganea

Beilstein J. Nanotechnol. 2018, 9, 164–174, doi:10.3762/bjnano.9.19

• concentration. Experimental Characterization methods All chemicals were used as supplied. C, H, N analyses were carried out with an EuroEA 3300 instrument. IR spectra were recorded on a Bruker spectrophotometer using KBr discs or by using a Jasco FTIR 4200 spectrophotometer coupled to an ATR PIKE GladiATR

Response under low-energy electron irradiation of a thin film of a potential copper precursor for focused electron beam induced deposition (FEBID)

• Leo Sala,
• Iwona B. Szymańska,
• Céline Dablemont,
• Anne Lafosse and
• Lionel Amiaud

Beilstein J. Nanotechnol. 2018, 9, 57–65, doi:10.3762/bjnano.9.8

• calcd. for C20H14Cu2F28N2O8: Cu, 11.8, C, 22.5; H, 1.32; found: Cu,12.2; C, 22.8; H, 2.11; EIMS (T = 417 K) m/z (% relative intensity): [C2H7N]+ 45 (7), [Cu2(EtNH2)(O2CC3F7)]+ 384 (2), [Cu2(O2CC3F7)]+ 339 (100); [Cu2(O2CC3F7)2]+ 552 (28), [Cu2(EtNH2)2(O2CC3F7)3]+ 855 (3); IR (KBr): 3063, 3014, 2924

Synthesis of [{AgO₂CCH₂OMe(PPh₃)}_n] and theoretical study of its use in focused electron beam induced deposition

• Jelena Tamuliene,
• Julian Noll,
• Peter Frenzel,
• Tobias Rüffer,
• Alexander Jakob,
• Bernhard Walfort and
• Heinrich Lang

Beilstein J. Nanotechnol. 2017, 8, 2615–2624, doi:10.3762/bjnano.8.262

• cold ethanol (2 × 20 mL at 0 °C) and diethyl ether (2 × 15 mL). Yield: 0.53 g (2.69 mmol, 91%, based on HO2CCH2OMe; silver content 55%). Anal. calcd for C3H5AgO3: C, 18.30; H, 2.56%; found: C, 18.45, H, 2.63%; mp 190 °C decomposition; IR (KBr, cm−1) υ: 2999 (m), 2835 (m), 1610 (CO2,asym, vs), 1585 (s

• : C, 54.69; H, 4.47%; mp 145 °C; IR (KBr, cm−1) υ: 3056 (w), 2977 (w), 1594 (m), 1585 (m), 1575 (CO2,asym, s), 1569 (s), 1479 (m), 1436 (m), 1402 (CO2,sym, m), 1319 (m), 1189 (m), 1104 (s), 1026 (w), 997 (w), 934 (m), 907 (w), 754 (m), 745 (m), 706 (m), 694 (s); 1H NMR (CDCl3) δ 3.44 (s, 3H, CH3

Imidazolium-based ionic liquids used as additives in the nanolubrication of silicon surfaces

• Patrícia M. Amorim,
• Ana M. Ferraria,
• Rogério Colaço,
• Luís C. Branco and
• Benilde Saramago

Beilstein J. Nanotechnol. 2017, 8, 1961–1971, doi:10.3762/bjnano.8.197

• days. The pure product was obtained as a brown viscous liquid (8.4g, 78%). 1H NMR (DMSO-d6, 400 MHz) δ 3.87 (s, 3H), 4.84 (d, J = 4.00 Hz, 2H), 5.33 (m, 2H), 6.04 (m, 1H), 7.70 (d, J = 4.00 Hz, 2H), 9.09 ppm (s, 1H); 19F NMR (DMSO-d6, 282 MHz) δ −77.99, −77.62 ppm; FTIR (KBr) : 518.86, 575.30, 642.20

• ), 7.28 (m, 1H), 7.94 (s, 1H), 8.19 (s, 1H), 9.50 ppm (s, 1H); FTIR (KBr) : 585.28, 620.68, 781.43, 847.05, 919.84, 959.21, 1013.61, 1060.70, 1118.96, 1173.10, 1389.78, 1453.22, 1552.34, 1574.08, 1655.44, 2361.69, 2988.76, 3145.11, 3437.22 cm−1; Anal. calcd for C8H14N2O4S·(1.1H2O): C, 37.82; H, 6.43; N

Fabrication of carbon nanospheres by the pyrolysis of polyacrylonitrile–poly(methyl methacrylate) core–shell composite nanoparticles

• Dafu Wei,
• Youwei Zhang and
• Jinping Fu

Beilstein J. Nanotechnol. 2017, 8, 1897–1908, doi:10.3762/bjnano.8.190

• measurements were repeated three times and the average values are given. The FTIR spectra were obtained using a Nicolet Magna 550 spectrometer and KBr pellets. The Raman spectra were obtained from a Jobin Yvon T64000 Raman system. The excitation was at 514.5 nm. The laser power was set to 35 mW. The C, H and N

Methionine-mediated synthesis of magnetic nanoparticles and functionalization with gold quantum dots for theranostic applications

• Arūnas Jagminas,
• Agnė Mikalauskaitė,
• Vitalijus Karabanovas and
• Jūrate Vaičiūnienė

Beilstein J. Nanotechnol. 2017, 8, 1734–1741, doi:10.3762/bjnano.8.174

• Scofield’s relative sensitivity factors. The FTIR spectra were recorded in transmission mode with a Bruker Vertex 70v vacuum FTIR spectrometer over the wavenumber range of 4000–400 cm−1. A 7 mm thick KBr discs were prepared under high pressure by mixing the powdered samples with KBr powder. Samples for AFM

Fluorination of vertically aligned carbon nanotubes: from CF₄ plasma chemistry to surface functionalization

• Claudia Struzzi,
• Mattia Scardamaglia,
• Jean-François Colomer,
• Alberto Verdini,
• Luca Floreano,
• Rony Snyders and
• Carla Bittencourt

Beilstein J. Nanotechnol. 2017, 8, 1723–1733, doi:10.3762/bjnano.8.173

• KBr window, while the other side is closed by a gold mirror. The IR beam coming from the MIR source crosses the KBr window and the plasma phase to reach the opposite side of the section and be reflected by the mirror. After reflection, the IR beam crosses again the plasma region to be collected by the

• detector behind the KBr window allowing an in situ multi-reflection FTIR spectroscopy with 26 passes through the plasma region corresponding to an optical length of around 31.2 m. The data reported here are obtained with a resolution of 0.2 cm−1. The chemical composition of the fluorinated vCNT is

Uptake and intracellular accumulation of diamond nanoparticles – a metabolic and cytotoxic study

• Antonín Brož,
• Lucie Bačáková,
• Pavla Štenclová,
• Alexander Kromka and
• Štěpán Potocký

Beilstein J. Nanotechnol. 2017, 8, 1649–1657, doi:10.3762/bjnano.8.165

• measurements to eliminate sample cross contamination. A Nicolet 8700 FTIR spectrometer (Thermo Scientific, USA) was equipped with N2 purging, a KBr beamsplitter and an MCT detector cooled by liquid nitrogen. 50 µL of the water suspension with NDs was applied on the Au mirror by the drop-casting method just

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