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

Recombinant DNA technology and click chemistry: a powerful combination for generating a hybrid elastin-like-statherin hydrogel to control calcium phosphate mineralization

• Mohamed Hamed Misbah,
• Mercedes Santos,
• Luis Quintanilla,
• Christina Günter,
• Matilde Alonso,
• Andreas Taubert and
• José Carlos Rodríguez-Cabello

Beilstein J. Nanotechnol. 2017, 8, 772–783, doi:10.3762/bjnano.8.80

• purification, ELRs were characterized using matrix-assisted laser deposition ionization time of flight mass spectrometry (MALDI-TOF-MS), attenuated total reflection infrared spectroscopy (ATR-IR) and nuclear magnetic resonance spectroscopy (1H NMR). 3 Preparation of ELR hydrogels ELR hydrogels were made by

• 1H NMR spectroscopy was performed using an Agilent 400 MHz spectrometer (Agilent technologies) equipped with an Agilent MR console 400 and one NMR probe. For NMR experiments, 15–20 mg of the ELR sample was dissolved in 600 µL deuterated dimethyl sulfoxide (DMSO-d6). Chemical shifts (δ) are given in

• derivative was confirmed by 1H NMR spectroscopy (Supporting Information File 1, Figures S5, S6). The 1H NMR spectra show signals at 2.91, 4.02, and 7.04 ppm, which can be assigned to the methylene group adjacent to the carbamate group, the methylene group adjacent to the cyclopropyl and carbamate groups, and

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

• = 218.27 g/mol); 1H NMR (300 MHz, D2O, δ in ppm): 1.637 (q, 2H); 1.922 (q, 2H); 2.839 (t, 2H); 3.787 (s, 3H); 4.144 (t, 2H); 7.335 (d, 1H); 7.396 (d, 1H); 8.635 (s, 1H); elemental analysis, found (calculated, %): C 44.02 (43.92); H 6.46 (6.31); N 12.83 (12.78); S 14.69 (14.91). Preparation of 1-methyl-3-(3

• = 390.47 g/mol); 1H NMR (300 MHz, D2O, δ): 1.577 (q, 2H); 1.843 (q, 2H); 2.234 (s, 3H); 2.782 (t, 2H); 3.712 (s, 3H); 4.056 (t, 2H); 7.252 (ar, 4H); 7.515 (d, 2H); 8.540 (s, 1H). Elemental analysis: found (calculated, %): C 46.14 (44.18); H 5.68 (5.33); N 7.17 (6.93); S 16.42 (15.72). The reason for the

α-((4-Cyanobenzoyl)oxy)-ω-methyl poly(ethylene glycol): a new stabilizer for silver nanoparticles

• Jana Lutze,
• Miguel A. Bañares,
• Marcos Pita,
• Andrea Haase,
• Andreas Luch and
• Andreas Taubert

Beilstein J. Nanotechnol. 2017, 8, 627–635, doi:10.3762/bjnano.8.67

• function of the pH value both for the free stabilizer and for the polymers bound to the surface of the silver nanoparticles using 1H NMR spectroscopy and zeta potential measurements. The polymer shows a high stability between pH 3 and 9. At pH 12 and higher the polymer coating is degraded over time

• permeation chromatography (GPC) measurements with refractive index (RI) detector. 1H NMR (300 MHz, D2O) δ 8.05 (m, 4H), 4.53 (m, 2H), 3.67 (m, 488H); ATR-IR (cm−1): 2947 (sh, v(CH)), 2885 (s, v(CH)), 2742 (vw, v(CH)), 2696 (vw, v(CH)), 1724 (w, v(C=O)), 1466 (m, δ(CH2)), 1412 (w, δ(CH2)), 1358 (w, δ(CH2), v

• values were not considered. CBAmPEG was then dissolved in each of the pH-adjusted D2O solutions at a concentration of 0.02 mol/L and the mixtures were heated to 37 °C. After 6, 12, 18, and 24 h 1H NMR spectra of each solution were recorded. Evaluation of the cleavage of the polymer on the silver

Investigation of the photocatalytic efficiency of tantalum alkoxy carboxylate-derived Ta₂O₅ nanoparticles in rhodamine B removal

• Subia Ambreen,
• Mohammad Danish,
• Narendra D. Pandey and
• Ashutosh Pandey

Beilstein J. Nanotechnol. 2017, 8, 604–613, doi:10.3762/bjnano.8.65

• Sigma-Aldrich and used as such for carrying out the reactions. Toluene was dried by standard procedures. 1H NMR and 13C NMR spectra were recorded in CDCl3 and DMSO-d6 on a Bruker Biospin ARX spectrometer with TMS as internal reference. Ta2O5 was prepared by sol–gel synthesis through hydrolysis

• NMR (25 °C) δ 1.09, 1.21 (t, CH2CH3), 3.50, 4.16 (q, CH2CH3), 4.07 (s, ClCH2COO); 13C NMR (25 °C) δ 18.0 (CH2CH3), 61 (CH2CH3), 84.2 (ClCH2COO), 179.5 (ClCH2COO). Ta(OEt)4(OOCCHCl2) (4): 1H NMR (25 °C) δ 1.10, 1.19 (t, CH2CH3), 3.56, 4.18 (q, CH2CH3), 5.9 (s, Cl2CHCOO); 13C NMR (25 °C) δ 18.1 (CH2CH3

• ), 61.3 (CH2CH3), 85.8 (Cl2CHCOO), 175 (Cl2CHCOO). Ta(OEt)4(OOCCCl3) (5): 1H NMR (25 °C) δ 1.12, 1.25 (t, CH2CH3), 3.66, 4.23 (q, CH2CH3); 13C NMR (25 °C) δ 18.1 (CH2CH3), 59.8 (CH2CH3), 93 (CCl3COO), 189 (CCl3COO). Ta(On-Bu)4(OOCCH2Cl) (6): 1H NMR (25 °C) δ 0.92, 0.94 (t, CH3CH2CH2CH2), 1.38, 1.42 (m

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

• in vacuo to afford azide 2 as an off-white solid (1.09 g, 96%). Mp 119–121 °C; 1H NMR (500 MHz, chloroform-d) δ 7.76–7.61 (m, 6H), 7.60–7.53 (m, 2H), 7.52–7.44 (m, 4H), 7.17–7.05 (m, 2H); 13C NMR (126 MHz, chloroform-d) δ 143.98 (d, J = 3.0 Hz), 133.85 (d, J = 10.8 Hz), 132.29 (d, J = 105.0 Hz

Association of aescin with β- and γ-cyclodextrins studied by DFT calculations and spectroscopic methods

• Ana I. Ramos,
• Pedro D. Vaz,
• Susana S. Braga and
• Artur M. S. Silva

Beilstein J. Nanotechnol. 2017, 8, 348–357, doi:10.3762/bjnano.8.37

• method applied to aqueous-phase 1H nuclear magnetic resonance (1H NMR) has demonstrated that the preferred CD/aescin inclusion stoichiometries are 2:1 with β-CD and 1:1 with γ-CD. The affinity constant calculated for γ-CD·aescin was 894 M−1, while for 2β-CD·aescin it was estimated to be 715 M−1. Density

• also occurs with β-CD. The geometry of the γ-CD·aescin complex is characterised by the inclusion of the triterpene segment of aescin into the host cavity. Keywords: aescin; cyclodextrin inclusion; DFT; 1H NMR; ROESY; Introduction Aescin is the main component of the crystalline saponins obtained from

• , for each optimised inclusion complex geometry, the 1H NMR chemical shifts of signals of the protons H3 and H5 of the host were calculated and compared with those calculated for the neat cyclodextrins. For the 2β-CD·aescin complex two possible geometries were optimised. These structures are represented

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

• = 7.6 Hz, J = 0.9 Hz, 1H, H6), 8.99 (d, J = 7.9 Hz, 1H, H4’), 9.02 (d, J = 7.9 Hz, 1H, H4), 9.81 (s, 1H, H1’); 13C{1H} NMR (125.7 MHz, CDCl3/DMSO-d6 (9:1)) δC 13.73 (CH3), 22.25 (C(15)H2), 26.63 (C(3)H2), 27.08 (NCH2CH2), 28.91 (C(4)H2+C(13)H2), 29.34–29.00 (C(5)H2–C(12)H2), 31.49 (C(14)H2), 39.66 (NCH2

• NMR spectroscopy NMR experiments were performed with a 500 MHz (500 MHz for 1H NMR; 125 MHz for 13C NMR; 50.7 MHz for 15N NMR, respectively) spectrometer equipped with a 5 mm diameter gradient direct broad band probehead and a pulsed gradient unit capable of producing magnetic field pulse gradients in

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

• Pa·s). PTHF-UDMA. Yield: 10.8 g (93.5 %); 1H NMR (CDCl3, δ) 8.09 (4H, NH); 6.06 (d, 2H, CH2=C in trans position relative to CH3 unit); 5.53 (s, 2H, CH2=C in cis position relative to CH3 group); 4.15 (m, 4H, NH-COO-CH2-CH2); 4.01 (m, 4H, COO-CH2-CH2-O); 3.67 (m, 106H, CH2-CH2-CH2-CH2 from PTHF); 3.41 (m

• . Characterization The structure of PTHF-UDMA monomer was confirmed by 1H NMR spectroscopy using a Bruker Avance DRX 400 spectrometer. The viscosity of PTHF-UDMA monomer was measured with a rotational viscometer RM 100 Touch (Lamy Rheology Instruments, France) using a cone/plate set up (2° cone angle, 40 mm diameter

Intercalation and structural aspects of macroRAFT agents into MgAl layered double hydroxides

• Dessislava Kostadinova,
• Ana Cenacchi Pereira,
• Muriel Lansalot,
• Franck D’Agosto,
• Elodie Bourgeat-Lami,
• Fabrice Leroux,
• Christine Taviot-Guého,
• Sylvian Cadars and
• Vanessa Prevot

Beilstein J. Nanotechnol. 2016, 7, 2000–2012, doi:10.3762/bjnano.7.191

• different samples and marked with green stars and dotted lines in Figure 6 most likely correspond to some of the C atoms within end-chain fragments of the macroRAFT agents (see Figure 1). Two-dimensional (2D) 13C–1H correlation spectra exploiting 13C–1H proximities were collected to shed light on the 1H NMR

• 1H (vertical) dimension of the 2D spectra are compared to 1D 1H NMR spectra recorded at a faster spinning frequency (60 kHz) and shown on the right side. In both Figure 7a and 7b, the black spectrum corresponds to a quantitative 1H spin-echo experiment, whereas the red spectrum corresponds to a

• ). As the mixing time increases, this initial magnetization propagates to increasingly long distances, which results in the progressive growth of all 1H NMR peaks associated with protons located close enough to the LDH layers, which includes the water signal at 4.8 ppm, the backbone CH and CH2 protons

A dioxaborine cyanine dye as a photoluminescence probe for sensing carbon nanotubes

• Mohammed Al Araimi,
• Petro Lutsyk,
• Anatoly Verbitsky,
• Yuri Piryatinski,
• Mykola Shandura and
• Aleksey Rozhin

Beilstein J. Nanotechnol. 2016, 7, 1991–1999, doi:10.3762/bjnano.7.190

• product was dissolved in 80% aqueous ethanol and then the solution of sodium acetate (0.2 g) in ethanol was added. The precipitate was filtered out and purified via chromatography on a silica column (7:3 v/v acetone/methanol as an eluent) to yield 300 mg (20%) of product as a green powder. 1H NMR (300 MHz

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

• , paramagnetic 1H NMR, MALDI-TOF mass spectrometry, UV–vis spectrophotometry and magnetic measurements. Both static (dc) and dynamic (ac) magnetic properties of these complexes have been investigated, showing slow relaxation of magnetization, indicative of single molecule magnet (SMM) behavior. Attempts to

• properties. In addition, these complexes have been characterized by means of single crystal X-ray analysis, paramagnetic 1H NMR, MALDI–TOF spectrometry and UV–vis spectrophotometry. Furthermore, attempts to synthesize sublimable phenalenyl-based dysprosium complexes 4 have been made. The sublimed species 4

• the spectra of complex 4 and its sublimed species 4’ suggests that the sublimable dysprosium complex contains three deprotonated phenalenyl ligands as structurally proposed in Scheme 2. NMR experiments The paramagnetic 1H NMR spectra of complexes 1–4 obtained in deuterated DMSO are shown in Figure S6

Reconstitution of the membrane protein OmpF into biomimetic block copolymer–phospholipid hybrid membranes

• Matthias Bieligmeyer,
• Franjo Artukovic,
• Stephan Nussberger,
• Thomas Hirth,
• Thomas Schiestel and
• Michaela Müller

Beilstein J. Nanotechnol. 2016, 7, 881–892, doi:10.3762/bjnano.7.80

• with molecular weights between 877 g mol−1 and 3188 g mol−1 to allow for a compromise between membrane fluidity, stability and thickness (Figure 1A) [18][21]. The molecular properties were analyzed by size-exclusion chromatography (Figure 1B) and 1H NMR (Supporting Information File 1, Figure S1

Characterisation of thin films of graphene–surfactant composites produced through a novel semi-automated method

• Nik J. Walch,
• Alexei Nabok,
• Frank Davis and
• Séamus P. J. Higson

Beilstein J. Nanotechnol. 2016, 7, 209–219, doi:10.3762/bjnano.7.19

• -coated glass using a method of total internal reflection ellipsometry (TIRE) which revealed the enhancement of the surface plasmon resonance in thin gold films by depositing graphene layers. Keywords: characterization; ellipsometry; graphene; 1H NMR; surfactant; Introduction Since its initial discovery

• graphene–surfactant composite material Graphene was synthesised using graphite suspensions of 10–50% using either SDS or CTAB as the surfactants. The concentration of the final graphene solution obtained from each synthesis was determined by spectrophotometry (Figure 2). 1H NMR measurements of the graphene

• –surfactant complex, when compared to 1H NMR measurements of the surfactant alone, shows shifting of peaks representing hydrogens involved in the complexation interaction (Figure 3). The data shows a peak shift towards the left for almost every peak. This is a shielding effect caused by the delocalised

Single pyrimidine discrimination during voltage-driven translocation of osmylated oligodeoxynucleotides via the α-hemolysin nanopore

• Yun Ding and
• Anastassia Kanavarioti

Beilstein J. Nanotechnol. 2016, 7, 91–101, doi:10.3762/bjnano.7.11

• –vis, and 1H NMR [42]. Moreover molecular masses corresponding to adducts with 1, 2, or 3 OsBp moieties were obtained by MALDI TOF for oligos with 1, 2, or 3 Ts, respectively [42]. Unpublished data suggest false positives and false negatives to be below 1/10,000, a remarkable feat for any modification

Fabrication and characterization of novel multilayered structures by stereocomplexion of poly(D-lactic acid)/poly(L-lactic acid) and self-assembly of polyelectrolytes

• Elena Dellacasa,
• Li Zhao,
• Gesheng Yang,
• Laura Pastorino and
• Gleb B. Sukhorukov

Beilstein J. Nanotechnol. 2016, 7, 81–90, doi:10.3762/bjnano.7.10

• composition and molecular weight of PLA polymers The chemical structure of PDLA and PLLA was characterized by 1H NMR. As can be seen in Figure 1a, the peak at 1.61 ppm belongs to the methyl group while the 5.19 ppm peak was assigned to the protons of the CH2 group. The small peak between 7–8 ppm was assigned

• . Afterwards, the crude polymer was dissolved in dichloromethane and precipitated in diethyl ether and this process was repeated three times to get rid of impurities and small molecules. 1H NMR characterization was carried out using a Bruker AV spectrometer at a frequency of 400 MHz at room temperature. CDCl3

Sonochemical co-deposition of antibacterial nanoparticles and dyes on textiles

• Ilana Perelshtein,
• Anat Lipovsky,
• Nina Perkas,
• Tzanko Tzanov and
• Aharon Gedanken

Beilstein J. Nanotechnol. 2016, 7, 1–8, doi:10.3762/bjnano.7.1

• kHz was used during acquisition and a 3 sec recycle delay between acquisitions. Chemical shifts were given with respect to adamantane (38.55, 29.497 ppm). In addition, the 1H NMR measurements of the dye-containing solution was performed after the sonication to probe for possible chemical changes in

• dissolved in D2O at a concentration of 1.6 g/L and sonicated for 60 min. The 1H NMR spectra were measured, and no changes were observed in the NMR spectra of the solutions before and after sonication, confirming that no degradation of the dyes has occurred during the sonochemical treatment (Figure 5). The

• only dyes by dipping procedure; (iv) bandages coated with CuO NPs by the sonochemical method. HRSEM images of (a) RB5 sonochemically deposited on cotton, (b) ZnO coated in the presence of RB5, (c) CuO coated in the presence of RB5; insets were taken in higher magnification. 1H NMR spectra of the dyes

pH-Triggered release from surface-modified poly(lactic-co-glycolic acid) nanoparticles

• Manuel Häuser,
• Klaus Langer and
• Monika Schönhoff

Beilstein J. Nanotechnol. 2015, 6, 2504–2512, doi:10.3762/bjnano.6.260

• NMR, yielding a pH-dependent release curve. A release of PDADMAC is initiated by a decrease of the pH value. The released amount of polymer, as quantified by 1H NMR analysis, clearly depends on the pH value and thus on the state of deprotonation of the pH-sensitive PAA layer. Subsequent incubation of

• release of PDADMAC is concluded from 1H NMR spectroscopy. Although 1H NMR spectroscopy lacks sensitivity, it has significant advantages with respect to selectivity and robustness compared to current state of the art analytical methods, such as chromatography and titration strategies [28], which are

• PDADMAC To probe pH-tunability after adsorption of the second PAA layer, a titration experiment using HCl (25 mM) was carried out, as described in the Experimental section. PDADMAC desorption was monitored by quantitative 1H NMR spectroscopy, using an external standard of resorcinol in D2O as a reference

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

• and the product was obtained as a colorless solid (78%). 1H NMR (400 MHz, CDCl3) δ −0.37 (s, 1H, ZnCH3), 1.39 (s, 1H, CH3), 1.48 ppm (s, 3H, CH3); 13C NMR (100 MHz, CDCl3) δ −6.66 (ZnCH3), 32.11 (C(CH3)3), 32.29 (C(CH3)3), 75.15 (C(CH3)3), 76.12 (C(CH3)3); MS (EI) m/z: M-CH3+ 710.9. Preparation of [Br

• removed via centrifugation; the solvent was removed under reduced pressure and the product was obtained as a colorless solid (52%). 1H NMR (400 MHz, CDCl3) δ −0.38 (s, 1H, ZnCH3), 1.38 (s, 1H, CH3), 1.45 ppm (s, 3H, CH3); 13C NMR (100 MHz, CDCl3) δ −7.16 (ZnCH3), 32.09 (C(CH3)3), 32.13 (C(CH3)3), 75.08 (C

• . Insoluble impurities were removed via centrifugation; the solvent was removed under reduced pressure. The colorless solid was recrystallized from hexane (56%). 1H NMR (400 MHz, CDCl3) δ 0.37 (q, 3J = 8.1 Hz, 6H, ZnCH2CH3), 1.26 (t, 3J = 8.1 Hz, 9H, ZnCH2CH3), 1.30, 1.35 (each d, 3J = 6.1 Hz, altogether 24H

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

• molecular axle 1H+ (Figure 4) was thus synthesized, and the photoinduced transit of the dibenzo-24-crown-8 ether 2 was investigated in acetonitrile at room temperature by steady state and time-resolved 1H NMR spectroscopy and UV–vis absorption experiments [32]. The kinetic measurements demonstrated that the

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

• ; mp 163.2 °C; 1H NMR (200 MHz, CD3OD) δ 7.32 (d, J = 8.0 Hz, 1H), 7.24 (d, J = 3.2 Hz, 1H), 7.06 (m, 1H), 6.93 (d, J = 6.8 Hz, 1H), 6.51 (dd, J = 3.2, 0.9 Hz, 1H), 4.65 (s, 2H), 2.55 (m, 4H); 19F NMR (188 MHz, CD3OD) δ −82.38 (m, 3F), −115.74 (m, 2F), −122.87 (m, 6F), −123.75 (m, 2F), −124.52 (m, 2F

• -tridecafluorononanamide (Indole-4-F6): Yield 25%; yellow solid; mp 150.2 °C; 1H NMR (200 MHz, CD3OD) δ 7.32 (d, J = 8.0 Hz, 1H), 7.24 (d, J = 3.2 Hz, 1H), 7.06 (m, 1H), 6.92 (d, J = 7.0 Hz, 1H), 6.50 (dd, J = 3.2, 0.9 Hz, 1H), 4.65 (s, 2H), 2.55 (m, 4H); 19F NMR (188 MHz, CD3OD) δ −82.43 (m, 3F), −115.74 (m, 2F), −122.93

• -((1H-Indol-4-yl)methyl)-4,4,5,5,6,6,7,7,8,8,8-undecafluorooctanamide (Indole-4-F4): Yield 21%; yellow solid; mp 139.8 °C; 1H NMR (200 MHz, CD3OD) δ 7.32 (d, J = 8.1 Hz, 1H), 7.24 (d, J = 3.2 Hz, 1H), 7.06 (m, 1H), 6.93 (d, J = 7.6 Hz, 1H), 6.50 (dd, J = 3.2, 0.9 Hz, 1H), 4.65 (s, 2H), 2.55 (m, 4H); 19F

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

• spectrophotometer, Perkin Elmer, USA), verifying the synthesis of the Au nanoparticles. Polymer characterization 1H NMR spectra were measured in D2O at 80 °C using a 300 or 600 MHz spectrometer. 13C NMR spectra were measured in D2O at 80 °C at 150 MHz. No attempts were made to remove the residual water from the NMR

• sample because at 80 °C this peak does not interfere with the spectrum of the polymer [39][53]. The 1H NMR spectra were used to determine the degree of quaternization (DQ) [39]. Furthermore, both of the polymers were analyzed using FTIR for analysis of inter- and intra-molecular interaction during

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

• 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

Electrical characterization of single molecule and Langmuir–Blodgett monomolecular films of a pyridine-terminated oligo(phenylene-ethynylene) derivative

• Henrry M. Osorio,
• Santiago Martín,
• María Carmen López,
• Santiago Marqués-González,
• Simon J. Higgins,
• Richard J. Nichols,
• Paul J. Low and
• Pilar Cea

Beilstein J. Nanotechnol. 2015, 6, 1145–1157, doi:10.3762/bjnano.6.116

• product was obtained as an off-white powder. The yield was 0.156 g, 0.556 mmol, 69%. 1H NMR (400 MHz, CDCl3) δ 8.62 (d, J = 5 Hz, 4H, a); 7.56 (s, 4H, g), 7.38 (d, J = 5 Hz, 4H, b). 13C NMR (101 MHz, CDCl3) δ 150.0 (a), 132.1(g), 131.2 (c), 125.6 (b), 123.0 (f), 93.3, 89.0 (d/e) [112]; MS(ASAP) m/z

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

• prepared according to previous literature [58]. 1H NMR and 13C NMR spectra were recorded on a Bruker DRX 500 spectrometer. The chemical shifts are given in ppm and are referenced to residual proton resonances of the solvents. The mass spectroscopic data were acquired with a Voyager-DE PRO Bio spectrometry

• at 60 °C for 36 h. Next, hexane (50 mL) was added and the residue was filtered off and dissolved in THF. The solution was chromatographed on silica gel using dichloromethane/ethyl acetate 5:1 as eluent with a short column, affording 240 mg of 5 as yellow solid (yield 71%). 1H NMR (500 MHz, DMSO-d6) δ

• concentrated in vacuum. The residue was purified by column chromatography on silica gel (hexane/dichloromethane 2:1) affording 51 mg of 2 as light yellow solid (yield 26%). 1H NMR (500 MHz, CDCl3) δ/ppm 7.69–7.75 (m, 12H); 13C NMR (126 MHz, CDCl3) δ/ppm 143.69, 139.46, 134.11, 127.85, 127.41, 116.60, 105.54