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10 protocols using jnm ecp500

1

Nanomaterial Characterization Techniques

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SEM images were recorded using a TM303Plus (Hitachi, Japan) without coating. Nuclear magnetic resonance (NMR) spectra were recorded on a JNM-ECP500 (JEOL, Tokyo). UV-Vis spectra were recorded on a Multiskan GO (Thermo Fischer Scientific, Waltham, MA, USA).
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2

Characterization of Organic Compounds

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Electron ionization-mass spectra (EI-MS) were recorded using a spectrometer (AX505HA, JEOL, Tokyo, direct probe, 70eV). Electrospray time-of-flight mass spectrometry (ESI-TOFMS) and high-resolution (HR)-ESI-TOFMS data were obtained with a mass spectrometer (LCT Premier XE, Waters, Milford, MA, USA). Nuclear magnetic resonance (NMR) spectra were measured with spectrometry (JNM-ECP 500, JEOL and Avance II 600, Bruker, Karlsruhe, Germany). Chemical shifts were referenced to acetone-d6H 2.04 and δC 29.8).
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3

Catalytic Conversion of Methane and Benzene

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Catalytic tests were performed in a fixed‐bed flow reactor. Methane (99.9 % from Iwatani) and benzene (special grade, Wako) were used, and in some cases, methane enriched with 13C (13C 99.9 % from Hinomaru Industry, Tottori) was used for the confirmation of reaction path. In standard conditions, powder sample (0.300 g) was placed in a Pyrex tube (i.d.: 10 mm) and pretreated in a flow of nitrogen (1.23 mmol min−1) in the atmospheric pressure at 823 K for 1 h. Then, a mixture of methane and benzene (98.6 and 2.7 kPa, 1.2 and 0.033 mmol min−1, respectively, corresponding to Wcat/Fbenzene=147 gcat h molbenzene−1) was fed to the catalyst bed at 773 K. The outlet materials were trapped by hexane at 273 K with 1,4‐diisopropylbenzene as an inner standard material and analyzed with flame ionization detector‐gas chromatograph (FID‐GC, Shimadzu GC‐2010) or were analyzed by using a mass‐spectrometer (MS, Pfeiffer Vacuum QMS200) directly connected to the outlet of a reactor. The MS measurements were carried out by means of inner standard method using helium as the standard. The molecular weight of the product of reaction using 13C‐enriched methane was analyzed with a GC‐MS (JMS‐T100GCV, JEOL). The 13C NMR were recorded on JEOL JNM ECP500 at 11.7 T. Chemical shifts are expressed in ppm downfield from Si(CH3)4.
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4

Analytical Techniques for Chemical Characterization

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Nuclear magnetic resonance (NMR) spectra were recorded on a JNM-ECP500 (JEOL, Tokyo, Japan) or an Avance II600 (Bruker, Billerica, MA, USA). Infrared (IR) spectra of the samples were measured using a Spectrum 65 (Perkin-Elmer Japan, Tokyo, Japan) equipped with an attenuated total reflection (ATR) attachment. Elemental analysis data were measured on a Perkin Elmer 2400 II CHNS/O (Perkin Elmer, Franklin Lakes, NJ, USA). Mass spectra were measured using an ExactiveTM plus Orbitrap MASS spectrometer (Thermo Fischer Scientific, Waltham, MA, USA). Fluorescence spectra were recorded on an RF-6000 (Shimadzu, Kyoto, Japan).
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5

Monomer Content Analysis of Copolymers

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To calculate the monomer content in the copolymer, 1H-NMR spectra were recorded using a JEOL RESONANCE spectrometer (JNM-ECP500; Tokyo, Japan) operated at 400 MHz. Deuterated chloroform (CDCl3) was used as a solvent, and chemical shifts of the peaks were recorded with respect to tetramethylsilane (TMS). The thermal properties of the prepared materials were investigated through differential scanning calorimetry (DSC, DSC6100, Seiko Instruments Inc., Tokyo, Japan). The heating rate was 10 °C/min, and the data from the second scan were adopted. The photoluminescence of the adsorbed fluorescent probes was evaluated through a fluorescence spectrophotometer (Scope.A1, ZEISS Research Microscopy Solutions, GmbH, Jena, Germany) to estimate the positive charge. Moreover, the surface characteristics were studied on the basis of the ATR-IR spectra recorded by the Spectrum On system (PerkinElmer, Billerica, MA, USA). Zeta potential was measured using a zeta potential analyzer (ELS-2000ZS, Otsuka Electronics, Osaka, Japan).
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6

Lanthanide Complex Structural Analyses

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Elemental analyses (C, H, and N) were performed using a vario EL (Elementar Analysensysteme GmbH Co.). 1H-NMR spectra were collected on a JEOL JNM-ECP 500. UV spectra and luminescence spectra were recorded on a Shimadzu UV-3600S and a Horiba Jobin Yvon Fluorolog 3-22, respectively. Absolute luminescence quantum yield values were measured using a Hamamatsu Photonics K.K. C9920-02 for the UV-vis wavelength region and C13534 for NIR. Structural analyses of a series of LnL complexes were performed using a Rigaku Synergy S and XtaLAB mini II, Rigaku Oxford diffractometer with Mo Kα radiation (λ = 0.71073 Å). The structures were solved by direct methods and refined on F2 by a full-matrix least-squares method using the SHELXTL-97 program: CCDC 2144933 (at 90 K) and 2144934 (at 300 K) for EuL, 2144935 for GdL, 2144936 for TbL, 2144931 for NdL, 2144932 for SmL, 2144937 for DyL, and 2144938 for YbL. Synchrotron X-ray diffraction data were collected at the beam line BL02B2 (λ = 0.998983 Å) in SPring-8. The sample was held in a glass capillary (Markröhrchenaus Glas, 0.3 mm, Hilgenberg Co.)
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7

Comprehensive Characterization of Chemical Compounds

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Nuclear magnetic
resonance (NMR) spectra were recorded on a JNM-ECP500 (JEOL, Tokyo,
Japan). Infrared (IR) spectra of the samples were recorded using a
Spectrum 65 (PerkinElmer Japan, Tokyo, Japan) equipped with an attenuated
total reflection attachment. Elemental analysis data were measured
on a PerkinElmer 2400 II CHNS/O (PerkinElmer, Franklin Lakes, NJ,
USA). Mass spectra were recorded using an Exactive plus Orbitrap MASS
spectrometer (Thermo Fischer Scientific, Waltham, MA, USA). UV–vis
spectra were recorded on a Multiskan GO (Thermo Fischer Scientific,
Waltham, MA, USA). Fluorescence spectra were recorded on an RF-6000
(Shimadzu, Kyoto, Japan). Cyclic voltammetry (CV) was performed on
a BAS 700E electrochemical analyzer (BAS, Tokyo, Japan) using the
closed-type electrolysis cell equipped with a glassy carbon as the
working electrode, a platinum wire as the counter electrode, and a
saturated calomel electrode as the reference electrode.
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8

NMR and Mass Spectrometry Protocols

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1H NMR and 13C NMR spectra were recorded on 500 MHz JEOL JNM-ECP500 spectrometers using tetramethylsilane (δ 0), CDCl3 (δ 7.26), DMSO (δ 2.49) or acetone (δ 2.05) as an internal standard. Mass spectra were recorded on Shimadzu GCMS QP-5000 or JEOL JMS-AX 700 spectrometers.
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9

Chemical Characterization of Compounds

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All starting materials were obtained from Sigma-Aldrich, Wako Pure, or Tokyo Chemical Industries and used as supplied. Solvents for chemical synthesis were acquired from commercial sources and used without further purification unless otherwise stated. Flash column chromatography was performed using Merck silica gel 60, whereas reactions and chromatography fractions were performed using Merck thin-layer chromatography (TLC) plates 60 F 254 . Compounds were visualized by an ultraviolet lamp (254 and 360 nm). Melting points (°C) were determined with a Yanaco micro melting point apparatus and remained uncorrected. Specific rotation, [α] D , was measured on a Jasco Digital Polarimeter. Mass analysis was performed with an electrospray mass JEOL JMS-AX 700 spectrometer, and gas chromatography was coupled with a mass spectrometer of high-resolution. 1 H and 13 C NMR spectral analyses were performed on a JEOL JNM-ECP500 (500 MHz), with tetramethylsilane as the internal standard. Chemical shifts are reported in units of (δ) ppm. The following abbreviations were used to explain the multiplicities: s, singlet; d, doublet; t, triplet; dd, double doublet; m, multiplet, and br, broad.
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10

Quantitative 11B NMR Spectroscopy of AOG

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Sample for 11 B NMR measurement was MLV, which was prepared by the same method with sample for the CLSM. It should be noted that there was no signal in 11 B NMR when preparing samples by the sonication method. The reason for this defect is probably contamination of trace amount of paramagnetic titanium derived from a sonicator tip. If the pH of the sample needed changing, an aqueous solution containing sodium hydroxide or hydrogen chloride was added to boric acid solution prior to dissolving AOG. The samples were added to a PTFE sample tube and measurements were performed at various pH values at 25.0℃. The spectra were obtained using a JNM-ECP500 (JEOL, Tokyo, Japan) . Chemical shifts in ppm were referenced with respect to an external BF 3 (Et 2 O) standard at 0.0 ppm. To acquire proper spectrum in the present NMR, a number of times accumulation needed (at least ≥ 10,000) .
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