All the reagents were of analytical grade and used without further purification. Melting points were determined on a Beijing Taike melting point apparatus (X-4) (Taike, Beijing, China) and were uncorrected. IR spectra were obtained on a Bruker ALPHA-T spectrometer (BRUKER Inc., Beijing, China). 1H NMR and 13C NMR spectra were recorded on a Bruker AV400 spectrometer (BRUKER Inc., Beijing, China) with CDCl3 (Energy Chemical., Shanghai, China) as the solvent and TMS (Energy Chemical., Shanghai, China) as the internal standard. HRMS spectra were recorded on an FTICR-MS spectrometer (BRUKER Inc.). X-ray diffraction data were recorded on a BRUKER D8 VENTURE X-diffractometer (BRUKER Inc.) with Mo Kα radiation (λ = 0.71073 Å) at 273(2) K.
Alpha t spectrometer
Manufactured by Bruker
Sourced in China, Germany
The ALPHA-T spectrometer is a compact and robust Fourier Transform Infrared (FTIR) spectrometer designed for routine analysis. It provides high-quality FTIR measurements across a wide spectral range.
Automatically generated - may contain errors
Lab products found in correlation
Av 400 spectrometer, by Bruker (3 mentions)
Fticr ms spectrometer, by Bruker (3 mentions)
Cdcl3, by Energy Chemical (2 mentions)
Ftms ultral apex ms spectrometer, by Bruker (2 mentions)
D8 venture x diffractometer, by Bruker (1 mentions)
Ls 55 fluorescence spectrometer, by PerkinElmer (1 mentions)
Uv 2550 ultraviolet spectrophotometer, by Shimadzu (1 mentions)
Phs 3c ph meter, by INESA (1 mentions)
Cu kα radiation, by Shimadzu (1 mentions)
Skyscan 1172 system, by Bruker (1 mentions)
Am 400, by Bruker (1 mentions)
Tracegc polarisq, by Thermo Fisher Scientific (1 mentions)
R axis rapid area detector diffractometer, by Rigaku (1 mentions)
Dmso d6, by Energy Chemical (1 mentions)
Uv 2600 uv vis spectrophotometer, by Shimadzu (1 mentions)
Supra 55, by Zeiss (1 mentions)
Jem 2100 plus, by JEOL (1 mentions)
Uv vis spectrometer, by PerkinElmer (1 mentions)
Autolab potentiostat, by Metrohm (1 mentions)
Dimension icon, by Bruker (1 mentions)
23 protocols using alpha t spectrometer
1
Synthesis and Characterization of Novel Compounds
2
FT-IR Spectroscopy of Solid Powder
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FT-IR spectra were recorded from 400 to 4000 cm–1 with a resolution of 4 cm–1 using
an Alpha-T spectrometer (Bruker). For the solid powder, a small amount
of it was added into KBr salt, and the well-mixed powder was compressed
into a transparent disk.
an Alpha-T spectrometer (Bruker). For the solid powder, a small amount
of it was added into KBr salt, and the well-mixed powder was compressed
into a transparent disk.
3
Synthesis of TCNQ Salts with Organic Cations
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All chemicals and solvents used were purchased from commercial sources (Merck, Alfa Aesar, Kemika), were of p.a. or reagent grade and used without additional purification.
The compounds were prepared by a modification of our method for the preparation of salts of semiquinone radicals with organic cations (Molčanov et al., 2011 ▸ , 2012 ▸ , 2016 ▸ , 2018a ▸ , 2019 ▸
b ▸ ). Powdered TCNQ (20.0 mg) was dissolved in cold acetone (5 ml, at 5°C) until the solution was approximately saturated. Into the solution an excess of solid iodide salt of the appropriate organic cation was added [in the case of1 2·Br·(TCNQ)2 it was bromide]. The beaker was sealed with paraffin and left overnight at room temperature; the next day the acetone solution was decanted and black crystals of the TCNQδ− salt were washed with acetone and dried.
Infrared spectra were recorded with KBr pellets using a Bruker Alpha-T spectrometer in the 4000–350 cm−1 range.
The compounds were prepared by a modification of our method for the preparation of salts of semiquinone radicals with organic cations (Molčanov et al., 2011 ▸ , 2012 ▸ , 2016 ▸ , 2018a ▸ , 2019 ▸
b ▸ ). Powdered TCNQ (20.0 mg) was dissolved in cold acetone (5 ml, at 5°C) until the solution was approximately saturated. Into the solution an excess of solid iodide salt of the appropriate organic cation was added [in the case of
Infrared spectra were recorded with KBr pellets using a Bruker Alpha-T spectrometer in the 4000–350 cm−1 range.
4
Comprehensive Analytical Characterization
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All chemicals and solvents were purchased from commercial providers and used without purifying. FT-IR spectra were measured using a Bruker ALPHA-T spectrometer (KBr, Bruker, Germany). The 1H NMR and 13C NMR spectra were recorded on a Bruker AVANVE 400 MHz system (Bruker, Germany) using CF3COOD as the solvent. The HRMS was carried out on an FTMS Ultral Apex MS spectrometer (Bruker Daltonics Inc., USA). The ultraviolet–visible (UV-vis) spectra were gained on a UV-2550 ultraviolet spectrophotometer (Shimadzu, Japan). The fluorescence spectra were obtained through the PerkinElmer LS55 fluorescence spectrometer (PerkinElmer, UK). All pH values were made with PHS-3C pH meter (Inesa, China).
5
FTIR analysis of solid samples
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An appropriate amount of solid sample and KBr were compressed into a transparent disk, which was measured on an Alpha-T spectrometer (Bruker) from 400 to 4000 cm−1. For the vesicle sample, the solution was freeze-dried for 48 h into a solid.
6
FT-IR Spectroscopy of Ground Stone Specimens
7
FT-IR Analysis of Lipid Nanoparticles
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Three milligrams of each sample (LNP I, LNP II, and LNP III) was mixed with 100 mg KBr powder, thoroughly ground, and compressed in a mold for FT-IR measurement at the frequency range 4,000–400 cm−1. IR spectra were recorded on a Bruker Alpha-T spectrometer (Bruker, Rheinstetten, Germany)
8
Characterization of PEI-modified Magnetite Nanoparticles
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Morphologies were characterized using a transmission electron microscope (TEM, Jeol TEM-1200; Tokyo, Japan). The magnetite characteristics were studied using a powdered X-ray diffractometer (XRD) (Shimadzu Cu Kα radiation at λ=1.54060 Å, Tokyo, Japan). The size and surface charge of the PEI-modified nanoparticles were confirmed using a dynamic light scattering devise (DLS, ELSZ-2000, Otsuka Electronics, Osaka, Japan). The surface chemistry of the nanoparticles was determined using Fourier transform infrared spectroscopy (FTIR, Bruker ALPHA-T spectrometer, Billerica, MA, USA). In addition, the stability of the nanoparticles was studied using the Zetasizer (ELSZ-2000, Otsuka Electronics) to determine the change in size upon storage at 4 °C for at least two weeks. The magnetic power of the nanoparticles was measured using a Superconducting Quantum Interference Device (SQUID, Quantum Design MPMS, Darmstadt, Germany). The temperature dependence of the magnetic susceptibility (ø) M/H was measured as a function of temperature in a magnetic field, where M is the magnetization and H is the applied magnetic field.
9
Micro-CT Analysis and Clinical Characterization of Stone Composition
10
Micro-CT Analysis of Urinary Stones and Biopsies
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