FTIR-8400S SHIMADZU spectrometer (Shimadzu, Kyoto, Japan) was employed to record IR spectrum of the DAPH+Cl− product ranging from 400 to 3600 cm–1. 1H and 13C NMR spectra of the DAPH+Cl− were obtained on a Bruker Advance 400 MHz spectrometer (Bruker, Massachusetts, USA) in CDCl3at 298 K. Steady-state absorption and other spectral data were obtained on a JASCO V-730 UV–Vis spectrophotometer (Jasco, Tokyo, Japan). A Perkin Elmer 2400 CHN microanalyzer (Perkin Elmer, Waltham, USA) was used to perform the elemental analysis.
Ftir 8400s spectrometer
Manufactured by Shimadzu
Sourced in Japan, Germany
The FTIR-8400S spectrometer is a Fourier Transform Infrared (FTIR) spectrometer manufactured by Shimadzu. It uses infrared light to identify and measure the concentration of various compounds in a sample. The FTIR-8400S provides analytical data by detecting the absorption and transmission of infrared light through the sample.
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Lab products found in correlation
Avance drx 500 spectrometer, by Bruker (6 mentions)
Uv 2550, by Shimadzu (5 mentions)
Av 3 600 nmr spectrometer, by Bruker (5 mentions)
Av600 nmr spectrometer, by Bruker (4 mentions)
C18 ods a, by YMC (4 mentions)
Uv 2550 spectrophotometer, by Shimadzu (4 mentions)
Silica gel, by Qingdao Marine Chemical (4 mentions)
L dopa, by Merck Group (3 mentions)
Mushroom tyrosinase, by Merck Group (3 mentions)
400 mhz spectrometer, by Bruker (3 mentions)
J 815 spectropolarimeter, by Jasco (3 mentions)
341 digital polarimeter, by PerkinElmer (3 mentions)
C18 reversed phase silica gel, by Merck Group (3 mentions)
Mci gel chp 20p, by Mitsubishi Chemical Corporation (3 mentions)
Pack c18 column, by YMC (3 mentions)
V 730 uv vis spectrophotometer, by Jasco (2 mentions)
Advance 400 mhz spectrometer, by Bruker (2 mentions)
2998 photodiode array detector, by Waters Corporation (2 mentions)
2707 autosampler, by Waters Corporation (2 mentions)
Uv 250 spectrometer, by Shimadzu (2 mentions)
96 protocols using ftir 8400s spectrometer
1
Spectroscopic Characterization of DAPH+Cl-
2
Synthetic Benzimidazole Characterization
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FTIR-8400S SHIMADZU spectrometer (Shimadzu, Kyoto, Japan) was used for recording the IR spectra (KBr) of the synthetic benzimidazoles. The NMR spectra of the benzimidazole products were obtained on a Bruker Advance 400 MHz spectrometer (Bruker, Massachusetts, USA) in CDCl3 and DMSO at 25 ºC. Steady-state absorption and other spectral data were obtained on a JASCO V-730 UV-Vis spectrophotometer (Jasco, Tokyo, Japan).A Perkin Elmer 2400 CHN microanalyzer (Perkin Elmer, Waltham, USA) was used to perform the elemental analysis. The electron spray ionization mass spectral (ESI-MS) measurement was carried out on a Q-tof-micro quadruple mass spectrometer.
3
Infrared Spectroscopy of Heat-Treated Oils
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The infrared spectra of untreated and heat-treated oil samples for 4 h and 8 h, respectively, were recorded at room temperature (25 °C) in the range from 400 to 4000 cm−1 with a Shimadzu FTIR-8400S spectrometer (Shimadzu Corporation, Kyoto, Japan) equipped with an Attenuated Total Reflectance (ATR) accessory interfaced to a computer operating under Windows based on the Shimadzu IR solution software. The infrared spectra were obtained by subtracting the air reference spectrum. Reference and samples were measured with a scan time of 60 s and a resolution of 4 cm−1. A total of 1 mL of the SFO sample was disposed in a thin layer and used to record the FTIR spectra. The spectra were recorded in triplicate as absorbance values at each data point. The fixed-point method was applied to all recorded infrared spectra for baseline corrections [43 (link)].
4
Characterization of Organic Compounds
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Reagents were obtained from commercial suppliers and used without further purification. Acetonitrile (ACN) was dried using a Puresolv solvent. The reaction under an inert atmosphere was carried out using oven-dried glassware and solvents were added via syringe. 1H, 13C and 31P NMR spectra were obtained on a Bruker AVIII spectrometer operating at 400, 101, and 162 MHz, respectively or a Bruker AVIII operating at 500, 126, and 162 MHz, respectively. All coupling constants were measured in Hertz. Deuterated solvents contained trimethylsilane (TMS) as a reference compound. DEPT was used to assign the signals in 13C NMR spectra as C, CH, CH2 and CH3. Mass spectra (MS) were recorded on a Jeol JMS700 (MStation) spectrometer for EI and CI or Bruker Microtof-q for ESI. A Shimadzu FTIR-8400S spectrometer was used to obtain infrared (IR) spectra. Purification by used a Biotage Isolera automated system.
5
FTIR Spectral Analysis of Samples
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Fourier transform infrared spectroscopy (FTIR) was performed on the samples according to Zhao et al. [1 (link)] using an FTIR-8400S spectrometer (Shimadzu, Japan). Specifically, 1 mg of the dried sample was mixed with 100 mg of KBr and then pressed for 10 min at 8 tons to prepare the discs. Semi-quantitative analysis of the FTIR spectra, according to the method [2 (link)], and the band at 1519 cm−1 was used as a reference band to estimate the relative intensity of other bands [1 (link)].
6
Synthesis and Characterization of Nanocatalyst
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All chemicals and reagents were purchased with high purity from Merck or Aldrich and used as received, except for liquid aldehydes which were distilled before their use. The progress of reactions and the purity of the obtained products were monitored by thin layer chromatography (TLC) using Merck aluminum plates coated with 0.2 mm silica gel F254. Melting points were measured using an electrothermal 9100 device and are uncorrected. Characterization of the CS–TDI–PMDA–TS–Cu(ii ) nanocatalyst (1), as well as identification of products, was performed using KBr discs on a Shimadzu FTIR-8400S spectrometer. A Bruker DRX-500 Avance spectrometer was used for the recording of 1H NMR (500 MHz) spectra of products in DMSO-d6 at ambient temperature. Thermal gravimetric analysis data were gathered by a Bahr company STA 504 equipment. The X-ray diffraction pattern was carried out using an STOE apparatus with a CuKα radiation source. Field emission scanning electron microscopy images were recorded by a TESCAN-MIRA III device. All the products are known compounds and were identified by comparison of their physical and spectral data with those of authentic samples.
7
Structural Analysis of Natural Compounds
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UV and IR spectra were determined on a Shimadzu UV-250 spectrometer and a Shimadzu FTIR-8400S spectrometer, respectively. LC-PDA-ESIMS data were recorded on a Waters ACQUITY SQD MS system (Waters, Milford, MA, United States) connected to a Waters 1525 HPLC with a 2998 Photodiode Array Detector (Waters, Milford, MA, United States) and a Waters SunfireTMC18 column (5 μm, 4.6 mm × 150 mm). NMR (MeOH-d4 or DMSO-d6) spectra were acquired on an AVANCE III 600 MHz NMR spectrometer equipped with Micro NMR tubes (1.4 mm). The chemical shifts (δ) were reported in ppm, and coupling constants (J) were given in Hz. The ESIMS and HRESIMS data were recorded on a Q-TOF Micro LC-MS-MS mass spectrometer. A Thermo C18 5 μm column (22 mm × 150 mm) was used for semi-preparative HPLC. A Waters 2535 HPLC fitted with a 2998 Photodiode Array Detector and a 2707 Autosampler was used for the semi-preparative separations. Silica gel (300–400 mesh, Yantai Jiangyou Silica Development, Co., Ltd., Yantai, China) were used for column chromatography. Silica gel GF254 precoated glass plates (1.00 mm, Yantai Jiangyou Silica Development, Co., Ltd., Yantai, China) were used for preparative TLC (PTLC).
8
Synthesis and Characterization of 2-Amino-p-Cymene
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2-amino-p-cymene, mushroom tyrosinase, l -DOPA and other required chemicals were purchased from Sigma-Aldrich, St Louis, MO, USA. Melting points were determined using a Digimelt MPA 160 melting point apparatus and are reported uncorrected. FTIR spectra were recorded using Shimadzu FTIR–8400S spectrometer (Kyoto, Japan; υ, cm−1). 1H NMR and 13C NMR spectra (DMSO-d6) were recorded using a Bruker 400 MHz spectrometer (Brüker Biospin, Switzerland). Chemical shifts (δ) were reported in parts per million (ppm) downfield from the internal standard tetramethylsilane. The purity of the compounds was checked by thin layer chromatography (TLC) on silica gel plate using n-hexane and ethyl acetate as mobile phase.
9
Nanomaterial Characterization Techniques
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The fluorescence spectra were measured on a Cary Eclipse spectrofluorometer (Agilent, USA) with 365 nm excitation. The FT-IR spectra and UV-vis spectra were recorded on the FTIR-8400S spectrometer (Shimadzu, Japan) and WFN-203B spectrometer (Jingke, China), respectively. High-resolution transmission electron microscope (HR-TEM) and scanning electron microscopic (SEM) images of the nanomaterial used in this nanosensor were acquired on a JEM-2100 TEM (JEOL, Japan) and a field-emission SEM (FEI Teneo Volume Scope, USA), respectively. Moreover, electron dispersive X-ray spectroscopy (EDS) was carried out to trace the elemental composition (FEI Tecnai F20, USA).
10
Characterization of Organic Compounds
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The reaction progress was monitored by thin layer chromatography (TLC), and the Rf values were determined with pre-coated silica gel aluminum plates, Kieselgel 60 F254 from Merck (Darmstadt, Germany). TLC plates were visualized under a UV lamp (VL–4 LC, Collégien, France). The melting points were determined on a Fisher Scientific (Waltham, MA, USA) melting point apparatus. The FT-IR spectra were recorded in KBr pellets on a Shimadzu FTIR–8400S spectrometer (Kyoto, Japan). Proton and carbon nuclear magnetic resonance (1H-NMR and 13C-NMR) spectra were recorded on a Bruker Avance 400 MHz spectrometer with TMS as an internal standard. The chemical shifts are reported as δ values (ppm) downfield from the internal tetramethylsilane of the indicated organic solution. Peak multiplicities are expressed as follows: S, singlet; d, doublet; and m, multiplet. Mass spectra were recorded on the AB SCIEX Co. 4000 QTRAP LC/MS/MS System. The UV-visible absorption measurements were carried out using [SCINCO] UV-Vis Spectrophotometer “S-3100” (SCINCO, Seoul, Korea). Abbreviations are as follows: CD3OD, deuterated methanol; DMSO–d6, dimethyl sulfoxide-d6, and FT-IR spectroscopy, Fourier transform infrared spectroscopy.
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