A Fourier-transform infrared spectrometer (Nicolet 6700, Thermo Scientific, Waltham, USA) coupled with micro-attenuated total reflectance crystal (Golden Gate-Diamond ATR, Specac, Kent, UK) was used. Real-time DC of Theracal and Activa were determined by applying a 1 mm-thick sample onto the crystal and light curing for 180 s. The distance between the curing light (Elipar™ DeepCure-S LED, 3M, Bracknell, UK) and the specimen was set at 1 mm. The wavelength of the curing light was 430–480 nm and the light intensity was 1,470 mW/cm2. Decrease in the intensity of the 1640 cm−1 peak corresponding to –CH=CH2 stretching vibration was monitored. The peak that corresponds to the aromatic rings at 1608 cm−1 was used as an internal reference as it does not change in intensity during photo-polymerisation.
Golden gate diamond atr
Manufactured by Specac
Sourced in United Kingdom
The Golden Gate Diamond ATR is a laboratory equipment designed for attenuated total reflection (ATR) infrared spectroscopy. It features a diamond internal reflection element that enables analysis of a wide range of sample types, including solids, liquids, and pastes. The core function of the Golden Gate Diamond ATR is to facilitate infrared spectroscopic measurements in a simple and effective manner.
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Lab products found in correlation
Nicolet 6700, by Thermo Fisher Scientific (3 mentions)
Spectrum 100, by Specac (2 mentions)
640 ftirspectrometer, by Specac (2 mentions)
Avance 3 hd spectrometer, by Bruker (1 mentions)
Nickel 2 chloride hexahydrate, by Merck Group (1 mentions)
X pert pro mpd diffractometer, by Malvern Panalytical (1 mentions)
Chlorotrimethylsilane, by Merck Group (1 mentions)
Manganese 2 chloride tetrahydrate, by Merck Group (1 mentions)
2400 series 2 chns o elemental analyzer, by PerkinElmer (1 mentions)
6 protocols using golden gate diamond atr
1
Real-Time Monitoring of Dental Material Curing
2
Characterization of Organic Compounds
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Nuclear magnetic resonance (1H, 13C, 29Si NMR) spectra were recorded at 298 K on Bruker Avance III HD spectrometers. CDCl3 was used as a solvent. Fourier transform infrared (FT-IR) spectra were taken on a Bruker spectrometer, model Tensor 27, equipped with a SPECAC Golden Gate diamond ATR (Attenuated Total Reflection) unit. In each case, 16 scans were collected for a spectrum at the resolution of 2 cm−1. Gas chromatography (GC) was performed on a Varian GC-450 equipped with TCD detector, 30 m Resteck DB-5 MEGABORE capillary column with a film thickness of 1.5 μm. Helium was used as carrier gas supplied at a constant flow rate of 2 ml min−1. Temperature program was as follows: injector 220 °C, detector 240 °C and column oven program: start temperature 60 °C for 3 min ramp 10 °C min−1 to 300 °C which was held for 10 min.
3
Characterization of Metal Complexes
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Nickel(II) chloride hexahydrate (Merck (Darmstadt, Germany), 98%), manganese(II) chloride tetrahydrate (Merck, 99%), pyridin-2-one (Fluka (Munich, Germany) 97%), chlorotrimethylsilane (Aldrich (St. Louis, MO, USA), 97.0%), and all solvents (tetrahydrofuran, dichloromethane, acetonitrile, methanol, acetone) were used as purchased without any further purification.
The IR spectra (4000–600 cm−1) of the samples were recorded using a PerkinElmer Spectrum 100, equipped with a Specac Golden Gate Diamond ATR as a solid sample support.
Elemental (C, H and N) analyses were carried out with a PerkinElmer 2400 Series II CHNS/O micro analyzer at the University of Ljubljana (Department of Organic Chemistry).
X-ray powder diffraction data were collected using a PANalytical X’Pert PRO MPD diffractometer with CuKα1 radiation (wavelength 1.540596 Å) in the 2θ range from 5° to 70°.
Thermal analyses were performed on a Mettler Toledo TG/DSC 1 instrument (Mettler Toledo, Schwerzenbach, Switzerland) in argon or in air at a 100 mL/min gas flow. Masses of the samples were in the range 7.6–9 mg. Samples in platinum crucibles were heated from room temperature to 800 °C with a heating rate of 10 °C /min. In each case, the baseline was subtracted.
The IR spectra (4000–600 cm−1) of the samples were recorded using a PerkinElmer Spectrum 100, equipped with a Specac Golden Gate Diamond ATR as a solid sample support.
Elemental (C, H and N) analyses were carried out with a PerkinElmer 2400 Series II CHNS/O micro analyzer at the University of Ljubljana (Department of Organic Chemistry).
X-ray powder diffraction data were collected using a PANalytical X’Pert PRO MPD diffractometer with CuKα1 radiation (wavelength 1.540596 Å) in the 2θ range from 5° to 70°.
Thermal analyses were performed on a Mettler Toledo TG/DSC 1 instrument (Mettler Toledo, Schwerzenbach, Switzerland) in argon or in air at a 100 mL/min gas flow. Masses of the samples were in the range 7.6–9 mg. Samples in platinum crucibles were heated from room temperature to 800 °C with a heating rate of 10 °C /min. In each case, the baseline was subtracted.
4
Characterization of VO(acac)2 Compound
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Reagents and chemicals were obtained as reagent grade from commercial sources and were used as purchased without any further purification. VO(acac) 2 was prepared according to a literature procedure. 14 Infrared (IR) spectra (4000-600 cm -1 ) of the samples were recorded using a Perkin-Elmer Spectrum 100, equipped with a Specac Golden Gate Diamond ATR as a solid sample support. Elemental (C, H, N) analyses were obtained using a Perkin-Elmer 2400 Series II CHNS/O Elemental Analyzer.
5
FTIR Analysis of Protein Structure
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FTIR spectra were obtained with a Varian 640 FTIR
spectrometer equipped with a Specac Diamond ATR Golden Gate. Powdered
samples were scanned over a range of 4000 to 400 cm–1 at a resolution of 4 cm–1 at room temperature
and averaged over 64 scans. The α-helical and β-sheet
percentages were determined by deconvolution and assignment of the
resulting peaks to the corresponding secondary structure.
spectrometer equipped with a Specac Diamond ATR Golden Gate. Powdered
samples were scanned over a range of 4000 to 400 cm–1 at a resolution of 4 cm–1 at room temperature
and averaged over 64 scans. The α-helical and β-sheet
percentages were determined by deconvolution and assignment of the
resulting peaks to the corresponding secondary structure.
6
FTIR Analysis of Sample Spectra
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The FTIR spectra were obtained by employing a Varian 640 FTIR spectrometer equipped with a Specac Diamond ATR golden gate. Samples were placed on the top of the diamond and were scanned in the range from 4000 to 400 cm−1 at a resolution of 1 cm−1 at RT. Each spectrum was sampled with 64 scans, and the final analyzed spectrum was averaged with at least three independently acquired spectra.
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