The structures of GO and GOMO were characterized using FTIR spectroscopy (Bruker VERTEX 70, Germany), raman shift spectroscopy (Bruker VERTEX 70, Germany) and X-ray diffraction patterns (2700 model, China). Scanning electron microscopy (SEM) images of GO and GOMO were obtained using an electron microscope (Helios 600i, Japan).
Vertex 70
Manufactured by Bruker
Sourced in Germany, United States, United Kingdom, Switzerland, Japan, France, Italy, China
The Vertex 70 is a Fourier Transform Infrared (FTIR) spectrometer manufactured by Bruker. It is designed to perform high-resolution infrared spectroscopy analysis of various samples. The Vertex 70 provides accurate measurements of the absorption, emission, or reflectance properties of materials across the infrared spectrum.
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Lab products found in correlation
Escalab 250xi, by Thermo Fisher Scientific (38 mentions)
D8 advance, by Bruker (25 mentions)
K alpha, by Thermo Fisher Scientific (20 mentions)
S 4800, by Hitachi (15 mentions)
Hyperion 2000, by Bruker (15 mentions)
Escalab 250, by Thermo Fisher Scientific (15 mentions)
Opus software, by Bruker (13 mentions)
Jem 2100, by JEOL (13 mentions)
Opus 7, by Bruker (12 mentions)
Platinum atr ql, by Bruker (8 mentions)
Nano zs90, by Malvern Panalytical (8 mentions)
Asap 2020, by Micromeritics (8 mentions)
Pma 50, by Bruker (8 mentions)
Sta449f3, by Netzsch (8 mentions)
Quattro s, by Thermo Fisher Scientific (7 mentions)
Zetasizer nano zs90, by Malvern Panalytical (7 mentions)
Opus 6, by Bruker (7 mentions)
Cary 5000, by Agilent Technologies (6 mentions)
Lc ltq orbitrap xl spectrometer, by Thermo Fisher Scientific (6 mentions)
Zetasizer nano z, by Malvern Panalytical (6 mentions)
1 011 protocols using vertex 70
1
Characterization of GO and GOMO
2
Infrared Reflectance and Transmission Measurements
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Experimental reflection measurements of both structures were carried out using an infrared microscope (Bruker Hyperion 2000) and the Fourier transform infrared (FTIR) spectrometer (Bruker Vertex 70) with liquid nitrogen cooled mercury cadmium telluride and near-IR source. Reflected light was collected using Hyperion 2000 IR microscope with a 15× magnification objective and a numerical aperture of 0.4. For the calibration of the reflection measurement, we first collected the reflection from a reference gold mirror between 1 and 6 μm. Measured reflection from the samples was then calibrated using the reflection spectra of the gold mirror. Experimental transmission of thin Cr films was measured using Fourier transform infrared (FTIR) spectrometer (Bruker Vertex 70) equipped with a room temperature triglycine sulfate (DTGS) detector. We did not measure transmission of the MIM because it has an optically thick 100 nm Au bottom metal, which prevents the light transmission.
3
Morphological Characterization of HSQ Microstructures
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The morphology and shape of HSQ microstructures constructed by FsLDW were measured by using field-emission scanning electron microscope (FE-SEM, S-4800, Hitachi) at 5 kV accelerating voltage after being deposited with a thin layer of Au. The surface roughness of the HSQ microstructures were measured using an atomic force microscope (AFM, Fastscan IconBio, Bruker). The optical microscopy images were characterized by a laser scanning confocal microscope (LSCM, A1R MP, Nikon) using an oil-immersion objective lens (N.A. = 1.40, 60 × , Nikon). Raman and FT-IR spectra of HSQ film with and without fs laser exposure were characterized by using Raman spectroscopy (Raman-11, Nanophoton, excitation wavelength is 532 nm) and FT-IR spectroscopy (Vertex 70, Bruker) equipped with microscope (Hyperion 1000, Bruker). The reflectance spectra of the structural colour before and after thermal treatment were measured by using FT-IR spectroscopy (Vertex 70, Bruker) equipped with microscope (Hyperion 1000, Bruker). Structural colour of the HSQ microstructure was recorded by employing a charge coupled device (CCD) camera (Beijing Groupca Company) equipped on an optical microscope under reflection mode. The absorption spectrum of the HSQ film on quartz was recorded on a UV-Visible Spectrophotometer (UV-2550, Shimadzu).
4
Spectroscopic Analysis of Organic Compounds
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All starting materials were purchased from Merck and used without purification. NMR spectra were determined with Varian Mercury VX-400” (Varian Co., Palo Alto, CA, USA) and AM-300 Bruker 300 MHz. spectrometers in DMSO-d6. MS (ESI) spectra were recorded on an LC-MS system-HPLC Agilent 1100 (Agilent Technologies Inc., Santa, Clara, CA USA) equipped with a diode array detector Agilent LC\MSD SL. Parameters of analysis: Zorbax SB-C18 column (1.8 μM, 4.6–15 mm, PN 821975-932), solvent water–acetonitrile mixture (95:5), 0.1% of aqueous trifluoroacetic acid; eluent flow 3 mL min–1; injection volume 1 μL; IR spectra were recorded on a Vertex 70 Bruker” (Bruker, Karlsruhe, Germany) spectrometer in KBr pellets. Melting points were determined in open capillary tubes and are uncorrected.
5
Freeze-Drying and FTIR Analysis
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The gels were rapidly frozen with liquid nitrogen and were allowed to freeze-dry for 24 h using a FD-1C-50 Freeze Dryer (Beijing Boyikang Laboratory Instruments Co., Ltd., Beijing China). IR spectra of xerogel were recorded on a VERTEX 70 Bruker spectrophotometer with KBr pellets in the 400–4000 cm−1 region.
6
Comprehensive Characterization of Compounds
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Elemental analyses for C, H, and N were performed on a Perkin-Elmer 240C analyser at the ISCN (Gif sur Yvette, France).
FTIR spectroscopic data were carried out on a Vertex 70 Bruker instrument working in the ATR mode and collected in the 400–4000 cm−1 range at room temperature (with a 4 cm−1 resolution).
Solid-state UV-vis spectra were measured in the range of 350–1200 nm on a CARY 5000 double-beam spectrophotometer equipped with the Eurolabo variable-temperature cell (21525, quartz windows) and Specac temperature controller. The measurements were performed on KBr pellets. ~2 mg of fresh crystallites of compounds were dispersed without any grinding in ca. 99 mg of KBr, this latter being previously ground. This sample preparation aimed at minimizing the formation of crystalline defects that could alter the SCO characteristics.
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7
FTIR Structural Analysis of Materials
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The structural features of the materials were evaluated primarily by Fourier Transform Infrared (FTIR) measurements using a Vertex 70 Bruker FTIR spectrometer equipped with an attenuated total reflectance (ATR) cell with Ge crystal. In all cases, the FTIR spectra were recorded at room temperature using 32 scans in wavelengths ranging from 600–4000 cm−1, 4 cm−1 resolution.
8
Vibrational IR and VCD Spectra of Indanol Enantiomers
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The vibrational IR absorption and VCD spectra were measured using a FTIR spectrometer Vertex 70 equipped with a VCD module PMA 50 (Bruker), at a spectral resolution of 4 cm -1 . The IR radiation, filtered by a low-pass filter cutting at 2000 cm -1 , then polarised with a linear polariser, was modulated by a 50 kHz ZnSe photo-elastic modulator (Hinds). The signal was measured by a MCT IR detector with a BaF 2 window, cooled with liquid nitrogen. The output of the MCT detector was demodulated using a lock-in amplifier (Stanford Research Systems SR 830). The spectra were measured using ~1.1 M solutions in an adjustable cell (Harricks) with a path length of 110 μm and 156 μm. The position of the cell was adjusted by rotating it to minimise its linear dichroism. The alignment was then verified by checking the mirrorimage relation between the VCD spectra of the two enantiomers of camphor (0.3 M in CCl 4 ) in the same cell as used here. The acquisition time was 8h. The spectra shown below are the half difference of those of the two enantiomers. They were recorded in two different cells to ensure reproducibility. The DMSO-d6 solvent and the enantiopure (1S,2S)-(+)-trans-1-amino-2-indanol and (1R,2R)-(-)-trans-1-amino-2-indanol were purchased by Aldrich and used without further purification.
9
Characterization of Natural Products
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Optical rotations were determined with a Perkin-Elmer 41 polarimeter equipped with a sodium lamp (589 nm). UV, CD, and FT-IR spectra were performed on a Varian Cary 50, a JASCO-810 CD spectrometer, and a Bruker Vertex 70 instruments, respectively. 1D and 2D NMR spectra were recorded on a Bruker AM-400 spectrometer, and the 1H and 13C NMR chemical shifts were referenced with respect to the solvent or solvent impurity peaks. HRESIMS were carried out in the positive ion mode on a Thermo Fisher LC-LTQ-Orbitrap XL spectrometer. X-ray data were collected using a Bruker APEX DUO instrument. Column chromatography was conducted with silica gel (200–300 and 300–400 mesh; Qingdao Marine Chemical Inc., China), Sephadex LH-20 (GE Healthcare Bio-Sciences AB, Sweden), and MCI gel (75–150 μm, Mitsubishi Chemical Corporation, Tokyo, Japan). Semi-preparative HPLC was carried out on a Dionex quaternary system with a diode array detector at a flow rate of 2.5 mL/min using a reversed-phased C18 column (5 μm, 10 × 250 mm, YMC-pack ODS-A).Thin-layer chromatography (TLC) was performed with silica gel 60 F254 (Yantai Chemical Industry Research Institute) and RP-C18 F254 plates (Merck, Germany).
10
FT-IR Spectroscopy of Samples
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The FT-IR spectra were recorded using a Bruker Vertex 70 spectrometer (Bruker Optik GmbH, Rosenheim, Germany) equipped with a Platinium ATR unit, Bruker Diamond A225/Q.1., at room temperature (4000–400 cm−1) with a nominal resolution of 4 cm−1 with 64 scans.
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