Jnm ecz600r spectrometer

Attenuated total reflectance/Fourier transform infrared (ATR-FTIR) spectroscopy was performed using a Thermo Fisher Scientific Nicolet is10 infrared spectrometer with a scan range of 600–4000 cm⁻¹ over 16 scans.
¹H nuclear mangnetic resonance (¹H-NMR) was performed using an AVANCE-III-500 MHz spectrometer (Bruker, Switzerland) using deuterated acetone (C₃D₆O) as the solvent and tetramethylsilane (TMS) as the standard.
¹⁹F-NMR was performed using an AVANCE-NEO-400 MHz spectrometer (Bruker, Switzerland), and the standard was monofluorotrichloromethane (CFCl₃).
Solid-state ¹⁹F-NMR was performed using an JEOL JNM ECZ600R spectrometer (Japan), and the specific conditions were frequency of 564 MHz, pulse width of 90 deg and rotating speed of 21 kHz.

All the reactants, reagents, and solvents were obtained from commercial sources and used without further purification. Except where noted otherwise, the reactions were performed under an inert atmosphere of nitrogen gas using anhydrous solvents. The reactions were monitored using liquid chromatography–mass spectrometry (Agilent 1290 Infinity LC, Agilent 6120 quadrupole LC/MS, Agilent, Santa Clara, CA, USA). Flash chromatography was performed using the CombiFlash^® system (Teledyne Isco, St. Lincoln, NE, USA). All nuclear magnetic resonance spectra were collected using a 600 MHz JNM-ECZ600R spectrometer (JEOL, Akishima, Tokyo). Chemical shifts (d in ppm) in the ¹H spectra were reported relative to the residual solvent signals: 7.26 ppm for chloroform-d.

1D nuclear magnetic resonance (NMR) spectra were analyzed at 600 MHz (¹H-NMR) and 150 MHz (¹³C-NMR) using a JNM-ECZ600R spectrometer (JEOL, Tokyo, Japan). Samples were dissolved in deuterated methanol (CD₃OD) and dimethyl sulfoxide (DMSO-d₆). Chemical shifts are presented as ppm (parts per million) on the δ scale and coupling constants (J) are presented in Hertz.

FT‐IR spectra were recorded on a FT‐IR (Nicolet 5700, USA) using freeze‐dried hydrogel pellet (4000–500 cm⁻¹). The surface morphology investigation was carried out on a field emission scanning electron microscope (FE‐SEM, Hitachi S4800) and energy‐dispersive spectroscopy mapping (EDS, Bruker Nano XFlash Detector 5030). Before the FE‐SEM investigation, the samples were sputtered with gold. A Kratos AXIS‐SUPRA spectrometer was used to analyze the XPS (Zetasizer Nano S90) of the materials. Powder XRD measurements were performed using Cu Kα (λ = 0.154056 nm) radiation with a scan rate of 4° min⁻¹ and a step size of 0.03° in the 2θ range of 5° to 60°. The ¹H CP/MAS NMR spectra were measured on a JEOL JNM‐ECZ‐600R spectrometer. The specific surface area of the composite material was measured through nitrogen adsorption at 77 K using a Micromeritics ASAP 2040 Analyzer in the range of the relative pressures P/P₀ = 0.06–0.99 with a step of 0.015. Q500 equipment was used for TG analysis with a heating rate of 20 °C min⁻¹ from 35 to 800 °C in the air. The transmittance of the hydrogel was measured with a commercial tester (LS116, China) at a wavelength of 550 nm.