The chitosan and CSSC polymers were investigated by employing infrared spectroscopy. Each sample was compressed into discs using potassium bromide (KBr). Each disc was scanned in the range of 4000 cm−1 to 400 cm−1 using a Thermo Scientific Nicolet IR 200 spectrometer (Thermo Scientific, Waltham, MA, USA) [27 (link)].
Nicolet ir 200 spectrometer
Manufactured by Thermo Fisher Scientific
Sourced in United States
The Nicolet IR 200 spectrometer is a laboratory instrument designed for infrared spectroscopy analysis. It is capable of measuring the absorption or transmittance of infrared light by a sample, providing information about the chemical composition and molecular structure of the material.
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Lab products found in correlation
5 protocols using nicolet ir 200 spectrometer
1
Infrared Spectroscopy of Chitosan and CSSC
2
Spectroelectrochemical Characterization of 1a and 2a
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The spectroelectrochemical
measurements of1a and 2a in anhydrous tetrahydrofuran
containing [NBu4][B(C6F5)4] (0.1 mol·L–1) as the supporting electrolyte
were performed at 25 °C in an optically transparent thin-layer
electrochemistry (OTTLE) cell87 (link) with quartz
windows (UV–vis/NIR, compounds1a and 2a ) by a Varian Cary 5000 spectrophotometer or CaF2 windows
(IR,1a ) with a Nicolet IR200 spectrometer (Thermo Fisher).
Between the spectroscopic measurements, the applied potentials were
increased stepwise using step heights of 25, 50, or 100 mV. At the
end of the measurements, the analyte was reduced at −500 mV vs Ag/AgCl for 30 min, and an additional spectrum was recorded
to prove the reversibility of the oxidations.
measurements of
containing [NBu4][B(C6F5)4] (0.1 mol·L–1) as the supporting electrolyte
were performed at 25 °C in an optically transparent thin-layer
electrochemistry (OTTLE) cell87 (link) with quartz
windows (UV–vis/NIR, compounds
(IR,
Between the spectroscopic measurements, the applied potentials were
increased stepwise using step heights of 25, 50, or 100 mV. At the
end of the measurements, the analyte was reduced at −500 mV vs Ag/AgCl for 30 min, and an additional spectrum was recorded
to prove the reversibility of the oxidations.
3
Characterization of Novel Organic Compounds
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Chemicals employed in the research work were purchased from Wako
and E. Merck and were used as received. Solvents were purified through
standard procedures before use. Fourier transform infrared (FT-IR)
spectroscopy spectra were scanned on a Thermo Nicolet IR 200 spectrometer,
while an LCQ Advantage Max Thermo Fisher instrument was used in the
ESI mode for mass spectra. 1H NMR spectra were recorded
on a Bruker AVANCE-III 400 MHz spectrometer using TMS as the internal
standard and 13C NMR spectra were recorded at 101 MHz.
Melting points were determined on a Gallenkamp instrument and are
uncorrected. For microwave-assisted reactions, a customized microwave
oven (Orient eNNe781JF) equipped with inverter technology (for realistic
control of the microwaves) operating at multiples of 100 W up to 1000
W generating 2450 MHz frequency was used. The temperature of the microwave-assisted
reactions was monitored by Redington 9975-IRT gun. Crystal data were
collected on a Bruker APEX 2 CCDD diffractometer using graphite-monochromated
Mo Kα radiation.
and E. Merck and were used as received. Solvents were purified through
standard procedures before use. Fourier transform infrared (FT-IR)
spectroscopy spectra were scanned on a Thermo Nicolet IR 200 spectrometer,
while an LCQ Advantage Max Thermo Fisher instrument was used in the
ESI mode for mass spectra. 1H NMR spectra were recorded
on a Bruker AVANCE-III 400 MHz spectrometer using TMS as the internal
standard and 13C NMR spectra were recorded at 101 MHz.
Melting points were determined on a Gallenkamp instrument and are
uncorrected. For microwave-assisted reactions, a customized microwave
oven (Orient eNNe781JF) equipped with inverter technology (for realistic
control of the microwaves) operating at multiples of 100 W up to 1000
W generating 2450 MHz frequency was used. The temperature of the microwave-assisted
reactions was monitored by Redington 9975-IRT gun. Crystal data were
collected on a Bruker APEX 2 CCDD diffractometer using graphite-monochromated
Mo Kα radiation.
4
Characterization of Optimized TEL-Loaded Beads
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The surface morphology of the optimized formulation was analyzed by SEM. The beads were attached to a stub using double-sided adhesive tape, and gold was encrusted under a vacuum in an ion sputter with a thin layer of 3–5 nm of gold for 75 s. The images were captured randomly using SEM at an acceleration voltage of 10 kV [40 (link)].
IR spectroscopy was used to investigate the probability of drug interaction with other substances in the manufactured TEL-loaded oil-entrapped beads [41 (link)]. Infrared spectroscopy was used to characterize the drug, sodium alginate, and the optimized formulation. Using a Thermo Scientific Nicolet IR 200 spectrometer, each sample was subjected to IR spectroscopy after being crushed into discs with potassium bromide (KBr). Every compressed sample was scanned between 4000 cm−1 to 400 cm−1.
IR spectroscopy was used to investigate the probability of drug interaction with other substances in the manufactured TEL-loaded oil-entrapped beads [41 (link)]. Infrared spectroscopy was used to characterize the drug, sodium alginate, and the optimized formulation. Using a Thermo Scientific Nicolet IR 200 spectrometer, each sample was subjected to IR spectroscopy after being crushed into discs with potassium bromide (KBr). Every compressed sample was scanned between 4000 cm−1 to 400 cm−1.
5
Fourier Transform Infrared Spectrometry
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Fourier transform infrared spectrometry was carried out using Thermo Fisher Scientific Nicolet IR200 spectrometer equipped with ATR accessory.
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