Smart itr atr

Fourier transform infrared spectroscopy (FT-IR) and Fourier transform Raman spectroscopy (FT-Raman) evaluation of microencapsulated cornflower RP were performed as described previously [26 (link)].
FT-IR spectra were acquired in the range of 4000–650 cm⁻¹ (Nicolet 6700 FT-IR, Thermo Scientific, Madison, WI, USA) using a Smart iTR ATR sampling accessory. FT-Raman spectra (NXR FT Raman) were acquired on a Nicolet FT-IR stand with an InGaAs detector and a CaF2 beam splitter (Thermo Scientific, Madison, WI, USA). Before obtaining the spectra, the samples were irradiated with an Nd: YAG excitation laser operating at 1064 nm. The spectra were recorded in the range of 3500–150 cm⁻¹. Graphical presentation of spectra was performed using Origin Software Lab v8.5 Pro (Northampton, MA, USA).

Fourier transform
infrared (FTIR) spectroscopy was performed using a Smart iTR ATR sampling
accessory for a Nicolet iS10 spectrometer with a diamond crystal (Thermo
Scientific, Massachusetts). ¹H and ¹³C NMR spectra
were obtained on Varian 300 and 75 MHz NMR spectrometers, respectively,
in tubes with 5 mm outside diameters. CDCl₃ or DMSO-d₆ containing tetramethylsilane served as a solvent
and shift reference. Thin layer chromatography (TLC) plates were purchased
from Merck (Silica gel matrix coated with a fluorescent indicator
on aluminum plates).

A Nicolet iS10 FT-IR spectrometer (Thermo Fisher Scientific, Waltham, MA, USA) equipped with a Smart iTR™ ATR (Attenuated Total Reflectance) sampling accessory with a diamond as an ATR crystal was used to collect the vibrational spectra of powders. Spectra were collected with 4 cm⁻¹ resolution within the range 600–4000 cm⁻¹. Presented data represent an average of 64 scans for each sample.