Dynamical Behavior of Surface-Stabilized States of Ferroelectric Liquid Crystals in Electric Field Studied by Time-Resolved FT-IR Spectroscopy

Polarized IR spectra of resonance assisted hydrogen bond (RAHB) in 2-hydroxyazobenzenes

“…As shows already rich literature [1][2][3][4][5][6][7][8][9][10] the polarized IR spectra of liquid crystals (LCs) yield interesting information from the point of view of both the degree of ordering in mesophases and characteristics of particular vibrational modes. Moreover, in the case of liquid crystals there are possibilities to prepare oriented samples, and applying the polarized light, to measure the direction of the transition dipole moment [2].…”

Time-Resolved Fourier-Transform Infrared Spectroscopy on the Inter- and Intramolecular Orientational Dynamics in Ferroelectric Liquid Crystalline Dimers

“…Until recently, the molecular orientation has been followed as the changes in the intensity of IR bands, with the polarization of the incident beam being fixed [1][2][3][4][5][6]. The interpretation of these results is ambiguous because this procedure requires assumptions about the orientational distribution functions for different molecular segments and their tilting angles.…”

Significantly Enhanced Carbon Dioxide Capture by Anion-Functionalized Liquid Pillar[5]arene through Multiple-Site Interactions

“…The enhanced interaction between [P 66614 ]­[DCP5] and CO 2 was further investigated by FT-IR and NMR spectroscopies (Figure ). First, the CO asymmetrical stretching vibration of the carboxylic anion in [DCP5] appeared at 1602 cm –‑1 , 12 cm –1 lower than in [DC], which meant that [DCP5] had a more negative charge on the carboxylic anion than [DC], as shown in Figures a and S29. − Furthermore, after the uptake of CO 2 by [P 66614 ]­[DCP5], new peaks were produced at 161.25 and 126.31 ppm, which could be assigned to CO 2 chemical and physical absorptions, respectively (Figure b). On the other hand, after CO 2 absorption by [EMIM]­[DCP5], two new peaks were detected by 13 C NMR because of the presence of two chemisorption mechanisms, where the signal at 161.26 ppm was assigned to the CO 2 –carboxylate complex, and the signal at 158.81 ppm corresponded to the CO 2 –carbene complex (Figure S30).…”