On the Formation and ¹H NMR-spectroscopic Characterization of N,N-Diaryl-substituted Formamide Chlorides

Abstract

The reaction of N, N-diaryl-substituted formamides with oxalyl chloride gives rise, instead to the formation of the expected salt-like formamide chlorides, to the formation of corresponding non-ionic N-dichloromethyl-substituted diarylamines.

Side-Chain-Promoted Polymer Architecture Enabling Stable Mixed-Halide Perovskite Light-Emitting Diodes

“…The successful synthesis of the multifunctionalized polymer ligand was confirmed by total reflection Fourier transform infrared spectroscopy (ATR-FTIR) measurements (Figure S1). Typically, the original poly maleic-anhydride shows two characteristic bands of anhydride, including a weak absorption band around 1858 cm –1 and strong band near 1773 cm –1 assigned to symmetric and asymmetric C=O stretching. , After amidation, the anhydride signal significantly decreases and three intensive amide I, II, and III bands are exhibited at around 1705, 1590, and 1236 cm –1 , respectively. , Nuclear magnetic resonance (NMR) spectroscopy was also utilized to characterize the amination reactions (Figure S2), demonstrating distinct proton signals of the carboxyl group (∼12.12 ppm), amide α-H (2.9–3.6 ppm), and phenyl ring (7.15–7.42 ppm). − Figure S3 illustrates the comparison of ATR-FTIR spectra between pristine and PP-NCs. It is observed that no amide I peak is detected in the pristine NCs.…”