A theoretical study of the vibrational spectrum of maleimide

Biobased and Aromatic Reversible Thermoset Networks from Condensed Tannins via the Diels−Alder Reaction

“…Results obtained for sample XMT5 are given in Figure S7 in the SI, as a representative example. The DA reaction was confirmed by the disappearance of the furan ring characteristic signals: the out-of-plane bending of the C−H bond at 738 cm −1 and the stretching of the CC double-bond at 1459 cm −1 , as well as those of the maleimide ring; the ring bending at 694 cm −1 ; the C−H bond bending at 830 cm −1 ; and the CC double-bond stretching at 1639 cm −1 . Moreover, the cross-linked tannins combine both the stretching signals of O−H, C−H, CO, and CC bonds brought by the tannins and the cross-linker X3.…”

The role of vibronic coupling in the electronic spectroscopy of maleimide: a multi-mode and multi-state quantum dynamics study

“…See DOI: 10.1039/ d0cp04514d 1 1 A 2 (np*), 1 1 B 2 (pp*) and 2 1 B 2 (pp*). Regarding the vibrational spectrum of maleimide, more theoretical [18][19][20][21] and experimental data are available including infrared, [22][23][24] Raman 23,24 and inelastic neutron scattering spectroscopy. 24 To our knowledge there are no highly-resolved vapour phase absorption spectra published so far impeding a spectral mapping with vibronic simulations.…”

Comprehensive study of the thermo-reversibility of Diels–Alder based PCL polymer networks

“…Raman spectroscopy was found as a relevant method particularly well-suited to collect distinctive vibrational information on the three functional groups of interest, i.e. furan36 , maleimide37 and DA adduct38 in the PCL network. Moreover, Raman spectroscopy is also an efficient tool for quantitative analyses, since relative peak intensities of the diffusion bands of the chain-end groups are proportional to their relative concentration in the material, allowing the determination of the DA yield.…”