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Beilstein J. Org. Chem. 2019, 15, 733–745, doi:10.3762/bjoc.15.69
Graphical Abstract
Figure 1: Absorption spectra in the UV and visible spectral region: 1) bis(cyclopentadienyl)titan dichloride (...
Figure 2: Absorption spectra in the visible spectral region: 1) Cp2TiCl2·AlEt2Cl (toluene, 10 mmol/L, Ti/Al r...
Figure 3: 1Н NMR spectra of tricyclopentadiene (a) and the interaction product between Cp2TiCl2 and AlEt2Cl w...
Scheme 1: Mechanism of alkylation of Cp2TiCl2.
Figure 4: Visible spectra of a mixture of Cp2TiCl2 and AlEt2Cl as function of time.
Figure 5: Thermometric curve of DCPD polymerization using the catalyst system based on Cp2TiCl2 (a) and its s...
Scheme 2: The structures formed as a result of the cationic polymerization of dicyclopentadiene.
Scheme 3: The units resulting from ROMP of dicyclopentadiene.
Scheme 4: Mechanism of ROMP dicyclopentadiene.
Figure 6: FTIR spectrum of PDCPD obtained in toluene with the catalyst system based on Cp2TiCl2 and AlEt2Cl.
Figure 7: 1Н NMR spectrum of PDCPD obtained with the catalytic system based on Cp2TiCl2 and AlEt2Cl.
Figure 8: GPC traces for two samples of DCPD polymers obtained at a concentration of Cp2TiCl2/AlEt2Cl complex...
Figure 9: IR spectra of cationic polymerized dicyclopentadiene taken after certain periods of time exposed to...
Figure 10: Correlation of intensities of vibrational bands at 1620 and 700 cm−1 and layer exposure time in air...
Figure 11: DSC exotherm for PDCPD subjected to air oxidation for 700 hours.
Figure 12: DSC exotherm for PDCPD subjected to unexposed film: 1) in air atmosphere; 2) in argon.
Scheme 5: Possible radical formation in the reaction (1).
Scheme 6: The first step of the chain propagation.
Figure 13: Dependence of intensities of adsorption bands at 1410 and 700 cm−1 and dwell time of the layer in a...
Figure 14: Semi-logarithmic kinetic curve of PDCPD oxidation in air (thin layer on silicon) with respect to in...
Figure 15: The distribution of oxygen concentration in the polymer layer: 1 – a layer of oxidized cross-linked...
Figure 16: Dependence of the ratio of adsorption bands at 1700 and 700 cm−1 on the exposure time of the layer ...
Figure 17: Infrared spectra (a) of products of cationic polymerization of DCPD, stabilized with an antioxidant...