Nitrogen-Rich Polymers as Candidates for Energetic Applications

Energetic Polymer Possessing Furazan, 1,2,3-Triazole, and Nitramine Subunits

“…3.6 ppm (for comparison, see Supplementary Materials, 1 H MNR of 9). The 13 C NMR spectrum (see, Supplementary Materials) further confirms the conclusions made on the basis of FTIR and 1 H NMR. This spectrum of polymer 12 displayed the disappearance of characteristic alkyne moiety signals at δ ca.…”

“…The 13 C NMR spectrum confirmed the formation of the 1,2,3-triazole subunit with the appearance of the signal at 125.1 ppm (CH of the 1,5-isomer) and 133.9 ppm (CH of the 1,4-isomer) which is indicative of the heterocycle [56]. The 1 H and 13 C NMR shifts illustrated in Figure 2 and in Supplementary Materials also support the assignment of proton and carbon shifts in the polymer 12.…”

“…IR spectra were recorded on a BrukerALPHA instrument in KBr pellets. The 1 H, 13 C, and 14 N spectra were recorded on a Bruker AM-300 instrument (300.13, 75.47, and 21.69 MHz, respectively) at 299 K. The chemical shifts of 1 H and 13 C nuclei were reported relative to TMS, for 14 N-relative to MeNO 2 , high-filed chemical shifts are given with a minus sign. Elemental analysis was performed on a PerkinElmer 2400 Series II instrument.…”

“…All compounds are well characterized by IR, 1 H, 13 C, and 14 N NMR spectroscopic data as well as CHN analysis (see Supplementary Materials). The structure of dipropargyl ether 9 was unambiguously confirmed by X-ray crystallography (Figure 1, Supplementary Materials: Figures S1 and S2, Tables S1 and S2).…”

“…Back in the 1970s, it was shown that higher propellant efficiency indicators can be achieved if active oxygen is delivered not only by an oxidizer, but also contained in a binder, in a polymer, or plasticizer of which, for example, bears nitroxy groups [8][9][10]. The expediency of introducing high-enthalpy moieties into polymers, such as an azide group and other explosophoric units also became obvious [11][12][13][14][15][16][17].…”