Glass Formation and Vibrational Spectra of Glasses in the SrSO₄–KPO₃–Na₂B₄O₇System

Dielectric dispersion and spectroscopic investigations on Na2SO4–B2O3–P2O5 glasses mixed with low concentrations of TiO2

“…Out of these two ions, it is the [POO 2/2 O] − ion that interacts with sulfate ion and form SPO 7 3− (dithiophosphate) specie [22]. However there are some affirmative reports (based on Raman and NMR investigations) on sulfophosphate glasses suggesting that SO 4 2− species do not contribute to network formation and instead these groups participate in the depolymerization of the phosphate network similar to Ti 3+ and Na + ions [34].…”

“…Such weak and variable interaction between these two ions is expected to influence the electrical properties to a large extent. A considerable number of previous studies on a variety of physical properties of different alkali sulfophosphate glasses are available in the literature [6][7][8][9]. The introduction of B 2 O 3 to alkali sulfophosphate glasses is expected to increase the thermal stability of the glass network (since borate groups form M + [BO 4 ] − pairs) and also reported to increase the electrical conductivity [10][11][12][13].…”

Formation and structure of ionic (Na, Zn) sulfophosphate glasses

“…To our best knowledge, sulfophosphate glasses in the present sense have first been described by Arkhipov, Mamoshin et al in the early 1980s [15][16][17][18][19][20][21]. At that time, the material appears to have been studied primarily with respect to vitrification of sulfate-rich ashes.…”

Organic biomolecules bind to phosphate through borate linkages in aqueous solutions

“…The absence of the Q 2 band at 1167 cm −1 indicated that no P-O-P bonding was present. The broad band at 613 cm −1 and the new band at 744 cm −1 can be assigned to B-O-P vibrations 31,46 and those of the 5-membered borate ring, respectively.…”

“…The absence of the Q 2 band at 1167 cm −1 indicated that no P-O-P bonding was present. The broad band at 613 cm −1 and the new band at 744 cm −1 can be assigned to B-O-P vibrations 31,46 and those of the 5-membered borate ring, respectively. 30 The other bands observed at ∼920 cm −1 and 1889 cm −1 were assigned to ν a (PO 3 ) (Q 1 ) and C=O stretching of ascorbic acid.…”