Distinct changes of Debye relaxation in primary and secondary monoalcohols by carbon nano-dots

Si, O-Codoped Carbonized Polymer Dots with High Chemiresistive Gas Sensing Performance at Room Temperature

“…The functional groups present on the surface of the Si, O-CPDs were further characterized by FTIR. As Figure A shows, several main absorption peaks can be identified as the O–H stretching vibrations at 3442.7 cm –1 , the characteristic Si–O stretching vibrations at 794.6 cm –1 , the characteristic absorption peak of Si–H at 968.2 cm –1 , and the CO stretching vibrations at 1635.5 cm –1 . The typical Si–O–Si asymmetric stretching peak was observed at 1105.1 cm –1 . ,, Additionally, XPS measurement was also utilized to analyze the elemental composition and the type of functional groups of the surface of Si, O-CPDs.…”

Unusual Debye relaxation in 4-methyl-2-pentanol evidenced by high-pressure dielectric studies

“…The studies of the Debye relaxation have been extensively performed in supercooled liquids using various strategies such as elevating pressure, confinements and mixing [23][24][25][26], and new recognition and understanding is greatly enhanced [27][28][29][30][31]. In earlier dielectric studies of two typical monoalcohols, one being primary 2-ethyl-1-hexanol (2E1H) and the other secondary 4-methyl-3-heptanol (4M3H), it is found that the two key ratios of the relaxation strength and relaxation time between the Debye and structural dynamics at high pressure, Δε D /Δε α and τ D /τ α are correlated inversely [32][33][34][35].…”