dry
Figure 2:(a) Raman spectra of dry samples of α-CDEDTA1n nanosponges (n = 2,4,6,8,10) after subtraction of the QE contribution in the energy range 0 ÷ 150 cm−1. (b) Estimated frequency position of the boson peak ωBP as a function of the parameter n for α-CDEDTA1n (cyan hexagons) and γ-CDEDTA1n (yellow triangles) nanosponges.