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. 2021 Sep 25;15(1):53. doi: 10.1186/s13065-021-00779-6

Table 2.

Solvent effects on the position of absorption and fluorescence maxima of C-dots: spectroscopic polarity parameters in various aprotic solvents

Solvents νa (kK) = 103 cm−1 νf (kK) νa − νf νa + νf f(ε,n) f(ε,n) + 2 g(n)
DMSO 35.77 21.92 13.84 57.70 0.841 1.660
Acetonitrile 35.71 22.19 13.51 57.91 0.862 1.533
DMF 35.21 22.22 12.98 57.43 0.839 1.606
DCM 35.58 22.47 13.11 58.05 0.597 1.353
Acetic Acid 35.46 22.57 12.88 58.03 0.497 1.200
Diethyl ether 36.49 22.72 13.76 59.22 0.382 1.054
Dioxane 35.58 22.88 12.70 58.47 0.045 0.801