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Table 2 Solvent effects on the position of absorption and fluorescence maxima of C-dots: spectroscopic polarity parameters in various aprotic solvents

From: Solvent effect on the absorption and emission spectra of carbon dots: evaluation of ground and excited state dipole moment

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

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BMC Chemistry

ISSN: 2661-801X

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