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. 2010 Jan 7;18(2):938–946. doi: 10.1364/OE.18.000938

Table 1. Calculated Stokes radius of fluorescent dye molecules.

Molecule Molecular weight (Da) Diffusion coefficient, D, in water (m2/s) Stokes radius, rs (nm)
Calcein 0.6k 3.3x10−10 (Yoshida 2000) 0.7
Dextran- tetramethylrhodamine 40k 4x10−11 (Peters 1984 for 62kDa Dextran molecules) 5.5

N. Yoshida, M. Tamura and M. Kinjo, Single Mol. 1(4), 279-283 (2000).
R. Peters, J. EMBO 3(8), 1831-1836 (1984).