The Frster theory of resonance energy transfer and the basis for the FRET technique can be tested

The Förster theory of resonance energy transfer and the basis for the FRET technique can be tested by performing fluorescence measurements on a series of compounds in which an energy donor and an energy acceptor are covalently linked by a rigid molecular linker of variable and known length. L. Stryer and R.P. Haugland (Proc. Natl. Acad. Sci. USA 58, 719 (1967)) collected the following data on a family of compounds with the general composition dansyl-(l-prolyl)_n-naphthyl, in which the distance R between the naphthyl donor and the dansyl acceptor was varied from 1.2nm to 4.6nm by increasing the number of prolyl units in the linker:

Are the data described adequately by eqn 20G.10? If so, what is the value of R₀ for the naphthyl–dansyl pair?

Data in eqn 20G.10 

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1.5 1.8 2.8 3.1 3.4 3.7 4.0 4.3 4.6 0.99 0.94 0.97 0.82 0.74 0.65 0.40 0.28 0.24 0.16 R/nm 1.2 nT