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. Author manuscript; available in PMC: 2014 Mar 9.
Published in final edited form as: Biochim Biophys Acta. 2010 Sep 25;1807(1):157–164. doi: 10.1016/j.bbabio.2010.09.008

Fig. 5.

Fig. 5

(A) Temperature-dependent fluorescence emission spectra recorded at 300 to 77 K. Arrows indicate the narrowing of the bandwidth and the increase of the intensity. (B) A plot of the ratio of the fluorescence yields of the two emission peaks versus the reciprocal of temperature from 160 to 300 K; the solid red line is a linear fit of the data.