Fig. 4 | Nature Communications

Fig. 4

From: A three-dimensional ratiometric sensing strategy on unimolecular fluorescence–thermally activated delayed fluorescence dual emission

Fig. 4

Correlation of wavelength and lifetime of TADF and FL with polarity. a Emission spectra of 3 in various solvents under ambient condition (λex = 300 nm) and the photographs of 3 under UV light (365 nm). b Linear-fitting curves of the log value of wavelength and lifetime ratio (TADF to FL) with polarity change separately, as well as the formation of a 3-D plot diagram accordingly. c PL lifetime of FL and TADF bands in different solvents. FL, fluorescence; PL, photoluminescence; TADF, thermally activated delayed fluorescence

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