Analytical Approximation of the Deconvolution of Strongly Overlapping Broad Fluorescence Bands

Comment on ‘temperature dependent spectroscopic and excited state dynamics of 3-hydroxychromones with electron donor and acceptor substituents’

“…We think that the extra component of band appear due to the bad fitting model based on symmetric Gaussian shapes. It is well known that the vibronic spectra of organic molecules have asymmetric shapes, namely, the emission spectral intensity increases slower in the region of the long wavelengths than in that of the short wavelength [2,12,14,[25][26][27]28]. The band asymmetry in the spectra of all compounds studied in the article is clearly observed in figures 2 and 3 presented in different x-scales, cm −1 and, respectively.…”

“…asymmetric sigmoidal functions (see ORIGIN packages and [26,27]). Smart fitting procedures based on the asymmetric double sigmoid functions (ASIGM) allowed us significantly reduce fitting errors [27][28][29].…”

“…In these cases a satisfactory accuracy of approximation may be achieved using asymmetric models, e.g. asymmetric sigmoidal functions (see ORIGIN packages and [26,27]). Smart fitting procedures based on the asymmetric double sigmoid functions (ASIGM) allowed us significantly reduce fitting errors [27][28][29].…”