Fluorescence properties of 4-amino salicylic acid in polymers
K Suyal, NK Joshi, R Rautela, HC Joshi… - Journal of Photochemistry …, 2010 - Elsevier
In this manuscript we report spectral and photophysical parameters of 4-amino salicylic acid
in protic polar and less polar aprotic polymer matrices. Dual emission is observed in both the
polymers. The band appearing at longer wavelengths (B band) is attributed to excited state
intramolecular proton transfer (ESIPT) whereas the band around 330nm (U band) is due to
those conformers, which fail to undergo ESIPT. We attribute the difference in spectral
behaviour in these polymers to the simultaneous presence of different neutral/ionic species …
in protic polar and less polar aprotic polymer matrices. Dual emission is observed in both the
polymers. The band appearing at longer wavelengths (B band) is attributed to excited state
intramolecular proton transfer (ESIPT) whereas the band around 330nm (U band) is due to
those conformers, which fail to undergo ESIPT. We attribute the difference in spectral
behaviour in these polymers to the simultaneous presence of different neutral/ionic species …
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