microcrystalline cellulose Cellulose 6 adsorption 6 article 6 cellulose 6 chemistry 6 water 6 Adsorption 4 Fluorescent Dyes 4 Hydrogen Bonding 4 Lasers 4 Light 4 Quantum Theory 4 Spectrometry, Fluorescence 4 Water 4 fluorescence 4 fluorescent dye 4 hydrogen bond 4 laser 4 light 4 priority journal 4 quantum theory 4 spectrofluorometry 4 6-hydroxy-3-xanthen-3-one 2 Cold Temperature 2 Eosine Yellowish-(YS) 2 Erythrosine 2 Fexofenadine hydrochloride 2 Fexofenadine photodegradation products 2 Fexofenadine photostability 2