Dinitrobenzene sensing utilizing chitosan-based thin films optical fluorescence sensors via linear and nonlinear excitation

摘要: We presented here the findings of linear and nonlinear excitation an optical fluorescence sensor enhanced with chitosan-based thin films coated on tapered fiber for detecting dinitrobenzene solution compound. The absorbance peak at 441.2 nm shows a small shift to from 540.8 541.3 when 0.003g/ml was diluted in acetone. Time resolved resulting decreasing intensities recorded both excitation. Both showed agreement quenching up 30% its initial due free electron transfer chitosan film dinitrobenzene. Nonlinear gives more rapid time-resolved florescence after 4 minutes compared 6