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Chitosan thin films, coated on a quartz plate surface, containing pyrene (Py) and β-cyclodextrin (β-CD) units on their surfaces have been designed and prepared as novel sensing materials for nitromethane. Fluorescence studies revealed that the immobilized Py was included in the cavity of its neighbor β-CD. This structure makes the fluorescence emission of the films could not be quenched by commonly...
A novel nitrite sensing film has been prepared by chemical immobilization of pyrene (Py) onto an aminiated quartz plate surface. Fluorescence excitation and emission measurements and fluorescence quenching studies demonstrated that the immobilized fluorophore, Py, exists mainly in isolated state, rather than aggregated state. The profile and intensity of the emission of the plate are hardly affected...
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