Enhanced sensitivity of color/emission switching of fluorescein film by incorporation of polyoxometalate using HCl and NH3 gases as in situ stimuli†
Abstract
Highly transparent flexible tricomponent hybrid film, agarose–[P5W30O110]15−–fluorescein (AG–P5W30–FL), was successfully prepared by a facile hydrogel casting technique. Due to the incorporation of P5W30 this film displays enhanced sensitivity and reversibility of color and emission switching for HCl and NH3 gases.