Fluorescence enhancement of 6-aminoisoquinoline and its application in white light film
Organic light-emitting diode(OLED)has important applications in the next generation of lighting,displays and related fields.Blue fluorescent dyes are essential for the fabrication of OLED.In this study,by protonating a blue fluorescent dye 6-aminoisoquinoline(6-AIQ)with benzenesulfonic acid(BSA),the fluorescence quantum yield was successfully increased from 64.71%to 85.84%.The 6-AIQ-BSA was further inserted into a barrel-shaped hydroxypropyl-β-cyclodextrin(HP-β-CD)molecule to form a supramolecular structure,which could reduce the fluorescence quenching at high concentrations.Experiments showed that white light emission could be achieved by mixing the 6-AIQ-BSA@HP-β-CD with orange light dye DAST@HP-β-CD in a ratio of 1.7 to 1,and its CIE color coordinates were(0.3324,0.3284).The prepared film has the characteristics of good white light emission,lightweight,and flexibility,which makes it has broad application potential in various light-emitting devices.
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