Convenient large-area construction of flexible multicolor polymer-based room temperature phosphorescence materials with second-scale phosphorescence lifetimes

-VBC) as an energy donor and commercially available fluorescent dyes as energy acceptors, multicolor RTP materials are facilely prepared through a phosphorescence Förster resonance energy transfer strategy. Notably, flexible multicolor RTP films with high transparency and long RTP lifetime are conveniently fabricated over large areas by doping the multicolor RTP materials into sodium alginate matrices with trace amounts of poly(vinyl alcohol) as a regulator. Furthermore, the prepared multicolor ultralong RTP materials demonstrate significant potential for advanced applications in the fields of information encryption and flexible display.