摘要:
                                Structural isomers of unsymmetric polycyclicphenazine-type D-pi-A fluorescent dyes have been newly synthesized and characterized in both solution and polymer films. The dyes exhibited two strong absorption bands at around 328-401 rim and 516-532 nm, and an intense fluorescence band at around 595-629 nm (phi = 0.32-0.84) in 1,4-dioxane. The dye-doped polymer films showed good ability of wavelength conversion; the films can efficiently convert ultraviolet and green-yellow lights into red light (phi=0.43-0.86). Moreover, the photostability of the dyes-doped PS. PMMA. and PLA films has been investigated. (C) 2011 Elsevier B.V. All rights reserved.