A composition comprising (a) an effective amount of a guest chromophore embedded in a matrix of a host chromophore, or (b) a host chromophore and an effective amount of a guest chromophore both embedded in a polymer matrix, wherein the absorption spectrum of the guest chromophore overlaps with the fluorescence emission spectrum of the host chromophore, and wherein the host chromophore is selected from the group consisting of benzo [4,5]imidazo [2,1 -a]isoindol-11-ones.
一种组合物,包括(a)嵌入在主色团基质中的客体色团的有效量,或(b)主色团和嵌入在聚合物基质中的客体色团的有效量,其中客体色团的吸收光谱与主色团的荧光发射光谱重叠,并且所述主色团选自苯并[4,5]
咪唑[2,1-a]异
吲哚-11-酮组。