2-amino-arenecarbaldehydes such as 2-aminobenzaldehyde, 2-aminonicotinealdehyde, 1-amino-2-naphthaldehyde, and 8-aminoquinoline-7-carbaldehyde. In addition to the absorption maxima based on the parent 9,9'-spirobifluorene skeleton in the 225–234, 239–280, 296–298, and 308–328 nm regions, the absorptions due to the π-π* transitions of the heterocycles were observed in the 351–375 nm region in the UV absorption spectra
通过 8,9-二氢螺(苯并[b]
芴-11,9'-
芴)-6(7H)-one 和 8,8 ',9,9'-四氢-11,11'-螺双(苯并[b]
芴)-6,6'(7H,7'H)-二酮与一系列2-
氨基-
芳烃甲醛如
2-氨基苯甲醛、2-
氨基
烟碱醛、1-
氨基-2-
萘醛和
8-氨基喹啉-7-
甲醛。除了基于母体
9,9'-螺二芴骨架在 225–234、239–280、296–298 和 308–328 nm 区域的吸收最大值之外,由于 π-π* 跃迁的吸收在紫外吸收光谱的 351-375 nm 区域观察到杂环。所有化合物在 390-430 nm 区域都显示出强烈的光致发光。