The current commercially available yellow organic dyes are not stable enough to be used for remote phosphor LED applications. Therefore new yellow benzoxanthene dicarboximide dyes to convert blue light from LED into light of longer wavelengths were synthesized. The spectral properties of the dyes and their stability in PET films were examined. The compounds showed high photoluminescence quantum yield and above all superior photostability under operation conditions (10% reduction in photoluminescence at 450 nm irradiance of 0.016 W/cm² at 60 °C). With extrapolated lifetimes up to 27000 h, a huge improvement in stability was established when compared to the commercially available yellow dyes exhibiting lifetimes lower than 1000 h.

当前的市售黄色有机染料不够稳定，无法用于远程磷光体LED应用。因此，合成了新的黄色苯并氧杂蒽二甲酰亚胺染料，其将来自LED的蓝光转换为更长波长的光。检查了染料的光谱特性及其在PET膜中的稳定性。该化合物显示出高的光致发光量子产率，并且在操作条件下具有最优异的光稳定性（在60°C下于0.016 W / cm ^2的450 nm辐照度下，光致发光降低10％）。与推断寿命低于1000 h的市售黄色染料相比，推断寿命高达27000 h，稳定性得到了极大的改善。