The present invention describes compounds and uses thereof in applications relating to absorption of electromagnetic energy. Preferred compounds are double bond-containing cyclic compounds capable of absorbing electromagnetic radiation energy and having improved photostability due to the presence and location of one or more fluorine groups in relation to the double bond of the ring.本發明說明化合物及其在關於電磁能量吸收之應用中的用途。較佳化合物為含雙鍵的環狀化合物,其能夠吸收電磁輻射能量且由於相對於環之雙鍵的一或多個氟基的存在和位置而具有經改善的光穩定性。