Pustaka Ilmiah Universitas Padjadjaran

Abstrak

Three Novel Derivatives of 3-Phenylselanyl and 3-Phenyltellanyl BODIPY Derivatives as Candidates of Triplet Sensitizer

Three novel monosubstituted 3-phenylselanyl and 3-phenyltellanyl BODIPY derivatives were synthesized and their steady-state and transient absorption spectroscopic properties were used to evaluate the extent of intersystem crossing related to the heavy-atom effect of the Se and Te atoms. Compared to those of iodine and chlorine-atom containing analogues as well as an unsubstituted BODIPY derivative, their fluorescence quantum yields were found to decrease, whereas the intersystem crossing quantum yields (F), increased in the order of the H-> Cl -> Se/I?Te substitution. The maximum F, found for the 3phenyltellanyl derivative, was 59%. As the photostability of the selenium atom-containing derivatives was found relatively high, they could be considered as triplet sensitizers in various applications.