Studies on the Syntheses and Optical Properties of Trans-1, 2-bis [2-(5-substituted phenyloxazolyl)] cyclopropane

Eight of trans-1,2-bis[2-(5-substituted phenyloxazolyl)]cyclopropane and two of 1,2-bis[2-(5-substituted phenyloxazolyl)]ethane were synthesized. Nine of them are new compounds. Therelationships between the respective structures of these compounds and their corresponding electronicspectra,flourescence quantum yields were discussed. The conjugations between cyclopropane ring andoxazole rings were found and the reason why these compounds have low fluorescence quantum yieldswas explicated.