BENZOYLPERYLENEDICARBOXIMIDES - FUNCTIONAL DYES WITH ATTRACTIVE OPTICAL AND ELECTRONIC-PROPERTIES

Little is known about benzoylperleneimides 3. Two new syntheses of 3 h ave been worked out. based on boronic acid and organotin intermediates . respectively. These mild methods allow the isolation of the uncycliz ed precursor 10 and the introduction of various groups R. The purple b enzoylperyleneimides 3 are fluorescent dyes and exhibit a high thermal and photochemical stability. The electrochemical properties have been investigated showing that 3 can take up 2 electrons while 10 accepts 4 electrons due to the existence of two weakly interacting anyl units. (C) 1997 Elsevier Science Ltd.