Once the PPV block is obtained, it can be modified to attach the C60 block. This can be achieved through various techniques, including "click chemistry," in which functional groups (e.g., azides and alkenes) are introduced to the PPV block, and then C60 molecules with complementary functional groups are attached to form the donor-acceptor diblock copolymer.
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2,5-di(2'-ethylhexyloxy)-4-methylbenzaldehyde
