Abstract
Quinoidal π-extended dipyranylidene derivatives, 2,2',6,6'-tetraphenyl-2,2'-p-quinobis(4,4'-dipyranylidene) (DP8) and its tetrakis(dimethylamino) derivative (DP9), were newly synthesized and characterized. DP8, with the HOMO energy level (EHOMO) of −4.2 eV, was isolated as a...
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