Naphthalimide-fused BODIPYs via one-pot quadruple C–H activation: ultra-low LUMO n-type semiconductors with efficient near-infrared emission

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= 2.003). Solution-processed organic field-effect transistors confirm n-type charge transport. This work establishes a concise, modular synthesis of NMI-fused BODIPYs with an unprecedented combination of ultralow LUMO levels, stable radical anions, and efficient NIR emission, providing a versatile platform for organic electronics and beyond.