Controlling triplet-pair formation in acene-bridged trimers through locally excited–charge-transfer state mixing

≃38.5% for TIPS-TAT). These findings establish a unifying framework in which the balance between multiexciton generation and exciplex emission in acene-bridged trimers is governed by the degree of LE-CT mixing. Tuning bridge energetics and LE-CT offsets enables deliberate routing of excited-state pathways toward efficient triplet production or bright exciplex emission, providing actionable design rules for next-generation singlet-fission and optoelectronic architectures.