) is not correlated to an overall decrease in the absolute magnitude of 𝑘 !" . The anthracene bridge is notable in that, unlike other bridges, the DQI compounds exhibit relatively fast rates of singlet fission, though QI effects render them slower than the corresponding CQI compound. We have previously reported how the FMOs of the bridges impact the rates of SF, as observed in T-26A-T (𝜏 !" = 14 ps), P-26A-P (𝜏 !" = 48 ps), and others. As the FMOs of the bridging units approach resonance with those of the SF chromophores, the rates of triplet pair formation are enhanced. Here, we find that this concept can also be extended to DQI bridge connectivity, such that moving from P-13Ph-P → P-27N-P → P-27A-P yields an initial increase in 𝛕SF from 391 ps (Ph) to 882 ps (N) followed by a decrease to 253 ps (A). With these considerations in mind, it can be reasoned that bridge resonance effects have a stronger impact on the anthracene-bridged DQI chromophores. For example, the DQI chromophore P-27A-P undergoes faster iSF than P-13Ph-P, despite having a bridge that is longer by ~4.5 Å. Such a bridge resonance effect is even more pronounced in DQI tetracene analogs, where 𝜏 !" is reduced by a factor of 17 from 952 ps (27N) to 55 ps (27A). While CQI compounds still undergo faster iSF (48 ps for P-26A-P and 14 ps in T-26A-T) than their DQI counterparts (253 ps in P-27A-P and 55 ps in T-27A-T), the difference between these two connectivities is much less drastic than within the phenyl and naphthalene systems (Figure ).