An order of magnitude modulation of singlet fission rates in NDI cyclophanes by tuning inter-chromophoric electronic coupling.

ABSTRACT: Singlet fission (SF) is a process of multi-exciton generation in molecular aggregates where two independent triplet states are formed via an intermediate correlated triplet-triplet ¹(TT) pair state. SF has been shown to occur within a minimal dimeric unit with chromophores having monomer triplet energies that are half the allowed bright singlet state energy. However, optimal singlet fission rates can only be derived if structural rules are formulated for tunable interchromophoric coupling between the two monomer units, which has remained a significant challenge in the community. In order to uncover the electronic nature of the dynamic ¹(TT) stabilization in generic supramolecular dimeric constructs, herein we have synthesized five new napthalene-diimde (NDI) cy

SUBMITTER: Mohanty A 

PROVIDER: S-EPMC12603651 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature