D–π–A type conjugated indandione derivatives: ultrafast broadband nonlinear absorption responses and transient dynamics

Abstract

In the red region (650–800 nm), the nonlinear absorption of trithiophene-based compound INT3 is greater than that of triphenylamine-based compound INB3, while in the NIR region (800–1100 nm), the strength of nonlinear absorption is the opposite.

Charge-Transfer Luminescence in a Molecular Donor–Acceptor Complex: Computational Insights

“…Understanding atomistic and molecular structure–property relationships that can optimize interfacial charge-transfer processes − is important for the development of optoelectronic devices. The dynamics of CT can be studied using femtosecond transient absorption and time-resolved emission measurements. ,− The most successful and practical theory for understanding CT kinetics is the semiclassical Marcus theory . Remarkably, the CT kinetics depends on only four parameters: the Gibbs energy difference between the donor and acceptor, reorganization energy, electronic coupling between the donor and acceptor, and thermal temperature.…”