The electronic excited states of molecular aggregates and their photophysical signatures
have long fascinated spectroscopists and theoreticians alike since the advent of Frenkel …

Functional organic materials with enhanced two‐photon absorption lead to new
technologies in the fields of chemistry, biology, and photonics. In this article we review …

Access to excited-state structures and dynamics of π-chromophor aggregates is needed to
understand their fluorescence behavior and the properties of related materials. A quantum …

Exciton coherence in a J-aggregate with exciton− phonon coupling involving a single
intramolecular vibration is studied. For linear aggregates with no disorder and periodic …

Cycloparaphenylenes, the simplest structural unit of armchair carbon nanotubes, have
unique optoelectronic properties counterintuitive in the class of conjugated organic …

The temperature dependence of the exciton dynamics in a conjugated polymer is studied
using time-resolved spectroscopy. Photoluminescence decays were measured in …

The dynamics and mobility of excitons in J-aggregates of perylene bisimides are
investigated by transient absorption spectroscopy with a time resolution of 50 fs. The …

The 2D IR spectra of the amide-I vibrations of amyloid fibrils from Aβ40 were obtained. The
matured fibrils formed from strands having isotopic substitution by 13C 18O at Gly-38, Gly …

Charge transport is well understood in both highly ordered materials (band conduction) or
highly disordered ones (hop** conduction). In moderately disordered materials …

Describing long-range energy transport is a crucial step, both toward deepening our
knowledge on natural light-harvesting systems and toward develo** novel photoactive …