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

J-aggregates are fascinatingfluorescent nanomaterials formed by highly ordered assembly
of organic dyes with the spectroscopic properties dramatically different from that of single or …

The development of high-performance near-infrared organic light-emitting diodes is
hindered by strong non-radiative processes as governed by the energy gap law. Here, we …

Conspectus Designing bright and efficient near-infrared (NIR) emitters has drawn much
attention due to numerous applications ranging from biological imaging, medical therapy …

Realizing high photoluminescence quantum yield (PLQY) in the near‐infrared (NIR) region
is challenging and valuable for luminescent material, especially for thermally activated delay …

Achieving superradiance in solids is challenging due to fast dephasing processes from
inherent disorder and thermal fluctuations. Perovskite quantum dots (QDs) are an exciting …

Molecules that undergo singlet fission, converting singlet excitons into pairs of triplet
excitons, have potential as photovoltaic materials. The possible advantages of endothermic …

The primary questions motivating this report are: Are there ways to increase coherence and
delocalization of excitation among many molecules at moderate electronic coupling …

In contrast to regular J-and H-aggregates, thin film squaraine aggregates usually have
broad absorption spectra containing both J-and H-like features, which are favorable for …

Multidimensional spectroscopy at visible and infrared frequencies has opened a window
into the transfer of energy and quantum coherences at ultrafast time scales. For these …