The exciton, an excited electron–hole pair bound by Coulomb attraction, plays a key role in
photophysics of organic molecules and drives practically important phenomena such as …

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

Coherence phenomena arise from interference, or the addition, of wave-like amplitudes with
fixed phase differences. Although coherence has been shown to yield transformative ways …

The field of organic photovoltaics has developed rapidly over the last 2 decades, and small
solar cells with power conversion efficiencies of 13% have been demonstrated. Light …

Easily processed materials with the ability to transport excitons over length scales of more
than 100 nanometers are highly desirable for a range of light-harvesting and optoelectronic …

Aggregates of conjugated polymers exhibit two classes of fundamental electronic
interactions: those occurring within a given chain and those occurring between chains. The …

Efficient transport of excitation energy over long distances is a key process in light-
harvesting systems, as well as in molecular electronics,,. However, in synthetic disordered …

The treatment of high‐dimensional problems such as the Schrödinger equation can be
approached by concepts of tensor product approximation. We present general techniques …

Coherence refers to correlations in waves. Because matter has a wave-particle nature, it is
unsurprising that coherence has deep connections with the most contemporary issues in …

Chemical reactions typically proceed via stochastic encounters between reactants. Going
beyond this paradigm, we combined exactly two atoms in a single, controlled reaction. The …