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 …

Conspectus Progress in organic optoelectronics requires compounds possessing a suitable
combination of photophysical and electronic properties. Another key constraint …

The short exciton diffusion length associated with most classical organic semiconductors
used in organic photovoltaics (5-20 nm) imposes severe limits on the maximum size of the …

Photoinduced symmetry-breaking charge separation (SB-CS) processes offer the possibility
of harvesting solar energy by electron transfer between identical molecules. Here, we …

Symmetry breaking of the excited state of a linear quadrupolar acceptor–donor–acceptor
molecule was investigated using time-resolved infrared spectroscopy in 55 solvents …

The influence of the length of the push–pull branches of quadrupolar molecules on their
excited-state symmetry breaking was investigated using ultrafast time-resolved IR …

A significant number of quadrupolar dyes behave as their dipolar analogues when
photoexcited in polar environments. This is due to the occurrence of excited-state symmetry …

A thorough investigation has enabled the optimization of the synthesis of 1, 4-dihydro-
pyrrolo [3, 2-b] pyrroles. Although salts of such metals as vanadium, niobium, cerium, and …

A two-step route to strongly absorbing and efficiently orange to deep red fluorescent, doubly
B/N-doped, ladder-type pyrrolo [3, 2-b] pyrroles has been developed. We synthesize and …

Microscopic electric fields are increasingly found to play a pivotal role in catalysis of
enzymatic and chemical reactions. Currently, the vibrational Stark effect is the main …