Size-dependent blinking of molecular aggregate total emission
URI (for links/citations):http://iopscience.iop.org/article/10.1088/1742-6596/917/6/062051
V, V Savchenko
A, A Zimin
N, Yu Ignatova
S, P Polyutov
Институт нанотехнологий, спектроскопии и квантовой химии
Journal Name:Journal of Physics
Journal Quartile in Scopus:Q3
Journal Quartile in Web of Science:без квартиля
Bibliographic Citation:V, V Savchenko. Size-dependent blinking of molecular aggregate total emission [Текст] / V Savchenko V, A Zimin A, Yu Ignatova N, Kimberg V, F Gel’mukhanov, P Polyutov S // Journal of Physics: Conference Series. — 2017. — Т. 917.
Molecular aggregates are well known for their customizable optical properties. Vibronic coupling in monomers forming such aggregates offers rich opportunities for property tuning. We study generic molecular aggregate models of growing complexity (from a dimer up to a decamer) and report how vibronic coupling affects aggregate fluorescence intensity. The total aggregate fluorescence intensity is a measure sensitive to both vibronic coupling and Coulomb coupling between monomer transition densities. Using an exact diagonalization approach in the two-particle basis set, we show how the interplay between Coulomb and vibronic coupling affects aggregate fluorescence. Moreover, for H-aggregates we predict a periodic variation of the fluorescence intensity with aggregate size and show that vibronic interaction decreases the effect.