Russian Physics Journal, Vol. 61, No. 2, June, 2018 (Russian Original No. 2, February, 2018)
ELEMENTARY PARTICLE PHYSICS AND FIELD THEORY
RADIATIONLESS ELECTRONIC EXCITATION ENERGY
TRANSFER BETWEEN MONOLAYERS OF J-AGGREGATES
T. M. Chmereva and M. G. Kucherenko UDC 535.373.2:538.971
Radiationless electronic excitation energy transfer between monolayers of cyanine dye molecules forming
J-aggregates by means of surface plasmons of the metal film of nanometer thickness inserted between the
monolayers is theoretically investigated. A dependence of the rate of energy transfer on the geometrical and
electrodynamic parameters of the system is established. It is demonstrated that the energy transfer between the
monolayers is more effective in the presence of the metal film than in a nonconductive medium.
Keywords: radiationless energy transfer, surface plasmon, J-aggregate, Frenkel exciton.
In connection with the development of nanotechnologies, the processes of electronic excitation energy
exchange between organic luminophore molecules began repeatedly attract attention of researchers, since operation of
many optoelectronic devices is based on the energy transfer. Recently the energy exchange between the molecules
combined in J-aggregates (JA) has been investigated experimentally and theoretically by representatives of different
natural-science directions. This is caused by prospects for JA application in the development of organic photovoltaic
elements  and light sources of new generation , because JA possess the unique properties, including narrow
spectral absorption and fluorescence lines and short lifetimes in comparison with radiation. In addition, a study of
model systems comprising JA of two types is important for understanding of the processes of energy transfer observed
in biological light-collecting complexes and also for the creation of systems with artificial photosynthesis .
Despite the complexity of observation of energy transfer between JA caused by small overlap of their
absorption and fluorescence spectra, it was reported that this process was registered in a number of experimental works.
Thus, in [4, 5] the energy transfer between the JA formed by molecules of different cyan dyes was observed in
a polymeric film. The energy transfer from one polymeric film with JA to another through a quartz plate was detected
by Nakajima et al. . In theoretical works, two main approaches to calculation of the rate of radiationless exciton
energy transfer from JA being the donor to JA-acceptor were used. The first approach was based on summation of rates
of energy transfer between individual molecules with different JA with allowance for delocalization of the molecular
excitation in each J-aggregate [7, 8]. In the second approach, it was considered that the energy is transferred by means
of virtual photons .
It is well known that metal nano-objects affect the rate of intermolecular radiationless energy transfer, because
in this case, the energy can be transferred not only by means of the dipole-dipole interaction between molecules, but
also by means of surface and localized plasmons [10, 11]. In the present work, a planar layered nanostructure is
considered consisting of the metal film with nanometer thickness placed in an optically neutral medium. In the
Orenburg State University, Orenburg, Russia, e-mail: firstname.lastname@example.org; clibph@ yandex.ru. Translate
from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 2, pp. 91–97, February, 2018. Original article submitted
September 18, 2017.
1064-8887/18/6102-0304 2018 Springer Science+Business Media, LLC