The effect of orientation and distance between donor and acceptor molecules on the efficiency of singlet–singlet energy transfer in Langmuir–Blodgett films
- Авторлар: Seliverstova E.V.1, Ibrayev N.K.1
-
Мекемелер:
- Institute of Molecular Nanophotonics
- Шығарылым: Том 122, № 2 (2017)
- Беттер: 207-213
- Бөлім: Condensed-Matter Spectroscopy
- URL: https://bakhtiniada.ru/0030-400X/article/view/165321
- DOI: https://doi.org/10.1134/S0030400X17020242
- ID: 165321
Дәйексөз келтіру
Аннотация
Singlet–singlet energy transfer between molecules of fluorescein and oxazine dyes in Langmuir–Blodgett films is studied experimentally. The dependence of the energy-transfer efficiency on the distance shows that the quenching of the donor fluorescence is the most efficient when the layers of the donor and acceptor molecules are in a direct contact. An increase in the distance between the donor and acceptor layers leads to a decrease in the energy-transfer efficiency. To establish the mutual orientation of the donor and acceptor molecules, quantum-chemical calculations of the energy transfer process in the donor–acceptor pair are carried out. The calculations show that the best correlation of the experimental and calculated values of the energy-transfer efficiency is observed when the interacting particles are shifted relative to each other by about ~0.12 nm in parallel planes. The presented approach can be used to estimate the relative orientation of interacting particles in multimolecular ensembles.
Авторлар туралы
E. Seliverstova
Institute of Molecular Nanophotonics
Email: niazibrayev@mail.ru
Қазақстан, Karaganda, 100028
N. Ibrayev
Institute of Molecular Nanophotonics
Хат алмасуға жауапты Автор.
Email: niazibrayev@mail.ru
Қазақстан, Karaganda, 100028
Қосымша файлдар
