Efficiency of energy transport in luminescent molecular nanoclusters (j-aggregates)
Keywords:
molecular nanoclusters, J-aggregates, exciton transport, exciton trap, luminescence quenching, modified Stern-Volmer equation
Abstract
Using exciton trap (polymethine dye DiD) the efficiency of exciton energy transport in luminescent molecular nanoclusters (J-aggregates) of polymethine dye amphi-PIC has been investigated. It was shown that 50% of J-aggregates luminescence is quenched at the ratio amphi-PIC/DiD = 120, which points to effective energy transfer in the J-aggregates comparing with J-aggregates of another dyes. It was revealed that embedding of surfactant CPB leads to an increase in energy transfer efficiency due to suppression of localization processes in J-aggregates. In presence of CPB 50% of J-aggregates luminescence is quenched at the ratio amphi-PIC/DiD equal to 160.
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Harvesting Complexes // Intern. J. Photoenergy. – 2006. – Vol.2006. – article ID 20363, P. 1–21.
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complex from photosynthetic bacteria // Nature. – 1995. – Vol.374. – P. 517–521.
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Molecular Chains (J-aggregates) // Mol. Cryst. Liq. Cryst. – 1998. – Vol.324. – P. 267–273.
7. Malyukin Yu.V., Sorokin A.V., Lebedenko A.N. et al. Features of exciton transport in J-aggregates of
amphi-PIC // Funct. Mater. – 2005. – Vol.12,№1. – P. 64–68.
8. Tuszyński J.A., Jørgensen M.F., Möbius D. Mechanisms of exciton energy transfer in Scheibe aggregates
// Phys. Rev. E. – 1999. – Vol.59,№4. – P. 4374–4383.
9. Yonezawa Y., Yamaguchi A., Kometani N. Exciton delocalization of the J-aggregate of oxacyanine dye
and thiacyanine dye in LB films // Phys. Stat. Sol. (b). – 2005. – Vol.242,№4. – P. 803–806.
10. Lu L., Helgeson R., Jones R.M. et al. Superquenching in Cyanine Pendant Poly(L-lysine) Dyes:
Dependence on Molecular Weight, Solvent, and Aggregation // J. Am. Chem. Soc. – 2002. – Vol.124,№3.
– P. 483–488.
11. Dai Z., Dähne L., Donath E., Möhwald H. Mimicking Photosynthetic Two-Step Energy Transfer in
Cyanine Triads Assembled into Capsules // Langmuir. – 2002. – Vol.18,№12. – P. 4553–4555.
12. Lang E., Sorokin A., Drechsler M. et al. Optical Spectroscopy on Individual Amphi-PIC J-Aggregates //
Nano Lett. – 2005. – Vol.5,№12. – P. 2635–2640.
13. Malyukin Yu.V., Efimova S.L., Kemnitz K. Spectroscopy of intermolecular interaction in the system:
Dye–sodium dodecyl sulfate micelles // J. Lumin. – 2001. – Vol.94-95. – P. 239–242.
14. Лакович Дж. Основы флуоресцентной спектроскопии. Москва: Мир. – 1986. – 496 с.
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(c). – 2006. – Vol.3,№10. – P. 3386–3393.
16. Guralchuk G.Ya., Katrunov I.K., Grynyov R.S. et al. Anomalous Surfactant-Induced Enhancement of
Luminescence Quantum Yield of Cyanine Dye J-Aggregates // J. Phys. Chem. C. – 2008. – Vol.112,№38.
– P. 14762-14768
Published
2008-06-04
Cited
How to Cite
Grynyov, R. S., Sorokin, A. V., Guralchuk, G. Y., Yefimova, S. L., Borovoy, I. A., & Malyukin, Y. V. (2008). Efficiency of energy transport in luminescent molecular nanoclusters (j-aggregates). Biophysical Bulletin, 2(21), 101-106. Retrieved from https://periodicals.karazin.ua/biophysvisnyk/article/view/16805
Section
Methods of biophysical investigations
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