Abstract
The physicochemical properties of monomolecular layers of amphiphilic cation polymethine dyes (i.e., thia- and oxacarbocyanines) on the surface of a water subphase are studied along with the conditions of Langmuir-Blodgett (LB) film preparation. The area occupied by one dye molecule in the liquid-stretched and liquid-condensed states of a monolayer is determined. Based on a comparison of experimental and theoretically calculated areas, the nature of dye packing in monolayers is studied by means of molecular mechanics using data from conformation analysis. The spectral and luminescent properties of cationic polymethine dyes in various media are investigated. Excimer fluorescence is observed in LB films. The excimers in LB films are found to arise not from monomers but from dye dimers. A possible mechanism of their formation is considered.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
E. A. McArthur, J. M. Godbe, D. B. Tice, and E. A. Weiss, J. Phys. Chem. C 116, 6136 (2012).
I. V. Kurdyukova and A. A. Ishchenko, Russ. Chem. Rev. 81, 258 (2012).
L. M. Blinov, Sov. Phys. Usp. 31, 623 (1988).
H. Kuhn, D. Mobiuss, and H. Bucher, Physical Methods of Chemistry I (Wiley, New-York, 1972), p. 577.
A. A. Ishchenko, Russ. Chem. Rev. 60, 865 (1991).
F. Würthner, T. E. Kaiser, and C. R. Saha-Möller, Angew. Chem., Int. Ed. Engl. 50, 3376 (2011).
B. I. Shapiro, Nanotechnol. Russia 3, 139 (2008).
A. A. Ishchenko, Structure and Spectral Luminescent Properties of Polymethine Dyes (Naukova Dumka, Kiev, 1994) [in Russian].
L. V. Levshin and A. M. Saletskii, Luminescence and Its Measurements (Mosk. Gos. Univ., Moscow, 1989) [in Russian].
T. Clark, A Handbook of Computational Chemistry (Wiley, New York, 1985).
A. Adamson, The Physical Chemistry of Surfaces (Wiley, New York, 1976).
A. S. Davydov, Theory of Molecular Exitons (Nauka, Moscow, 1968; Plenum Press, Oxford, 1971).
R. Grigonis, N. A. Derevyanko, A. A. Ishchenko, and V. Sirutkaitis, Quantum Electron. 31, 1027 (2001).
Author information
Authors and Affiliations
Corresponding author
Additional information
Original Russian Text © N.Kh. Ibrayev, E.V. Seliverstova, A.R. Tenchurina, A.A. Ishchenko, A.Yu. Shargaeva, 2013, published in Zhurnal Fizicheskoi Khimii, 2013, Vol. 87, No. 12, pp. 2125–2132.
Rights and permissions
About this article
Cite this article
Ibrayev, N.K., Seliverstova, E.V., Tenchurina, A.R. et al. Structure and physicochemical properties of cation polymethine dyes in Langmuir-Blodgett films. Russ. J. Phys. Chem. 87, 2082–2088 (2013). https://doi.org/10.1134/S0036024413120091
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S0036024413120091