@article{Verbitsky2026Tunable,
  author = {Verbitsky, A.B. and Piryatinski, Yu.P. and Kachkovskyy, O.D. and Yatsun, O.V. and Maiko, K.O. and Rozhin, A.G. and Lutsyk, P.M.},
  title = {Tunable emission of indotetracarbocyanine dyes due to solvate variation and interaction with carbon nanotubes},
  journal = {Semiconductor Physics, Quantum Electronics \& Optoelectronics},
  year = {2026},
  volume = {29},
  number = {2},
  pages = {180--190},
  doi = {10.15407/spqeo29.02.180},
  url = {https://doi.org/10.15407/spqeo29.02.180},
  abstract = {Indotetracarbocyanines belong to a family of long cyanine dyes that easily change molecular shape from symmetric cyanine-like to asymmetric polyene state. Multiple factors affect the conformations of such molecules and therefore influence their photoluminescent emission. In this paper, we investigated the photophysical behavior of indotetracarbocyanine dyes in various solvent environments and in mixtures with single-walled carbon nanotubes. The results revealed concentration-, aging-, and solvent-polarity dependent spectral features of such dyes, allowing us to establish key mechanisms for emission tuning. The spectral changes have been associated with symmetry-dependent molecular conformations of indotetracarbocyanines and their ability to interact with carbon nanotube surfaces. New emission bands emerge in the photoluminescence spectra due to dye-nanotube interactions, mediated by π–π stacking and electrostatic effects. This behavior is consistent with adsorption-induced aggregation of the dye on the nanotube surface and with the formation of new photoinduced emitting states.},
  keywords = {cyanine dyes, carbon nanotubes, photoluminescence, fluorescence, cyanine and polyene states, solution aging}
}