Indolyl-substituted carbazole derivatives: Electrochemical and photophysical properties and computational studies

ABSTRACT

A series of new indolyl-substituted carbazole derivatives were synthesized and their properties were studied. All the final compounds form molecular glasses. They absorb electromagnetic radiation in the range of 200–400 nm and emit in the range of 420–600 nm. The electrochemical properties of the derivatives were found to be determined by the nitro group attached to indole moiety. Relaxation dynamics of transient absorption spectra clearly indicates charge transfer state formation in the solid sample of 5-nitro substituted indolylcarbazole derivative.

KEYWORDS:

• Fischer indolization
• density functional theory
• ultrafast relaxation dynamics
• charge transfer

Acknowledgment

This research was funded by a grant (No. MTEPI-P-16025) from the R&D and Innovation Fund of Kaunas University of Technology.

Notes

[i] Cardona, C. M., Li, W., Kaifer, A. E., Stockdale, D., Bazan, G. C. (2011). Adv. Mater., 23, 2367.

[ii] Rybakiewicz, R., Gawrys, P., Tsikritzis, D., Emmanouil, K., Kennou, S., Zagorska, M., Pron, A. (2013). Electrochim. Acta, 96, 13.

1 Cardona, C. M., Li, W., Kaifer, A. E., Stockdale, D., Bazan, G. C. (2011). Adv. Mater., 23, 2367.

2 Rybakiewicz, R., Gawrys, P., Tsikritzis, D., Emmanouil, K., Kennou, S., Zagorska, M., Pron, A. (2013). Electrochim. Acta, 96, 13.