Semiconductor Physics, Quantum Electronics & Optoelectronics. 2001. V. 4, N 3. P. 229-238.
Absorption spectra and chromonic phase in aqueous solution of perylenetetracarboxylic bisimides derivatives
P. Camorani 2, M. Furier, O. Kachkovskii 1, Yu. Piryatinskiy, Yu. Slominskii 1 and V. Nazarenko
Institute of Physics, NASU, 46 pr. Nauki, Kyiv 03039, Ukraine
Abstract. In this article we report the complex investigation of perylenetetracarboxylic bisimides derivatives in water solution. The results deal with all possible concentration in wide range of temperature. The experimentally observed of long wavelength maximums in absorption spectra with increasing of concentration can be attributed to decrease individual molecules of the dye and to the formation of aggregates. This fact is also responsible for the shift and form change of emission spectra.
Keywords: chromonic liquid crystal aggregate, fluorescence, absorption.
Paper received 26.06.01; revised manuscript received 04.07.01; accepted for publication 13.07.01.