Electrooptical properties of liquid crystal n-pentil-n,-cyanobifenil with J-aggregates of astrofloxine
2001; National Academy of Sciences of Ukraine. Institute of Semi conductor physics.; Volume: 4; Issue: 4 Linguagem: Inglês
10.15407/spqeo4.04.375
ISSN1606-1365
Autores Tópico(s)Liquid Crystal Research Advancements
ResumoIt is shown that organic nanocrystallites J-aggregates can be formed and oriented in a liquid crystalline matrix.External electric field can reorient and destroy these nanocrystallites.Transmission and photoluminescence spectra of astrofloxine solutions in the nematic liquid crystal are investigated in d.c. and a.c.electric fields with the frequencies of 1 Hz1 kHz and amplitudes F = 1.2×10 4 V•cm -1 .Intense photoluminescence was observed at two-photon excitation.Efficiency of IR laser radiation transformation into visible photoluminescence was as high as 10%.
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