An ambipolar BODIPY derivative for a white exciplex OLED and cholesteric liquid crystal laser toward multifunctional devices

A new interface engineering method is demonstrated for the preparation of an efficient white organic light-emitting diode (WOLED) by embedding an ultrathin layer of the novel ambipolar red emissive compound 4,4-difluoro-2,6-di(4-hexylthiopen-2-yl)-1,3,5,7,8-pentamethyl-4-bora-3a,4a-diaza-s-indacene (bThBODIPY) in the exciplex formation region. The compound shows a hole and electron mobility of 3.3 × 10–4 and 2 × 10–4 cm2 V–1 s–1, respectively, at electric fields higher than 5.3 × 105 V cm–1. The resulting WOLED exhibited a maximum luminance of 6579 cd m–2 with CIE 1931 color coordinates (0.39; 0.35). The bThBODIPY dye is also demonstrated to be an effective laser dye for a cholesteric liquid crystal (ChLC) laser. New construction of the ChLC laser, by which a flat capillary with an optically isotropic dye solution is sandwiched between two dye-free ChLC cells, provides photonic lasing at a wavelength well matched with that of a dye-doped planar ChLC cell

Structural and functional state of the erythrocytes, ligand forms of haemoglobin and content of molecules of middle mass in blood plasma of patients with schizophrenia disorders

Stability of the erythrocyte membranes, content of the ligand forms of haemoglobin, parameters of the electronic spectra of haemoglobin complexes in patients with psychic disorders have been compared with the same indicators in healthy peoples. Patients with paranoid schizophrenia disorders, with some disorder symptoms and with psychic disorders caused by alcoholism, were under study. It has been shown that the erythrocytes of peoples with schizophrenia disorder manifest non-equivalent stability to haemolysis. Change in the ratio of haemoglobin ligand forms in patients with schizophrenia disorders have been found, in particular, the increase in the SHb and MetHb ratio, content of middle mass molecules in the blood plasma was detected. The method of optical spectroscopy has been proposed for studing of the haemoglobin conformation states in patients with schizophrenia disorders

Recollections of Professor Yuriy Reznikov

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