Thermal behavior of silver-containing mesogenic cyanobiphenyl films

The ESR-Study of Chemical Interactions in Triple Solid ‘Ag-CCl4-5CB’ Co-Condensate Mesogenic System

“…The specific interactions in the binary mesogenic silver -4-pentyl-4-cyanobiphenyl (Ag-5CB) system were studied by us previously [8,9]. It was shown that the formation of a paramagnetic p-complex of silver atoms ( 107 Ag and 109 Ag) with J ¼ 1=2, was revealed in the spectra as two doublet lines.…”

“…Condensation rates of the silver and cyanobiphenyl components were chosen at 5 Â 10 13 and 4 Â 10 15 molecule=cm 2 s values, respectively, in order to minimize metal atom aggregation. The condensation rate of CCl 4 was determined by the value of its saturated vapor pressure at a given temperature and was varied from 1 Â 10 14 to 1 Â 10 15 molecule=cm 2 s. The ESR-spectroscopic studies of the samples obtained in the temperature range 77-350 K were made in situ under vacuum conditions using a specially constructed cryostat supplied with reagent inlets and a vacuum moving connection [8]. The construction of this cryostat allows us to record ESR-spectra of the samples both during the cocondensation process and during the sample warm up to room temperature.…”

Molecular Organisation and Phase-Structural States of Hybrid Metal-Mesogenic Nanosystems Based on Alkylcyanobiphenyls and their Optical Properties

“…Морфо-логию наночастиц и наноструктур, формирующихся в гибридных металл-мезогенных наносистемах, изучили на примере серебра и мезогенных производных (5СВ, 8СВ), обладающих фазами с различной упорядоченностью и молекулярной организацией. Образцы получали путем совместной низкотемпературной соконденсации компонентов с последующим контролируемым отжигом образцов с различными скоростями нагрева и выдерживанием при определенной температуре [12][13][14]. Исследовали образцы с различной термической предысторией и в различных фазовых состояниях исследуемых систем.…”

Low-temperature reactions in the chemistry of nanosystems

“…Thermal behaviour of the metal-containing atom ± molecular systems based on co-condensates of silver and mesogenic cyanobiphenyl 5CB was investigated in the temperature range 80 ± 300 K. 233 At 80 K, the EPR spectra of the co-condensates exhibited well-resolved signals of hyperfine coupling (HFC) with the metal atoms. This indicates formation of complexes between silver atoms and mesogenic ligands under conditions of lowtemperature co-condensation.…”