Open AccessVibrational spectroscopy of thin film condensates of ethanol mixture with inert gase
Author(s) -
A. Aldiyarov,
D. Sokolov,
Aliya Tychengulova,
D. Yerezhep
Publication year - 2021
Publication title -
vestnik. seriâ fizičeskaâ/habaršysy - a̋l-farabi atyndaġy k̦azak̦ memlekettik u̇lttyk̦ universitetì. fizika seriâsy
Language(s) - English
Resource type - Journals
eISSN - 2663-2276
pISSN - 1563-0315
DOI - 10.26577/rcph.2021.v78.i3.03
Subject(s) - inert , ethanol , inert gas , condensation , analytical chemistry (journal) , thin film , torr , nitrogen , substrate (aquarium) , chemistry , spectroscopy , molecule , infrared spectroscopy , phase (matter) , chemical engineering , materials science , chromatography , organic chemistry , thermodynamics , nanotechnology , physics , oceanography , quantum mechanics , geology , engineering
It is known that by changing the concentration in an inert medium, it is possible to form clusters of various sizes of any substance by condensing them on a cold substrate from the gas phase. Traditionally, such systems are presented by molecular cryocrystals. This paper demonstrates the results of IR spectrometric studies of cryovacuum condensates of ethanol mixture with nitrogen. The main task of this study is to explain the complex, most often, ambiguous behavior of thin films of ethanol cryovacuum condensates in the process of its cocondensation with nitrogen. For this purpose, vibrational spectroscopy of cryodeposited thin films of “ethanol in nitrogen” mixtures in various concentration ratios was performed. The objects of research are thin films of cryocondensates of ethanol mixture with inert gas (N2). The samples were condensed at the temperature T = 16 K. The pressure of the gas phase of the mixture during cryocondensation was kept at P = 105 Torr. The range of ethanol concentrations in the mixtures varied from 3% to 90%. The spectral range of measurements was considered in 400-4200 1/cm. It is assumed that the change in the concentration of ethanol in the mixture leads to the formation of various cluster compositions of ethanol molecules dissolved in an inert medium.