Interaction of amino acids with cholesteric liquid crystals: spectrophotometric evidence

被引：2

作者：

Samoilov, A. N. ^{[1
]}

Minenko, S. S. ^{[1
]}

Mykytyuk, Z. M. ^{[2
]}

Lisetski, L. N. ^{[1
]}

机构：

[1] Natl Acad Sci Ukraine, STC Inst Single Crystals, Inst Scintillat Mat, 60 Nauky Ave, UA-61001 Kharkov, Ukraine

[2] Natl Univ Lviv Polytech, Dept Elect Devices, 12 S Bandery Str, UA-79013 Lvov, Ukraine

来源：

FUNCTIONAL MATERIALS | 2019年 / 26卷 / 02期

关键词：

liquid crystals; composites; amino acids; optical transmission; ALANINE; SENSOR; SPECTRA; MATRIX;

D O I：

10.15407/fm26.02.249

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Effects of amino acids on selective reflection and optical transmission of steroid and non-steroid cholesteric liquid crystal systems have been studied. At temperatures close to the isotropic transition, optical transmission in the vicinity of selective reflection band has been shown to be highly sensitive to the presence of amino acids despite very low solubility of these substances. The response of different types of cholesterics was qualitatively similar. For nematic-cholesteric mixture BLO61, an anomalous decrease in optical transmission was observed in a narrow temperature range close to the isotropic transition, with subsequent substantial shift of the selective reflection maximum towards longer wavelengths. Possibilities are discussed of using the proposed approach in development of liquid crystal sensor materials for detection of biological substances.

引用

页码：249 / 253

页数：5

共 19 条

[1] Cholesteric Liquid Crystal Doped by Nanosize Magnetite as an Active Medium of Optical Gas Sensor [J].

Aksimentyeva, Olena ;

Mykytyuk, Zenoviy ;

Fechan, Andrij ;

Sushynskyy, Orest ;

Tsizh, Bohdan .

MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 2014, 589 (01) :83-89

[2]

Avci N, 2007, J OPTOELECTRON ADV M, V9, P413

[3] Microstructure and optical properties of nematic and cholesteric liquid crystals doped with organo-modified platelets [J].

Bulavin, L. A. ;

Lisetski, L. N. ;

Minenko, S. S. ;

Samoilov, A. N. ;

Klepko, V. V. ;

Bohvan, S. I. ;

Lebovka, N. I. .

JOURNAL OF MOLECULAR LIQUIDS, 2018, 267 :279-285

[4] CHOLESTERIC LIQUID-CRYSTALS - PHYSICAL-PROPERTIES AND MOLECULAR-STATISTICAL THEORIES [J].

CHILAYA, GS ;

LISETSKI, LN .

MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 1986, 140 (2-4) :243-286

[5] Liquid crystal based optical sensor for detection of vaporous butylamine in air [J].

Ding, Xiaokang ;

Yang, Kun-Lin .

SENSORS AND ACTUATORS B-CHEMICAL, 2012, 173 :607-613

[6]

Kremer I., 2018, IEEE XPLORE, P724

[7] Optical density and microstructure-related properties of photoactive nematic and cholesteric liquid crystal colloids with carbon nanotubes [J].

Lisetski, L. N. ;

Minenko, S. S. ;

Samoilov, A. N. ;

Lebovka, N. I. .

JOURNAL OF MOLECULAR LIQUIDS, 2017, 235 :90-97

[8] Carbon Nanotubes in Liquid Crystals: Fundamental Properties and Applications [J].

Lisetski, Longin ;

Soskin, Marat ;

Lebovka, Nikolai .

PHYSICS OF LIQUID MATTER: MODERN PROBLEMS, 2015, 171 :243-297

[9] Solvent Vapour Detection with Cholesteric Liquid Crystals-Optical and Mass-Sensitive Evaluation of the Sensor Mechanism [J].

Mujahid, Adnan ;

Stathopulos, Helen ;

Lieberzeit, Peter A. ;

Dickert, Franz L. .

SENSORS, 2010, 10 (05) :4887-4897

[10] INFRARED-SPECTRA AND THE STRUCTURE OF 1-METHYLADENINE IN AN ARGON MATRIX AND SOLUTIONS [J].

PIVOVAROV, VB ;

STEPANIAN, SG ;

REVA, ID ;

SHEINA, GG ;

BLAGOI, YP .

SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY, 1995, 51 (05) :843-853

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