J. Planar Chromatogr. 10, 18-25 (1997). Study of the distribution of different ion-pairing reagents, e.g. tetramethylammonium (TMA), tetrabutylammonium (TBA), cetyltrimethylammonium (CTMA), and trioctylmethylammonium (TOMA) by measurement of the absolute concentrations of the compounds in the stationary phase after chromatography (OPLC) on silica impregnated by immersion into a methanolic solution (0.05 M) of the reagents with methanol - water mixtures in different ratios. The behavior of acidic, neutral, and basic compounds were studied simultaneously. The chromatographic results showed good correlation with the concentration of the reagents measured on the layer.

J. Planar Chromatogr. 13, 37-41 (2000). TLC of phenol derivatives (2-amino-, 3-amino-, 4-amino-, o-, m-, p-nitrophenol, o-, m-, p-cresol, 2,3-, 2,4-, 2,5-, 2,6-, 3,4-, 3,5-dichlorophenol) on chitin with water - aliphatic alcohol, water - carboxylic acid, water - mineral acid, water - inorganic base and water - mineral salt mixtures.

J. Planar Chromatogr. 15, 324-331 (2002). Further investigation of the possibility that aliphatic ligands on chemically bonded TLC phases are partially aromatized at considerably elevated temperatures (considerably higher than 100°C). After heating in closed systems and extraction analysis was performed by HPLC-DAD.

J. Chromatogr. A 1266, 168-174 (2012). RP-TLC plates modified with C18, C8 or C2 are available on the market, however, RP-plates with tunable polarity have not been reported. Because of the limited variety of RP-plates mobile phase optimization is needed which is often time consuming. The presented polarity-adjustable RP-UTLC plates simplify the mobile phase screening process and expand the selection of reversed phase plates. The plates were prepared using the glancing angle deposition (GLAD) technique to deposit SiO2 nanopillars on glass plates and functionalized with octadecyltrichlorosilane for hydrophobicity. By O2 plasma treatment the silane carbon chain was shortened and COOH groups were introduced to the surface, producing plates with finely tunable polarities. Confirmation of the tuning of surface polarities by measurement of retention behavior changes in the separation of a model dye mixture of Sudan blue and Sudan IV, the elution order of which reversed as a result of the change in surface polarity. Testing on commercial RP-plates showed no change in the separation behavior which proves that plasma treatment of GLAD structures with highly accessible surfaces improves control over interfacial properties, producing better reverse phase separations. UTLC of Sudan blue and Sudan IV in toluene on the new RP-UTLC plates in horizontal developing chamber with acetonitrile, detection in visual light by recording of the development process by video camera).

J. Planar Chromatogr. 31, 36-47 (2018). Mineralogical and physicochemical characterization of the Nevşehir tuff and its application as a stationary phase for the separation of polar compounds such as amino acids or food dyes. Plates were coated with a slurry consisting of a mixture of adsorbent (Mirșid tuff or_x000D_ Nevşehir tuff), binder (polyvinyl alcohol or gypsum), and other admixtures. The impregnation of the Nevşehir tuff with sodium hydroxide and sodium chloride, respectively, allowed the separation of some hydrophilic dyes.

J. Chromatogr. 368, 168-173 (1986). TLC of 2,6-dihydroxybenzoic, salicylic, 2,4-dihydroxybenzoic and gentesic acids on silica, or paraffin-coated silica, or octadecyl-bonded silica. With methanol - water based solvent systems, and on silica coated with 1, 12-bis(trimethyl ammonium)dodecane, or 1,3-bis(trimethyl ammonium)propane, or tetra-n-butylammonium, with methanol - dichloromethane based solvent systems. Comparison of the performance of the two bolaform ion-pair reagents with those of two conventional reagents.

Chinese J. Chromatogr. 7, 112-114 (1989). Presentation of a mixed layer made up of silica and microcrystalline cellulose suitable for TLC separation and quantitative analysis of amino acids, nucleosides, organic acids and saccharides, etc. with several separation examples.