Investigation of the separation mechanism for tris(ß-diketonato) complexes of transition metals. J. Planar Chromatogr. 3, 495-499 (1990). Rf values of tris(ß-diketonato) complexes of 20 Cobalt (III), Chromium(III) and Ruthenium(III) have been determined on thin layers of polyacrylonitrile sorbent by the application of two monocomponent and six polycomponent non-aqueous solvent systems, and two aqueous solvent systems. A linear dependence has been established between RM values and the number of 2,4-pentanedionato ligands substituted by 1,3-diphenyl-1,3-propanedionato ligands in tris(ß-diketonato) complexes of the aforementioned metals.

Chromatographia 32, 278-284 (1991). Presentation of a new chiral ligand exchange selector for hydrophobic stationary phase modification from selective alkylation of L-histidine at the pyrrolic nitrogen atom in its imidazolic ring. Test of its performance on reverse-phase HPTLC plates treated with copper acetate. Separation of amino acids with various aqueous solvents. Comparison of the retention data with thermodynamic complex formation parameters.

Anal. Chem. 66, 2636-2639 (1994). Description of a new separation approach, combining TLC and molecular imprinting. Chiral TLC separation of model compounds, L- and D-phenylalanine anilide, on plates based on the molecular imprinting technique with a mobile phase consisting of 0, 5, 10, or 15 % acetic acid in acetonitrile. Detection by spraying with fluorescamine (0.05% in acetone ), and viewing under UV 366 nm. Test of the separation of other compounds (anilide, dansyl, ester and amide derivatives of amino acids) on L-phenylalanine anilide and nonimprinted plates. Demonstration of a novel and promising family of stationary phases based on predetermined selectivity for use in TLC.

J. Planar Chromatogr. 9, 92-97 (1996). Investigation of mixed (adsorption - partition) retention mechanisms on normal phase cyano, amino, and diol stationary phases with binary alcohol - n-aliphatic hydrocarbon eluents. The impact of the nature of the chemically bonded ligand and of the qualitative composition of the mixed mobile phase on the relative amounts of adsorption and partition has been clearly demonstrated for a selection of test solutes.

J. AOAC Int. 82, 297-304 (1999). Raman spectroscopic characterization of TLC RP-18-, RP-8-, RP-2-, aminopropyl- and cyanopropyl-, and diol -separation material in the wide, intense, and highly structured region from about 2285 to 1130 cm-1 is well suited for spectroscopic quantitation of the density of coverage of TLC-type RP-18 stationary phases and other TLC-type stationary phases with covalently chemically bonded organic ligands.

J. Planar Chromatogr. 15, 324-331 (2002). Using RP-18 and RP-8 as material, convincing evidence - acc. to the authors - was found of an efficient aromatization process occurring equally with TLC-type octadecyl and octyl ligands heated at 170°C.

Acta Chrom. 13, 102-108 (2003). Five commercial preparative layer chromatography plates precoated with silica gel of 1 mm thickness were compared on the basis of theoretical plate number and resolution by developing a test dye mixture (1.0 - 5.0 µg per zone) with ethyl acetate – methanol – water 4:1:1. Best results were obtained with the Mallinckrodt–Baker layer with 4.5 - 5.5 µm spherical particles. With one exception the efficiency and resolution of the other layers correlated with their particle size.

J. Planar Chromatogr. 23, 426-433 (2010). Mobile phases without addition of buffer salts could be successfully used in planar electrochromatography with a new type of RP-18 sintered plate, prepared from a 1:4 mixture of silica gel for TLC and powdered glass which was suspended in a solution of 0.3 % CMC-Na. The sintering step was the same as already described in J. Planar Chromatogr. 19, 313-318 (2006) except for the temperature which was 651 °C. A suitable degree of bonding of C18 was from 0.03 to 0.06, and good end-capping was achieved by placing the bonded sintered plates in a solution of dimethyldichlorosilane in toluene (ratio 1:100 to 1:1000) at room temperature for 20 min.