Influence of the counter-anion on the interaction of cations with the benzodithia-18-crown-6 butadienyl dye in monolayers

Membrane and Films Based on Novel Crown-Containing Dyes as Promising Chemosensoring Materials

“…The development of monolayers of these CCDs mixed with surface-active monomers or polymers yields nanosystems whose properties can be controlled as desired by varying the orientation and packing of molecules in the monolayers, as well as their photosensitivity and ion selectivity, and improving their stability and strength. That is confirmed by the results of investigations of the monolayer properties of type-II CCDs mixed with various surface-active monomers and polymers in the range of proportions from 1:10 to 10:1 formed on the surface of water and solutions of various salts [ 21 , 23 , 24 , 25 , 26 ]. For monolayers of type-IIa or type-IIb CCDs mixed in equimolar ratios with poly(16-di(metacryloyloxyhexadecanoyl)glicero-3-phosphoryl choline (16-MHPC), no “deviations from additivity” are observed at 20 mN/m on the surface of water.…”

“…There is more proof of the specific interaction between the BDCE and Hg 2+ cation [24,25,26]. Small BDCE domains were found by the Brewster-angle microscopy method in the monolayers on the surface of water and 1 mM KClO 4 and Pb(ClO 4 ) 2 solutions.…”

“…These effects are due to the differences in the type of molecular structures present in the monolayers. One is the monomer form of the dye, the second (with the absorption maximum shifted toward longer wavelengths) is characterized by the formation of “large” BDCE aggregates, and the third (with the absorption maximum shifted toward shorter wavelengths) is characterized by the formation of BDCE“dimers” [ 25 , 26 , 27 ]. In the case of 1 mM Hg(ClO 4 ) 2 solution, the absorption spectrum of the monolayer at π = 1 mN/m has a broad band with the maximum at 470 nm ( Figure 7 b, curve 4), which is shifted to 442 nm upon contraction of the monolayer at π = 30 mN/m ( Figure 7 b, curve 1).…”

Characterization of Langmuir and Langmuir–Blodgett films of a thiomacrocyclic ionophore by surface pressure and AFM

“…Sergeeva et al [9] have studied the influence of the counter-anion on the interaction of cations with the benzodithia-18-crown-6 butadienyl dye in monolayers.…”

Spectral Studies of the Dithiacrown Ether Derivative in the Presence of Metal Cations and Modeling Their Possible Complexes

“…В публикациях [8,9] описаны свойства монослоев производных дитиакраун-эфиров и их комплексообразо-вание с катионами металлов. В работе [10] исследовано поведение монослоёв Ленгмюра нового дифильного краун-замещённого хромоионофора на водной субфазе и установлено, что входящий в состав комплекса дитиа-азакраун-эфир избирательно связывает катионы Hg 2+ как в органических растворителях, так и из водной субфазы.…”