Supramolecular assemblies of photochromic benzodithia-18-crown-6 ethers in crystals, solutions, and monolayersElectronic supplementary information (ESI) available: crystal data, data collection, and structure solution and refinement parameters. See http://www.rsc.org/suppdata/nj/b1/b110630a/

Multifunctional membranes based on photosensitive crown-ether derivatives with advanced properties

“…The development of monolayers of these PCEDs 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 the investigations of the monolayer properties of type-II PCEDs mixed with various surface-active monomers and polymers in the range 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 PCEDs mixed in equimolar ratios with poly(16-di(metacryloyloxyhexadecanoyl)glicero-3-phosphoryl choline , no "deviations from additivity" are observed at 20 mN/m on the surface of water.…”

“…Researchers [23,24] synthesized a new amphiphilic butadienyl crown ether (BDCE) (Fig. 1c) with two sulfur atoms in the crownether ring structure of the molecule.…”

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

“…Researchers at the Photochemistry Center of the Russian Academy of Sciences synthesized a new amphiphilic butadienyl crown ether (BDCE) (Figure 1c) with two sulfur atoms in the crown-ether ring-structure of the molecule [23,24]. BDCE was found to be capable of forming relatively stable monolayers on the surface of water (with a collapse pressure around 42 mN/m), as well as solutions of alkaline salts (π = 40–45 mN/m) and heavy metal salts (π = 23–40 mN/m), which in most cases is substantially higher than the collapse pressure for the monolayers of the dithio derivatives of the CCDs (π = 25.5–34.5 mN/m) studied by us earlier [19,20,21].…”

Novel Linear Bis-Crown Receptors with Cross-Conjugated and Conjugated Central Cores

“…If there are double bonds such as N=N or C=C between two crown ether moieties in the receptor, the complex formation processes are accompanied by significant changes in the spectral characteristics. [4][5][6][7][8][9] The most peculiar photochemical processes taking place in these supramolecular systems with significant changes in the properties are trans-cis-photoisomerization and [2+2]-photocycloaddition (PCA) reactions. [10][11] Consequently, it is possible to control the receptor properties of bis-crown ethers through photochemical modification of the labile central moiety.…”