Conjugated compounds in supramolecular informational systems: A review

The Role of Oxygen in Electrochemical Reduction of Double-Decker Phthalocyaninates of Lanthanides

“…As it is known, [17][18][19][21][22][23][24][25][26] cerium atom in sandwich-type phthalocyaninates can exhibit two oxidation states: +3, as all the lanthanides and +4. Special stability of the configuration of the 4f 0 free shell makes tetravalent state of the cerium ion quite stable.…”

“…Some groups note high prospects of employment of large set of electrochemically reversible redox-transitions in sandwich complexes of lanthanides for multibit information recording. [14][15][16][17][18] In this light, phthalocyaninates of lanthanides with variable valence attract great interest due to possibility of realization of additional redox-process associated with change of metal center oxidation state. [18][19][20][21][22][23][24][25] On the other hand, practical application of such compounds requires knowledge on the influence of external factors on properties of redox-processes taking place in these systems.…”

Unusual Cyan-Purple Electrochromism of Sandwich Phthalocyaninates Observed on the Example of µ-Carbido Diruthenium(IV) Complex

“…One of the most prominent features of sandwich REE phthalocyaninates is their ability to change color within red-green-blue gamut upon Pc-centered redox-transformations, [17][18][19][20] which made them valuable components of electrochromic materials and sensors. [21][22][23][24] In the context of studies devoted to sandwich complexes, the legacy of Professor Larisa G. Tomilova is difficult to overestimate. Since early 1980s her research interests have been unfailingly focused on doubleand triple-decker complexes involving their thorough characterization and fabrication of materials and devices via thin-film technologies.…”

The Effect of Alkyl Substituent Length on Receptor Properties of Dithiaaza-Сrown-Hemicyanine MonolayersThe Effect of Alkyl Substituent Length on Receptor Properties of Dithiaaza-crown - Hemicyanine Monolayers

“…[1][2][3][4] From this standpoint, crown ether substituted fluoro-and chromophores capable of significant changes of photophysical properties upon selective binding of cations are of special interest. [5][6][7][8][9][10][11] Modification of the crown ether cycle allows achieving high selectivity and binding constants for biologically and environmentally important metal ions. For example, replacement of one or two oxygen atoms in this cycle by sulfur ones can lead to higher affinity for mercury and copper cations.…”

“…[12][13][14][15][16][17][18] Moreover, simultaneous inclusion of nitrogen atom into the crown-substituent of a coloured molecule as a part of both ionophoric and chromophoric moieties is an easy way to impart the chromoionophoric power to the dye molecule and obtain a spectral response to metal cation binding since their interaction with the nitrogen atom will reduce the overall chromophore conjugation and thus change the photophysical properties of the system. [5][6][7][8][9][10][11][19][20][21][22][23] In this regard, aza-crown substituted hemicyanines represent one of the most promising compounds for sensory applications due to the combination of hemicyanine spectral properties (absorbance and fluorescence in visible range), crown ether receptor ability and ease of chemical modification. [5,12,17,[24][25][26][27][28][29][30][31][32] However, most studies concerning the sensory properties of such crown-substituted hemicyanines were done in solution.…”