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ABSTRACT
The possibilities of new metal-mesogenic complex formation and their solid phase chemical reactions have been demonstrated using low temperature co-condensation techniques and ESR-spectroscopy for a solid triple system, containing silver, the mesogenic ligand 4-pentyl-4-cyanobiphenyl (5CB) and an alternative electron-acceptor ligand or the third reactive component carbon tetrachloride (CCl4). It was shown by ESR-spectroscopy that the existence of four paramagnetic products were stabilised in the system at low temperatures: silver atom π-complex with two cyanobiphenyl molecules, silver atom σ-complex with cyanobiphenyl molecule stabilised by CCl4 co-ligand, AgCl−CCl3• and silver nanoclusters, formed by silver atom aggregation in the mesogenic matrix. The relative thermal stability of these silver species and their thermal behavior are discussed.
Acknowledgments
The work was financially supported by RFBR grants 02-03-32469, 04-03-32748, Russian Federal Programme “Universities of Russia” and INTAS grant 2000-00911.