Synthesis and mesomorphic properties of iron(II)-containing dendrimeric complexes derivative of 3,4-n-dodecyloxybenzoyl poly(propylene imine) |
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| Authors: | Matvey Gruzdev Ulyana Chervonova Tatyana Frolova Arkadiy Kolker |
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| Institution: | 1. G.A. Krestov Institute of Solution Chemistry, Russian Academy of Sciences, Ivanovo, Russiagms@isc-ras.ru;3. G.A. Krestov Institute of Solution Chemistry, Russian Academy of Sciences, Ivanovo, Russia;4. Ivanovo Fire and Rescue Academy of the State Fire Service of the Ministry of the Russian Federation for Civil Defense, Emergencies and Elimination of Consequences of Natural Disasters, Ivanovo, Russia |
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| Abstract: | Synthesis and characterisation of liquid crystalline (LC) Fe(II) complexes with ‘two-chain’-substituted poly(propylene imine) (PPI) dendrimeric ligand of the first to fifth generations are presented. Compounds were synthesised by complex formation between the metal salt and the corresponding dendrimeric ligands. The purity and structure were proved by different methods. The calculated amount of iron in the complexes was confirmed by the experimental data with a great degree of precision. Iron ions are incorporated into the dendrimer at two sites: at the border and inside of the dendrimeric core. A tetragonal coordination of iron was found. Mesomorphic properties of dendrimer iron(II) complexes were studied, a hexagonal columnar mesophase (Colh) was evaluated by the results of X-ray scattering. Upon excitation at absorption bands, iron dendrimeric complexes exhibit fluorescence properties. |
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| Keywords: | Liquid crystalline complexes dendrimers hexagonal columnar mesophase iron(II) fluorescent properties |
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