Synthesis of fluorine end group containing poly(aryl ether) dendritic calixarenes using convergent approaches

In this study, by using convergent (from the surface to the nucleus) synthesis method, new poly(aryl ether) dendritic structures and dendritic calix[4]arenes at the zeroth (G-0) and first (G-1) generation number, which carry perfluorobenzyl bromide (1) on the surface and 5,11,17,23-tetra-tert-butyl-25,26,27,28-tetrahydroxcalix[4]arene (7) at the focal point were synthesised by using Williamson ether synthesis method.Synthesized dendritic structures, after being purified by chromatographic techniques, were proved by spectroscopic methods (FTIR, 1H-NMR, 13C-NMR) and elemental analysis.The effect of the generation number on thermal stability of the synthesized dendritic structures was investigated. Because of the fact that fluorine atom number of the structure increased thermal stability of the structure mentioned were determind to increase. An increase in the generation number leads an increase steric effect. Hence at second generation dendrimer, thermal stability of the structure were decreased.