The synthesis and characterization of polymerizable azo-naphthols for use in polymeric materials

Synthesis, spectral characterisation and thermal behaviours of some new p-tert-butylcalix[4]arene and calix[4]arene-esters containing acryloyl groups

“…The other characteristic features coming at 1635-1593 cm À1 and 1306-1132 cm À1 are attributed to the ethenyl (CH 2 @CHA) and the aromatics AC@CA, AC(O) AOA and ArAO, respectively. These findings indicates that the synthesised compounds exist in calixareneesters forms as proved by studies in the literature [24,[25][26][27][28][29][30][31][32].…”

“…The resonance peaks of ethenyl hydrogen atoms in acryloyl groups of the compounds 3-10 were identified as three different groups (H13, H14, H15) at 6.50-4.50 ppm in agreement with the literature [26,32,33]. When the acryloyl proton peaks of the [4]arenes 7-10 without p-tert-butyl groups, these peaks were observed between 6.39-5.25 ppm depending on the increase in the number of acryloyl group.…”

“…1) were given in Section 2. The characteristic stretches of the carbonyl groups of acryloyl moiety of the synthesised compounds were identified as a very strong singlet absorption at 1749-1732 cm À1 [24][25][26]. The OH group stretching vibration of p-tert-butylcalix [4]arene and calix [4]arene 1, 2 was observed at ca.…”

“…The related values can be seen in Table 2. These findings indicate that the compounds 3-10 exist in calixarene-ester forms [24][25][26][27][28][29][30][31][32].…”

“…The mono-, di-, tri-, and tetra-acryloyl esters of p-tert-butylcalix [4]arene and calix [4]arene compounds can be important in preparing calixarenes containing unsaturated groups in their molecules and undergo copolymerisation with different vinyl monomers ( Fig. 1) [23][24][25][26], their antioxidant properties and in other experiments.…”