https://nova.newcastle.edu.au/vital/access/ /manager/Index ${session.getAttribute("locale")} 5 https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:26330 as) of a number of novel polymerisable vinyl biaryl compounds, 4-(4'-ethenylphenyl)-pyridine (M1), 4'-ethenyl-(1,1'-biphenyl)-4-ol (M2), 4'-ethenyl-N,N-dimethyl-(1,1'-biphenyl)-3-amine (M3), 4'-ethenyl-(1,1'-biphenyl)-4-methanol (M4), 4'-ethenyl-N,N-dimethyl-(1,1'-biphenyl)-4-amine (M5), 4'-ethenyl-(1,1'-biphenyl)-4-carboxylic acid (M6), 4'-ethenyl-4-hydroxy-5-methyl-(1,1'-biphenyl)-3-carboxaldehyde (M7) were determined in a mixed solvent (THF-water) potentiometric titration at 25 °C and subsequent extrapolation to pure water via the Yasuda-Shedlovsky method. The acidity and basicity of the compounds in THF-water mixtures was observed to decrease with increasing THF fraction and is attributed to the corresponding decrease in the dielectric constant of the solution. To the best of our knowledge, this is the first reported study of pK_a values undertaken for this class of compounds. The biaryls, M1-M7, were prepared by microwave-assisted Suzuki cross coupling of 4-vinylphenyl boronic acid with the appropriate aryl bromide and were custom designed for use as functional monomers in the synthesis of molecularly imprinted polymers.]]> Sat 24 Mar 2018 07:35:56 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:22079 Sat 24 Mar 2018 07:15:16 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:45730 3- functional group. This study prepared PEDOT/Carr aqueous dispersion in 1:1 ratio by weight as a conductive green polymer. PEDOT/Carr (1:1) dispersion was succesfully synthesized by oxidative polymerisation via in-situ and post-polymerisation reaction. The effect of base solutions or pH is very interesting to investigate on physicochemical of carrageenan doped with PEDOT. Processable conductive PEDOT/Carr dispersion needs to be investigated to optimize the properties of the film.]]> Fri 04 Nov 2022 09:59:34 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:45732 2S₂O₈ and Fe₂(SO₄)₃ as oxidation agents. The reactions performed using ratio EDOT:PSS of 1:2.5, with the addition of varying concentrations of end capping agent: 10%, 20%, 30%, 40% and 50% by weight with respect to the EDOT monomer. Chemical characterisations of the structures were analysed using NMR and FTIR. PEDOT/PSS dispersions were also analysed using dynamic light scattering (DLS), capillary electrophoresis (CE), scanning electron microscopy (SEM), and conductivity measurements using the four point probe method. The results showed that the end-capping PEDOT was successfully employed using 2TMM monomer. The higher ratio of end-capping agent resulted in smaller PEDOT as indicated by CE and DLS results. Films surface were smoother with an increase in the ratio of end-capping monomer. While the conductivities of the films decreased with an increase in the ratio of 2TMM monomer.]]> Fri 04 Nov 2022 09:59:25 AEDT ]]>