Abstract
A novel polyphenyl-grafted polysiloxane stationary phase named 3,4-bis(2-fluoro-5-(trifluoromethyl)phenyl)-2,5-diphenyl phenyl grafted polysiloxane stationary phase (FFMP) was synthesized through a Diels–Alder reaction with a high column efficiency (average number of plates: 3700 plates/m; achieved by naphthalene at 120 °C) and simultaneously coated on fused silica capillary tubes to prepare a gas chromatographic column with excellent performance. The column performance test results indicated that the FFMP columns could work properly up to 360 °C, as evidenced by the chromatogram of the polyethylene pyrolysis mixture. The thermogravimetric analysis curve showed that the decomposition temperature of the FFMP was up to 380 °C. The FFMP columns were also applied in the separation and analysis of multimixtures, such as Grob test mixtures, benzene mixtures and fatty acid esters, and as well as a medium polar stationary phase (according to the results of McReynolds constants, the sum of ∆I was 779.) The FFMF columns exhibited excellent separation selectivity for these substances because of the conjugated system formed by the polyphenyl side chain connected by single bonds. This conjugated system can promote the delocalization of π-electrons as well as enhance the forces of π–π interaction, and the dipole-induced dipole action between the FFMP stationary phase and the analytes.







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This study was supported by the National Natural Science Foundation of China (No. 21275090).
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Wang, B., Liu, J., Li, X. et al. Synthesis and Applications of a Novel 3,4-Bis(2-Fluoro-5-Trifluoromethyl Phenyl)-2,5-Diphenyl Phenyl Grafted Polysiloxane Stationary Phase. Chromatographia 81, 1219–1229 (2018). https://doi.org/10.1007/s10337-018-3556-7
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DOI: https://doi.org/10.1007/s10337-018-3556-7


