Capillary gas chromatographic separation performances of a tetraphenyl porphyrin stationary phase was written by Yan, Yuan;Wang, Zhenzhong;Zhang, Zitong;He, Zhen;Luo, Lun;Fan, Jing. And the article was included in Frontiers in Chemistry (Lausanne, Switzerland) in 2022.Recommanded Product: Methyl heptanoate The following contents are mentioned in the article:
Tetra-Ph porphyrin (TPP) has enormous potential for use as gas chromatog. stationary phases because it has a distinctive extended π-π conjugated coplanar structure and a range of interesting properties such as a good solubility in dichloromethane, high m.p., and good thermal stability. In this work, a TPP column was successfully prepared using a static method. The column was nonpolar and had a high efficiency. The chromatog. selectivity of the TPP column was assessed. The TPP column showed superiority retention and higher resolution for alicyclic, aromatic mols. through ring matching and π-π stacking interaction comparable to HP-5MS column. The unique mechanisms through which the TPP column retained polychlorinated biphenyls allowed the peak pair of 2,2′,5-trichlorobiphenyl and 4,4′-dichlorobiphenyl to be resolved better on the TPP column than the HP-5MS column. The TPP column was thermally stable even at 260°C for 2 h and gave results of a high degree of precision (run-to-run and column-to-column) with relative standard deviations <0.05% and <4.96%, resp. The results indicated that porphyrin derivatives will be useful gas chromatog. stationary phases. This study involved multiple reactions and reactants, such as Methyl heptanoate (cas: 106-73-0Recommanded Product: Methyl heptanoate).
Methyl heptanoate (cas: 106-73-0) belongs to esters. Carboxylic acid esters of low molecular weight are colourless, volatile liquids with pleasant odours, slightly soluble in water. Acyl chlorides and acid anhydrides alcoholysis is another way to produce esters. Acyl chlorides and acid anhydrides react with alcohols to produce esters. Anydrous conditions are recommended since both acyl chlorides and acid anhydrides react with water.Recommanded Product: Methyl heptanoate
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics