An article Preparation and comparison of three zwitterionic stationary phases for hydrophilic interaction liquid chromatography WOS:000506184500001 published article about SELECTIVITY; RETENTION; MODE; COLUMNS; POLYMER in [Qiao, Lizhen; Yu, Chunmei; Sun, Ruiting] Dalian Univ Technol, Sch Chem Engn, Inst State Key Lab Fine Chem, Panjin 124221, Peoples R China in 2020, Cited 35. The Name is 4-Nitrobenzoic acid. Through research, I have a further understanding and discovery of 62-23-7. Product Details of 62-23-7
Surface-bonded zwitterionic stationary phases have shown highlighted performances in separation of polar and hydrophilic compounds under hydrophilic interaction chromatography mode. So, it would be helpful to evaluate the characteristics of zwitterionic stationary phases with different arranged charged groups. The present work involved the preparation and comparison of three zwitterionic stationary phases. An imidazolium ionic liquid was designed and synthesized, and the cationic and anionic moieties respectively possessed positively charged imidazolium ring and negatively charged sulfonic groups. Then, the prepared ionic liquid, phosphorylcholine and an imidazolium-based zwitterionic selector were bonded on the surface of silica to obtain three zwitterionic stationary phases. The selectivity properties were characterized and compared through the relative retention of selected solute pairs, and different kinds of hydrophilic solutes mixtures were used to evaluate the chromatographic performances. Moreover, the zwitterionic stationary phases were further characterized by the modified linear solvation energy relationship model to probe the multiple interactions. All the results indicated that the types and arrangement of charged groups in zwitterionic stationary phases mainly affect the retention and separation of ionic or ionizable compounds, and for interaction characteristics the contribution from n and pi electrons and electrostatic interactions displayed certain differences.
Product Details of 62-23-7. Welcome to talk about 62-23-7, If you have any questions, you can contact Qiao, LZ; Yu, CM; Sun, RT or send Email.
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Phthalazine – Wikipedia,
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