期刊
JOURNAL OF CHROMATOGRAPHY A
卷 1628, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.chroma.2020.461436
关键词
Solvothermal-assisted coating; In situ growth; Octadecylamine; Capillary electrochromatography; Stationary phase
资金
- National Natural Science Foundation of China [21804113, 21974015]
- Science and Technology Transformation Cooperation Project of Luzhou Municipal Government and Southwest Medical University [2019LZXNYDC03]
- Science and Technology Transformation Project of Southwest Medical University [2018001]
- Talent Introduction Project of Southwest Medical University [090300040005]
- Direct For Social, Behav & Economic Scie
- Divn Of Social and Economic Sciences [2018001] Funding Source: National Science Foundation
In recent years, mussel-inspired polydopamine (PDA) based materials have been widely used as stationary phases for open-tubular capillary electrochromatography (OT-CEC) because of their various excellent properties. Nevertheless, the traditional synthesis routes of functionalized PDA-based capillary columns usually are time-consuming and limited in aqueous solutions. Herein, we report a facile and rapid route to prepare octadecylamine (ODA) functionalized PDA coated OT-CEC columns in organic solvents via a novel one-step in situ solvothermal-assisted coating strategy. Through this developed solvothermal-assisted approach, the growth rate of ODA/PDA coating was significantly speeded up and their hybrid coating process on the capillary inner surface could be rapidly completed in 60 min. The successful preparation of the solvothermal-assisted ODA/PDA hybrid coating were systematically characterized and confirmed by several methods. The influence of the preparation parameters on the formation of hybrid coating and the separation ability of the ODA/PDA modified columns were systematically explored. Consequently, the high-efficiency baseline separation of four kinds of neutral, acidic and basic analytes were achieved based on the ODA/PDA modified columns. The repeatability of the solvothermal-assisted ODA/PDA coated column was also studied, and the relative standard deviations for intra-day, inter-day and column-to-column were all less than 5%. Additionally, the solvothermal-assisted ODA/PDA modified column exhibited good stability and long lifetime. (C) 2020 Elsevier B.V. All rights reserved.
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