Preparation and evaluation ofp-tert-butyl-calix[4]arene-bonded silica stationary phases for high performance liquid chromatography
β Scribed by Xiang-Zhu Xiao; Yu-Qi Feng; Shi-Lu Da; Yan Zhang
- Publisher
- Springer
- Year
- 1999
- Tongue
- English
- Weight
- 452 KB
- Volume
- 49
- Category
- Article
- ISSN
- 0009-5893
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π SIMILAR VOLUMES
Silica gel bonded phases with a nitrogen-containing crown ether were synthesized via a three-step reaction on the surface of porous silica. The bonded molecular structure was characterized by chemical and instrumental analyses. The bonded phases possess complexing ability with copper ion and weak hy
Chromatographic silica (10 lm) was chemically modified with the silylating agent: [3-(2-aminoethyl)aminopropyl]trimethoxysilane (AEAPTS). The reaction product was characterized by elemental analysis and infrared and 13 C and 29 Si NMR spectra. The chemically modified silica was treated with Cu(II) i
## Abstract The __1,3βalternate__ 25,27βbisβ[__p__βchlorobenzyloxy]β26,28βbisβ[3βpropyloxy]βcalix[4]areneβbonded silica gel stationary phase was synthesized, structurally characterized, and used as a selector in high performance liquid chromatography. Selectivity studies on that phase used aromatic