Poly(4-vinylpyridine) as a reagent with silanol-masking effect for silica and its specific selectivity for PAHs and dinitropyrenes in a reversed phase

Ihara, Hirotaka; Fukui, Megumi; Mimaki, Takamasa; Shundo, Atsuomi; Dong, Wu; Derakhshan, Mahnaz; Sakurai, Toshihiko; Takafuji, Makoto; Nagaoka, Shoji

doi:10.1016/j.aca.2005.05.056

Cited by 32 publications

(17 citation statements)

References 21 publications

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“…Usually, better peak shape for basic compounds can be obtained by using stationary phases containing polar functional groups such as amide , urea , and pyridine , which are not normally present in the conventional n ‐alkyl bonded phases. As shown in Table , PHE‐Cx4 exhibits excellent peak symmetry for basic compounds compared with ODS in the nonbuffered mobile phase.…”

Section: Resultsmentioning

confidence: 99%

Development and application of a new 25,27‐bis(l‐phenylalaninemethylester‐N‐carbonylmethoxy)‐26,28‐dihydroxy‐para‐tert‐butylcalix[4]arene stationary phase

Zhang

Liu

et al. 2013

J of Separation Science

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A 25,27-bis(L-phenylalaninemethylester-N-carbonylmethoxy)-26,28-dihydroxy- para-tert-butylcalix[4]arene-bonded silica gel stationary phase was synthesized, structurally characterized and used for LC. Its separation mechanism was studied and compared with octadecyl-bonded stationary phase, as well as our previously prepared para-tert-butylcalix[4]arene-1,2-crown-4 stationary phase. Meanwhile, the chromatographic behaviors were investigated by using polycyclic aromatic hydrocarbons, monosubstituted benzenes, anilines, phenols, Tanaka tests solutes, fluoroquinolones, and flavonoids as probes. Mechanisms involved in the chromatographic separation included hydrophobic, π-π and π-electron transfer, hydrogen bonding, and inclusion interactions. Moreover, the column was successfully employed for the analysis of the illegal additive of melamine in milk product.

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Section: Resultsmentioning

confidence: 99%

Development and application of a new 25,27‐bis(l‐phenylalaninemethylester‐N‐carbonylmethoxy)‐26,28‐dihydroxy‐para‐tert‐butylcalix[4]arene stationary phase

Zhang

Liu

et al. 2013

J of Separation Science

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“…Poly(4-vinylpyridine) with a terminal trimethoxysilyl group was prepared according to a previously reported telomerization method. [1][2][3] The polymer is grafted onto silica by mixing with chloroform at reflux temperature. The amount of grafting was quantified by elemental analysis (13.63% carbon and 2.14% nitrogen) and thermogravimetric analysis (TGA) [amount of immobilization 16.7 wt% (Fig.…”

Section: Synthesis Of Stationary Phasesmentioning

confidence: 99%

“…Poly(4-vinylpyridine)-modified silica (Sil-VPn) has shown useful separation behaviors for polycyclic aromatic hydrocarbons (PAHs) in both normal-phase (NP) 1 and reversedphase (RP) 2,3 high-performance liquid chromatography (HPLC). The mixed mode of retention mechanism exhibited by a Sil-VPn column is not achievable by more conventional normal-phase or reversed-phase columns; 1 thus, the Sil-VPn has a potential for further development and study.…”

Section: Introductionmentioning

confidence: 99%

Enhancement of Retentivity and Selectivity for PAHs in NP-HPLC by High-density Immobilization of Poly(4-vinylpyridine) as an Organic Phase on Silica

Gautam

Sawada

et al. 2008

ANAL. SCI.

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Poly(4-vinylpyridine)-modified silica with high grafting density have been prepared by a grafting-from (g-from) approach through radical chain-transfer reactions. The widely used silane coupling agent 3-mercaptopropyltrimethoxysilane was used to prepare thiol-terminated silica. Chain-transfer reaction and polymerization of 4-vinylpyridine was carried out using alpha,alpha'-azobisisobutyronitrile as an initiator. Thiol-terminated silica and polymer-modified silica were both characterized qualitatively and quantitatively. The quantification of the organic phase has been done by thermogravimetric analysis and elemental analysis. Thus, the modified silica was used as a packing material and the retention behavior of polycyclic aromatic hydrocarbons (PAHs) was studied in normal-phase high-performance liquid chromatography. Results were compared with those of poly(4-vinylpyridine)-modified silica prepared by a grafting-to (g-to) approach. Commercially available aminopropyl-bonded silica and bare silica columns were also used as reference columns. The column of poly(4-vinylpyridine)-grafted silica prepared by the g-from method, having higher grafting density, provided the better retentivity and selectivity for PAHs compared to the other reference columns.

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“…Qiu et al 15 synthesized poly(ionic liquid)‐grafted silica hybrid materials through the surface radical chain‐transfer polymerization. Subsequently, they used the same method to prepare poly(4‐vinylpyridine)‐grafted silica 16, 17. Poly(4‐vinylpyridine)‐grafted silica not only reduced undesirable silanol effects against basic compounds in RP‐HPLC but also showed unique shape‐selective separation for polycyclic aromatic hydrocarbons (PAHs) in both RP‐ and NP‐HPLC 4, 16, 17.…”

Section: Introductionmentioning

confidence: 99%

Chromatographic characteristics of poly(1‐vinylimidazole)‐grafted silica in normal‐phase HPLC

Sun

Feng

Liu

et al. 2011

J of Separation Science

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A stationary phase based on poly(1-vinylimidazole)-grafted silica has been prepared by the surface radical chain-transfer reaction. The stationary phase was characterized by infrared spectra, X-ray photoelectron spectroscopy and elemental analysis. Chromatographic characteristics of the stationary phase were investigated in normal-phase HPLC. The results showed that both weak polar compounds (polycyclic aromatic hydrocarbons, dialkyl phthalates) and polar compounds (anilines, phenols) could be successfully separated on this stationary phase, implying better separation performance than blank silica and conventional aminopropyl-bonded silica under the same conditions. The excellent performance can be attributed to multiple interactions between surface modifier and the analytes that might include dipole, hydrogen bonding, H-π, electrostatic and inductive interactions.

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Poly(4-vinylpyridine) as a reagent with silanol-masking effect for silica and its specific selectivity for PAHs and dinitropyrenes in a reversed phase

Cited by 32 publications

References 21 publications

Development and application of a new 25,27‐bis(l‐phenylalaninemethylester‐N‐carbonylmethoxy)‐26,28‐dihydroxy‐para‐tert‐butylcalix[4]arene stationary phase

Development and application of a new 25,27‐bis(l‐phenylalaninemethylester‐N‐carbonylmethoxy)‐26,28‐dihydroxy‐para‐tert‐butylcalix[4]arene stationary phase

Enhancement of Retentivity and Selectivity for PAHs in NP-HPLC by High-density Immobilization of Poly(4-vinylpyridine) as an Organic Phase on Silica

Chromatographic characteristics of poly(1‐vinylimidazole)‐grafted silica in normal‐phase HPLC

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