Adsorption of water, diethyl ether, and acetonitrile on silicas with grafted perfluorohexyl coatings

被引：3

作者：

Roshchina, T. M. ^{[1
]}

Shoniya, N. K. ^{[1
]}

Lagutova, M. S. ^{[1
]}

Nikol'skaya, A. B. ^{[1
]}

Borovkov, V. Yu. ^{[2
]}

Kustov, L. M. ^{[2
]}

机构：

[1] Moscow MV Lomonosov State Univ, Fac Chem, Moscow, Russia

[2] Russian Acad Sci, ND Zelinskii Organ Chem Inst, Moscow 117334, Russia

来源：

RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A | 2009年 / 83卷 / 02期

关键词：

POLYFLUOROALKYL GROUPS; GAS-CHROMATOGRAPHY; ORGANIC-COMPOUNDS; WETTABILITY; MONOLAYERS; SURFACES;

D O I：

10.1134/S0036024409020253

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The effect of the functionality of modifiers on the adsorption of vapors of compounds capable of strong specific interactions, including water, diethyl ether, and acetonitrile, on silicas with chemically grafted perfluorohexylsilanes (RSi(CH3)(3 -m) Cl (m) , where m (functionality) is 1, 2, 3 and R is polyfluoroalkyl) was studied by adsorption under static conditions, gas chromatography, and IR spectroscopy. It was found that modification with monofunctional silane results in the most hydrophobic coating and a comparatively low-polarity surface with a strongly decreased contribution of specific interactions compared with other modifiers.

引用

页码：290 / 297

页数：8

共 24 条

[1]

[Anonymous], 1986, Intermolecular Interactions in Adsorption and Chromatography

[2] Fluorinated self-assembled monolayers: composition, structure and interfacial properties [J].

Barriet, D ;

Lee, TR .

CURRENT OPINION IN COLLOID & INTERFACE SCIENCE, 2003, 8 (03) :236-242

[3]

Bellamy L.J., 1968, ADV INFRARED GROUP F

[4] Trialkylsilane monolayers covalently attached to silicon surfaces: Wettability studies indicating that molecular topography contributes to contact angle hysteresis [J].

Fadeev, AY ;

McCarthy, TJ .

LANGMUIR, 1999, 15 (11) :3759-3766

[5]

Gregg SJ., 1967, Adsorption Surface Area and Porosity

[6] Peculiarities of adsorption of organic compounds and water on silicas with bonded polyfluoroalkyl groups [J].

Gurevich, KB ;

Roshchina, TM ;

Shoniya, NK ;

Kustov, LM ;

Ivanov, AV .

JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2002, 254 (01) :39-48

[7] Characterization of silylated silicas by inverse gas chromatography: Modelization of the poly(dimethylsiloxane) monomer unit/surface interactions using poly(dimethylsiloxane) oligomers as probes [J].

Khalfi, A ;

Papirer, E ;

Balard, H ;

Barthel, H ;

Heinemann, MG .

JOURNAL OF COLLOID AND INTERFACE SCIENCE, 1996, 184 (02) :586-593

[8]

KISELEV AV, 1983, ZH FIZ KHIM+, V57, P1829

[9]

KISELEV AV, 1972, INFRARED SPECTRA SUR

[10] New trends in IR-spectroscopic characterization of acid and basic sites in zeolites and oxide catalysts [J].

Kustov, LM .

TOPICS IN CATALYSIS, 1997, 4 (1-2) :131-144

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