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Journal of Chemical Physics / Volume 123 / Issue 19 / ARTICLES / Condensed Phase Dynamics, Structure, and Thermodynamics: Spectroscopy, Reactions, and Relaxation

J. Chem. Phys. 123, 194509 (2005); http://dx.doi.org/10.1063/1.2110155 (7 pages)

Interfacial effects on vitrification of confined glass-forming liquids

Olga Trofymluk, Andrey A. Levchenko, and Alexandra Navrotsky

Thermochemistry Facility and Nanomaterials in the Environment, Agriculture and Technology Organized Research Unit, University of California at Davis, Davis, California 95616

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(Received 31 August 2005; accepted 13 September 2005; published online 16 November 2005)

Mesoporous silica phases, with uniform pores of dimensions in the 2–30 nm range, offer a uniquely well-defined environment for the study of the effects of two-dimensional spatial confinement on the properties of glass-forming liquids. We report observations by differential scanning calorimetry of the vitrification of o-terphenyl (OTP), salol, and glycerol in hexagonal mesoporous silica (MCM-41 and SBA-15) in a wide range of pore sizes from 2.6 to 26.4 nm. In agreement with previous studies, where a controlled porous glass is used as a solid matrix, the glass transition temperature for o-terphenyl diminishes with decreasing pore size. In contrast to OTP, glycerol shows a gradual increase in glass transition temperature, while in salol a slight reduction of glass transition temperature is observed, followed by an increase, which results in glass transition temperature indistinguishable from that of the bulk for the smallest pores. These results are discussed in terms of liquid-surface interactions in an interfacial layer, monitored by Fourier-transformed infrared spectroscopy in the study. The hydrogen bonding with silica surface silanols dominates the glass transition trends observed in salol and glycerol.

© 2005 American Institute of Physics

Article Outline

  1. INTRODUCTION
  2. EXPERIMENTAL METHODS
    1. Mesoporous material synthesis and characterization
    2. Sample preparation
    3. FTIR spectroscopy
    4. DSC measurements
  3. RESULTS AND DISCUSSION
    1. FTIR spectroscopy
    2. Calorimetry
  4. CONCLUSIONS

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KEYWORDS and PACS

Keywords

vitrification, glass transition, organic compounds, porous materials, Fourier transform spectra, infrared spectra, hydrogen bonds, differential scanning calorimetry

PACS

  • 64.70.P-

    Glass transitions of specific systems

  • 64.70.Q-

    Theory and modeling of the glass transition

  • 78.30.-j

    Infrared and Raman spectra

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.2110155

PUBLICATION DATA

ISSN

0021-9606 (print)  
1089-7690 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

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    J. Schuller, Y. B. Melnichenko, R. Richert, and E. W. Fischer, Phys. Rev. Lett. 73, 2224 (1994).

    Y. B. Melnichenko, J. Schuller, R. Richert, B. Ewen, and C. K. Loong, J. Chem. Phys. 103, 2016 (1995)JCPSA6000103000006002016000001.

    M. Arndt, R. Stannarius, W. Gorbatschow, and F. Kremer, Phys. Rev. E 54, 5377 (1996).

    M. Arndt, R. Stannarius, H. Groothues, E. Hempel, and F. Kremer, Phys. Rev. Lett. 79, 2077 (1997).

    G. Carini, V. Crupi, G. DAngelo, D. Majolino, P. Migliardo, and Y. B. Melnichenko, J. Chem. Phys. 107, 2292 (1997)JCPSA6000107000007002292000001.

    D. Morineau, Y. D. Xia, and C. Alba-Simionesco, J. Chem. Phys. 117, 8966 (2002)JCPSA6000117000019008966000001.

    S. S. Chang and A. B. Bestul, J. Chem. Phys. 56, 503 (1972)JCPSA6000056000001000503000001.

    R. Stannarius, F. Kremer, and M. Arndt, Phys. Rev. Lett. 75, 4698 (1995).

    A. G. Kalampounias, S. N. Yannopoulos, W. Steffen, L. I. Kirillova, and S. A. Kirillov, J. Chem. Phys. 118, 8340 (2003)JCPSA6000118000018008340000001.

    J. Y. Park and G. B. McKenna, Phys. Rev. B 61, 6667 (2000).


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