Interfacial effects on vitrification of confined glass-forming liquids
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...
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| Veröffentlicht in: | The Journal of chemical physics 2005-11, Vol.123 (19), p.194509-194509-7 |
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| container_title | The Journal of chemical physics |
| container_volume | 123 |
| creator | Trofymluk, Olga Levchenko, Andrey A. Navrotsky, Alexandra |
| description | 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. |
| doi_str_mv | 10.1063/1.2110155 |
| format | Article |
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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.</description><identifier>ISSN: 0021-9606</identifier><identifier>EISSN: 1089-7690</identifier><identifier>DOI: 10.1063/1.2110155</identifier><identifier>PMID: 16321102</identifier><identifier>CODEN: JCPSA6</identifier><language>eng</language><publisher>United States: American Institute of Physics</publisher><subject>Calorimetry, Differential Scanning ; Chemistry, Physical - methods ; Glass ; Glycerol - chemistry ; Hydrogen Bonding ; Models, Chemical ; Molecular Conformation ; Salicylates - chemistry ; Silanes - chemistry ; Silicon Dioxide - chemistry ; Spectroscopy, Fourier Transform Infrared ; Temperature ; Terphenyl Compounds - chemistry ; Thermodynamics ; Transition Temperature</subject><ispartof>The Journal of chemical physics, 2005-11, Vol.123 (19), p.194509-194509-7</ispartof><rights>2005 American Institute of Physics</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c370t-b822e84ca02405a24944b0e8c0fa47ac343d98e0c43e00ad37d5318a5804a3873</citedby><cites>FETCH-LOGICAL-c370t-b822e84ca02405a24944b0e8c0fa47ac343d98e0c43e00ad37d5318a5804a3873</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,794,1559,4512,27924,27925</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/16321102$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Trofymluk, Olga</creatorcontrib><creatorcontrib>Levchenko, Andrey A.</creatorcontrib><creatorcontrib>Navrotsky, Alexandra</creatorcontrib><title>Interfacial effects on vitrification of confined glass-forming liquids</title><title>The Journal of chemical physics</title><addtitle>J Chem Phys</addtitle><description>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.</description><subject>Calorimetry, Differential Scanning</subject><subject>Chemistry, Physical - methods</subject><subject>Glass</subject><subject>Glycerol - chemistry</subject><subject>Hydrogen Bonding</subject><subject>Models, Chemical</subject><subject>Molecular Conformation</subject><subject>Salicylates - chemistry</subject><subject>Silanes - chemistry</subject><subject>Silicon Dioxide - chemistry</subject><subject>Spectroscopy, Fourier Transform Infrared</subject><subject>Temperature</subject><subject>Terphenyl Compounds - chemistry</subject><subject>Thermodynamics</subject><subject>Transition Temperature</subject><issn>0021-9606</issn><issn>1089-7690</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2005</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNp1kM1Kw0AURgdRbK0ufAHJSnCReucnyWThQorVQsGNrofbyUwZSTLtTCL49qY2oBtXlwvnO4tDyDWFOYWc39M5oxRolp2QKQVZpkVewimZAjCaljnkE3IR4wcA0IKJczKhOT8s2JQsV21ngkXtsE6MtUZ3MfFt8um64KzT2Lnh8zbRvrWuNVWyrTHG1PrQuHab1G7fuypekjOLdTRX452R9-XT2-IlXb8-rxaP61TzArp0IxkzUmgEJiBDJkohNmCkBouiQM0Fr0ppQAtuALDiRZVxKjGTIJDLgs_I7dG7C37fm9ipxkVt6hpb4_uocikzAaIcwLsjqIOPMRirdsE1GL4UBXWIpqgaow3szSjtN42pfsmx0gA8HIGoXfdT5H_bn55q7Mm_AXX4erw</recordid><startdate>20051115</startdate><enddate>20051115</enddate><creator>Trofymluk, Olga</creator><creator>Levchenko, Andrey A.</creator><creator>Navrotsky, Alexandra</creator><general>American Institute of Physics</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>20051115</creationdate><title>Interfacial effects on vitrification of confined glass-forming liquids</title><author>Trofymluk, Olga ; Levchenko, Andrey A. ; Navrotsky, Alexandra</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c370t-b822e84ca02405a24944b0e8c0fa47ac343d98e0c43e00ad37d5318a5804a3873</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2005</creationdate><topic>Calorimetry, Differential Scanning</topic><topic>Chemistry, Physical - methods</topic><topic>Glass</topic><topic>Glycerol - chemistry</topic><topic>Hydrogen Bonding</topic><topic>Models, Chemical</topic><topic>Molecular Conformation</topic><topic>Salicylates - chemistry</topic><topic>Silanes - chemistry</topic><topic>Silicon Dioxide - chemistry</topic><topic>Spectroscopy, Fourier Transform Infrared</topic><topic>Temperature</topic><topic>Terphenyl Compounds - chemistry</topic><topic>Thermodynamics</topic><topic>Transition Temperature</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Trofymluk, Olga</creatorcontrib><creatorcontrib>Levchenko, Andrey A.</creatorcontrib><creatorcontrib>Navrotsky, Alexandra</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>The Journal of chemical physics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Trofymluk, Olga</au><au>Levchenko, Andrey A.</au><au>Navrotsky, Alexandra</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Interfacial effects on vitrification of confined glass-forming liquids</atitle><jtitle>The Journal of chemical physics</jtitle><addtitle>J Chem Phys</addtitle><date>2005-11-15</date><risdate>2005</risdate><volume>123</volume><issue>19</issue><spage>194509</spage><epage>194509-7</epage><pages>194509-194509-7</pages><issn>0021-9606</issn><eissn>1089-7690</eissn><coden>JCPSA6</coden><abstract>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.</abstract><cop>United States</cop><pub>American Institute of Physics</pub><pmid>16321102</pmid><doi>10.1063/1.2110155</doi><tpages>1</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0021-9606 |
| ispartof | The Journal of chemical physics, 2005-11, Vol.123 (19), p.194509-194509-7 |
| issn | 0021-9606 1089-7690 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_68854049 |
| source | MEDLINE; AIP Journals Complete; AIP Digital Archive |
| subjects | Calorimetry, Differential Scanning Chemistry, Physical - methods Glass Glycerol - chemistry Hydrogen Bonding Models, Chemical Molecular Conformation Salicylates - chemistry Silanes - chemistry Silicon Dioxide - chemistry Spectroscopy, Fourier Transform Infrared Temperature Terphenyl Compounds - chemistry Thermodynamics Transition Temperature |
| title | Interfacial effects on vitrification of confined glass-forming liquids |
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