Vapor pressure of Buckminsterfullerene
The vapor pressures of the fullerenes C60 and C70 have been measured over the temperature range 400–600 °C by the Knudsen-effusion thermogravimetric technique. For C60, a heat of sublimation of 38±1 kcal/mol is obtained, and the value for C70 is 45±1 kcal/mol. The vapor pressure of C60 ranges from 1...
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| Veröffentlicht in: | Applied physics letters 1992-03, Vol.60 (11), p.1313-1314 |
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| container_title | Applied physics letters |
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| creator | ABREFAH, J OLANDER, D. R BALOOCH, M SIEKHAUS, W. J |
| description | The vapor pressures of the fullerenes C60 and C70 have been measured over the temperature range 400–600 °C by the Knudsen-effusion thermogravimetric technique. For C60, a heat of sublimation of 38±1 kcal/mol is obtained, and the value for C70 is 45±1 kcal/mol. The vapor pressure of C60 ranges from 1.8×10−5 and 1.4×10−2 Torr and that of C70 is between 1.4×10−5 and 8.7×10−3 Torr over the temperature range investigated. At 500 °C, the vapor pressure of C60 is about 1035 that of graphite. The entropy of vaporization of C60 obeys Trouton’s rule. |
| doi_str_mv | 10.1063/1.107327 |
| format | Article |
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R</creatorcontrib><creatorcontrib>BALOOCH, M</creatorcontrib><creatorcontrib>SIEKHAUS, W. J</creatorcontrib><title>Vapor pressure of Buckminsterfullerene</title><title>Applied physics letters</title><description>The vapor pressures of the fullerenes C60 and C70 have been measured over the temperature range 400–600 °C by the Knudsen-effusion thermogravimetric technique. For C60, a heat of sublimation of 38±1 kcal/mol is obtained, and the value for C70 is 45±1 kcal/mol. The vapor pressure of C60 ranges from 1.8×10−5 and 1.4×10−2 Torr and that of C70 is between 1.4×10−5 and 8.7×10−3 Torr over the temperature range investigated. At 500 °C, the vapor pressure of C60 is about 1035 that of graphite. 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R</creatorcontrib><creatorcontrib>BALOOCH, M</creatorcontrib><creatorcontrib>SIEKHAUS, W. J</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>OSTI.GOV</collection><jtitle>Applied physics letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>ABREFAH, J</au><au>OLANDER, D. R</au><au>BALOOCH, M</au><au>SIEKHAUS, W. J</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Vapor pressure of Buckminsterfullerene</atitle><jtitle>Applied physics letters</jtitle><date>1992-03-16</date><risdate>1992</risdate><volume>60</volume><issue>11</issue><spage>1313</spage><epage>1314</epage><pages>1313-1314</pages><issn>0003-6951</issn><eissn>1077-3118</eissn><coden>APPLAB</coden><abstract>The vapor pressures of the fullerenes C60 and C70 have been measured over the temperature range 400–600 °C by the Knudsen-effusion thermogravimetric technique. For C60, a heat of sublimation of 38±1 kcal/mol is obtained, and the value for C70 is 45±1 kcal/mol. The vapor pressure of C60 ranges from 1.8×10−5 and 1.4×10−2 Torr and that of C70 is between 1.4×10−5 and 8.7×10−3 Torr over the temperature range investigated. At 500 °C, the vapor pressure of C60 is about 1035 that of graphite. The entropy of vaporization of C60 obeys Trouton’s rule.</abstract><cop>Melville, NY</cop><pub>American Institute of Physics</pub><doi>10.1063/1.107327</doi><tpages>2</tpages></addata></record> |
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| ispartof | Applied physics letters, 1992-03, Vol.60 (11), p.1313-1314 |
| issn | 0003-6951 1077-3118 |
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| source | AIP Digital Archive |
| subjects | 360606 - Other Materials- Physical Properties- (1992-) CARBON Chemistry CRYSTALS ELEMENTS ENTHALPY ENTROPY EVAPORATION Exact sciences and technology FULLERENES General and physical chemistry KNUDSEN GAGES MATERIALS SCIENCE MEASURING INSTRUMENTS MOLECULAR CRYSTALS NONMETALS Others (including liquid-liquid-vapor equilibria) Phase equilibria PHASE TRANSFORMATIONS PHYSICAL PROPERTIES PRESSURE GAGES SUBLIMATION HEAT TEMPERATURE RANGE TEMPERATURE RANGE 0400-1000 K THERMODYNAMIC PROPERTIES TRANSITION HEAT VACUUM GAGES VAPOR PRESSURE |
| title | Vapor pressure of Buckminsterfullerene |
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