Excess molar enthalpies of six (carbon dioxide + a polar solvent) mixtures at the temperatures 298.15 K and 308.15 K and pressures from 7.5 MPa to 12.6 MPa

1996 ◽  
Vol 28 (11) ◽  
pp. 1303-1317 ◽  
Author(s):  
Raul A. Hauser ◽  
Jian Ping Zhao ◽  
Peter R. Tremaine ◽  
Alan E. Mather
Keyword(s):  
Carbon Dioxide ◽  
Polar Solvent ◽  
Excess Molar Enthalpies ◽  
Solvent Mixtures

scholarly journals Dynamic solvatochromism in solvent mixtures

2001 ◽  
Vol 73 (3) ◽  
pp. 405-409 ◽  
Author(s):  
Diana E. Wetzler ◽  
Carlos Chesta ◽  
Roberto Fernández-Prini ◽  
Pedro F. Aramendía
Keyword(s):  
Excited State ◽  
Ground State ◽  
Emission Spectroscopy ◽  
Characteristic Time ◽  
Polar Solvent ◽  
Emission Spectra ◽  
Spectral Shift ◽  
Solvent Mixtures ◽  
Time Resolved ◽  
Different Temperatures

Solvatochromism and thermochromism of 4-aminophthalimide and 4-amino-N-methylphthalimide were studied by absorption and steady-state and time-resolved emission spectroscopy in solvent mixtures of toluene­ethanol and toluene­acetonitrile at different temperatures. Emission spectra shift to the red upon addition of a polar solvent (PS) to toluene. Solvent mixtures show a much greater thermochromic shift to the blue in emission than the neat solvents. This is explained by the decrease in temperature of the exothermic association of the polar solvent to the excited state. Emission spectra are time dependent in solvent mixtures in the ns timescale. The time evolution of this emission is interpreted on the basis of the different solvation of the ground state and the emitting excited state. Stern­Volmer plots are obtained for the dependence of the spectral-shift characteristic time with [PS].

Excess molar enthalpies for mixtures of supercritical carbon dioxide and limonene

2006 ◽  
Vol 246 (1-2) ◽  
pp. 153-157 ◽  
Author(s):  
Yolanda Sánchez-Vicente ◽  
Eduardo Pérez ◽  
Albertina Cabañas ◽  
José S. Urieta ◽  
Juan A.R. Renuncio ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Supercritical Carbon Dioxide ◽  
Excess Molar Enthalpies ◽  
Supercritical Carbon

Excess molar enthalpies for mixtures of carbon dioxide+a modifier (5mol% methanol or 1-octanol) and hexane at 308.15K and 12.40MPa

2006 ◽  
Vol 241 (1-2) ◽  
pp. 283-289 ◽  
Author(s):  
Eduardo Pérez ◽  
Yolanda Sánchez-Vicente ◽  
Albertina Cabañas ◽  
Mario Redondo ◽  
Concepción Pando ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Excess Molar Enthalpies
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