Phase Change Enthalpies and Entropies of Liquid Crystals Page: 1,089
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PHASE CHANGE ENTHALPIES AND ENTROPIES OF LIQUID CRYSTALS 1089
TABLE 11. The solid-liquid phase change properties of liquid crystals-Continued
Compound
STfus (erp) 0 Tfus
AHpce ~0 Stpce (exp) 0 Stpce
Molecular Formula Transition T (K) (kJ. mol -1) Spce (J. K-1 mol 1) (estimated) Ref.
Smec/Nem 306.4 0.02 0.07
Nem/Liq 313.8 0.63 2.01 78.89 112.1 [33, 157]
Independent values from another reference
Sol/Smec 292.9 29.16 99.56
Smec/Nem 306.3 0.08 0.26
Nem/Liq 312.4 0.88 2.82 102.64 112.1 [233]
Independent values from another reference
Sol/Smec 295.0 23.43 79.42
Smec/Nem 307.0 0.04 0.13
Nem/Liq 313.0 0.67 2.14 81.69 112.1 [237]
Independent values from another reference
Sol/Smec 294.4 25.7 87.30
Smec/Nem 307.0 0.40 1.30
Nem/Liq 313.9 0.61 1.94 90.54 112.1 [358]
Independent values from another reference
Sol/Smec 297.2 25.3 85.13
Smec/Nem 307.2 0.13 0.42
Nem/Liq 315.8 0.97 3.07 88.62 112.1 [365]
Independent values from another reference
Sol/Smec 294.4 25.7 87.30
Smec/Nem 307.2 Too small to be measured
Nem/Liq 313.7 0.61 1.94 89.24 112.1 [387]
C21H25NO 4-octyloxy-4'-cyanobiphenyl
Sol/Smec 327.7 26.65 81.32
Smec/Nem 340.4 0.03 0.09
Nem/Liq 353.4 0.63 1.78 83.19 116.8 [33]
Independent values from another reference
Sol/Smec 326.1 29.79 91.35
Smec/Nem 339.9 0.04 0.12
Nem/Liq 352.6 0.88 2.50 93.97 116.8 [233]
Independent values from another reference
Sol/Smec (I) 330.2 43.93 133.04
Sol/Smec (II) 323.2 49.37 152.75
Smec/Liq Not reported in paper 116.8 [372]
C21H25NO3 4- (4-heptyloxyphenyliminomethyl)benzoic acid
Sol/Smec 463.2 14.5 31.30
Smec/Nem 528.2 Not reported in paper
Nem/Liq 534.2 16.3 30.51 [416]
C21H25NO5 4-nitrophenyl-4'-octyloxybenzoate
Sol/Smec 323.2 34.72 107.43
Smec/Nem 334.0 0.09 0.27
Nem/Liq 341.0 0.29 0.85 108.55 126.6 [157]
C21H25NO5 4-octyloxyphenyl 4-nitrobenzoate
Sol/Smec 337.2 22.80 67.62
Smec/Nem 344.2 0.04 0.12
Nem/Liq 346.4 2.30 6.64 74.38 126.6 [236]C21H25NS 4-octyl-4'-thiocyanatobiphenyl
Sol/Meso 303.6 18.40 60.61
Meso/Liq 342.6 10.13 29.57 90.18 NA [84]
J. Phys. Chem. Ref. Data, Vol. 35, No. 3, 2006Downloaded 25 Feb 2013 to 129. 120.139.109. Redistribution subject to AIP license or copyright; see http://jpcrd.aip.orgabout/rights_and_permissions
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Acree, William E. (William Eugene) & Chickos, James S. Phase Change Enthalpies and Entropies of Liquid Crystals, article, July 17, 2006; [College Park, Maryland]. (https://digital.library.unt.edu/ark:/67531/metadc172344/m1/39/: accessed April 19, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT College of Arts and Sciences.