Baudot A, Alger L, Boutron P
Centre de Recherches sur les Très Basses Températures, C.N.R.S., Grenoble Cedex 9, 38042, France.
Cryobiology. 2000 Mar;40(2):151-8. doi: 10.1006/cryo.2000.2234.
The glass-forming tendency on cooling and the stability of the wholly amorphous state on warming have been previously reported for many cryoprotective solutions. However, unlike the other solutions, those of dimethyl sulfoxide (Me(2)SO) have not been studied on cooling. In this paper, the glass-forming tendency of Me(2)SO aqueous solutions has been measured for solutions containing 40, 43, 45, and 47.5% (w/w) Me(2)SO. At a concentration of 45% (w/w), the glass-forming tendency decreases in the following order: levo-2, 3-butanediol, 1,3-butanediol, 1,2-propanediol, 1,2,3-butanetriol, dimethyl sulfoxide, dimethylformamide, diethylformamide, 1, 4-butanediol, ethylene glycol, glycerol, 1,3-propanediol. New measurements have also been made on warming the Me(2)SO solutions.
先前已有许多关于低温保护溶液冷却时的玻璃形成倾向以及升温时完全非晶态稳定性的报道。然而，与其他溶液不同的是，二甲基亚砜（Me(2)SO）溶液在冷却方面尚未得到研究。本文测定了含40%、43%、45%和47.5%（w/w）二甲基亚砜的水溶液的玻璃形成倾向。在浓度为45%（w/w）时，玻璃形成倾向按以下顺序降低：左旋-2,3-丁二醇、1,3-丁二醇、1,2-丙二醇、1,2,3-丁三醇、二甲基亚砜、二甲基甲酰胺、二乙基甲酰胺、1,4-丁二醇、乙二醇、甘油、1,3-丙二醇。还对二甲基亚砜溶液升温进行了新的测量。
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