Aligned porous materials by directional freezing of solutions in liquid CO2

J Am Chem Soc. 2005 Oct 5;127(39):13482-3. doi: 10.1021/ja054353f.


We report here a method for generating structures with aligned macropores by templating solidified carbon dioxide. The CO2 template phase can be removed by direct sublimation to yield a dry, solvent-free porous material that may be useful in applications such as tissue engineering and aligned cell growth.