Department of Chemistry, Lehigh University, Bethlehem, PA 18015, USA.
Chem Commun (Camb). 2010 Dec 14;46(46):8815-7. doi: 10.1039/c0cc03096a. Epub 2010 Oct 18.
Coesite nanocrystals have been synthesized from periodic mesoporous organosilica (PMO) with (CH(2))(2) bridges heated at 300 °C for 150 min and 12 GPa. The crystals are not sintered, single crystalline, and have diameters of ca. 100-300 nm. Below 300 °C, an amorphous non-porous organosilica glass was obtained. Heating above 300 °C at 12 GPa results in the rapid crystal growth and micron size coesite crystals were formed.
介孔有机硅(PMO)在(CH(2))(2)桥加热 300°C 150 分钟和 12 GPa 的条件下可以合成柯石英纳米晶体。这些晶体没有烧结,是单晶,直径约为 100-300nm。在 300°C 以下,得到无定形无孔有机硅玻璃。在 12 GPa 以上加热至 300°C 以上会导致晶体快速生长,形成微米级的柯石英晶体。