State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, PR China.
J Colloid Interface Sci. 2010 Dec 15;352(2):278-84. doi: 10.1016/j.jcis.2010.08.054. Epub 2010 Aug 31.
The nanometer-scale luminescent monodisperse silica spheres have been prepared by a water/oil (W/O) microemulsion method and the size of these spheres changed with the different concentrations of 3-aminopropyltriethoxysilane (APTES). The luminescent monodisperse silica spheres at the submicrometer scale have been prepared via Stöber method and the particles size increased with the increase of the amino concentrations. After calcination, all silica spheres do not change obviously in size. The annealed silica spheres contain C impurities and O defects, which resulted in the luminescence of silica spheres. The spheres showed variations in emission due to the different size and the concentration of organosiloxane precursors. Therefore, the emission can be tuned finely via the change of organosiloxane precursor and the size of samples.
已通过水/油（W/O）微乳液法制备出纳米级发光单分散二氧化硅球，且这些球的尺寸会随 3-氨丙基三乙氧基硅烷（APTES）浓度的不同而变化。通过 Stöber 法制备出亚微米级发光单分散二氧化硅球，且随着氨基浓度的增加，颗粒尺寸也随之增大。煅烧后，所有二氧化硅球的尺寸均无明显变化。经退火处理的二氧化硅球含有 C 杂质和 O 缺陷，这导致了二氧化硅球的发光。由于有机硅氧烷前体的尺寸和浓度不同，这些球的发射也会发生变化。因此，通过改变有机硅氧烷前体和样品的尺寸，可以对发射进行精细调节。
