Fabrication of Fluorescent Silica Nanoparticles Hybridized with AIE Luminogens and Exploration of Their Applications as Nanobiosensors in Intracellular Imaging
作者:Mahtab Faisal、Yuning Hong、Jianzhao Liu、Yong Yu、Jacky W. Y. Lam、Anjun Qin、Ping Lu、Ben Zhong Tang
DOI:10.1002/chem.200901823
日期:2010.4.12
Highly emissive inorganic–organic nanoparticles with core–shell structures are fabricated by a one‐pot, surfactant‐free hybridization process. The surfactant‐free sol–gel reactions of tetraphenylethene‐ (TPE) and silole‐functionalized siloxanes followed by reactions with tetraethoxysilane afford fluorescent silica nanoparticles FSNP‐1 and FSNP‐2, respectively. The FSNPs are uniformly sized, surface‐charged
高发射性的无机-有机纳米颗粒具有核-壳结构,是通过单锅,无表面活性剂的杂交过程制备的。四苯基乙烯(TPE)和甲硅烷基官能化的硅氧烷的无表面活性剂溶胶凝胶反应,然后与四乙氧基硅烷反应,得到了荧光二氧化硅纳米颗粒FSNP- 1和FSNP- 2, 分别。FSNP尺寸均匀,表面带电且胶体稳定。通过改变反应条件,FSNP的直径可在45–295 nm范围内调节。尽管它们的TPE和硅溶胶前体是非发射性的,但由于杂化纳米粒子中TPE和硅溶胶团聚体的新型聚集诱导发射(AIE)特性,FSNP在可见光下会强烈发射。FSNP对活细胞没有毒性,可用于选择性成像HeLa细胞的细胞质。