Aggregation-Induced Emission Gemini Surfactant-Assisted Fabrication of Shape-Controlled Fluorescent Hollow Mesoporous Silica Nanoparticles

作者：Yan, Saisai; Gao, Zhinong^*; Xia, Yan; Liao, Xueming; Han, Jia; Pan, Chenchen; Zhang, Yingfang; Zhai, Wenzhong

来源：European Journal of Inorganic Chemistry, 2018, 2018(18): 1891-1901.

DOI：10.1002/ejic.201800280

• Aggregation-induced emission
• Fluorescence
• Mesoporous materials
• Nanoparticles
• Gemini surfactants

The development of particles that possess different properties has been a long-thought goal for producing multifunctional materials owing to their combination of performance. Herein, aggregation-induced emission (AIE) gemini surfactant- assisted preparation of shape-controlled fluorescent hollow silica nanoparticles (AIE-SNs) is performed directly in water through a one-pot method. The incorporated AIE gemini surfactant (C-16-TPE-C-16) not only provides a fluorophore for the AIE-SNs but also participates in the structure-directing process with cetyltrimethylammonium bromide (CTAB) to regulate their construction. By properly tuning the molar ratio of CTAB and C-16-TPE-C-16, AIE-SNs with different morphologies and fluorescence properties can be produced. Their mesoporous silica nanoparticle (AIE-MSN) derivatives can also be fabricated by subsequent extraction owing to the inherent structural differences between CTAB and C-16-TPE-C-16. Importantly, fluorescent hollow mesoporous silica nanorods and nanospheres with ordered channels, thin shell thicknesses (similar to 13 and similar to 7 nm), high accessible surface areas (599.2 and 573.9 m(2) g(-1)), and uniform pore sizes similar to 2.8 nm) can be facilely prepared at CTAB/C-16-TPE-C-16 molar ratios of 30:1 and 15:1, respectively. This facile and straightforward method for creating tunable hollow AIE-MSNs may open viable opportunities and inspire the preparation of particles with multiple properties.

• 出版日期2018-5-15
• 单位武汉大学