A facile methodology for the design of functionalized hollow silica spheres

作者：Melvin Ambrose; Vijay R; Chaudhari Vijay R; Gupta Bhavana; Prakash Rajiv; Haram Santosh; Baskar Geetha; Khushalani Deepa^*

来源：Journal of Colloid and Interface Science, 2010, 346(1): 265-269.

DOI：10.1016/j.jcis.2010.02.026

• Sol-gel
• Composites
• Surfactants

A new amino acid derived amphiphile, lauryl ester of tyrosine (LET) is shown to provide a facile methodology for the preparation of hollow silica spheres In a previous study on the interface adsorption, it was shown that phenolic OH group in LET plays a key role in the formation and stabilization of close packed structures, typically at the oil/water interface Drawing an analogy between the air/water and the oil/water interface, we detail here a procedure where air droplets are capped with LET aggregated structures, and in turn they are utilized as viable templates in the production of hollow silica spheres We demonstrate that hollow silica spheres are formed at pH 40 specifically under conditions of vortexing within a short period of time (Ca 15 min). The dimensions of the structures are 043 +/- 0.15 mu m in diameter and they have then subsequently been used as templates for directing the synthesis of silica-silver and silica-polyanthranilic composite hollow spheres.

• 出版日期2010-6-1