Biomimetic micropatterning of silica by surface-initiated polymerization and microcontact printing
Biomimetic micropatterning of silica by surface-initiated polymerization and microcontact printing
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DOI：
10.1002/smll.200400157
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发表时间：
2005-09-01
期刊：
影响因子：
13.3
通讯作者：
Choi, IS
中科院分区：
文献类型：
--
作者：
Kim, DJ;Lee, KB;Choi, IS
Micropatterns of silica on a gold substrate were generated by a biomimetic approach, namely, the biosilicification of silicic acids. The procedure consists of three simple steps: pattern generation of a polymerization initiator, (BrC(CH3)(2)COO(CH2)(11)S)(2), by microcontact printing; surface-initiated, atom-transfer radical polymerization of 2-(dimethylamino) ethyl methacrylate (DMAEMA) from the patterned area; and polycondensation of silicic acids. The tertiary amine-containing polymer, pDMAEMA, aided in the spatially controlled polycondensation of silicic acids on surfaces in the presence of phosphate ions, and micropatterns of silica on a gold substrate were successfully generated in combination with the technique of microcontact printing. The procedure could be extended to the controlled fabrication of silica patterns with any size, shape, or thickness.
