DNA multilayer films on planar and colloidal supports: Sequential assembly of like-charged polyelectrolytes

被引：182

作者：

Johnston, APR ^{[1
]}

Read, ES ^{[1
]}

Caruso, F ^{[1
]}

机构：

[1] Univ Melbourne, Ctr Nanosci & Nanotechnol, Dept Chem & Biomol Engn, Melbourne, Vic 3010, Australia

来源：

NANO LETTERS | 2005年 / 5卷 / 05期

关键词：

D O I：

10.1021/nl050608b

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Multilayer films comprising solely negatively charged polyelectrolytes were sequentially assembled based on DNA hybridization. Films prepared from alternating layers of two-block homopolymeric nucleotides (polyA(20)G(20)/polyT(20)C(20)) grew linearly with increasing layer number, as verified by quartz crystal microgravimetry, UV-vis spectrophotometry and optical microscopy. Urea treatment of the films induced morphological changes, while exposure to low ionic strength solutions resulted in film disassembly. DNA multilayer films were also formed on silica particles, and DNA hollow capsules were obtained following dissolution of the template core.

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页码：953 / 956

页数：4

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