出版日期：2008-06-01 00:00:00

著者：Su, Chun-jen; Yeh, Sheng-wei; Lai, Wei-chi; Chen, Hsin-lung; M. Habibur Rahman; Wu, Ren-jye; Lin, Hsien-kuang; Liu, Wen-liang

單位：淡江大學化學工程與材料工程學系

出版者：RSC Publishing

著錄名稱、卷期、頁數：Soft Matter 4(6), pp.1306-1312

摘要：Deoxyribonucleic acid (DNA) is an attractive building block for self-assembled nanostructures, because the anionic phosphate group and the base moiety allow it to bind with a broad spectrum of organic and inorganic species through ionic and hydrogen bonding. Here we present a hierarchical structure formed by the ionic complex of DNA with an amphiphilic block copolymer comprising a cationic block. Upon the complexation the cationic block chains wrap around DNA for charge matching and the microphase separation between the hydrophobic block and the hydrophilic component yields a multilamellar structure with liquid crystalline ordering of the DNA chains condensed in the hydrophilic microdomains. Each hydrophilic lamellar domain is found to contain two DNA sublayers separated by a thin water gap, with each sublayer comprising two rows of densely packed DNA chains to lower the interfacial free energy for the present system with strong polar–nonpolar repulsion.

語言：en

ISSN：1744-683X