Reversible gold nanorod assembly triggered by pH-responsive DNA nanomachine

Zhao, Dan; Zhang, Zhiliang; Wen, Yongqiang; Zhang, Xueji; Song, Yanlin
March 2013
Applied Physics Letters;3/25/2013, Vol. 102 Issue 12, p123101
Academic Journal
In this work, highly reversible end-to-end assembly of gold nanorods (AuNRs) has been achieved based on pH-responsive DNA nanomachine. In this system, the polyvalent linkages between AuNRs and duple cyclic disulfide group-modified DNA molecules tremendously enhanced the stability of the AuNRs-DNA conjugates. The excellent controllability and reproducibility of the assembly was demonstrated through consecutive assembly/disassembly cycles. This strategy is expected to be used for precise construction and manipulation of more complex functional nanodevices.


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