CAS OpenIR  > 中科院上海应用物理研究所2011-2019年
Coordination-Mediated Programmable Assembly of Unmodified Oligonucleotides on Plasmonic Silver Nanoparticles
Zhu, D; Chao, J; Pei, H; Zuo, XL; Huang, Q; Wang, LH; Huang, W; Fan, CH
2015
Source PublicationACS APPLIED MATERIALS & INTERFACES
Volume7Issue:20Pages:11047—11052
Subtype期刊文献
AbstractDNA-decorated metal nanoparticles have found numerous applications, most of which rely on thiolated DNA (SH-DNA)-modified gold nanoparticles (AuNPs). Whereas silver nanoparticles (AgNPs) are known to have stronger plasmonic properties than AuNPs, modification of AgNPs with SH-DNA is technically challenging, partially due to the instability of Ag-S bonding. Here we demonstrate a facile approach to self-assemble unmodified DNA on AgNPs by exploiting intrinsic silver-cytosine (Ag-C) coordination. the strong Ag-C coordination allows for the ready formation of DNA-AgNP conjugates, which show favorable stability under conditions of high ionic strength and high temperature. These nanoconjugates possess much higher efficient molecular recognition capability and faster hybridization kinetics than thiolated DNA-modified AgNPs. More importantly, we could programmably tune the DNA density on AgNPs with the regulation of silver-cytosine coordination numbers, which in turn modulated their hybridizability. We further demonstrated that these DNA-AgNP conjugates could serve as excellent building blocks for assembling silver and hybrid silver-gold nanostructures with superior plasmonic properties.
KeywordGold Nanoparticles Metal Coordination Artificial Dna Protein Nanostructures Nanocrystals Scattering
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/24418
Collection中科院上海应用物理研究所2011-2019年
Recommended Citation
GB/T 7714
Zhu, D,Chao, J,Pei, H,et al. Coordination-Mediated Programmable Assembly of Unmodified Oligonucleotides on Plasmonic Silver Nanoparticles[J]. ACS APPLIED MATERIALS & INTERFACES,2015,7(20):11047—11052.
APA Zhu, D.,Chao, J.,Pei, H.,Zuo, XL.,Huang, Q.,...&Fan, CH.(2015).Coordination-Mediated Programmable Assembly of Unmodified Oligonucleotides on Plasmonic Silver Nanoparticles.ACS APPLIED MATERIALS & INTERFACES,7(20),11047—11052.
MLA Zhu, D,et al."Coordination-Mediated Programmable Assembly of Unmodified Oligonucleotides on Plasmonic Silver Nanoparticles".ACS APPLIED MATERIALS & INTERFACES 7.20(2015):11047—11052.
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