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Structure and switching of single-stranded DNA tethered to a charged nanoparticle surface
Zhao, Xin-Jun1,2,3; Gao, Zhi-Fu4
2016-07-01
Source PublicationCHINESE PHYSICS B
ISSN1674-1056
Volume25Issue:7Pages:074702
Contribution Rank4
Abstract

Using a molecular theory, we investigate the temperature-dependent self-assembly of single-stranded DNA (ssDNA) tethered to a charged nanoparticle surface. Here the size, conformations, and charge properties of ssDNA are taken into account. The main results are as follows: i) when the temperature is lower than the critical switching temperature, the ssDNA will collapse due to the existence of electrostatic interaction between ssDNA and charged nanoparticle surface; ii) for the short ssDNA chains with the number of bases less than 10, the switching of ssDNA cannot happen, and the critical temperature does not exist; iii) when the temperature increases, the electrostatic attractive interaction between ssDNA and charged nanoparticle surface becomes weak dramatically, and ssDNA chains will stretch if the electrostatic attractive interaction is insufficient to overcome the elastic energy of ssDNA and the electrostatic repulsion energy. These findings accord well with the experimental observations. It is predicted that the switching of ssDNA will not happen if the grafting densities are too high.

Correspondent Emailzhaoxinjunzxj@163.com
KeywordMolecular Theory Ssdna Tethered To Charged Nanoparticle Surface Temperature-dependent Switching
SubtypeArticle
DOI10.1088/1674-1056/25/7/074702
WOS HeadingsScience & Technology ; Physical Sciences
Indexed BySCI
Language英语
WOS KeywordMesoporous Silica ; Controlled-release ; Polymer Layers ; Recognition ; Molecules ; System ; Rna
WOS Research AreaPhysics
WOS SubjectPhysics, Multidisciplinary
WOS IDWOS:000384225800027
Funding OrganizationJoint Funds of Xinjiang Natural Science Foundation, China(2015211C298)
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.xao.ac.cn/handle/45760611-7/1417
Collection射电天文研究室_脉冲星研究团组
射电天文研究室
Corresponding AuthorZhao, Xin-Jun
Affiliation1.Yi Li Normal Univ, Xinjiang Lab Phase Transit & Microstruct Condense, Yining 835000, Peoples R China
2.Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Jiangsu, Peoples R China
3.Nanjing Univ, Dept Phys, Nanjing 210093, Jiangsu, Peoples R China
4.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China
Recommended Citation
GB/T 7714
Zhao, Xin-Jun,Gao, Zhi-Fu. Structure and switching of single-stranded DNA tethered to a charged nanoparticle surface[J]. CHINESE PHYSICS B,2016,25(7):074702.
APA Zhao, Xin-Jun,&Gao, Zhi-Fu.(2016).Structure and switching of single-stranded DNA tethered to a charged nanoparticle surface.CHINESE PHYSICS B,25(7),074702.
MLA Zhao, Xin-Jun,et al."Structure and switching of single-stranded DNA tethered to a charged nanoparticle surface".CHINESE PHYSICS B 25.7(2016):074702.
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