| Study on the interaction between silver nanoparticles and nucleic acids in the presence of cetyltrimethylammonium bromide and its analytical application. | |
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MedLine Citation:
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PMID: 18371671 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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A novel method is proposed in this paper, that is the silver nanoparticle (nanoAg)-cetyltrimethylammonium bromide (CTMAB) is used as the probe of resonance light scattering (RLS) for the determination of nucleic acids. Under optimum conditions, there are linear relationships between the quenching extent of RLS and the concentration of nucleic acids in the range of 4.0x10(-9)-2.0x10(-6)gmL(-1) for fish sperm DNA (fsDNA), 7.0x10(-9)-1.8x10(-6)gmL(-1) for calf thymus DNA (ctDNA) and 6.0x10(-9)-1.0x10(-6)gmL(-1) for yeast RNA (yRNA). The detection limits (S/N=3) of fsDNA, ctDNA and yRNA are 2.7x10(-10)gmL(-1), 4.8x10(-10)gmL(-1) and 7.2x10(-10)gmL(-1), respectively. The studies indicate that there are interactions among nanoAg, CTMAB and fsDNA through electrostatic and chemical affinity, and the nanoAg-CTMAB complex can induce the structural change of base stacking and helicity of fsDNA. |
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Authors:
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Jinhua Zheng; Xia Wu; Minqin Wang; Dehuan Ran; Wei Xu; Jinhe Yang |
Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2007-06-19 |
Journal Detail:
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Title: Talanta Volume: 74 ISSN: 1873-3573 ISO Abbreviation: Talanta Publication Date: 2008 Jan |
Date Detail:
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Created Date: 2008-03-28 Completed Date: 2008-08-26 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 2984816R Medline TA: Talanta Country: England |
Other Details:
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Languages: eng Pagination: 526-32 Citation Subset: IM |
Affiliation:
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Key Laboratory of Colloid and Interface Chemistry (Shandong University), Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, Shandong, PR China. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Calibration Cetrimonium Compounds / chemistry* Hydrogen-Ion Concentration Metal Nanoparticles* Nucleic Acids / chemistry* Sensitivity and Specificity Silver / chemistry* |
| Chemical | |
Reg. No./Substance:
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0/Cetrimonium Compounds; 0/Nucleic Acids; 6899-10-1/cetrimonium; 7440-22-4/Silver |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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