ICCAS OpenIR
Gemini surfactant/DNA complex monolayers at the air-water interface: Effect of surfactant structure on the assembly, stability, and topography of monolayers
Chen, XD; Wang, JB; Shen, N; Luo, YH; Li, L; Liu, MH; Thomas, RK
2002-08-06
Source PublicationLANGMUIR
ISSN0743-7463
Volume18Issue:16Pages:6222-6228
AbstractThe formation of complex monolayers between gemini surfactants (CsH2s-alpha,omega-(CmH2m+1N+(CH3)(2)Br-)(2), abbreviated as C12-Cs-C12, s = 3, 4, 6, 8, 10, 12) and DNA at the air-water interface was systematically investigated. The polyion-complex monolayers formed in situ through the electrostatic attraction between the ammonium groups of gemini surfactants and the phosphate groups of DNA. The effect of surfactant spacer length on the surface properties was investigated. A turning point of the surface properties (extrapolated molecular area and collapse pressure) of the gemini surfactant/DNA complex monolayers appears when the surfactant spacer is above a certain length (s = 6). The gemini surfactant spacer taking a reverse U-shape conformation at the air-water interface is proposed to interpret the turning point. A quantitative kinetic analysis of the decay curves further confirms that the turning point appears at the surfactant spacer above its critical length, s = 6. Moreover, the surface topographies of the gemini surfactant/DNA complex monolayers were controlled by the spacer length of the gemini surfactants, which may be important in surface patterning and nanofabrication.
DOI10.1021/la0256001
Indexed BySCI
Language英语
WOS IDWOS:000177224400041
PublisherAMER CHEMICAL SOC
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/78636
Collection中国科学院化学研究所
Corresponding AuthorLiu, MH
Affiliation1.Chinese Acad Sci, Inst Chem, Ctr Mol Sci, Lab Colloid & Interface Sci, Beijing 100080, Peoples R China
2.Chinese Acad Sci, Ctr Mol Sci, Inst Chem, State Key Lab Polymer Phys & Chem, Beijing 100080, Peoples R China
3.Phys & Theoret Chem Lab, Oxford OX1 3QZ, England
Recommended Citation
GB/T 7714
Chen, XD,Wang, JB,Shen, N,et al. Gemini surfactant/DNA complex monolayers at the air-water interface: Effect of surfactant structure on the assembly, stability, and topography of monolayers[J]. LANGMUIR,2002,18(16):6222-6228.
APA Chen, XD.,Wang, JB.,Shen, N.,Luo, YH.,Li, L.,...&Thomas, RK.(2002).Gemini surfactant/DNA complex monolayers at the air-water interface: Effect of surfactant structure on the assembly, stability, and topography of monolayers.LANGMUIR,18(16),6222-6228.
MLA Chen, XD,et al."Gemini surfactant/DNA complex monolayers at the air-water interface: Effect of surfactant structure on the assembly, stability, and topography of monolayers".LANGMUIR 18.16(2002):6222-6228.
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