Molecular discriminators using single wall carbon nanotubes

The interaction between single wall carbon nanotubes (SWNTs) and amphiphilic molecules has been studied in a solid phase. SWNTs are allowed to interact with different amphiphilic probes (e.g. lipids) in a narrow capillary interface. Contact between strong hydrophobic and amphiphilic interfaces leads...

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Bibliographic Details
Published in:Nanotechnology 2012-09, Vol.23 (38), p.385304-385304
Main Authors: Bhattacharyya, Tamoghna, Dasgupta, Anjan Kr, Ray, Nihar Ranjan, Sarkar, Sabyasachi
Format: Article
Language:English
Subjects:
Binding Sites
Company structure
Contact
Diffusion
Diffusion rate
Lecithin
Lipids
Lipids - analysis
Lipids - chemistry
Materials Testing
Molecular Probe Techniques
Molecular Probes - chemistry
Nanostructures - chemistry
Single wall carbon nanotubes
Solid phases
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Summary:The interaction between single wall carbon nanotubes (SWNTs) and amphiphilic molecules has been studied in a solid phase. SWNTs are allowed to interact with different amphiphilic probes (e.g. lipids) in a narrow capillary interface. Contact between strong hydrophobic and amphiphilic interfaces leads to a molecular restructuring of the lipids at the interface. The geometry of the diffusion front and the rate and the extent of diffusion of the interface are dependent on the structure of the lipid at the interface. Lecithin having a linear tail showed greater mobility of the interface as compared to a branched tail lipid like dipalmitoyl phosphatidylcholine, indicating the hydrophobic interaction between single wall carbon nanotube core and the hydrophobic tail of the lipid. Solid phase interactions between SWNT and lipids can thus become a very simple but efficient means of discriminating amphiphilic molecules in general and lipids in particular.
ISSN:0957-4484
1361-6528
DOI:10.1088/0957-4484/23/38/385304