Molecular discriminators using single wall carbon nanotubes

Bhattacharyya, Tamoghna ; Dasgupta, Anjan Kr ; Ray, Nihar Ranjan ; Sarkar, Sabyasachi (2012) Molecular discriminators using single wall carbon nanotubes Nanotechnology, 23 (38). p. 385304. ISSN 0957-4484

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Official URL: http://iopscience.iop.org/0957-4484/23/38/385304/

Related URL: http://dx.doi.org/10.1088/0957-4484/23/38/385304

Abstract

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.

Item Type:Article
Source:Copyright of this article belongs to Institute of Physics Publishing.
ID Code:98318
Deposited On:21 May 2014 10:29
Last Modified:21 May 2014 10:29

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