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Covalent attachment of protein to the tip of a multiwalled carbon nanotube without sidewall decoration
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10.1063/1.2802277
/content/aip/journal/jap/102/9/10.1063/1.2802277
http://aip.metastore.ingenta.com/content/aip/journal/jap/102/9/10.1063/1.2802277

Figures

Image of FIG. 1.
FIG. 1.

AFM images of (a) as-oxidized MWCNT, (b) the MWCNT incubated with EDC and then with GroEL molecules, and (c) the MWCNT after rinsing with pure water. The thick arrow in (c) indicates a protein bonded to the open-ended tip of the sharpened MWCNT.

Image of FIG. 2.
FIG. 2.

TEM image after attachment of the Qdot-streptavidin conjugates onto the open-ended MWCNTs.

Image of FIG. 3.
FIG. 3.

(Color online) Ab initio calculation for (a) the distance, , dependence of the difference of the total energy difference, , between the optimized structure and the structure at , and for (b) the dependence of the bonding force of the covalent bond. The inset in (a) depicts a model for the covalent bonds between a CNT and a protein via a carboxyl base, where is defined as the distance between the C atom of and the N atom of . Thick arrows indicate the stretching direction. Isosurfaces of the total electron density of the bonding for each state and color mapping of the molecular electrostatic potential are also shown.

Tables

Generic image for table
Table I.

Comparison of the ratio of the Qdot attachment for control experiments.

Generic image for table
Table II.

Bonding energies for each bond and their contribution to the bonding.

Generic image for table
Table III.

Bonding energies for each bonding and their contribution to the bonding. (i)–(iv) correspond to (i)–(iv) in Table I.

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/content/aip/journal/jap/102/9/10.1063/1.2802277
2007-11-01
2014-04-25
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Covalent attachment of protein to the tip of a multiwalled carbon nanotube without sidewall decoration
http://aip.metastore.ingenta.com/content/aip/journal/jap/102/9/10.1063/1.2802277
10.1063/1.2802277
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