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Shin, Hyeon Suk
Lab for Carbon and 2D Materials
Research Interests
  • Two-dimensional materials: graphene, transition metal dichalcogenides, h-BN, and their heterostructures


"Fingertip"-Guided noncovalent functionalization of carbon nanotubes by dendrons

DC Field Value Language Woo, Sungwook ko Lee, Yoonmi ko Sunkara, Vijaya ko Cheedarala, Ravi Kumar ko Shin, Hyeon Suk ko Choi, Hee Cheul ko Park, Joon Won ko 2014-09-11T07:01:19Z - 2014-09-04 ko 2007-11 ko
dc.identifier.citation LANGMUIR, v.23, no.23, pp.11373 - 11376 ko
dc.identifier.issn 0743-7463 ko
dc.identifier.uri -
dc.description.abstract Noncovalent functionalization of carbon nanotubes (CNTs) by dendrons was demonstrated. Certain types of dendrons successfully functionalized CNT surfaces through the noncovalent interactions between the peripheries of the dendrons and the sidewalls of CNTs. Dendrons have a unique anisotropic shape and an orthogonal functional group at their apex, and thus can generate a certain spacing between the functional groups upon immobilization on surfaces. Atomic force microscope (AFM) imaging, dispersion experiments, and MicroRaman spectroscopy were employed for the characterization of the functionalization. The binding was found to be governed by the chemical nature of the terminal groups, namely, the "fingertips", through a comparison study on the adsorption efficiency of the dendron analogs. Functional groups such as the carboxylic acid group and the benzyl amide group were effective for the cooperative binding. AFM analysis showed that the average spacing generated by the dendrons was 14-15 nm at a particular adsorption condition. Assembling streptavidin on the tubes through the dendrons and biotin confirmed the realization of the regulated spacing as well as the elimination of unwanted aggregation. The noncovalent functionalization of CNTs by a dendron can be a new approach toward sensible nanobiodevices, not only by introducing biomolecular probes on CNTs without disruption of the electronic network of the tubes, but also by providing the immobilized probe molecules with a space ample enough to minimize steric hindrance for the unhindered interaction with their target species. ko
dc.description.statementofresponsibility close -
dc.language 영어 ko
dc.publisher AMER CHEMICAL SOC ko
dc.title "Fingertip"-Guided noncovalent functionalization of carbon nanotubes by dendrons ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-36248946262 ko
dc.identifier.wosid 000250584500008 ko
dc.type.rims ART ko
dc.description.wostc 10 *
dc.description.scopustc 11 * 2015-05-06 * 2014-09-04 *
dc.identifier.doi 10.1021/la701968y ko
dc.identifier.url ko
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