Proton-Gradient-Driven Oriented Motion of Nanodiamonds Grafted to Graphene by Dynamic Covalent Bonds

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

13 Scopus Citations
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Author(s)

  • Petr Kovaříček
  • Marek Cebecauer
  • Jitka Neburková
  • Jan Bartoň
  • Michaela Fridrichová
  • Karolina A. Drogowska
  • Petr Cigler
  • Martin Kalbac

Detail(s)

Original languageEnglish
Pages (from-to)7141-7147
Journal / PublicationACS Nano
Volume12
Issue number7
Online published11 Jun 2018
Publication statusPublished - 24 Jul 2018
Externally publishedYes

Abstract

Manipulating nanoscopic objects by external stimuli is the cornerstone of nanoscience. Here, we report the implementation of dynamic covalent chemistry in the reversible binding and directional motion of fluorescent nanodiamond particles at a functionalized graphene surface via imine linkages. The dynamic connections allow for controlling the formation and rupture of these linkages by external stimuli. By introduction of pH gradients, the nanoparticles are driven to move along the gradient due to the different rates of the imine condensation and hydrolysis in the two environments. The multivalent nature of the particle-to-surface connection ensures that particles remain attached to the surface, whereas its dynamic character allows for exchange reaction, thus leading to displacement yet bound behavior in two-dimensional space. These results open a pathway for thermodynamically controlled manipulation of objects on the nanoscale.

Research Area(s)

  • 2D materials, directional nanoparticle motion, dynamic covalent chemistry, fluorescent nanodiamonds, graphene functionalization

Citation Format(s)

Proton-Gradient-Driven Oriented Motion of Nanodiamonds Grafted to Graphene by Dynamic Covalent Bonds. / Kovaříček, Petr; Cebecauer, Marek; Neburková, Jitka et al.

In: ACS Nano, Vol. 12, No. 7, 24.07.2018, p. 7141-7147.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review