Nanoscale. 2015 Jan 21;7(3):1193-200. doi: 10.1039/c4nr04365k.

Electroactive carbon nanoforms: a comparative study via sequential arylation and click chemistry reactions.

Nanoscale

Jaime Mateos-Gil, Laura Rodríguez-Pérez, María Moreno Oliva, Georgios Katsukis, Carlos Romero-Nieto, Ma Ángeles Herranz, Dirk M Guldi, Nazario Martín

PMID: 25488718 DOI: 10.1039/c4nr04365k

Abstract

The reactivity of several carbon nanoforms (CNFs), single-walled carbon nanotubes (SWCNTs), multi-walled carbon nanotubes (MWCNTs) and graphene, has been investigated through a combination of arylation and click chemistry Cu(I)-mediated azide-alkyne cycloaddition (CuAAC) reactions. The approach is based on the incorporation of electroactive π-extended tetrathiafulvalene (exTTF) units into the triazole linkers to modulate the electronic properties of the obtained conjugates. The introduction of strain, by bending the planar graphene sheet into a 3D carbon framework, is responsible for the singular reactivity observed in carbon nanotubes. The formed nanoconjugates were fully characterized by analytical, spectroscopic, and microscopic techniques (TGA, FTIR, Raman, UV-Vis-NIR, cyclic voltammetry, TEM and XPS). In the case of SWCNT conjugates, where the functionalization degree is higher, a series of steady-state and time resolved spectroscopy experiments revealed a photoinduced electron transfer from the exTTF unit to the electron-accepting SWCNT.

Publication Types

• Journal Article
• Research Support, Non-U.S. Gov't