One-pot exfoliation of graphite and synthesis of nanographene/dimesitylporphyrin hybrids.

M. Bernal,Emilio Pérez

doi:10.3390/ijms160510704

M. Bernal, Emilio Pérez

Open Access

https://doi.org/10.3390/ijms160510704

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Journal: International journal of molecular sciences	Publication Date: May 12, 2015
Citations: 17	License type: CC BY 4.0

Affiliation: IMDEA Nanoscience

Abstract

A simple one-pot process to exfoliate graphite and synthesize nanographene-dimesitylporphyrin hybrids has been developed. Despite the bulky mesityl groups, which are expected to hinder the efficient π–π stacking between the porphyrin core and graphene, the liquid-phase exfoliation of graphite is significantly favored by the presence of the porphyrins. Metallation of the porphyrin further enhances this effect. The resulting graphene/porphyrin hybrids were characterized by spectroscopy (UV-visible, fluorescence, and Raman) and microscopy (STEM, scanning transmission electron microscopy).

Highlights

IntroductionOne-atom thick sheet of sp hybridized carbon atoms arranged in a honeycomb lattice, has emerged as an attractive 2D nanomaterial owing to its outstanding physicochemical properties [1,2,3,4,5,6,7,8]
Graphene, one-atom thick sheet of sp2 hybridized carbon atoms arranged in a honeycomb lattice, has emerged as an attractive 2D nanomaterial owing to its outstanding physicochemical properties [1,2,3,4,5,6,7,8].Several synthetic routes to produce graphene have been developed in the last few years [9,10], but the most straightforward method of production is still the exfoliation from graphite, a natural and abundant source of carbon
The main aim of our study was to investigate if bulky substituents in the meso positions of the porphyrins would be detrimental for their interaction with graphene

Summary

Introduction

One-atom thick sheet of sp hybridized carbon atoms arranged in a honeycomb lattice, has emerged as an attractive 2D nanomaterial owing to its outstanding physicochemical properties [1,2,3,4,5,6,7,8]. Several synthetic routes to produce graphene have been developed in the last few years [9,10], but the most straightforward method of production is still the exfoliation from graphite, a natural and abundant source of carbon. It is necessary to disrupt these non-covalent forces without sacrificing the sp conjugated network responsible of its unique electronic properties [11,12]. Sci. 2015, 16 problem [13,14], micromechanical cleavage [4,15] and liquid-phase exfoliation of graphite [16,17]

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