Effect of Structure of Monocyclic Aromatic Solvents on the Packing Density of Fullerene Solvation Shell

E V Chubarova,E Yu Melenevskaya

doi:10.5402/2012/906976

Abstract

Fullerene C60 solutions in various monocyclic aromatic solvents (AS) diluted by tetrahydrofurane (THF) were studied using UV spectroscopy. An algorithm was proposed which made it possible to obtain the data from the UV spectra of (C60+AS) solutions in THF which pointed to the difference between the packing density of AS molecules in solvation shell of C60 and that in the pure AS solvent. The presence of asymmetrical substituents in the AS molecule has been shown to result in loosening of solvent structure in the solvation shell, while the absence of the substituents or presence of symmetrical substituents leads to compacting of solvent structure.

Highlights

Donor-acceptor interactions of fullerene C60 with solvent molecules are responsible for its good solubility in numerous organic solvents due to formation of strong solvation shells [1]
An algorithm was proposed which made it possible to obtain the data from the UV spectra of (C60+aromatic solvents (AS)) solutions in THF which pointed to the difference between the packing density of AS molecules in solvation shell of C60 and that in the pure AS solvent
The data show that the presence of asymmetrical substituents in the AS molecule results in the loosening of solvent structure in the solvation shell of C60, while the absence of substituents or the presence of symmetrical substituents (p-xylene) leads to compacting of solvent structure in the C60 solvation shell

Summary

Introduction

Donor-acceptor interactions of fullerene C60 with solvent molecules are responsible for its good solubility in numerous organic solvents due to formation of strong solvation shells [1]. The presence of substituents in the aromatic solvent (AS) molecule may be expected to result in the appearance of additional interactions between the AS and C60 during solvation. The forced coordination of solvent molecules by C60 may be proposed to result in the difference between the packing density of AS molecules in the C60 solvation shell and that in the pure AS. The examination of this idea was the aim of the work

Experimental Part

Results and Discussion

Conclusions