title: Modeling the Dispersibility of Single Walled Carbon Nanotubes in Organic Solvents by Quantitative Structure-Activity Relationship Approach.
abstract: The knowledge of physico-chemical properties of carbon nanotubes, including behavior in organic solvents is very important for design, manufacturing and utilizing of their counterparts with improved properties. In the present study a quantitative structure-activity/property relationship (QSAR/QSPR) approach was applied to predict the dispersibility of single walled carbon nanotubes (SWNTs) in various organic solvents. A number of additive descriptors and quantum-chemical descriptors were calculated and utilized to build QSAR models. The best predictability is shown by a 4-variable model. The model showed statistically good results (R²training= 0.797,Q² = 0.665,R²test= 0.807), with high internal and external correlation coefficients. Presence of the X0Av descriptor and its negative term suggest that small size solvents have better SWCNTs solubility. Mass weighted descriptor ATS6m also indicates that heavier solvents (and small in size) most probably are better solvents for SWCNTs. The presence of the DipoleZdescriptor indicates that higher polarizability of the solvent molecule increases the solubility. The developed model and contributed descriptors can help to understand the mechanism of the dispersion process and predictorganic solvents that improve the dispersibility of SWNTs.
authors.affiliation: Department of Biomedical Devices and Technology, Kayseri Vocational School, Erciyes University, Kayseri 38039, Turkey. hayriyey@erciyes.edu.tr.|Interdisciplinary Center for Nanotoxicity, Department of Chemistry and Biochemistry, Jackson State University, Jackson, MS 39217, USA. hayriyey@erciyes.edu.tr.
authors.forename: Hayriye
authors.initials: H
authors.lastname: Yilmaz
authors.affiliation: Interdisciplinary Center for Nanotoxicity, Department of Chemistry and Biochemistry, Jackson State University, Jackson, MS 39217, USA. rasulev@icnanotox.org.|Center for Computationally Assisted Science and Technology (CCAST), North Dakota State University, Fargo, ND 58108, USA. rasulev@icnanotox.org.
authors.forename: Bakhtiyor
authors.initials: B
authors.lastname: Rasulev
authors.affiliation: Interdisciplinary Center for Nanotoxicity, Department of Chemistry and Biochemistry, Jackson State University, Jackson, MS 39217, USA. jerzy@icnanotox.org.
authors.forename: Jerzy
authors.initials: J
authors.lastname: Leszczynski
keywords: QSAR; dispersibility; organic solvent; single walled carbon nanotubes (SWNTs)