Intercalation and stitching of graphite oxide with diaminoalkanes

Citation:

Herrera-Alonso, M. ; Abdala, A. A. ; McAllister, M. J. ; Aksay, I. A. ; Prud'homme, R. K. Intercalation and stitching of graphite oxide with diaminoalkanes. Langmuir 2007, 23, 10644-10649.

Date Published:

Oct

Type of Article:

Article

ISBN Number:

0743-7463

Accession Number:

WOS:000249948700032

Abstract:

The intercalation reaction of graphite oxide with diaminoalkanes, with the general formula H2N(CH2)(n)NH2 (n = 4-10), was studied as a method for synthesizing pillared graphite with tailored interlayer spacing. Interlayer spacings from 0.8 to 1.0 nm were tailored by varying the size of the intercalant from (CH2)(4) to (CH2)(10). X-ray diffraction and infrared spectroscopy were used to confirm intercalation, and the frequency of the CH2 stretch confirmed that the intercalants are in a disordered state, with an important contribution from the gauche conformer. Sequential intercalation of diaminoalkanes followed by dodecylamine demonstrated the inability of these "stitched" systems to undergo expansion along the c-direction, indicative of cross-linking. Finally, the reaction of graphite oxide with diaminoalkanes under reflux and for extended periods (> 72 h) resulted in the chemical reduction of the graphite oxide to a disordered graphitic structure.