A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä
Water-soluble full-length single-wall carbon nanotube polyelectrolytes: Preparation and characterization
Tekijät: Paloniemi H, Aaritalo T, Laiho T, Liuke H, Kocharova N, Haapakka K, Terzi F, Seeber R, Lukkari J
Kustantaja: AMER CHEMICAL SOC
Julkaisuvuosi: 2005
Journal: Journal of Physical Chemistry B
Tietokannassa oleva lehden nimi: JOURNAL OF PHYSICAL CHEMISTRY B
Lehden akronyymi: J PHYS CHEM B
Vuosikerta: 109
Numero: 18
Aloitussivu: 8634
Lopetussivu: 8642
Sivujen määrä: 9
ISSN: 1520-6106
DOI: https://doi.org/10.1021/jp0443097
HiPco single-wall carbon nanotubes (SWNTs) have been noncovalently modified with ionic pyrene and naphthalene derivatives to prepare water-soluble SWNT polyelectrolytes (SWNT-PEs), which are analogous to polyanions and polycations. The modified nanotubes have been characterized with UV-vis-NIR, fluorescence, Raman and X-ray photoelectron spectroscopy (XPS), and transmission electron microscopy (TEM). The nanotube-adsorbate interactions consist of π-π stacking interactions between the aromatic core of the adsorbate and the nanotube surface and specific contributions because of the substituents. The interaction between nanotubes and adsorbates also involves charge transfer from adsorbates to SWNTs, and with naphthalene sulfonates the role of a free amino group was important. The ionic surface charge density of the modified SWNTs is constant and probably controlled by electrostatic repulsion between like charges. The linear ionic charge density of the modified SWNTs is similar to that of common highly charged polyelectrolytes.
Ladattava julkaisu This is an electronic reprint of the original article. |  |
