Nano Science and Technology InstituteNano Science and Technology Institute
Nano Science and Technology Institute 2005 NSTI Nanotechnology Conference & Trade Show
Nanotech 2005
Bio Nano 2005
Business & Investment
Nano Impact Workshop
Program
Sessions
Sunday
Monday
Tuesday
Wednesday
Thursday
Index of Authors
Index of Keywords
Keynote Presentations
Confirmed Speakers
Participating Companies
Industry Focus Sessions
Nanotech Expo
Special Symposia
Conferences
Sponsors
Exhibitors
Venue 2005
Organization
Press Room
Subscribe
Site Map
 
Nanotech 2005 At A Glance
Nanotech Proceedings
Nanotechnology Proceedings
Global Partner
nano tech
Supporting Organizations
Nanotech 2005 Supporting Organization
Media Sponsors
Nanotech 2005 Medias Sponsors
Event Contact
696 San Ramon Valley Blvd., Ste. 423
Danville, CA 94526
Ph: (925) 353-5004
Fx: (925) 886-8461
E-mail:
 
 

Solubility and Purification of Mo6S4.5I4.5 Nanowires in Common Solvents

V. Nicolosi, V. Vrbanic, A. Mrzel, D. Mihailovic, W.J. Blau and J.N. Coleman
Trinity College Dublin, IE

Keywords:
MoxSyIz, sedimentation, solubilization, purification

Abstract:
The discovery of inorganic one-dimensional nanostructures has attracted a great deal of attention because of various interesting properties correlating their characteristic chemical properties with their ease of fabrication and monodisperse, metallic nature. However the high expectations on these materials are strictly correlated with the possibility to disperse them easily and in common solvents and to develop sufficiently practical purification methods. In this work we have investigated the solubility of Mo6S4.5I4.5 nanowire soot in a range of common solvents by performing sedimentation studies and microscopic characterization. A sedimentation equation was derived showing that the concentration of any insoluble dispersed phase decreases exponentially with time. We find that in all solvents, Mo6S4.5I4.5 nanowire soot contains three phases, two of which are insoluble with one soluble phase. Scanning and Transmission electron microscopy have been used to identify and characterize each of the three phases. Fitting the sedimentation equation to the experimental sedimentation data gives the partial concentration of each phase. The sedimentation properties of the various phases did not result to vary significantly with concentration indicating that the insoluble nanowires are intrinsically insoluble. However, the diameter of the soluble bundles decreases with concentration, until very small bundles consisting of only two or three nanowires were observed at concentration below 0.003 mg/ml. In addition, stable composite dispersions were produced by mixing the nanowires with polyvinylpyrrolidone in isopropanol opening the way for the formation of polymer / inorganic nanowire composites.

Back to Program

Sessions Sunday Monday Tuesday Wednesday Thursday Authors

Nanotech 2005 Conference Program Abstract

 
Gold Sponsors
Nanotech Gold Sponsors
Silver Sponsors
Nanotech Silver Sponsors
Gold Key Sponsors
Nanotech Gold Key Sponsors
Nanotech Ventures Sponsors
Nanotech Ventures Sponsors
Sponsors
Nanotech Sponsors
News Headlines
NSTI Online Community
 
 

© Nano Science and Technology Institute, all rights reserved.
Terms of use | Privacy policy | Contact