| AVS 55th International Symposium & Exhibition | |
| Nanometer-scale Science and Technology | Thursday Sessions |
| Session NS+NC-ThM |
| Session: | Nanoscale Assembly |
| Presenter: | E. Sardella, CNR-IMIP, Italy |
| Authors: | E. Sardella, CNR-IMIP, Italy F.D. Liuzzi, University of Bari, Italy R. Comparelli, CNR-IPCF, Italy N. Depalo, CNR-IPCF, Italy A. Agostiano, University of Bari, Italy M.L. Curri, CNR-IPCF, Italy M. Striccoli, CNR-IPCF, Italy P. Favia, University of Bari, Italy R. d'Agostino, University of Bari, Italy |
| Correspondent: | Click to Email |
Nanotechnology is increasingly oriented towards the fabrication of devices based on colloidal inorganic nanocrystals (NCs) arranged on a surface. Such interest is justified by the expectation that the controlled assembly of NCs, with relevant size-, shape-, and composition-dependent properties, will open access to unusual collective phenomena relevant to novel technological applications. The chemically-directed assembly of NCs onto substrates allow to obtain functionalities on multiple locations and levels. This approach requires the introduction of suitable functionalities at the NC surface, in order to tune their reactivity without altering the original structural and the chemical-physical properties, also at the interface with substrate, where the NC assembly will take place.1,2 Several strategies are currently employed to drive NCs assembly onto different substrates, with some limitations. In this work alternative plasma based routes are considered in order to fabricate functionalized substrates with an accurate control on the surface treatment depth. Plasma technology is used to produce customized surfaces irrespectively to the material composition, also to define patterns for the subsequent NC immobilization.3 The obtained functionalized surface are then exploited to assembly red emitting CdSe@ZnS core shells NCs. The results have successfully demonstrated the effectiveness of such an assembling approach, thus envisioning promising application for the nanostructured materials in optoelectronic and sensing field.4 Acknowledgements: PRISMA-INSTM 05MADA1 and EC NaPa-NMP4-CT-2003-500120 projects are acknowledged for the financial support.
1E. Fanizza et al., (2007) Advanced Functional Materials, 17, 201
2N. Depalo et al., J. Phys. Chem B (2006), 110, 17388
3E. Sardella et al, Plasma Process. and Polym. (2006) 3, 456
4R. Comparelli et al. in: Nanomaterials for Biosensors Vol. 8 Nanotechnologies for the Life Sciences; WILEY-VCH, 2006, 123