Water phase transfer of oleic capped semiconductor nanocrystals mediated by alfa-cyclodextrins

Nicoletta Depalo; Roberto Comparelli; Marinella Striccoli; Maria Lucia Curri; Lucia Catucci; Angela Agostiano

doi:10.1117/12.608598

28 June 2005 Water phase transfer of oleic capped semiconductor nanocrystals mediated by α-cyclodextrins

Nicoletta Depalo, Roberto Comparelli, Marinella Striccoli, Maria Lucia Curri, Lucia Catucci, Angela Agostiano

Proceedings Volume 5838, Nanotechnology II; (2005) https://doi.org/10.1117/12.608598
Event: Microtechnologies for the New Millennium 2005, 2005, Sevilla, Spain

Abstract

In this work the host-guest chemistry of α-cyclodextrin has been investigated in order to mediate the phase transfer from organic solvent to water of blue emitting CdS nanocrystals. Oleic acid capped CdS nanocrystals have been synthesized by using colloidal chemistry routes in non-coordinating solvents and effectively transferred from hexane phase in aqueous solution. The transfer has been mediated by the formation of an inclusion complex between nanocrystal surfactant and α-cyclodextrins. The optical properties of the nanocrystal water solution, the effect of cyclodextrin concentration and the nanocrystal size on the phase transfer efficiency have been investigated. Finally a layer-by-layer assembling procedure of CdS nanocrystals complexed by cyclodextrins has been exploited to set up a supramolecular hierarchical multilayer system with high level of structural complexity.

Citation Download Citation

Nicoletta Depalo, Roberto Comparelli, Marinella Striccoli, Maria Lucia Curri, Lucia Catucci, and Angela Agostiano "Water phase transfer of oleic capped semiconductor nanocrystals mediated by α-cyclodextrins", Proc. SPIE 5838, Nanotechnology II, (28 June 2005); https://doi.org/10.1117/12.608598

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available