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Synthesis of Monodisperse Cylindrical Nanoparticles via Crystallization-driven Self-assembly of Biodegradable Block Copolymers
Published on: June 20, 2019
Alpha-cyclodextrin functionalized CdS nanocrystals for fabrication of 2/3 D assemblies
Nicoletta Depalo1, Roberto Comparelli, Marinella Striccoli
1Dipartimento di Chimica, Università di Bari, via Orabona 4, I-70126 Bari, Italy.
The Journal of Physical Chemistry. B
|September 1, 2006
Summary
Alpha-cyclodextrins (alphaCD) effectively transfer cadmium sulfide nanocrystals (CdS NCs) to water. This study explores alphaCD-CdS NC complex formation and its use in fabricating supramolecular architectures via layer-by-layer assembly and host-guest chemistry.
Area of Science:
- Materials Science
- Nanotechnology
- Supramolecular Chemistry
Background:
- Organic-capped cadmium sulfide nanocrystals (CdS NCs) require phase transfer for aqueous applications.
- Cyclodextrins (CDs) are explored as potential mediators for this transfer.
Purpose of the Study:
- To identify the most effective cyclodextrin for CdS NCs water phase transfer.
- To investigate the mechanism of alphaCD-CdS NC complex formation.
- To fabricate 2D/3D supramolecular architectures using these complexes.
Main Methods:
- Screening various cyclodextrins (CDs) for phase transfer efficiency.
- Investigating alphaCD-CdS NC complexation using optical, structural, and calorimetric techniques.
- Fabricating supramolecular architectures via layer-by-layer assembly and self-assembled monolayers.
Main Results:
- Alpha-cyclodextrin (alphaCD) proved most effective for CdS NCs water phase transfer.
- Complex formation between alphaCD and CdS NCs was confirmed and characterized.
- Successful fabrication of multilayered and monolayered supramolecular architectures was achieved.
Conclusions:
- AlphaCD-mediated complexation is key to CdS NCs aqueous phase transfer.
- Host-guest interactions are crucial for the stability and assembly of these nanostructures.
- The developed strategies enable the creation of advanced supramolecular materials.
