Surface Passivation of Luminescent Colloidal Quantum Dots with Poly(Dimethylaminoethyl methacrylate) through a Ligand Exchange Process
- 1 June 2004
- journal article
- Published by American Chemical Society (ACS) in Journal of the American Chemical Society
- Vol. 126 (25) , 7784-7785
- https://doi.org/10.1021/ja0489339
Abstract
Polydimethylaminoethyl methacrylate (PDMAEMA) was used as a multidentate ligand to modify the surface of CdSe/ZnS core-shell colloidal quantum dots in toluene with trioctylphosphine oxide (TOPO) as the surface ligand. Adsorption of PDMAEMA was accompanied by release of TOPO. The process is free of agglomeration, and the modified nanocrystals become soluble in methanol. The photoluminescence properties are well-preserved in either toluene or methanol.Keywords
This publication has 10 references indexed in Scilit:
- Templated Surface Sol–Gel Synthesis of SiO2 Nanotubes and SiO2‐Insulated Metal NanowiresAdvanced Materials, 2003
- Quantum dots finally come of ageNature Biotechnology, 2003
- Semiconductor Nanocrystals with Multifunctional Polymer LigandsJournal of the American Chemical Society, 2002
- In Vivo Imaging of Quantum Dots Encapsulated in Phospholipid MicellesScience, 2002
- Hybrid Nanorod-Polymer Solar CellsScience, 2002
- Photoluminescent Polymer/Quantum Dot Composite NanoparticlesChemistry of Materials, 2001
- Surfactant−Semiconductor Interfaces: Perturbation of the Photoluminescence of Bulk Cadmium Selenide by Adsorption of Tri-n-octylphosphine Oxide as a Probe of Solution Aggregation with Relevance to Nanocrystal StabilizationJournal of the American Chemical Society, 1998
- The band edge luminescence of surface modified CdSe nanocrystallites: Probing the luminescing stateThe Journal of Chemical Physics, 1997
- Semiconductor Clusters, Nanocrystals, and Quantum DotsScience, 1996
- Synthesis and Characterization of Strongly Luminescing ZnS-Capped CdSe NanocrystalsThe Journal of Physical Chemistry, 1996