Abstract
Diffraction-limited, high-contrast photopatterning of the photoluminescence of layer-by-layer films comprising CdSe@CdS@ZnS quantum dots and polyviologen is reported. The photoluminescence of the quantum dots is initially quantitatively quenched due to ultrafast photoinduced electron transfer to polyviologen. Photopatterning is achieved by high-power or prolonged illumination in air, which photochemically degrades the polyviologen and thereby restores the photoluminescence of the quantum dots.
Original language | English |
---|---|
Pages (from-to) | 3617-3621 |
Number of pages | 5 |
Journal | Advanced Materials |
Volume | 24 |
Issue number | 27 |
DOIs | |
Publication status | Published - Jul 17 2012 |
Keywords
- core/shell structures
- layer-by-layer films
- patterning
- photoinduced electron transfer
- poly(viologen)
ASJC Scopus subject areas
- Materials Science(all)
- Mechanics of Materials
- Mechanical Engineering