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Keywords:

  • patterning;
  • core/shell structures;
  • photoinduced electron transfer;
  • poly(viologen);
  • layer-by-layer films
Thumbnail image of graphical 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.