Journal
NANO LETTERS
Volume 13, Issue 11, Pages 5563-5569Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl403181k
Keywords
Electron transfer; AFM; quantum dot; TiO2; single molecule spectroscopy; supraresolution imaging
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Funding
- National Science Foundation [CHE-1212907, CHE-1309817]
- Direct For Mathematical & Physical Scien
- Division Of Chemistry [1309817] Funding Source: National Science Foundation
- Direct For Mathematical & Physical Scien
- Division Of Chemistry [1212907] Funding Source: National Science Foundation
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Using single CdSe/CdS quantum dot (QD) functionalized atomic force microscopy (AFM) tips, we demonstrate that the spatial dependence of photoinduced electron transfer dynamics from the single QD to TiO2 nanoparticles can be controlled and probed with high spatial (subdiffraction-limited) and temporal (limited by fluorescence microscopy) resolutions. This finding suggests the feasibility of using electron donor or acceptor modified AFM tips for simultaneous high resolution imaging of morphology and photoinduced charge transfer dynamics in nanomaterials.
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