Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 137, Issue 31, Pages 9832-9842Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jacs.5b04765
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Funding
- U.S. National Cancer Institute [R01-CA126642]
- ISN ARO [W911NF-07-D-0004]
- U.S. Department of Energy Office of Science, Office of Basic Energy Sciences [DE-SC0009758]
- National Science Foundation (NSF)
- U.S. Department of Energy (DOE) [DE-SC0009758] Funding Source: U.S. Department of Energy (DOE)
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Micelles have been employed to encapsulate the supramolecular assembly of quantum dots with palladium(II) porphyrins for the quantification of O-2 levels in aqueous media and in vivo. Forster resonance energy transfer from the quantum dot (QD) to the palladium porphyrin provides a means for signal transduction under both one- and two-photon excitation. The palladium porphyrins are sensitive to O-2 concentrations in the range of 0-160 Torr. The micelle-encapsulated QD-porphyrin assemblies have been employed for in vivo multiphoton imaging and lifetime-based oxygen measurements in mice with chronic dorsal skinfold chambers or cranial windows. Our results establish the utility of the QD-micelle approach for in vivo biological sensing applications.
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