Journal
MATERIALS LETTERS
Volume 132, Issue -, Pages 263-266Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2014.06.101
Keywords
Energy transfer; Luminescence; Spectroscopy; Fluorescence lifetime
Funding
- National Natural Science Foundation of China (NFSC) [11204222]
- Natural Science Foundation of Hubei Province [2013CFB316]
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Photoinduced process in CdTe quantum dots (QDs)-copper phthalocanine (CuPc) non-conjugated system via two-photon excitation has been investigated by time-correlated single photon counting techniques with femtosecond laser pulse. Efficient energy transfer in the CdTe-CuPc system via two-photon excitation was observed. The energy transfer efficiency was found to decrease with an increase in excitation laser power, and the maximum energy transfer efficiency can reach 43.8% via two-photon excitation. This work indicates that the QD-phthalocyanine system has potential applications in two-photon-excitation photodynamic therapy. (C) 2014 Elsevier B.V. All rights reserved.
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