期刊
MACROMOLECULAR BIOSCIENCE
卷 11, 期 6, 页码 772-778出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/mabi.201000451
关键词
annihilation upconversion; metallated macrocycles; miniemulsion polymerization; nanocapsules
The first energetically conjoined TTA-assisted photon energy upconversion operating in cell tissue is described. The synthesized nanocapsules with the encapsulated UC dye system consisting of an emitter and a sensitizer show very efficient UC emission in aqueous dispersion under extremely low excitation intensity down to 0.05W.cm(-2) so that tissue and cells are not affected by the excitation light. The demonstrated sub-linear intensity dependence of the UC emission is of crucial importance for life-science applications as the UC photon could serve as a local or in situ optical excitation source for subsequent light-triggered processes.
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