Efficient Upper-Excited State Fluorescence in an Organic Hyperbolic Metamaterial.


Upper-excited state emission is not usually observed from molecules owing to competition with much faster nonradiative relaxation pathways; however, it can be made more efficient by modifying the photonic density of states to enhance the radiative decay rate. Here, we show that embedding the small molecule zinc tetraphenylporphyrin (ZnTPP) in a hyperbolic… (More)
DOI: 10.1021/acs.nanolett.7b04738


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