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Ma, Lin
Hu, Peng Jiang, Hui Kloc, Christian Sun, Handong Soci, Cesare Voityuk, Alexander A. Michel-Beyerle, Maria Elisabeth Gurzadyan, Gagik G. |
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2018 June 5 | |
xcited state dynamics in two strong organic electron acceptor systems, TCNQ and F4TCNQ single crystals, was studied. After absorption of a single photon, dianions are formed in both crystals on ultrashort timescale: TCNQ τ < 50 fs, F4TCNQ τ = 4 ps. By use of transient absorption spectroscopy, we demonstrate that the dianion formation in F4TCNQ is mediated by the radical anion precursor which is described by a two-step model. Our measurements show the phenomenon that in this quinoid acceptor crystals in the absence of additional donor molecule, it is possible to resolve the two step formation of a doubly charged anion upon absorption of a single low energy photon (2.6 eV) | |
http://hdl.handle.net/2072/319610 | |
eng | |
Nature Publishing Group | |
Attribution 4.0 Spain | |
http://creativecommons.org/licenses/by/4.0/es/ | |
Ã’ptica fÃsica
Physical optics Fotònica Photonics |
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Single photon triggered dianion formation in TCNQ and F4TCNQ crystals | |
info:eu-repo/semantics/article | |
Recercat |