Single photon triggered dianion formation in TCNQ and F4TCNQ crystals

Excited 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. By use of transient absorption spectroscopy, we demonstrate that the dianion format...

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Main Authors: Ma, Lin, Hu, Peng, Jiang, Hui, Kloc, Christian, Sun, Handong, Soci, Cesare, Voityuk, Alexander A., Michel-Beyerle, Maria E., Gurzadyan, Gagik G.
Other Authors: School of Materials Science & Engineering
Format: Article
Language:English
Published: 2017
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Online Access:https://hdl.handle.net/10356/83909
http://hdl.handle.net/10220/42838
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-839092023-02-28T19:38:52Z Single photon triggered dianion formation in TCNQ and F4TCNQ crystals Ma, Lin Hu, Peng Jiang, Hui Kloc, Christian Sun, Handong Soci, Cesare Voityuk, Alexander A. Michel-Beyerle, Maria E. Gurzadyan, Gagik G. School of Materials Science & Engineering School of Physical and Mathematical Sciences Optical Physics Optics and Photonics Excited 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. 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). MOE (Min. of Education, S’pore) Published version 2017-07-12T09:05:22Z 2019-12-06T15:34:24Z 2017-07-12T09:05:22Z 2019-12-06T15:34:24Z 2016 Journal Article Ma, L., Hu, P., Jiang, H., Kloc, C., Sun, H., Soci, C., et al. (2016). Single photon triggered dianion formation in TCNQ and F4TCNQ crystals. Scientific Reports, 6, 28510-. 2045-2322 https://hdl.handle.net/10356/83909 http://hdl.handle.net/10220/42838 10.1038/srep28510 27346797 en Scientific Reports © 2016 The Author(s). This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ 7 p. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Optical Physics
Optics and Photonics
spellingShingle Optical Physics
Optics and Photonics
Ma, Lin
Hu, Peng
Jiang, Hui
Kloc, Christian
Sun, Handong
Soci, Cesare
Voityuk, Alexander A.
Michel-Beyerle, Maria E.
Gurzadyan, Gagik G.
Single photon triggered dianion formation in TCNQ and F4TCNQ crystals
description Excited 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. 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).
author2 School of Materials Science & Engineering
author_facet School of Materials Science & Engineering
Ma, Lin
Hu, Peng
Jiang, Hui
Kloc, Christian
Sun, Handong
Soci, Cesare
Voityuk, Alexander A.
Michel-Beyerle, Maria E.
Gurzadyan, Gagik G.
format Article
author Ma, Lin
Hu, Peng
Jiang, Hui
Kloc, Christian
Sun, Handong
Soci, Cesare
Voityuk, Alexander A.
Michel-Beyerle, Maria E.
Gurzadyan, Gagik G.
author_sort Ma, Lin
title Single photon triggered dianion formation in TCNQ and F4TCNQ crystals
title_short Single photon triggered dianion formation in TCNQ and F4TCNQ crystals
title_full Single photon triggered dianion formation in TCNQ and F4TCNQ crystals
title_fullStr Single photon triggered dianion formation in TCNQ and F4TCNQ crystals
title_full_unstemmed Single photon triggered dianion formation in TCNQ and F4TCNQ crystals
title_sort single photon triggered dianion formation in tcnq and f4tcnq crystals
publishDate 2017
url https://hdl.handle.net/10356/83909
http://hdl.handle.net/10220/42838
_version_ 1759854234016153600