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Title: Stable 2D anti-ferromagnetically coupled fluorenyl radical dendrons
Authors: Wang, J. 
Kim, G.
Sandoval-Salinas, M.E.
Phan, H. 
Gopalakrishna, T.Y.
Lu, X.
Casanova, D.
Kim, D.
Wu, J.
Issue Date: 2018
Publisher: Royal Society of Chemistry
Citation: Wang, J., Kim, G., Sandoval-Salinas, M.E., Phan, H., Gopalakrishna, T.Y., Lu, X., Casanova, D., Kim, D., Wu, J. (2018). Stable 2D anti-ferromagnetically coupled fluorenyl radical dendrons. Chemical Science 9 (13) : 3395-3400. ScholarBank@NUS Repository.
Rights: Attribution-NonCommercial 4.0 International
Abstract: We report the first class of stable, two-dimensional (2D) anti-ferromagnetically coupled dendritic polyradicaloids. A kinetically blocked fluorenyl radical was used to build up the first and second generation dendrons FR-G1 and FR-G2 containing three and seven fluorenyl units, respectively. The neighboring fluorenyl radicals in FR-G1 and FR-G2 show moderate anti-ferromagnetic exchange interaction, resulting in a doublet and quartet ground state, respectively, with a small doublet-quartet energy gap. From FR-G1 to FR-G2, the energy gap decreased and the two-photon absorption was enhanced owing to more extended 2D ?-conjugation. Both compounds showed multiple redox waves due to their polyradical character. © 2018 The Royal Society of Chemistry.
Source Title: Chemical Science
ISSN: 2041-6520
DOI: 10.1039/c7sc05493a
Rights: Attribution-NonCommercial 4.0 International
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