Synthesis and properties of a fluorene-capped isotruxene: a new unsymmetrical star-shaped pi-system |
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| Authors: | Yang Jye-Shane Lee Yar-Ru Yan Jyu-Lun Lu Ming-Chun |
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| Institution: | Department of Chemistry, National Taiwan University, Taipei, Taiwan 10617. jsyang@ntu.edu.tw |
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| Abstract: | An unsymmetrical star-shaped pi-system (1) with an isotruxene core and three fluorene arms has been synthesized, and its photophysical, electrochemical, and thermochemical properties have been investigated and compared with the corresponding symmetrical truxene derivatives 2a-d (Kanibolotsky, A. L.; Berridge, R.; Skabara, P. J.; Perepichka, I. F.; Bradley, D. D. C.; Koeberg, M. J. Am. Chem. Soc. 2004, 126, 13695-13702). Stronger electronic couplings between the arms in 1 vs 2a-d lead to lower optical band gap, larger splitting in oxidation potentials, and superior thermostability. structure: see text] |
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