@article{0be1505c37cb411baf136e855331dcd0,
title = "Dynamic redox systems based on bis(spiroxanthene)-type donors with a polycyclic aromatic hydrocarbon: Preparation, X-ray structures, and electrochromic response with fluorescence change",
abstract = "The long C-C bonds (1.614(2)-1.630(2) {\AA}) in newly prepared title donors 2-6 are cleaved upon two-electron oxidation to afford the bond-dissociated dicationic dyes 2 2+-6 2+, whose electron affinities are stronger than the corresponding biphenyl-2,2′-diyl dications 1 2+ due to the spatial proximity of two xanthenylium units. Not only UV-vis but also fluorescence spectra changed drastically upon electrolysis since only colorless neutral donors are fluorescent.",
author = "Takanori Suzuki and Shoko Tanaka and Hiroki Higuchi and Hidetoshi Kawai and Kenshu Fujiwara",
note = "Funding Information: This work was supported by the Ministry of Education, Science, and Culture, Japan (No. 15350019 and 14654139). We thank Prof. Tamotsu Inabe (Hokkaido University) for use of the X-ray structure analysis system. MS spectra were measured by Mr. Kenji Watanabe and Dr. Eri Fukushi at the GC–MS, and NMR Laboratory (Faculty of Agriculture, Hokkaido University). ",
year = "2004",
month = nov,
day = "8",
doi = "10.1016/j.tetlet.2004.09.080",
language = "English",
volume = "45",
pages = "8563--8567",
journal = "Tetrahedron Letters",
issn = "0040-4039",
publisher = "Elsevier Limited",
number = "46",
}