@article{oai:kansai-u.repo.nii.ac.jp:00011492,
 author = {Yamamoto, Yohei and Tanaka, Hideyuki and Mino, R Caira and Tanaka, Koichi},
 issue = {8},
 journal = {Chemistry Letters},
 month = {},
 note = {A remarkable deuterium isotope effect on the photochromism of 3,3′-diaryl-3H,3′H-[2,2′]biindenylidene-1,1′-dione (2) in the solid state has been found. The yellow crystals of 2 and 2-d2 were immediately changed to reddish purple crystals upon photoirradiation in the solid state. The reddish purple crystals of 2-d2 returned back to the original yellow crystals under dark for 72 h, whereas that of 2 faded within 2 h.},
 pages = {680--681},
 title = {A Remarkable Isotope Effect on the Photochromism of trans-Biindenylidenedione in the Solid State},
 volume = {32},
 year = {2003}
}