@article{oai:kansai-u.repo.nii.ac.jp:00011462,
 author = {Tanaka, Koichi and Tomomori, Akihiro and Janet, L. Scott},
 issue = {2},
 journal = {Bulletin of the Chemical Society of Japan},
 month = {Feb},
 note = {Some 2-propynylallene derivatives exhibited color change from pale-yellow to green upon photoirradiation with visible light in the solid state. The green color disappeared either by heating or dissolving into solvents. The photochromism of 2-propynylallene derivatives depends largely on the substituents on the aromatic rings. Crystallographic analysis indicates that the overlap of the gamma systems of the fluorene moiety in the photochromic crystals allow photoinduced charge-transfer interactions in the solid-state.},
 pages = {294--299},
 title = {Crystalline Photochromism of 2-Propynylallene Derivatives},
 volume = {78},
 year = {2005}
}