Y. Norikane, R. Davis, Y. Nishimura
Jun 25, 2009
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Influential Citations
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Journal
Journal of Photochemistry and Photobiology A-chemistry
Abstract
Abstract The photochromic behavior of two spiroperimidine compounds, 2,3-dihydro-2-spiro-7′-(8’-imino-7′,8′-dihydronaphthalen-1’-amine)perimidine, PNI and 2,3-dihydro-2-spiro-4′-[8′-aminonaphthalen-1′(4H)-one]perimidine, PNO-p has been studied by absorption and transient absorption spectroscopies. Both PNI and PNO-p exhibit extremely large solvent effect on the thermal back reaction from the colored (open) to the initial (close) state. The lifetime of the colored state ranges from 600 μs (methanol) to 22 days (acetonitrile) at room temperature. The relative energies of isomers have been estimated by the DFT calculations.