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Two‐Photon Photochromism of Diarylethene Dimer Derivatives
Author(s) -
Saita Shingo,
Yamaguchi Tadatsugu,
Kawai Tsuyoshi,
Irie Masahiro
Publication year - 2005
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.200500254
Subject(s) - photochromism , diarylethene , oxazole , chemistry , photochemistry , dimer , benzene , indole test , absorption (acoustics) , aryl , materials science , stereochemistry , organic chemistry , alkyl , composite material
Photochromic diarylethene dimer derivatives with large two‐photon absorption (TPA) cross‐sections have been designed and synthesized. The derivatives have a D–π–D structure in which indole rings are used as donor units (D) and 1,4‐bis(ethynyl)benzene or 1,4‐bis(ethenyl)benzene as a π‐conjugated chain unit (π). Compound 5 a , which has oxazole rings as one of the aryl groups, showed a TPA cross‐section of 23 GM at 820 nm and exhibited efficient two‐photon photochromic reactivity.