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Reversible Diastereoselective Photocyclization of Diarylethenes in a Bulk Amorphous State
Author(s) -
Yamaguchi T.,
Nomiyama K.,
Isayama M.,
Irie M.
Publication year - 2004
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200305815
Subject(s) - diarylethene , amorphous solid , materials science , diastereomer , photochromism , photochemistry , state (computer science) , chemical physics , glass transition , polymer , condensed matter physics , crystallography , nanotechnology , organic chemistry , physics , composite material , chemistry , algorithm , computer science
Diarylethene derivatives with two chiral substituents (see Figure) undergo reversible diastereoselective photocyclization reactions in a bulk amorphous state. An enrichment of one of the diastereomers (25% d.e.) has been found to exist below the glass transition temperature. The diastereoselection clearly indicates that short distance regularity exists in the glassy state.