Jump to main content
Jump to site search

Issue 9, 2002
Previous Article Next Article

Synthesis of a novel family of photochromic amorphous molecular materials based on dithienylethene, their photochromic properties and application for dual image formation

Author affiliations

Abstract

A novel family of photochromic amorphous molecular materials containing a dithienylethene moiety, 1-{5-[4-(di-p-tolylamino)phenyl]-2-methylthiophen-3-yl}-2-(2,5-dimethylthiophen-3-yl)-3,3,4,4,5,5-hexafluorocyclopentene, 1-{5-[4-(di-p-tolylamino)phenyl]-2-methylthiophen-3-yl}-2-(2-methylbenzo[b]thiophen-3-yl)-3,3,4,4,5,5-hexafluorocyclopentene and 1,2-bis{5-[4-(di-p-tolylamino)phenyl]-2-methylthiophen-3-yl}-3,3,4,4,5,5-hexafluorocyclopentene, have been designed and synthesised. These compounds, together with their photocyclised products, were found to readily form amorphous glasses with well-defined glass transition temperatures and to undergo photochromism as amorphous films as well as in solution. These compounds are characterised by high quantum yields for the photocyclisation reactions, very low quantum yields for the reverse ring-opening reactions and, hence, almost 100% fractions of the photocyclised form at the photostationary state in solution. These results suggest that the anti-parallel conformer is more populated than the parallel conformer. Optical dichroism was induced by irradiation of coloured films of the photocyclised compounds with linearly polarised red light, and dual image formation at the same location was realised by utilising this phenomenon.

Graphical abstract: Synthesis of a novel family of photochromic amorphous molecular materials based on dithienylethene, their photochromic properties and application for dual image formation

Back to tab navigation

Publication details

The article was received on 29 May 2002, accepted on 21 Jun 2002 and first published on 05 Aug 2002


Article type: Paper
DOI: 10.1039/B205201F
Citation: J. Mater. Chem., 2002,12, 2612-2619
  •   Request permissions

    Synthesis of a novel family of photochromic amorphous molecular materials based on dithienylethene, their photochromic properties and application for dual image formation

    H. Utsumi, D. Nagahama, H. Nakano and Y. Shirota, J. Mater. Chem., 2002, 12, 2612
    DOI: 10.1039/B205201F

Search articles by author

Spotlight

Advertisements