A new convenient procedure for the synthesis of photochromic N-alkyldithienylmaleimides was developed on the basis of the reaction of 3,4-bis(2,5-dimethyl-3-thienyl)furan-2,5-dione with primary amines. Photochromic properties of the products were examined.
properties in the solid state as in dilute chloroform solutions. These two diarylethenes show typical photochromic properties in chloroform and also in poly(methyl methacrylate) film. During the photochromism, fluorescence of the diarylethenes could be reversibly tuned.
of these two diarylethenes exhibits typical reversible absorption and fluorescence changes upon UV or visiblelight irradiation, and their diverse response to light irradiation is investigated by X-ray single crystal analysis and also DFT calculation. The investigation presented here provides valuable insight into the designing and development of diarylethene-based fluorescent switches in the solid
Synthesis of photochromic 2,3-bis(2,5-dimethyl-3-thienyl)-3-cyanoacrylates by the Beckmann rearrangement of a cyclobutenedione derivative
作者:Valerii Z. Shirinian、Mikhail M. Krayushkin、Valerii A. Barachevskii、Leonid I. Belen’kii、Aleksei A. Shimkin、Yuri P. Strokach
DOI:10.1070/mc2004v014n05abeh001916
日期:2004.1
An unusual Beckmann rearrangement was discovered in the reaction of 3,4-bis(2,5-dimethyl-3-thienyl)cyclobut-3-ene-1,2-dione with hydroxylamine hydrochloride to give esters of 2,3-bis(2,5-dimethyl-3-thienyl)-3-cyanoacrylic acid.
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作者:M. M. Krayushkin、V. Z. Shirinyan、L. I. Belen'kii、A. A. Shimkin、A. Yu. Martynkin、B. M. Uzhinov
DOI:10.1023/a:1021612131447
日期:——
A new convenient procedure for the synthesis of photochromic N-alkyldithienylmaleimides was developed on the basis of the reaction of 3,4-bis(2,5-dimethyl-3-thienyl)furan-2,5-dione with primary amines. Photochromic properties of the products were examined.
A Novel Photochromic Amorphous Molecular Material Based on Bisthienylethene with a Spiro-linker
作者:He Tian、Bingzhi Chen、Pei-Hua Liu
DOI:10.1246/cl.2001.990
日期:2001.10
A novel photochromic amorphous molecule (Spiro-BTE) based on bisthienylethene with a spirobifluorene linker has been synthesized. The relative high photochromic quantum yields were obtained for the Spiro-BTE and the switching stability was observed for more than 200 photochromic cycles. The introduction of the spiro center for photochromic molecules provides a new guideline for the exploring new amorphous