Ultrafast ring-closing reaction dynamics of a photochromic furan-based difurylethene

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• 作者：A. Khodko^a ; V. Khomenko^a ; Y. Shynkarenko^a ; O. Mamuta^a ; O. Kapitanchuk^b ; D. Sysoiev^c ; N. Kachalova^a ; T. Huhn^c ; S. Snegir^d ; ^{ssnegir@gmail.com}
• 关键词：Diarylethenes ; Photochromism ; Photoswitching ; Pump-probe ; Femtosecond laser ; TD-DFT ; Absorption spectra
• 刊名：Chemical Physics Letters
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：669
• 期：Complete
• 页码：156-160
• 全文大小：1015 K
• 卷排序：669

文摘

Ring-closing reaction of furan-based diarylethenes occurs in subpicosecond time range. Furan-based diarylethenes with thiophenyl-ethynyl side-chains have similar ring-closing dynamics to thiophene based diarylethenes. TD-DFT calculations of absorption spectra are in good agreement with experimental results. Excited open-ring diarylethenes with Sn (n > 1) might have different relaxation paths.