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Browsing by Author "Liang, Ming-Ju"

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    Regio- and stereo-selective [4+4] photodimerization of angular-shaped dialkyltetracenedithiophene
    (2019-01-11)
    Hsu, Tze-Gang
    ;
    Chou, Hsiao-Chieh
    ;
    Liang, Ming-Ju
    ;
    Lai, Yu-Ying
    ;
    Cheng, Yen-Ju
    Angular-shaped dialkyltetracenedithiophenes (aTDTs) undergo [4+4] photodimerization in solution to form a butterfly-shaped skeleton. This reaction proceeds in a regio- and stereo-selective manner, forming only a single planosymmetric syn-[2,2]-daTDT out of six possible products. The photocycloaddition of aTDTs can take place topochemically in the thin-film state while maintaining regio- and stereo-selectivity. Stronger aliphatic dispersion forces and - interactions play important roles in forming the eclipsed dimeric complex that leads to the syn-[2,2]-daTDT isomer.