Muraoka Takahiro, Kinbara Kazushi, Kobayashi Yuka, Aida Takuzo
Department of Chemistry and Biotechnology, School of Engineering, The University of Tokyo,7-3-1, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan.
J Am Chem Soc. 2003 May 14;125(19):5612-3. doi: 10.1021/ja034994f.
The first example of "light-driven chiral molecular scissors" (1), which consists of 1,1',3,3'-tetraarylferrocene as a pivot part and azobenzene as a driving part, was synthesized. Absorption, circular dichroism (CD), and 1H NMR spectral studies on the photoinduced isomerization process of an enantiomer of 1 agreed well with a prediction by a DFT calculation, where a motion of the handles via light-driven contraction/expansion of the connecting azobenzene strap was transformed, through a pivotal motion of the ferrocene unit, into an open-close motion of the blade parts.
合成了首个“光驱动手性分子剪刀”(1)，它由作为枢轴部分的1,1',3,3'-四芳基二茂铁和作为驱动部分的偶氮苯组成。对1的一种对映体光致异构化过程的吸收光谱、圆二色光谱(CD)和1H NMR光谱研究结果与密度泛函理论(DFT)计算的预测结果吻合良好，其中通过偶氮苯连接带的光驱动收缩/伸展，手柄的运动通过二茂铁单元的枢轴运动转化为刀片部分的开合运动。
