Lu Wenxin, Mu Tiantian, Zhang Yuehong, Chen Bo, Guo Huantao, Zhao Luyang, Wang Peng, Bian Yongzhong
College of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao 266590, China.
Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline Materials, Department of Chemistry and Chemical Engineering, School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China.
Molecules. 2025 Jan 15;30(2):326. doi: 10.3390/molecules30020326.
Effectively regulating the rotary motions of molecular rotors through external stimuli poses a tremendous challenge. Herein, a new type of molecular rotor based on azobenzene-strapped mixed (phthalocyaninato)(porphyrinato) rare earth triple-decker complex is reported. Electronic absorption and H NMR spectra manifested the reversible isomerization of the rotor between the configuration and the configuration. The rotational behavior of phthalocyanine rotator in two configurations were investigated by VT-H NMR experiments, and the results indicated that the phthalocyanine rotator possessed a smaller rotational energy barrier in the isomer than in the isomer, which was also supported by DFT calculations. This result demonstrates that the rotation of phthalocyanine rotator in (phthalocyaninato)(porphyrinato) rare earth triple-decker complex can be successfully modulated by photo-isomerization via altering irradiation.
通过外部刺激有效调节分子转子的旋转运动是一项巨大的挑战。在此，报道了一种基于偶氮苯连接的混合（酞菁）（卟啉）稀土三层配合物的新型分子转子。电子吸收光谱和氢核磁共振光谱表明转子在顺式构型和反式构型之间发生可逆异构化。通过变温氢核磁共振实验研究了酞菁转子在两种构型下的旋转行为，结果表明酞菁转子在顺式异构体中的旋转能垒比反式异构体中的小，这也得到了密度泛函理论计算的支持。该结果表明，通过改变光照，（酞菁）（卟啉）稀土三层配合物中酞菁转子的旋转可通过光异构化成功调节。
