1. Phenanthroline-fused unsymmetrical phthalocyanines chelating rhenium(I) tricarbonyl units: Synthesis, spectroscopy and electrochemical properties.
- Author
-
Lin, Chenxiang, Yang, Jian, Li, Senzhi, Gong, Lei, Gao, Ying, Chen, Yuxiang, Che, Ping, Qi, Dongdong, Li, Jianfeng, and Bian, Yongzhong
- Subjects
- *
PHTHALOCYANINE derivatives , *MAGNETIC circular dichroism , *TIME-resolved spectroscopy , *RHENIUM , *METAL phthalocyanines , *PHTHALOCYANINES , *MOLECULAR structure , *CHELATES - Abstract
Phenanthroline-fused unsymmetrical phthalocyanine (2 -H) and its zinc complex (2 -Zn) were treated with Re(CO) 5 Cl to give rhenium(I) tricarbonyl chloride chelates 1 -H and 1 -Zn respectively, which represent the first example of phthalocyanines with peripherally appended rhenium(I) complex units. The molecular structure of 1 -Zn was determined by single crystal X-ray diffraction analysis. The electronic absorption, magnetic circular dichroism, and steady-state and time-resolved fluorescence spectra and the singlet oxygen (1O 2) generation efficiencies of 1 -H and 1 -Zn were measured and compared with those of phenanthroline-fused unsymmetrical phthalocyanines 2 -H and 2 -Zn, and the corresponding symmetrical phthalocyanines 3 -H and 3 -Zn as well. The electrochemical properties of 1 -H and 1 -Zn were also studied by cyclic voltammetry and compared with those of 2 -H and 2 -Zn. The effects of unsymmetrical phenanthroline fusing and rhenium(I) chelating on the photophysical and electrochemical behaviors of phthalocyanines were highlighted based on the above investigations. [Display omitted] • A peripheral rhenium(I) tricarbonyl appended phenanthroline-fused unsymmetrical phthalocyanine and its zinc complex were synthesized and characterized. [ABSTRACT FROM AUTHOR]
- Published
- 2021
- Full Text
- View/download PDF