A Photocontrolled Molecular Rotor Based on Azobenzene-Strapped Mixed (Phthalocyaninato)(Porphyrinato) Rare Earth Triple-Decker
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 <b>Azo-1</b> is reported. Electr...
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| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2025-01-01
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| Series: | Molecules |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1420-3049/30/2/326 |
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| Summary: | 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 <b>Azo-1</b> is reported. Electronic absorption and <sup>1</sup>H NMR spectra manifested the reversible isomerization of the rotor <b>Azo-1</b> between the <i>trans</i> configuration and the <i>cis</i> configuration. The rotational behavior of phthalocyanine rotator in two configurations were investigated by VT-<sup>1</sup>H NMR experiments, and the results indicated that the phthalocyanine rotator possessed a smaller rotational energy barrier in the <i>cis</i> isomer than in the <i>trans</i> 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. |
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| ISSN: | 1420-3049 |